Add initial GPU based curve rendering implementation, utilizing TTF fonts and manual shapes

1 files changed, 169 insertions, 0 deletions

diff --git a/src/jogamp/graph/curve/text/GlyphShape.java b/src/jogamp/graph/curve/text/GlyphShape.java
new file mode 100644
index 000000000..9862a5407
--- /dev/null
+++ b/src/jogamp/graph/curve/text/GlyphShape.java
@@ -0,0 +1,169 @@
+/**
+ * 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.plane.PathIterator;
+import com.jogamp.graph.geom.Line;
+import com.jogamp.graph.geom.Point;
+import com.jogamp.graph.geom.PointTex;
+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(Point.Factory<? extends PointTex> factory){
+		shape = new OutlineShape(factory);
+	}
+	
+	/** Create a GlyphShape from a font Path Iterator
+	 * @param pathIterator the path iterator
+	 * 
+	 * @see PathIterator
+	 */
+	public GlyphShape(Point.Factory<? extends PointTex> 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 Point.Factory<? extends PointTex> pointFactory() { return shape.pointFactory(); }
+	
+	private void addVertexToLastOutline(PointTex vertex){
+		shape.addVertex(vertex);
+	}
+	
+	private void addOutlineVerticesFromGlyphVector(float[] coords, int segmentType){
+		if(segmentType == PathIterator.SEG_MOVETO){
+			if(!shape.getLastOutline().isEmpty()){
+				shape.addEmptyOutline();
+			}			
+			PointTex vert = pointFactory().create(coords[0],coords[1]);
+			vert.setOnCurve(true);
+			addVertexToLastOutline(vert);
+			
+			numVertices++;
+		}
+		else if(segmentType == PathIterator.SEG_LINETO){
+			PointTex vert1 = pointFactory().create(coords[0],coords[1]);
+			vert1.setOnCurve(true);
+			addVertexToLastOutline(vert1);
+			
+			numVertices++;
+		}
+		else if(segmentType == PathIterator.SEG_QUADTO){
+			PointTex vert1 = pointFactory().create(coords[0],coords[1]);
+			vert1.setOnCurve(false);
+			addVertexToLastOutline(vert1);
+
+			PointTex vert2 = pointFactory().create(coords[2],coords[3]);
+			vert2.setOnCurve(true);
+			addVertexToLastOutline(vert2);
+			
+			numVertices+=2;
+		}
+		else if(segmentType == PathIterator.SEG_CUBICTO){
+			PointTex vert1 = pointFactory().create(coords[0],coords[1]);
+			vert1.setOnCurve(false);
+			addVertexToLastOutline(vert1);
+
+			PointTex vert2 = pointFactory().create(coords[2],coords[3]);
+			vert2.setOnCurve(false);
+			addVertexToLastOutline(vert2);
+
+			PointTex vert3 = pointFactory().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<PointTex>> triangulate(float sharpness){
+		return shape.triangulate(sharpness);
+	}
+
+	/** Get the list of Vertices of this Object
+	 * @return arrayList of Vertices
+	 */
+	public ArrayList<PointTex> getVertices(){
+		return shape.getVertices();
+	}
+	
+	/** Get the list of AA lines defined by this object
+	 * @return arraylist of lines
+	 */
+	public ArrayList<Line<PointTex>> getLines(){
+		return shape.getLines();
+	}
+}