Merge turtle2d in it's subdifrectory for later relocation

12 files changed, 2104 insertions, 0 deletions

diff --git a/turtle2d/src/jogamp/graph/curve/opengl/RegionRendererImpl01.java b/turtle2d/src/jogamp/graph/curve/opengl/RegionRendererImpl01.java
new file mode 100755
index 000000000..c1f293fff
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/opengl/RegionRendererImpl01.java
@@ -0,0 +1,206 @@
+/**

+ * Copyright 2010 JogAmp Community. All rights reserved.

+ *

+ * Redistribution and use in source and binary forms, with or without modification, are

+ * permitted provided that the following conditions are met:

+ *

+ *    1. Redistributions of source code must retain the above copyright notice, this list of

+ *       conditions and the following disclaimer.

+ *

+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list

+ *       of conditions and the following disclaimer in the documentation and/or other materials

+ *       provided with the distribution.

+ *

+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED

+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR

+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON

+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ *

+ * The views and conclusions contained in the software and documentation are those of the

+ * authors and should not be interpreted as representing official policies, either expressed

+ * or implied, of JogAmp Community.

+ */

+package jogamp.graph.curve.opengl;

+

+import java.nio.FloatBuffer;

+import javax.media.opengl.GL2ES2;

+import javax.media.opengl.GLException;

+import javax.media.opengl.GLUniformData;

+import javax.media.opengl.fixedfunc.GLMatrixFunc;

+

+import com.jogamp.graph.curve.OutlineShape;

+import com.jogamp.graph.curve.Region;

+import com.jogamp.graph.curve.opengl.RegionRenderer;

+import com.jogamp.graph.geom.Vertex;

+import com.jogamp.opengl.util.glsl.ShaderCode;

+import com.jogamp.opengl.util.glsl.ShaderProgram;

+import com.jogamp.opengl.util.glsl.ShaderState;

+

+

+public class RegionRendererImpl01 extends RegionRenderer {

+	/**Sharpness is equivalent to the value of t value of texture coord

+	 * on the off-curve vertex. The high value of sharpness will 

+	 * result in high curvature.

+	 */

+    private GLUniformData mgl_sharpness = new GLUniformData("p1y", 0.5f);

+    GLUniformData mgl_alpha = new GLUniformData("g_alpha", 1.0f);

+    private GLUniformData mgl_color = new GLUniformData("g_color", 3, FloatBuffer.allocate(3));

+    private GLUniformData mgl_strength = new GLUniformData("a_strength", 3.0f);

+    

+    public RegionRendererImpl01(Vertex.Factory<? extends Vertex> factory, int type) {

+        super(factory, type);

+    }

+    

+    protected boolean initImpl(GL2ES2 gl) {

+        boolean VBOsupported = gl.isFunctionAvailable("glGenBuffers") &&

+            gl.isFunctionAvailable("glBindBuffer") &&

+            gl.isFunctionAvailable("glBufferData") &&

+            gl.isFunctionAvailable("glDrawElements") &&

+            gl.isFunctionAvailable("glVertexAttribPointer") &&

+            gl.isFunctionAvailable("glDeleteBuffers");

+        

+        if(DEBUG) {

+            System.err.println("RegionRenderer: VBO Supported = " + VBOsupported);

+        }

+        

+        if(!VBOsupported){

+            return false;

+        }

+        

+        gl.glEnable(GL2ES2.GL_BLEND);

+        gl.glBlendFunc(GL2ES2.GL_SRC_ALPHA, GL2ES2.GL_ONE_MINUS_SRC_ALPHA);

+        

+        ShaderCode rsVp = ShaderCode.create(gl, GL2ES2.GL_VERTEX_SHADER, 1, RegionRendererImpl01.class,

+                "shader", "shader/bin", "curverenderer01");

+        ShaderCode rsFp = ShaderCode.create(gl, GL2ES2.GL_FRAGMENT_SHADER, 1, RegionRendererImpl01.class,

+                "shader", "shader/bin", "curverenderer01");

+    

+        ShaderProgram sp = new ShaderProgram();

+        sp.add(rsVp);

+        sp.add(rsFp);

+    

+        if(!sp.link(gl, System.err)) {

+            throw new GLException("RegionRenderer: Couldn't link program: "+sp);

+        }

+    

+        st = new ShaderState();

+        st.attachShaderProgram(gl, sp);

+        gl.glBindAttribLocation(sp.id(), 0, "v_position");

+        gl.glBindAttribLocation(sp.id(), 1, "texCoord");

+        

+        st.glUseProgram(gl, true);

+    

+        pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);

+        pmvMatrix.glLoadIdentity();

+        pmvMatrix.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);

+        pmvMatrix.glLoadIdentity();

+        

+        pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);

+        pmvMatrix.glLoadIdentity();

+        resetModelview(null);

+    

+        mgl_PMVMatrix = new GLUniformData("mgl_PMVMatrix", 4, 4, pmvMatrix.glGetPMvMatrixf());                  

+        if(!st.glUniform(gl, mgl_PMVMatrix)) {

+            if(DEBUG){

+                System.err.println("Error setting PMVMatrix in shader: "+st);

+            }

+            return false;

+        }

+        

+        if(!st.glUniform(gl, mgl_sharpness)) {

+            if(DEBUG){

+                System.err.println("Error setting sharpness in shader: "+st);

+            }

+            return false;

+        }

+                

+        if(!st.glUniform(gl, mgl_alpha)) {

+            if(DEBUG){

+                System.err.println("Error setting global alpha in shader: "+st);

+            }

+            return false;

+        }       

+        

+        if(!st.glUniform(gl, mgl_color)) {

+            if(DEBUG){

+                System.err.println("Error setting global color in shader: "+st);

+            }

+            return false;

+        }       

+        

+        if(!st.glUniform(gl, mgl_strength)) {

+            System.err.println("Error setting antialias strength in shader: "+st);

+        }

+        

+        if(DEBUG) {

+            System.err.println("RegionRendererImpl01 initialized: " + Thread.currentThread()+" "+st);

+        }

+        return true;

+    }

+

+    @Override

+    protected void disposeImpl(GL2ES2 gl) {

+    }

+    

+    

+    @Override

+    public float getAlpha() {

+        return mgl_alpha.floatValue();

+    }

+

+    @Override

+    public void setAlpha(GL2ES2 gl, float alpha_t) {

+        mgl_alpha.setData(alpha_t);

+        if(null != gl && st.inUse()) {

+            st.glUniform(gl, mgl_alpha);

+        }

+    }

+    

+    @Override

+    public void setColor(GL2ES2 gl, float r, float g, float b){

+        FloatBuffer fb = (FloatBuffer) mgl_color.getBuffer();

+        fb.put(0, r);

+        fb.put(1, r);

+        fb.put(2, r);

+        if(null != gl && st.inUse()) {

+            st.glUniform(gl, mgl_color);

+        }

+    }

+    

+	

+	@Override

+    public void renderOutlineShape(GL2ES2 gl, OutlineShape outlineShape, float[] position, int texSize) {

+		if(!isInitialized()){

+			throw new GLException("RegionRendererImpl01: not initialized!");

+		}

+		int hashCode = getHashCode(outlineShape);

+		Region region = regions.get(hashCode);

+		

+		if(null == region) {

+			region = createRegion(gl, outlineShape, mgl_sharpness.floatValue());

+			regions.put(hashCode, region);

+		}		

+		region.render(pmvMatrix, vp_width, vp_height, texSize);

+	}

+	

+	@Override

+    public void renderOutlineShapes(GL2ES2 gl, OutlineShape[] outlineShapes, float[] position, int texSize) {

+        if(!isInitialized()){

+            throw new GLException("RegionRendererImpl01: not initialized!");

+        }

+		

+		int hashCode = getHashCode(outlineShapes);

+		Region region = regions.get(hashCode);

+		

+		if(null == region) {

+            region = createRegion(gl, outlineShapes, mgl_sharpness.floatValue());

+			regions.put(hashCode, region);

+		}		

+        region.render(pmvMatrix, vp_width, vp_height, texSize);

+	}	

+}

diff --git a/turtle2d/src/jogamp/graph/curve/opengl/TextRendererImpl01.java b/turtle2d/src/jogamp/graph/curve/opengl/TextRendererImpl01.java
new file mode 100644
index 000000000..cebe7a19e
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/opengl/TextRendererImpl01.java
@@ -0,0 +1,188 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.graph.curve.opengl;
+
+import java.nio.FloatBuffer;
+
+import javax.media.opengl.GL2ES2;
+import javax.media.opengl.GLException;
+import javax.media.opengl.GLUniformData;
+import javax.media.opengl.fixedfunc.GLMatrixFunc;
+
+import jogamp.graph.curve.text.GlyphString;
+
+import com.jogamp.graph.curve.opengl.TextRenderer;
+import com.jogamp.graph.font.Font;
+import com.jogamp.graph.geom.Vertex;
+import com.jogamp.opengl.util.glsl.ShaderCode;
+import com.jogamp.opengl.util.glsl.ShaderProgram;
+
+public class TextRendererImpl01 extends TextRenderer {    
+	/**Sharpness is equivalent to the value of t value of texture coord
+	 * on the off-curve vertex. The high value of sharpness will 
+	 * result in high curvature.
+	 */
+    private GLUniformData mgl_sharpness = new GLUniformData("p1y", 0.5f);
+    GLUniformData mgl_alpha = new GLUniformData("g_alpha", 1.0f);
+    private GLUniformData mgl_color = new GLUniformData("g_color", 3, FloatBuffer.allocate(3));
+    private GLUniformData mgl_strength = new GLUniformData("a_strength", 1.8f);
+    	
+	public TextRendererImpl01(Vertex.Factory<? extends Vertex> factory, int type) {
+	    super(factory, type);
+	}
+
+	@Override
+    protected boolean initImpl(GL2ES2 gl){
+		boolean VBOsupported = gl.isFunctionAvailable("glGenBuffers") &&
+			gl.isFunctionAvailable("glBindBuffer") &&
+			gl.isFunctionAvailable("glBufferData") &&
+			gl.isFunctionAvailable("glDrawElements") &&
+			gl.isFunctionAvailable("glVertexAttribPointer") &&
+			gl.isFunctionAvailable("glDeleteBuffers");
+		
+		if(DEBUG) {
+			System.err.println("TextRendererImpl01: VBO Supported = " + VBOsupported);
+		}
+		
+		if(!VBOsupported){
+			return false;
+		}
+		
+		gl.glEnable(GL2ES2.GL_BLEND);
+		gl.glBlendFunc(GL2ES2.GL_SRC_ALPHA, GL2ES2.GL_ONE_MINUS_SRC_ALPHA);
+		
+        ShaderCode rsVp = ShaderCode.create(gl, GL2ES2.GL_VERTEX_SHADER, 1, TextRendererImpl01.class,
+                "shader", "shader/bin", "curverenderer01");
+        ShaderCode rsFp = ShaderCode.create(gl, GL2ES2.GL_FRAGMENT_SHADER, 1, TextRendererImpl01.class,
+                "shader", "shader/bin", "curverenderer01");
+
+        ShaderProgram sp = new ShaderProgram();
+        sp.add(rsVp);
+        sp.add(rsFp);
+
+        if(!sp.link(gl, System.err)) {
+            throw new GLException("TextRendererImpl01: Couldn't link program: "+sp);
+        }
+
+        st.attachShaderProgram(gl, sp);
+        gl.glBindAttribLocation(sp.id(), 0, "v_position");
+        gl.glBindAttribLocation(sp.id(), 1, "texCoord");
+		
+		st.glUseProgram(gl, true);
+
+		pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
+		pmvMatrix.glLoadIdentity();
+		pmvMatrix.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
+		pmvMatrix.glLoadIdentity();
+		
+		pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
+		pmvMatrix.glLoadIdentity();
+		resetModelview(null);
+		
+		mgl_PMVMatrix = new GLUniformData("mgl_PMVMatrix", 4, 4, pmvMatrix.glGetPMvMatrixf());		    		
+		if(!st.glUniform(gl, mgl_PMVMatrix)) {
+			if(DEBUG){
+				System.err.println("Error setting PMVMatrix in shader: "+st);
+			}
+			return false;
+		}
+		
+		if(!st.glUniform(gl, mgl_sharpness)) {
+			if(DEBUG){
+				System.err.println("Error setting sharpness in shader: "+st);
+			}
+			return false;
+		}
+				
+		if(!st.glUniform(gl, mgl_alpha)) {
+			if(DEBUG){
+				System.err.println("Error setting global alpha in shader: "+st);
+			}
+			return false;
+		}		
+		
+		if(!st.glUniform(gl, mgl_color)) {
+			if(DEBUG){
+				System.err.println("Error setting global color in shader: "+st);
+			}
+			return false;
+		}		
+		
+		if(!st.glUniform(gl, mgl_strength)) {
+			System.err.println("Error setting antialias strength in shader: "+st);
+		}
+		
+		if(DEBUG) {
+			System.err.println("TextRendererImpl01 initialized: " + Thread.currentThread()+" "+st);
+		}
+		return true;
+	}
+	
+	@Override
+    protected void disposeImpl(GL2ES2 gl) {
+	}
+	
+    @Override
+    public float getAlpha() {
+        return mgl_alpha.floatValue();
+    }
+
+    @Override
+    public void setAlpha(GL2ES2 gl, float alpha_t) {
+        mgl_alpha.setData(alpha_t);
+        if(null != gl && st.inUse()) {
+            st.glUniform(gl, mgl_alpha);
+        }
+    }
+	
+	@Override
+    public void setColor(GL2ES2 gl, float r, float g, float b){
+	    FloatBuffer fb = (FloatBuffer) mgl_color.getBuffer();
+	    fb.put(0, r);
+	    fb.put(1, r);
+	    fb.put(2, r);
+	    if(null != gl && st.inUse()) {
+	        st.glUniform(gl, mgl_color);
+	    }
+	}
+	
+	@Override
+    public void renderString3D(GL2ES2 gl, Font font, String str, float[] position, int fontSize, int texSize) {
+		if(!isInitialized()){
+			throw new GLException("TextRendererImpl01: not initialized!");
+		}
+		GlyphString glyphString = getCachedGlyphString(font, str, fontSize);
+		if(null == glyphString) {
+			glyphString = createString(gl, font, fontSize, str, mgl_sharpness.floatValue());
+			addCachedGlyphString(font, str, fontSize, glyphString);
+		}
+		
+		glyphString.renderString3D(pmvMatrix, vp_width, vp_height, texSize);
+	}
+	
+}
diff --git a/turtle2d/src/jogamp/graph/curve/opengl/VBORegion2PES2.java b/turtle2d/src/jogamp/graph/curve/opengl/VBORegion2PES2.java
new file mode 100644
index 000000000..c7c370f6d
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/opengl/VBORegion2PES2.java
@@ -0,0 +1,385 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.graph.curve.opengl;
+
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+import java.nio.ShortBuffer;
+import java.util.ArrayList;
+
+import javax.media.opengl.GL2ES2;
+// FIXME: Subsume GL2GL3.GL_DRAW_FRAMEBUFFER -> GL2ES2.GL_DRAW_FRAMEBUFFER ! 
+import javax.media.opengl.GL2GL3;
+import javax.media.opengl.GLContext;
+import javax.media.opengl.GLUniformData;
+import javax.media.opengl.fixedfunc.GLMatrixFunc;
+
+import com.jogamp.common.nio.Buffers;
+
+import com.jogamp.graph.geom.AABBox;
+import com.jogamp.graph.geom.Triangle;
+import com.jogamp.graph.geom.Vertex;
+
+import com.jogamp.graph.curve.Region;
+import com.jogamp.opengl.util.PMVMatrix;
+import com.jogamp.opengl.util.glsl.ShaderState;
+
+public class VBORegion2PES2  implements Region{
+	private int numVertices = 0;
+	private IntBuffer vboIds;
+	
+	private IntBuffer t_vboIds;
+	
+	private ArrayList<Triangle> triangles = new ArrayList<Triangle>();
+	private ArrayList<Vertex> vertices = new ArrayList<Vertex>();
+	private GLContext context;
+	
+	private int numBuffers = 3;
+	
+	private boolean flipped = false;
+	
+	private boolean dirty = false;
+	
+	private AABBox box = null;
+	private int[] texture = { 0 } ;
+	private int[] fbo = { 0 } ;
+	private int[] rbo_depth = { 0 } ;
+	private boolean texInitialized = false;
+
+	private int tex_width_c = 0;
+	private int tex_height_c = 0;
+	
+	private ShaderState st;
+	
+	public VBORegion2PES2(GLContext context, ShaderState st){
+		this.context =context;
+		this.st = st;
+	}
+	
+	public void update(){
+		box = new AABBox();
+		
+		GL2ES2 gl = context.getGL().getGL2ES2();
+		ShortBuffer indicies = Buffers.newDirectShortBuffer(triangles.size() * 3);
+		
+		for(Triangle t:triangles){
+			if(t.getVertices()[0].getId() == Integer.MAX_VALUE){
+				t.getVertices()[0].setId(numVertices++);
+				t.getVertices()[1].setId(numVertices++);
+				t.getVertices()[2].setId(numVertices++);
+				
+				vertices.add(t.getVertices()[0]);
+				vertices.add(t.getVertices()[1]);
+				vertices.add(t.getVertices()[2]);
+				
+				indicies.put((short) t.getVertices()[0].getId());
+				indicies.put((short) t.getVertices()[1].getId());
+				indicies.put((short) t.getVertices()[2].getId());
+			}
+			else{
+				Vertex v1 = t.getVertices()[0];
+				Vertex v2 = t.getVertices()[1];
+				Vertex v3 = t.getVertices()[2];
+				
+				indicies.put((short) v1.getId());
+				indicies.put((short) v2.getId());
+				indicies.put((short) v3.getId());
+			}
+		}
+		indicies.rewind();
+		
+		FloatBuffer verticesBuffer = Buffers.newDirectFloatBuffer(vertices.size() * 3);
+		for(Vertex v:vertices){
+			verticesBuffer.put(v.getX());
+			if(flipped){
+				verticesBuffer.put(-1*v.getY());
+			}
+			else{
+				verticesBuffer.put(v.getY());
+			}
+			verticesBuffer.put(v.getZ());
+			if(flipped){
+				box.resize(v.getX(), -1*v.getY(), v.getZ());
+			}
+			else{
+				box.resize(v.getX(), v.getY(), v.getZ());
+			}
+		}
+		verticesBuffer.rewind();
+		
+		FloatBuffer texCoordBuffer = Buffers.newDirectFloatBuffer(vertices.size() * 2);
+		for(Vertex v:vertices){
+			float[] tex = v.getTexCoord();
+			texCoordBuffer.put(tex[0]);
+			texCoordBuffer.put(tex[1]);
+		}
+		texCoordBuffer.rewind();
+
+		vboIds = IntBuffer.allocate(numBuffers);
+		gl.glGenBuffers(numBuffers, vboIds);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(0)); // vertices
+		gl.glBufferData(GL2ES2.GL_ARRAY_BUFFER, numVertices * 3 * Buffers.SIZEOF_FLOAT, verticesBuffer, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(1)); //texture
+		gl.glBufferData(GL2ES2.GL_ARRAY_BUFFER, numVertices * 2 * Buffers.SIZEOF_FLOAT, texCoordBuffer, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, vboIds.get(2)); //triangles
+		gl.glBufferData(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, triangles.size()* 3 * Buffers.SIZEOF_SHORT, indicies, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, 0);
+		
+		dirty = false;
+	}
+	
+	public void render(PMVMatrix matrix, int vp_width, int vp_height, int width){
+		if(null == matrix || vp_width <=0 || vp_height <= 0 || width <= 0){
+			renderRegion();
+		}
+		else {
+			if(width != tex_width_c){
+				texInitialized = false;
+				tex_width_c = width;
+			}
+			if(!texInitialized){
+				initFBOTexture(matrix,vp_width, vp_height);
+				texInitialized = true;
+			}
+//			System.out.println("Scale: " + matrix.glGetMatrixf().get(1+4*3) +" " + matrix.glGetMatrixf().get(2+4*3));
+			renderTexture(matrix, vp_width, vp_height);
+		}
+	}
+	
+	private void renderTexture(PMVMatrix matrix, int width, int hight){
+		GL2ES2 gl = context.getGL().getGL2ES2();
+	    gl.glViewport(0, 0, width, hight);
+	    if(!st.glUniform(gl, new GLUniformData("mgl_PMVMatrix", 4, 4, matrix.glGetPMvMatrixf()))){
+	    	System.out.println("Cnt set tex based mat");
+	    }
+	    gl.glEnable(GL2ES2.GL_TEXTURE_2D);
+	    gl.glActiveTexture(GL2ES2.GL_TEXTURE0);
+	    gl.glBindTexture(GL2ES2.GL_TEXTURE_2D, texture[0]);
+	    
+	    st.glUniform(gl, new GLUniformData("texture", texture[0]));
+	    int loc = gl.glGetUniformLocation(st.shaderProgram().id(), "texture");
+	    gl.glUniform1i(loc, 0);
+	    
+	    
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, t_vboIds.get(0));
+		gl.glEnableVertexAttribArray(VERTEX_ATTR_IDX);
+		gl.glVertexAttribPointer(VERTEX_ATTR_IDX, 3, GL2ES2.GL_FLOAT, false, 3 * Buffers.SIZEOF_FLOAT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, t_vboIds.get(1));
+		gl.glEnableVertexAttribArray(TEXCOORD_ATTR_IDX);
+		gl.glVertexAttribPointer(TEXCOORD_ATTR_IDX, 2, GL2ES2.GL_FLOAT, false, 2 * Buffers.SIZEOF_FLOAT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, t_vboIds.get(2));
+		gl.glDrawElements(GL2ES2.GL_TRIANGLES, 2 * 3, GL2ES2.GL_UNSIGNED_SHORT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+	}
+	
+	private void setupBoundingBuffers(){
+	    GL2ES2 gl = context.getGL().getGL2ES2();
+		
+		ShortBuffer indicies = Buffers.newDirectShortBuffer(6);
+		indicies.put((short) 0); indicies.put((short) 1); indicies.put((short) 3);
+		indicies.put((short) 1); indicies.put((short) 2); indicies.put((short) 3);
+		indicies.rewind();
+		
+		FloatBuffer verticesBuffer = Buffers.newDirectFloatBuffer(4 * 3);
+		FloatBuffer texCoordBuffer = Buffers.newDirectFloatBuffer(4 * 2);
+		
+		verticesBuffer.put(box.getLow()[0]);
+		verticesBuffer.put(box.getLow()[1]);
+		verticesBuffer.put(box.getLow()[2]);
+		texCoordBuffer.put(5);
+		texCoordBuffer.put(5);
+		
+		verticesBuffer.put(box.getLow()[0]);
+		verticesBuffer.put(box.getHigh()[1]);
+		verticesBuffer.put(box.getLow()[2]);
+		
+		texCoordBuffer.put(5);
+		texCoordBuffer.put(6);
+		
+		verticesBuffer.put(box.getHigh()[0]);
+		verticesBuffer.put(box.getHigh()[1]);
+		verticesBuffer.put(box.getLow()[2]);
+		
+		texCoordBuffer.put(6);
+		texCoordBuffer.put(6);
+		
+		verticesBuffer.put(box.getHigh()[0]);
+		verticesBuffer.put(box.getLow()[1]);
+		verticesBuffer.put(box.getLow()[2]);
+		
+		texCoordBuffer.put(6);
+		texCoordBuffer.put(5);
+			
+		verticesBuffer.rewind();
+		texCoordBuffer.rewind();
+
+		t_vboIds = IntBuffer.allocate(3);
+		gl.glGenBuffers(numBuffers, t_vboIds);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, t_vboIds.get(0)); // vertices
+		gl.glBufferData(GL2ES2.GL_ARRAY_BUFFER, 4 * 3 * Buffers.SIZEOF_FLOAT, verticesBuffer, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, t_vboIds.get(1)); //texture
+		gl.glBufferData(GL2ES2.GL_ARRAY_BUFFER, 4 * 2 * Buffers.SIZEOF_FLOAT, texCoordBuffer, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, t_vboIds.get(2)); //triangles
+		gl.glBufferData(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, 4 * 3 * Buffers.SIZEOF_SHORT, indicies, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, 0);
+	}
+	
+	private void initFBOTexture(PMVMatrix m, int width, int hight){
+		tex_height_c = (int)(tex_width_c*box.getHeight()/box.getWidth());
+	    // tex_height_c = tex_width_c;
+	    System.out.println("FBO Size: "+tex_height_c+"x"+tex_width_c);
+		System.out.println("FBO Scale: " + m.glGetMatrixf().get(0) +" " + m.glGetMatrixf().get(5));
+		GL2ES2 gl = context.getGL().getGL2ES2();
+		
+		if(fbo[0] > 0) {
+		    gl.glDeleteFramebuffers(1, fbo, 0);
+		    fbo[0] = 0;
+		}
+		if(texture[0]>0) {
+		    gl.glDeleteTextures(1, texture, 0);
+		    texture[0] = 0;
+		}
+		
+        gl.glGenFramebuffers(1, fbo, 0);
+		gl.glGenTextures(1, texture, 0);
+        gl.glGenRenderbuffers(1,rbo_depth, 0);
+        System.out.println("FBO: fbo " + fbo[0] + ", tex " + texture[0] + ", depth " + rbo_depth[0]);
+		
+        gl.glBindFramebuffer(GL2GL3.GL_DRAW_FRAMEBUFFER, fbo[0]);
+		gl.glBindTexture(GL2ES2.GL_TEXTURE_2D, texture[0]);
+		gl.glTexImage2D(GL2ES2.GL_TEXTURE_2D, 0, GL2ES2.GL_RGBA, tex_width_c, 
+				tex_height_c, 0, GL2ES2.GL_RGBA, GL2ES2.GL_UNSIGNED_BYTE, null);
+		
+		gl.glTexParameterf(GL2ES2.GL_TEXTURE_2D, GL2ES2.GL_TEXTURE_MIN_FILTER, GL2ES2.GL_LINEAR);
+		gl.glTexParameterf(GL2ES2.GL_TEXTURE_2D, GL2ES2.GL_TEXTURE_MAG_FILTER, GL2ES2.GL_LINEAR);
+		gl.glTexParameterf(GL2ES2.GL_TEXTURE_2D, GL2ES2.GL_TEXTURE_WRAP_S, GL2ES2.GL_CLAMP_TO_EDGE);
+		gl.glTexParameterf(GL2ES2.GL_TEXTURE_2D, GL2ES2.GL_TEXTURE_WRAP_T, GL2ES2.GL_CLAMP_TO_EDGE);
+
+	    gl.glFramebufferTexture2D(GL2GL3.GL_DRAW_FRAMEBUFFER, GL2ES2.GL_COLOR_ATTACHMENT0, 
+	                              GL2ES2.GL_TEXTURE_2D, texture[0], 0);
+
+        // Set up the depth buffer
+	    gl.glBindRenderbuffer(GL2ES2.GL_RENDERBUFFER, rbo_depth[0]);
+	    gl.glRenderbufferStorage(GL2ES2.GL_RENDERBUFFER, GL2ES2.GL_DEPTH_COMPONENT, tex_width_c, tex_height_c);
+	    gl.glFramebufferRenderbuffer(GL2ES2.GL_FRAMEBUFFER, GL2ES2.GL_DEPTH_COMPONENT, GL2ES2.GL_RENDERBUFFER, rbo_depth[0]);
+
+	    int status = gl.glCheckFramebufferStatus(GL2ES2.GL_FRAMEBUFFER);
+	    if(status != GL2ES2.GL_FRAMEBUFFER_COMPLETE){
+	    	System.err.println("Cant Create R2T pass!");
+	    }
+	    
+	    //render texture
+		PMVMatrix tex_matrix = new PMVMatrix();
+	    gl.glBindFramebuffer(GL2GL3.GL_DRAW_FRAMEBUFFER, fbo[0]);
+	    gl.glViewport(0, 0, tex_width_c, tex_height_c);
+	    tex_matrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
+	    tex_matrix.glLoadIdentity();
+	    tex_matrix.glOrthof(box.getLow()[0], box.getHigh()[0], box.getLow()[1], box.getHigh()[1], -1, 1);
+	    
+	    if(!st.glUniform(gl, new GLUniformData("mgl_PMVMatrix", 4, 4, tex_matrix.glGetPMvMatrixf()))){
+	    	System.out.println("Cnt set tex based mat");
+	    }
+	    
+	    gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+	    gl.glClear(GL2ES2.GL_COLOR_BUFFER_BIT | GL2ES2.GL_DEPTH_BUFFER_BIT);
+	    renderRegion();
+
+	    gl.glBindFramebuffer(GL2ES2.GL_FRAMEBUFFER, 0);
+	    gl.glBindTexture(GL2ES2.GL_TEXTURE_2D, 0);
+	    
+	    setupBoundingBuffers();
+	}
+	
+	private void renderRegion(){
+		GL2ES2 gl = context.getGL().getGL2ES2();
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(0));
+		gl.glEnableVertexAttribArray(VERTEX_ATTR_IDX);
+		gl.glVertexAttribPointer(VERTEX_ATTR_IDX, 3, GL2ES2.GL_FLOAT, false, 3 * Buffers.SIZEOF_FLOAT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(1));
+		gl.glEnableVertexAttribArray(TEXCOORD_ATTR_IDX);
+		gl.glVertexAttribPointer(TEXCOORD_ATTR_IDX, 2, GL2ES2.GL_FLOAT, false, 2 * Buffers.SIZEOF_FLOAT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, vboIds.get(2));
+		gl.glDrawElements(GL2ES2.GL_TRIANGLES, triangles.size() * 3, GL2ES2.GL_UNSIGNED_SHORT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+	}
+	
+	public void addTriangles(ArrayList<Triangle> tris) {
+		triangles.addAll(tris);
+		dirty = true;
+	}
+	
+	public int getNumVertices(){
+		return numVertices;
+	}
+	
+	public void addVertices(ArrayList<Vertex> verts){
+		vertices.addAll(verts);
+		numVertices = vertices.size();
+		dirty = true;
+	}
+	
+	public boolean isDirty(){
+		return dirty;
+	}
+	
+	public void destroy() {
+		GL2ES2 gl = context.getGL().getGL2ES2();
+		gl.glDeleteBuffers(numBuffers, vboIds);
+		gl.glDeleteFramebuffers(1, fbo, 0);
+		fbo[0] = 0;
+		gl.glDeleteTextures(1, texture, 0);
+		texture[0] = 0;
+		gl.glDeleteRenderbuffers(1, rbo_depth, 0);
+		rbo_depth[0] = 0;
+	}
+	
+	public boolean isFlipped() {
+		return flipped;
+	}
+
+	public void setFlipped(boolean flipped) {
+		this.flipped = flipped;
+	}
+}
diff --git a/turtle2d/src/jogamp/graph/curve/opengl/VBORegionSPES2.java b/turtle2d/src/jogamp/graph/curve/opengl/VBORegionSPES2.java
new file mode 100644
index 000000000..701549d46
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/opengl/VBORegionSPES2.java
@@ -0,0 +1,185 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.graph.curve.opengl;
+
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+import java.nio.ShortBuffer;
+import java.util.ArrayList;
+
+import javax.media.opengl.GL2ES2;
+import javax.media.opengl.GLContext;
+
+import com.jogamp.common.nio.Buffers;
+import com.jogamp.graph.curve.Region;
+import com.jogamp.graph.geom.Vertex;
+import com.jogamp.graph.geom.Triangle;
+import com.jogamp.opengl.util.PMVMatrix;
+
+public class VBORegionSPES2  implements Region{
+	private int numVertices = 0;
+	private IntBuffer vboIds;
+	
+	private ArrayList<Triangle> triangles = new ArrayList<Triangle>();
+	private ArrayList<Vertex> vertices = new ArrayList<Vertex>();
+	
+	private GLContext context;
+	
+	private int numBuffers = 3;
+	
+	private boolean flipped = false;
+	private boolean dirty = false;
+	
+	public VBORegionSPES2(GLContext context){
+		this.context =context;
+	}
+	
+	public void update(){
+		GL2ES2 gl = context.getGL().getGL2ES2();
+		ShortBuffer indicies = Buffers.newDirectShortBuffer(triangles.size() * 3);
+		
+		for(Triangle t:triangles){
+			final Vertex[] t_vertices = t.getVertices();
+			
+			if(t_vertices[0].getId() == Integer.MAX_VALUE){
+				t_vertices[0].setId(numVertices++);
+				t_vertices[1].setId(numVertices++);
+				t_vertices[2].setId(numVertices++);
+				
+				vertices.add(t.getVertices()[0]);
+				vertices.add(t.getVertices()[1]);
+				vertices.add(t.getVertices()[2]);
+
+				indicies.put((short) t.getVertices()[0].getId());
+				indicies.put((short) t.getVertices()[1].getId());
+				indicies.put((short) t.getVertices()[2].getId());
+			}
+			else{
+				Vertex v1 = t_vertices[0];
+				Vertex v2 = t_vertices[1];
+				Vertex v3 = t_vertices[2];
+				
+				indicies.put((short) v1.getId());
+				indicies.put((short) v2.getId());
+				indicies.put((short) v3.getId());
+			}
+		}
+		indicies.rewind();
+		
+		FloatBuffer verticesBuffer = Buffers.newDirectFloatBuffer(vertices.size() * 3);
+		for(Vertex v:vertices){
+			verticesBuffer.put(v.getX());
+			if(flipped){
+				verticesBuffer.put(-1*v.getY());
+			}
+			else{
+				verticesBuffer.put(v.getY());
+			}
+			verticesBuffer.put(v.getZ());
+		}
+		verticesBuffer.rewind();
+		
+		FloatBuffer texCoordBuffer = Buffers.newDirectFloatBuffer(vertices.size() * 2);
+		for(Vertex v:vertices){
+			float[] tex = v.getTexCoord();
+			texCoordBuffer.put(tex[0]);
+			texCoordBuffer.put(tex[1]);
+		}
+		texCoordBuffer.rewind();
+
+		vboIds = IntBuffer.allocate(numBuffers);
+		gl.glGenBuffers(numBuffers, vboIds);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(0)); // vertices
+		gl.glBufferData(GL2ES2.GL_ARRAY_BUFFER, numVertices * 3 * Buffers.SIZEOF_FLOAT, verticesBuffer, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(1)); //texture
+		gl.glBufferData(GL2ES2.GL_ARRAY_BUFFER, numVertices * 2 * Buffers.SIZEOF_FLOAT, texCoordBuffer, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, vboIds.get(2)); //triangles
+		gl.glBufferData(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, triangles.size()* 3 * Buffers.SIZEOF_SHORT, indicies, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, 0);
+		
+		dirty = false;
+	}
+	
+	private void render() {
+		GL2ES2 gl = context.getGL().getGL2ES2();
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(0));
+		gl.glEnableVertexAttribArray(VERTEX_ATTR_IDX);
+		gl.glVertexAttribPointer(VERTEX_ATTR_IDX, 3, GL2ES2.GL_FLOAT, false, 3 * Buffers.SIZEOF_FLOAT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(1));
+		gl.glEnableVertexAttribArray(TEXCOORD_ATTR_IDX);
+		gl.glVertexAttribPointer(TEXCOORD_ATTR_IDX, 2, GL2ES2.GL_FLOAT, false, 2 * Buffers.SIZEOF_FLOAT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, vboIds.get(2));
+		gl.glDrawElements(GL2ES2.GL_TRIANGLES, triangles.size() * 3, GL2ES2.GL_UNSIGNED_SHORT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+	}
+	
+	public void render(PMVMatrix matrix, int vp_width, int vp_height, int width){
+		render();
+	}
+	
+	public void addTriangles(ArrayList<Triangle> tris) {
+		triangles.addAll(tris);
+		dirty = true;
+	}
+	
+	public int getNumVertices(){
+		return numVertices;
+	}
+	
+	public void addVertices(ArrayList<Vertex> verts){
+		vertices.addAll(verts);
+		numVertices = vertices.size();
+		dirty = true;
+	}
+	
+	public boolean isDirty(){
+		return dirty;
+	}
+	
+	public void destroy() {
+		GL2ES2 gl = context.getGL().getGL2ES2();
+		gl.glDeleteBuffers(numBuffers, vboIds);
+	}
+	
+	public boolean isFlipped() {
+		return flipped;
+	}
+
+	public void setFlipped(boolean flipped) {
+		this.flipped = flipped;
+	}
+}
diff --git a/turtle2d/src/jogamp/graph/curve/opengl/shader/curverenderer01.fp b/turtle2d/src/jogamp/graph/curve/opengl/shader/curverenderer01.fp
new file mode 100644
index 000000000..2b3a0ce1d
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/opengl/shader/curverenderer01.fp
@@ -0,0 +1,99 @@
+//#version 100
+
+uniform float p1y;
+uniform float g_alpha;
+uniform vec3 g_color;
+uniform float a_strength;
+
+varying vec2 v_texCoord;
+
+vec3 b_color = vec3(0.0, 0.0, 0.0);
+
+uniform sampler2D texture;
+vec4 weights = vec4(0.075, 0.06, 0.045, 0.025);
+
+void main (void)
+{
+	vec2 rtex = vec2(abs(v_texCoord.x),abs(v_texCoord.y));
+	vec3 c = g_color;
+	
+	float alpha = 0.0;
+	
+	if((v_texCoord.x == 0.0) && (v_texCoord.y == 0.0)){
+	 	alpha = g_alpha;
+	}
+	else if((v_texCoord.x >= 5.0)){
+		vec2 dfx = dFdx(v_texCoord);
+		vec2 dfy = dFdy(v_texCoord);
+		
+		vec2 size = 1.0/textureSize(texture,0); //version 130
+		rtex -= 5.0;
+		vec4 t = texture2D(texture, rtex)* 0.18;
+
+		t += texture2D(texture, rtex + size*(vec2(1, 0)))*weights.x;
+		t +=  texture2D(texture, rtex - size*(vec2(1, 0)))*weights.x;
+		t +=  texture2D(texture, rtex + size*(vec2(0, 1)))*weights.x;
+		t +=  texture2D(texture, rtex - size*(vec2(0, 1)))*weights.x;
+		
+		t += texture2D(texture, rtex + 2.0*size*(vec2(1, 0))) *weights.y;
+		t +=  texture2D(texture, rtex - 2.0*size*(vec2(1, 0)))*weights.y;
+		t +=  texture2D(texture, rtex + 2.0*size*(vec2(0, 1)))*weights.y; 
+		t +=  texture2D(texture, rtex - 2.0*size*(vec2(0, 1)))*weights.y;
+		
+		t += texture2D(texture, rtex + 3.0*size*(vec2(1, 0))) *weights.z;
+		t +=  texture2D(texture, rtex - 3.0*size*(vec2(1, 0)))*weights.z;
+		t +=  texture2D(texture, rtex + 3.0*size*(vec2(0, 1)))*weights.z;
+		t +=  texture2D(texture, rtex - 3.0*size*(vec2(0, 1)))*weights.z;
+		
+		t += texture2D(texture, rtex + 4.0*size*(vec2(1, 0))) *weights.w;
+		t +=  texture2D(texture, rtex - 4.0*size*(vec2(1, 0)))*weights.w;
+		t +=  texture2D(texture, rtex + 4.0*size*(vec2(0, 1)))*weights.w;
+		t +=  texture2D(texture, rtex - 4.0*size*(vec2(0, 1)))*weights.w;
+		
+		if(t.w == 0.0){
+			discard;
+		}
+		
+		c = t.xyz;
+		alpha = g_alpha* t.w;
+	}
+	///////////////////////////////////////////////////////////
+	else if ((v_texCoord.x > 0.0) && (rtex.y > 0.0 || rtex.x == 1.0)){
+  		vec2 dtx = dFdx(rtex);
+  		vec2 dty = dFdy(rtex);
+  		
+  		rtex.y -= 0.1;
+  		if(rtex.y < 0.0) {
+  			if(v_texCoord.y < 0.0)
+  				discard;
+  			else{
+  				rtex.y = 0.0;
+  			}
+  		}
+  		
+  		vec2 f = vec2((dtx.y - 2.0*p1y*dtx.x + 4.0*p1y*rtex.x*dtx.x), (dty.y - 2.0*p1y*dty.x + 4.0*p1y*rtex.x*dty.x));
+  		
+  		float position = rtex.y - ((2.0 * rtex.x * p1y) * (1.0 - rtex.x));
+  		float d = position/(length(f));
+
+		float a = (0.5 - d * sign(v_texCoord.y));  
+		
+		
+		if (a >= 1.0)  { 
+	    	alpha = g_alpha;
+	    //	c = vec3(1.0,1.0,1.0);
+    	} 
+  		else if (a <= 0.0) {
+   			alpha = 0.0;//discard;
+   		//	c = vec3(0.0,0.0,0.0);
+   			
+   		}
+  		else {           
+    		alpha = g_alpha*a;
+    	//	c = vec3(a,a,a);
+    		mix(b_color,g_color, a);
+    	}  
+	}
+	
+    gl_FragColor = vec4(c, alpha);
+}
diff --git a/turtle2d/src/jogamp/graph/curve/opengl/shader/curverenderer01.vp b/turtle2d/src/jogamp/graph/curve/opengl/shader/curverenderer01.vp
new file mode 100644
index 000000000..bc9ecb41e
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/opengl/shader/curverenderer01.vp
@@ -0,0 +1,13 @@
+//#version 100
+
+uniform mat4 mgl_PMVMatrix[2];
+attribute vec4 v_position;
+attribute vec2 texCoord; 
+
+varying vec2 v_texCoord;
+
+void main(void)
+{
+  gl_Position = mgl_PMVMatrix[0] * mgl_PMVMatrix[1] * v_position;
+  v_texCoord = texCoord.st;
+}
\ No newline at end of file
diff --git a/turtle2d/src/jogamp/graph/curve/tess/GraphOutline.java b/turtle2d/src/jogamp/graph/curve/tess/GraphOutline.java
new file mode 100644
index 000000000..5dae296e5
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/tess/GraphOutline.java
@@ -0,0 +1,81 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.graph.curve.tess;
+
+import java.util.ArrayList;
+
+import com.jogamp.graph.geom.Outline;
+import com.jogamp.graph.geom.Vertex;
+
+public class GraphOutline {
+	final private Outline outline;
+	final private ArrayList<GraphVertex> controlpoints = new ArrayList<GraphVertex>(3);
+	
+	public GraphOutline(){
+		this.outline = new Outline();
+	}
+	
+	/**Create a control polyline of control vertices
+	 * the curve pieces can be identified by onCurve flag 
+	 * of each cp the control polyline is open by default
+	 */
+	public GraphOutline(Outline ol){
+		this.outline = ol;
+		ArrayList<Vertex> vertices = this.outline.getVertices();
+		for(Vertex v:vertices){
+			this.controlpoints.add(new GraphVertex(v));
+		}
+	}
+
+	public Outline getOutline() {
+		return outline;
+	}
+
+	/*public void setOutline(Outline<T> outline) {
+		this.outline = outline;
+	}*/
+	
+
+	public ArrayList<GraphVertex> getGraphPoint() {
+		return controlpoints;
+	}
+	
+	public ArrayList<Vertex> getPoints() {
+		return outline.getVertices();
+	}
+
+	/*public void setControlpoints(ArrayList<GraphPoint<T>> controlpoints) {
+		this.controlpoints = controlpoints;
+	}*/
+
+	public void addVertex(GraphVertex v) {
+		controlpoints.add(v);
+		outline.addVertex(v.getPoint());
+	}
+	
+}
diff --git a/turtle2d/src/jogamp/graph/curve/tess/GraphVertex.java b/turtle2d/src/jogamp/graph/curve/tess/GraphVertex.java
new file mode 100644
index 000000000..b9f95a0e7
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/tess/GraphVertex.java
@@ -0,0 +1,120 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.graph.curve.tess;
+
+import java.util.ArrayList;
+
+import com.jogamp.graph.geom.Vertex;
+
+public class GraphVertex {
+	private Vertex point;
+	private ArrayList<HEdge> edges = null;
+	private boolean boundaryContained = false;
+	
+	public GraphVertex(Vertex point) {
+		this.point = point;
+	}
+
+	public Vertex getPoint() {
+		return point;
+	}
+	
+	public float getX(){
+		return point.getX();
+	}
+	
+	public float getY(){
+		return point.getY();
+	}
+	
+	public float getZ(){
+		return point.getZ();
+	}
+	public float[] getCoord() {
+		return point.getCoord();
+	}
+
+	public void setPoint(Vertex point) {
+		this.point = point;
+	}
+
+	public ArrayList<HEdge> getEdges() {
+		return edges;
+	}
+
+	public void setEdges(ArrayList<HEdge> edges) {
+		this.edges = edges;
+	}
+	
+	public void addEdge(HEdge edge){
+		if(edges == null){
+			edges = new ArrayList<HEdge>();
+		}
+		edges.add(edge);
+	}
+	public void removeEdge(HEdge edge){
+		if(edges == null)
+			return;
+		edges.remove(edge);
+		if(edges.size() == 0){
+			edges = null;
+		}
+	}
+	public HEdge findNextEdge(GraphVertex nextVert){
+		for(HEdge e:edges){
+			if(e.getNext().getGraphPoint() == nextVert){
+				return e;
+			}
+		}
+		return null;
+	}
+	public HEdge findBoundEdge(){
+		for(HEdge e:edges){
+			if((e.getType() == HEdge.BOUNDARY) || (e.getType() == HEdge.HOLE)){
+				return e;
+			}
+		}
+		return null;
+	}
+	public HEdge findPrevEdge(GraphVertex prevVert){
+		for(HEdge e:edges){
+			if(e.getPrev().getGraphPoint() == prevVert){
+				return e;
+			}
+		}
+		return null;
+	}
+	
+	public boolean isBoundaryContained() {
+		return boundaryContained;
+	}
+
+	public void setBoundaryContained(boolean boundaryContained) {
+		this.boundaryContained = boundaryContained;
+	}
+}
diff --git a/turtle2d/src/jogamp/graph/curve/tess/HEdge.java b/turtle2d/src/jogamp/graph/curve/tess/HEdge.java
new file mode 100644
index 000000000..d1bcc6e17
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/tess/HEdge.java
@@ -0,0 +1,130 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.graph.curve.tess;
+
+import com.jogamp.graph.geom.Vertex;
+import com.jogamp.graph.geom.Triangle;
+
+
+public class HEdge {
+	public static int BOUNDARY = 3;
+	public static int INNER = 1;
+	public static int HOLE = 2;
+	
+	private GraphVertex vert;
+	private HEdge prev = null;
+	private HEdge next = null;
+	private HEdge sibling = null;
+	private int type = BOUNDARY;
+	private Triangle triangle = null;
+	
+	public HEdge(GraphVertex vert, int type) {
+		this.vert = vert;
+		this.type = type;
+	}
+
+	public HEdge(GraphVertex vert, HEdge prev, HEdge next, HEdge sibling, int type) {
+		this.vert = vert;
+		this.prev = prev;
+		this.next = next;
+		this.sibling = sibling;
+		this.type = type;
+	}
+
+	public HEdge(GraphVertex vert, HEdge prev, HEdge next, HEdge sibling, int type, Triangle triangle) {
+		this.vert = vert;
+		this.prev = prev;
+		this.next = next;
+		this.sibling = sibling;
+		this.type = type;
+		this.triangle = triangle;
+	}
+
+	public GraphVertex getGraphPoint() {
+		return vert;
+	}
+
+	public void setVert(GraphVertex vert) {
+		this.vert = vert;
+	}
+
+	public HEdge getPrev() {
+		return prev;
+	}
+
+	public void setPrev(HEdge prev) {
+		this.prev = prev;
+	}
+
+	public HEdge getNext() {
+		return next;
+	}
+
+	public void setNext(HEdge next) {
+		this.next = next;
+	}
+
+	public HEdge getSibling() {
+		return sibling;
+	}
+
+	public void setSibling(HEdge sibling) {
+		this.sibling = sibling;
+	}
+
+	public int getType() {
+		return type;
+	}
+
+	public void setType(int type) {
+		this.type = type;
+	}
+
+	public Triangle getTriangle() {
+		return triangle;
+	}
+
+	public void setTriangle(Triangle triangle) {
+		this.triangle = triangle;
+	}
+	
+	public static <T extends Vertex> void connect(HEdge first, HEdge next){
+		first.setNext(next);
+		next.setPrev(first);
+	}
+	
+	public static <T extends Vertex> void makeSiblings(HEdge first, HEdge second){
+		first.setSibling(second);
+		second.setSibling(first);
+	}
+	
+	public boolean vertexOnCurveVertex(){
+		return vert.getPoint().isOnCurve();
+	}
+	
+}
diff --git a/turtle2d/src/jogamp/graph/curve/tess/Loop.java b/turtle2d/src/jogamp/graph/curve/tess/Loop.java
new file mode 100644
index 000000000..fd7736a20
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/tess/Loop.java
@@ -0,0 +1,373 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.graph.curve.tess;
+
+import java.util.ArrayList;
+
+
+import com.jogamp.graph.geom.AABBox;
+import com.jogamp.graph.geom.Vertex;
+import com.jogamp.graph.geom.Triangle;
+import com.jogamp.graph.math.VectorUtil;
+
+public class Loop {
+	private HEdge root = null;
+	private AABBox box = new AABBox();
+	private GraphOutline initialOutline = null;
+
+	public Loop(GraphOutline polyline, int direction){
+		initialOutline = polyline;
+		this.root = initFromPolyline(initialOutline, direction);
+	}
+
+	public HEdge getHEdge(){
+		return root;
+	}
+
+	public Triangle cut(boolean delaunay){
+		if(isSimplex()){
+			Triangle t = new Triangle(root.getGraphPoint().getPoint(), root.getNext().getGraphPoint().getPoint(), 
+					root.getNext().getNext().getGraphPoint().getPoint());
+			t.setVerticesBoundary(checkVerticesBoundary(root));
+			return t;
+		}
+		HEdge prev = root.getPrev();
+		HEdge next1 = root.getNext();
+
+		HEdge next2 = findClosestValidNeighbor(next1.getNext(), delaunay);
+		if(next2 == null){
+			root = root.getNext();
+			return null;
+		}
+
+		GraphVertex v1 = root.getGraphPoint();
+		GraphVertex v2 = next1.getGraphPoint();
+		GraphVertex v3 = next2.getGraphPoint();
+
+		HEdge v3Edge = new HEdge(v3, HEdge.INNER);
+
+		HEdge.connect(v3Edge, root);
+		HEdge.connect(next1, v3Edge);
+
+		HEdge v3EdgeSib = v3Edge.getSibling();
+		if(v3EdgeSib == null){
+			v3EdgeSib = new HEdge(v3Edge.getNext().getGraphPoint(), HEdge.INNER);
+			HEdge.makeSiblings(v3Edge, v3EdgeSib);
+		}
+
+		HEdge.connect(prev, v3EdgeSib);
+		HEdge.connect(v3EdgeSib, next2);
+
+		Triangle t = createTriangle(v1.getPoint(), v2.getPoint(), v3.getPoint(), root);
+		this.root = next2;
+		return t;
+	}
+
+	public boolean isSimplex(){
+		return (root.getNext().getNext().getNext() == root);
+	}
+
+	/**Create a connected list of half edges (loop)
+	 * from the boundary profile
+	 * @param direction requested winding of edges (CCW or CW)
+	 */
+	private HEdge initFromPolyline(GraphOutline outline, int direction){
+		ArrayList<GraphVertex> vertices = outline.getGraphPoint();
+
+		if(vertices.size()<3) {
+			throw new IllegalArgumentException("outline's vertices < 3: " + vertices.size());
+		}
+		boolean isCCW = VectorUtil.ccw(vertices.get(0).getPoint(), vertices.get(1).getPoint(),
+				vertices.get(2).getPoint());
+		boolean invert = isCCW && (direction == VectorUtil.CW);
+
+		HEdge firstEdge = null;
+		HEdge lastEdge = null;
+		int index =0;
+		int max = vertices.size();
+
+		int edgeType =  HEdge.BOUNDARY;
+		if(invert){
+			index = vertices.size() -1;
+			max = -1;
+			edgeType = HEdge.HOLE;
+		}
+
+		while(index != max){
+			GraphVertex v1 = vertices.get(index);
+			box.resize(v1.getX(), v1.getY(), v1.getZ());
+
+			HEdge edge = new HEdge(v1, edgeType);
+
+			v1.addEdge(edge);
+			if(lastEdge != null){
+				lastEdge.setNext(edge);
+				edge.setPrev(lastEdge);
+			}
+			else{
+				firstEdge = edge;
+			}
+
+			if(!invert){
+				if(index == vertices.size()-1){
+					edge.setNext(firstEdge);
+					firstEdge.setPrev(edge);
+				}
+			}
+			else if (index == 0){
+				edge.setNext(firstEdge);
+				firstEdge.setPrev(edge);
+			}
+
+			lastEdge = edge;
+
+			if(!invert){
+				index++;
+			}
+			else{
+				index--;
+			}
+		}
+		return firstEdge;
+	}
+
+	public void addConstraintCurve(GraphOutline polyline) {
+		//		GraphOutline outline = new GraphOutline(polyline);
+		/**needed to generate vertex references.*/
+		initFromPolyline(polyline, VectorUtil.CW); 
+
+		GraphVertex v3 = locateClosestVertex(polyline);
+		HEdge v3Edge = v3.findBoundEdge();
+		HEdge v3EdgeP = v3Edge.getPrev();
+		HEdge crossEdge = new HEdge(root.getGraphPoint(), HEdge.INNER);
+
+		HEdge.connect(root.getPrev(), crossEdge);
+		HEdge.connect(crossEdge, v3Edge);
+
+		HEdge crossEdgeSib = crossEdge.getSibling();
+		if(crossEdgeSib == null) {
+			crossEdgeSib = new HEdge(crossEdge.getNext().getGraphPoint(), HEdge.INNER);
+			HEdge.makeSiblings(crossEdge, crossEdgeSib);
+		}
+
+		HEdge.connect(v3EdgeP, crossEdgeSib);
+		HEdge.connect(crossEdgeSib, root);
+	}
+
+	/** Locates the vertex and update the loops root 
+	 * to have (root + vertex) as closest pair 
+	 * @param polyline the control polyline 
+	 * to search for closestvertices
+	 * @return the vertex that is closest to the newly set root Hedge.
+	 */
+	private GraphVertex locateClosestVertex(GraphOutline polyline) {
+		HEdge closestE = null;
+		GraphVertex closestV = null;
+
+		float minDistance = Float.MAX_VALUE;
+		boolean inValid = false;
+		ArrayList<GraphVertex> initVertices = initialOutline.getGraphPoint();
+		ArrayList<GraphVertex> vertices = polyline.getGraphPoint();
+
+		for(int i=0; i< initVertices.size()-1; i++){
+			GraphVertex v = initVertices.get(i);
+			GraphVertex nextV = initVertices.get(i+1);
+			for(GraphVertex cand:vertices){
+				float distance = VectorUtil.computeLength(v.getCoord(), cand.getCoord());
+				if(distance < minDistance){
+					for (GraphVertex vert:vertices){
+						if(vert == v || vert == nextV || vert == cand)
+							continue;
+						inValid = VectorUtil.inCircle(v.getPoint(), nextV.getPoint(), 
+								cand.getPoint(), vert.getPoint());
+						if(inValid){
+							break;
+						}
+					}
+					if(!inValid){
+						closestV = cand;
+						minDistance = distance;
+						closestE = v.findBoundEdge();
+					}
+				}
+
+			}
+		}
+
+		if(closestE != null){
+			root = closestE;
+		}
+
+		return closestV;
+	}
+
+	private HEdge findClosestValidNeighbor(HEdge edge, boolean delaunay) {
+		HEdge next = root.getNext();
+
+		if(!VectorUtil.ccw(root.getGraphPoint().getPoint(), next.getGraphPoint().getPoint(),
+				edge.getGraphPoint().getPoint())){
+			return null;
+		}
+
+		HEdge candEdge = edge;
+		boolean inValid = false;
+
+		if(delaunay){
+		    Vertex cand = candEdge.getGraphPoint().getPoint();
+			HEdge e = candEdge.getNext();
+			while (e != candEdge){
+				if(e.getGraphPoint() == root.getGraphPoint() 
+						|| e.getGraphPoint() == next.getGraphPoint() 
+						|| e.getGraphPoint().getPoint() == cand){
+					e = e.getNext();
+					continue;
+				}
+				inValid = VectorUtil.inCircle(root.getGraphPoint().getPoint(), next.getGraphPoint().getPoint(),
+						cand, e.getGraphPoint().getPoint());
+				if(inValid){
+					break;
+				}
+				e = e.getNext();
+			}
+		}
+		if(!inValid){
+			return candEdge;
+		}
+		return null;
+	}
+
+	/** Create a triangle from the param vertices only if
+	 * the triangle is valid. IE not outside region.
+	 * @param v1 vertex 1
+	 * @param v2 vertex 2
+	 * @param v3 vertex 3
+	 * @param root and edge of this triangle
+	 * @return the triangle iff it satisfies, null otherwise
+	 */
+	private Triangle createTriangle(Vertex v1, Vertex v2, Vertex v3, HEdge rootT){
+		Triangle t = new Triangle(v1, v2, v3);
+		t.setVerticesBoundary(checkVerticesBoundary(rootT));
+		return t;
+	}
+
+	private boolean[] checkVerticesBoundary(HEdge rootT) {
+		boolean[] boundary = new boolean[3];
+		HEdge e1 = rootT;
+		HEdge e2 = rootT.getNext();
+		HEdge e3 = rootT.getNext().getNext();
+
+		if(e1.getGraphPoint().isBoundaryContained()){
+				boundary[0] = true;
+		}
+		if(e2.getGraphPoint().isBoundaryContained()){
+				boundary[1] = true;
+		}
+		if(e3.getGraphPoint().isBoundaryContained()){
+				boundary[2] = true;
+		}
+		return boundary;
+	}
+
+
+	/** Check if vertex inside the Loop
+	 * @param vertex the Vertex
+	 * @return true if the vertex is inside, false otherwise
+	 */
+	public boolean checkInside(Vertex vertex) {
+		if(!box.contains(vertex.getX(), vertex.getY(), vertex.getZ())){
+			return false;
+		}
+
+		float[] center = box.getCenter();
+
+		int hits = 0;
+		HEdge current = root;
+		HEdge next = root.getNext();
+		while(next!= root){
+			if(current.getType() == HEdge.INNER || next.getType() == HEdge.INNER){
+				current = next;
+				next = current.getNext();
+				continue;
+			}
+			Vertex vert1 = current.getGraphPoint().getPoint();
+			Vertex vert2 = next.getGraphPoint().getPoint();
+
+			/** The ray is P0+s*D0, where P0 is the ray origin, D0 is a direction vector and s >= 0. 
+			 * The segment is P1+t*D1, where P1 and P1+D1 are the endpoints, and 0 <= t <= 1. 
+			 * perp(x,y) = (y,-x).
+			 * if Dot(perp(D1),D0) is not zero,
+			 * s = Dot(perp(D1),P1-P0)/Dot(perp(D1),D0)
+			 * t = Dot(perp(D0),P1-P0)/Dot(perp(D1),D0)
+			 */
+
+			float[] d0 = new float[]{center[0] - vertex.getX(), center[1]-vertex.getY(),
+					center[2]-vertex.getZ()};
+			float[] d1 = {vert2.getX() - vert1.getX(), vert2.getY() - vert1.getY(),
+					vert2.getZ() - vert1.getZ()};
+
+			float[] prep_d1 = {d1[1],-1*d1[0], d1[2]};
+			float[] prep_d0 = {d0[1],-1*d0[0], d0[2]};
+
+			float[] p0p1 = new float[]{vert1.getX() - vertex.getX(), vert1.getY() - vertex.getY(),
+					vert1.getZ() - vertex.getZ()};
+
+			float dotD1D0 = VectorUtil.dot(prep_d1, d0);
+			if(dotD1D0 == 0){ 
+				/** ray parallel to segment */
+				current = next;
+				next = current.getNext();
+				continue;
+			}
+
+			float s = VectorUtil.dot(prep_d1,p0p1)/dotD1D0;
+			float t = VectorUtil.dot(prep_d0,p0p1)/dotD1D0;
+
+			if(s >= 0 && t >= 0 && t<= 1){
+				hits++;
+			}
+			current = next;
+			next = current.getNext();
+		}
+
+		if(hits % 2 != 0){ 
+			/** check if hit count is even */
+			return true;
+		}
+		return false;
+	}
+
+	public int computeLoopSize(){
+		int size = 0;
+		HEdge e = root;
+		do{
+			size++;
+			e = e.getNext();
+		}while(e != root);
+		return size;
+	}
+}
diff --git a/turtle2d/src/jogamp/graph/curve/text/GlyphShape.java b/turtle2d/src/jogamp/graph/curve/text/GlyphShape.java
new file mode 100644
index 000000000..36ba57244
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/text/GlyphShape.java
@@ -0,0 +1,161 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.graph.curve.text;
+
+import java.util.ArrayList;
+
+import jogamp.graph.geom.plane.PathIterator;
+
+import com.jogamp.graph.geom.Vertex;
+import com.jogamp.graph.geom.Triangle;
+
+import com.jogamp.graph.curve.OutlineShape;
+import com.jogamp.graph.math.Quaternion;
+
+public class GlyphShape {
+	
+	private Quaternion quat= null;
+	private int numVertices = 0;
+	private OutlineShape shape = null;
+	
+	/** Create a new Glyph shape
+	 * based on Parametric curve control polyline
+	 */
+	public GlyphShape(Vertex.Factory<? extends Vertex> factory){
+		shape = new OutlineShape(factory);
+	}
+	
+	/** Create a GlyphShape from a font Path Iterator
+	 * @param pathIterator the path iterator
+	 * 
+	 * @see PathIterator
+	 */
+	public GlyphShape(Vertex.Factory<? extends Vertex> factory, PathIterator pathIterator){
+		this(factory);
+		
+		if(null != pathIterator){
+			while(!pathIterator.isDone()){
+				float[] coords = new float[6];
+				int segmentType = pathIterator.currentSegment(coords);
+				addOutlineVerticesFromGlyphVector(coords, segmentType);
+
+				pathIterator.next();
+			}
+		}
+		shape.transformOutlines(OutlineShape.QUADRATIC_NURBS);
+	}
+	
+	public final Vertex.Factory<? extends Vertex> vertexFactory() { return shape.vertexFactory(); }
+	
+	private void addVertexToLastOutline(Vertex vertex){
+		shape.addVertex(vertex);
+	}
+	
+	private void addOutlineVerticesFromGlyphVector(float[] coords, int segmentType){
+		if(segmentType == PathIterator.SEG_MOVETO){
+			if(!shape.getLastOutline().isEmpty()){
+				shape.addEmptyOutline();
+			}			
+			Vertex vert = vertexFactory().create(coords[0],coords[1]);
+			vert.setOnCurve(true);
+			addVertexToLastOutline(vert);
+			
+			numVertices++;
+		}
+		else if(segmentType == PathIterator.SEG_LINETO){
+			Vertex vert1 = vertexFactory().create(coords[0],coords[1]);
+			vert1.setOnCurve(true);
+			addVertexToLastOutline(vert1);
+			
+			numVertices++;
+		}
+		else if(segmentType == PathIterator.SEG_QUADTO){
+			Vertex vert1 = vertexFactory().create(coords[0],coords[1]);
+			vert1.setOnCurve(false);
+			addVertexToLastOutline(vert1);
+
+			Vertex vert2 = vertexFactory().create(coords[2],coords[3]);
+			vert2.setOnCurve(true);
+			addVertexToLastOutline(vert2);
+			
+			numVertices+=2;
+		}
+		else if(segmentType == PathIterator.SEG_CUBICTO){
+			Vertex vert1 = vertexFactory().create(coords[0],coords[1]);
+			vert1.setOnCurve(false);
+			addVertexToLastOutline(vert1);
+
+			Vertex vert2 = vertexFactory().create(coords[2],coords[3]);
+			vert2.setOnCurve(false);
+			addVertexToLastOutline(vert2);
+
+			Vertex vert3 = vertexFactory().create(coords[4],coords[5]);
+			vert3.setOnCurve(true);
+			addVertexToLastOutline(vert3);
+			
+			numVertices+=3;
+		}
+		else if(segmentType == PathIterator.SEG_CLOSE){
+			shape.closeLastOutline();
+		}
+	}
+	
+	public int getNumVertices() {
+		return numVertices;
+	}
+	
+	/** Get the rotational Quaternion attached to this Shape
+	 * @return the Quaternion Object
+	 */
+	public Quaternion getQuat() {
+		return quat;
+	}
+	
+	/** Set the Quaternion that shall defien the rotation
+	 * of this shape.
+	 * @param quat
+	 */
+	public void setQuat(Quaternion quat) {
+		this.quat = quat;
+	}
+	
+	/** Triangluate the glyph shape
+	 * @param sharpness sharpness of the curved regions default = 0.5
+	 * @return ArrayList of triangles which define this shape
+	 */
+	public ArrayList<Triangle> triangulate(float sharpness){
+		return shape.triangulate(sharpness);
+	}
+
+	/** Get the list of Vertices of this Object
+	 * @return arrayList of Vertices
+	 */
+	public ArrayList<Vertex> getVertices(){
+		return shape.getVertices();
+	}	
+}
diff --git a/turtle2d/src/jogamp/graph/curve/text/GlyphString.java b/turtle2d/src/jogamp/graph/curve/text/GlyphString.java
new file mode 100644
index 000000000..808e3a415
--- /dev/null
+++ b/turtle2d/src/jogamp/graph/curve/text/GlyphString.java
@@ -0,0 +1,163 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package jogamp.graph.curve.text;
+
+import java.util.ArrayList;
+
+import com.jogamp.graph.geom.Vertex;
+import com.jogamp.graph.geom.Triangle;
+import com.jogamp.graph.geom.opengl.SVertex;
+
+import javax.media.opengl.GLContext;
+
+import jogamp.graph.geom.plane.AffineTransform;
+import jogamp.graph.geom.plane.Path2D;
+import jogamp.graph.geom.plane.PathIterator;
+
+
+import com.jogamp.graph.curve.Region;
+import com.jogamp.graph.curve.RegionFactory;
+import com.jogamp.opengl.util.PMVMatrix;
+import com.jogamp.opengl.util.glsl.ShaderState;
+
+public class GlyphString {
+	private final Vertex.Factory<? extends Vertex> pointFactory;	
+	private ArrayList<GlyphShape> glyphs = new ArrayList<GlyphShape>();
+	private String str = "";
+	private String fontname = "";
+	private Region region;
+	
+	private SVertex origin = new SVertex();
+
+	/** Create a new GlyphString object
+	 * @param fontname the name of the font that this String is
+	 * associated with
+	 * @param str the string object
+	 */
+	public GlyphString(Vertex.Factory<? extends Vertex> factory, String fontname, String str){
+		pointFactory = factory;
+		this.fontname = fontname;
+		this.str = str;
+	}
+	
+	public final Vertex.Factory<? extends Vertex> pointFactory() { return pointFactory; }
+	
+	public void addGlyphShape(GlyphShape glyph){
+		glyphs.add(glyph);
+	}
+	public String getString(){
+		return str;
+	}
+
+	/** Creates the Curve based Glyphs from a Font 
+	 * @param paths a list of FontPath2D objects that define the outline
+	 * @param affineTransform a global affine transformation applied to the paths.
+	 */
+	public void createfromFontPath(Path2D[] paths, AffineTransform affineTransform){
+		final int numGlyps = paths.length;
+		for (int index=0;index<numGlyps;index++){
+			if(paths[index] == null){
+				continue;
+			}
+			PathIterator iterator = paths[index].iterator(affineTransform);
+			GlyphShape glyphShape = new GlyphShape(pointFactory, iterator);
+			
+			if(glyphShape.getNumVertices() < 3) {
+				continue;
+			}			
+			addGlyphShape(glyphShape);
+		}
+	}
+	
+	private ArrayList<Triangle> initializeTriangles(float sharpness){
+		ArrayList<Triangle> triangles = new ArrayList<Triangle>();
+		for(GlyphShape glyph:glyphs){
+			ArrayList<Triangle> tris = glyph.triangulate(sharpness);
+			triangles.addAll(tris);
+		}
+		return triangles;
+	}
+	
+	/** Generate a OGL Region to represent this Object.
+	 * @param context the GLContext which the region is defined by.
+	 * @param shaprness the curvature sharpness of the object.
+	 * @param st shader state
+	 */
+	public void generateRegion(GLContext context, float shaprness, ShaderState st, int type){
+		region = RegionFactory.create(context, st, type);
+		region.setFlipped(true);
+		
+		ArrayList<Triangle> tris = initializeTriangles(shaprness);
+		region.addTriangles(tris);
+		
+		int numVertices = region.getNumVertices();
+		for(GlyphShape glyph:glyphs){
+			ArrayList<Vertex> gVertices = glyph.getVertices();
+			for(Vertex vert:gVertices){
+				vert.setId(numVertices++);
+			}
+			region.addVertices(gVertices);
+		}
+		
+		/** initialize the region */
+		region.update();
+	}
+	
+	/** Generate a Hashcode for this object 
+	 * @return a string defining the hashcode
+	 */
+	public String getTextHashCode(){
+		return "" + fontname.hashCode() + str.hashCode();
+	}
+
+	/** Render the Object based using the associated Region
+	 *  previously generated.
+	 */
+	public void renderString3D() {
+		region.render(null, 0, 0, 0);
+	}
+	/** Render the Object based using the associated Region
+	 *  previously generated.
+	 */
+	public void renderString3D(PMVMatrix matrix, int vp_width, int vp_height, int size) {
+		region.render(matrix, vp_width, vp_height, size);
+	}
+	
+	/** Get the Origion of this GlyphString
+	 * @return 
+	 */
+	public Vertex getOrigin() {
+		return origin;
+	}
+
+	/** Destroy the associated OGL objects
+	 */
+	public void destroy(){
+		region.destroy();
+	}
+}