Copied JOGL_2_SANDBOX r350 on to trunk; JOGL_2_SANDBOX branch is now closed

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@352 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4

1 files changed, 292 insertions, 0 deletions

diff --git a/src/gleem/ManipPartTriBased.java b/src/gleem/ManipPartTriBased.java
new file mode 100644
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+++ b/src/gleem/ManipPartTriBased.java
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+/*
+ * gleem -- OpenGL Extremely Easy-To-Use Manipulators.
+ * Copyright (C) 1998-2003 Kenneth B. Russell ([email protected])
+ *
+ * Copying, distribution and use of this software in source and binary
+ * forms, with or without modification, is permitted provided that the
+ * following conditions are met:
+ *
+ * Distributions of source code must reproduce the copyright notice,
+ * this list of conditions and the following disclaimer in the source
+ * code header files; and Distributions of binary code must reproduce
+ * the copyright notice, this list of conditions and the following
+ * disclaimer in the documentation, Read me file, license file and/or
+ * other materials provided with the software distribution.
+ *
+ * The names of Sun Microsystems, Inc. ("Sun") and/or the copyright
+ * holder may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS," WITHOUT A WARRANTY OF ANY
+ * KIND. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, NON-INTERFERENCE, ACCURACY OF
+ * INFORMATIONAL CONTENT OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. THE
+ * COPYRIGHT HOLDER, SUN AND SUN'S LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL THE
+ * COPYRIGHT HOLDER, SUN OR SUN'S LICENSORS BE LIABLE FOR ANY LOST
+ * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGES. YOU ACKNOWLEDGE THAT THIS SOFTWARE IS NOT
+ * DESIGNED, LICENSED OR INTENDED FOR USE IN THE DESIGN, CONSTRUCTION,
+ * OPERATION OR MAINTENANCE OF ANY NUCLEAR FACILITY. THE COPYRIGHT
+ * HOLDER, SUN AND SUN'S LICENSORS DISCLAIM ANY EXPRESS OR IMPLIED
+ * WARRANTY OF FITNESS FOR SUCH USES.
+ */
+
+package gleem;
+
+import java.util.*;
+
+import gleem.linalg.*;
+import javax.media.opengl.*;
+
+/** Triangle-based manipulator part. This is the base class for most
+    of the ManipParts that GLEEM uses internally. You can feel free to
+    subclass this if you want to replace geometry in the manipulators,
+    or re-derive from ManipPart. See ManipPartLineSeg for an example. */
+
+public class ManipPartTriBased extends ManipPart {
+  private Vec3f   color;
+  private Vec3f   highlightColor;
+  private boolean highlighted;
+  private boolean pickable;
+  private boolean visible;
+  /** Direct references down to subclass-specific data */
+  private Vec3f[] vertices;
+  private Vec3f[] normals;
+  private int[]   vertexIndices;
+  private int[]   normalIndices;
+  /** Current transformation matrix */
+  private Mat4f   xform;
+  /** Transformed vertices and normals */
+  private Vec3f[] curVertices;
+  private Vec3f[] curNormals;
+
+  public ManipPartTriBased() {
+    color          = new Vec3f(0.8f, 0.8f, 0.8f);
+    highlightColor = new Vec3f(0.8f, 0.8f, 0.2f);
+    highlighted    = false;
+    pickable       = true;
+    visible	   = true;
+    vertices	   = null;
+    normals        = null;
+    vertexIndices  = null;
+    normalIndices  = null;
+    xform          = new Mat4f();
+    xform.makeIdent();
+    curVertices    = null;
+  }
+
+  /** Default color is (0.8, 0.8, 0.8) */
+  public void setColor(Vec3f color) {
+    this.color.set(color);
+  }
+
+  public Vec3f getColor() {
+    return new Vec3f(color);
+  }
+
+  /** Default highlight color is (0.8, 0.8, 0) */
+  public void setHighlightColor(Vec3f highlightColor) {
+    this.highlightColor.set(highlightColor);
+  }
+  
+  public Vec3f getHighlightColor() {
+    return new Vec3f(highlightColor);
+  }
+
+  public void intersectRay(Vec3f rayStart,
+			   Vec3f rayDirection,
+			   List  results,
+			   Manip caller) {
+    consistencyCheck();
+    if (!pickable) {
+      return;
+    }
+
+    IntersectionPoint intPt = new IntersectionPoint();
+    HitPoint hitPt = new HitPoint();
+    hitPt.manipulator = caller;
+    hitPt.manipPart = this;
+    for (int i = 0; i < vertexIndices.length; i+=3) {
+      int i0 = vertexIndices[i];
+      int i1 = vertexIndices[i+1];
+      int i2 = vertexIndices[i+2];
+      if (RayTriangleIntersection.intersectRayWithTriangle(rayStart,
+							   rayDirection,
+							   curVertices[i0],
+							   curVertices[i1],
+							   curVertices[i2],
+							   intPt)
+	  == RayTriangleIntersection.INTERSECTION) {
+	// Check for intersections behind the ray
+	if (intPt.getT() >= 0) {
+	  hitPt.rayStart = rayStart;
+	  hitPt.rayDirection = rayDirection;
+	  hitPt.intPt = intPt;
+	  results.add(hitPt);
+	}
+      }
+    }
+  }
+
+  public void setTransform(Mat4f xform) {
+    this.xform.set(xform);
+    recalcVertices();
+  }
+
+  public void highlight() {
+    highlighted = true;
+  }
+
+  public void clearHighlight() {
+    highlighted = false;
+  }
+
+  /** Default is pickable */
+  public void setPickable(boolean pickable) {
+    this.pickable = pickable;    
+  }
+
+  public boolean getPickable() {
+    return pickable;
+  }
+
+  /** Default is visible */
+  public void setVisible(boolean visible) {
+    this.visible = visible;
+  }
+
+  public boolean getVisible() {
+    return visible;
+  }
+
+  public void render(GL2 gl) {
+    if (!visible)
+      return;
+    boolean lightingOn = true;
+    // FIXME: this is too expensive; figure out another way
+    //  if (glIsEnabled(GL2ES1.GL_LIGHTING))
+    //    lightingOn = true;
+
+    if (lightingOn) {
+      gl.glEnable(GL2ES1.GL_COLOR_MATERIAL);
+      gl.glColorMaterial(GL.GL_FRONT_AND_BACK, GL2ES1.GL_AMBIENT_AND_DIFFUSE);
+    }
+    gl.glBegin(GL.GL_TRIANGLES);
+    if (highlighted)
+      gl.glColor3f(highlightColor.x(), highlightColor.y(), highlightColor.z());
+    else
+      gl.glColor3f(color.x(), color.y(), color.z());
+    int i = 0;
+    while (i < vertexIndices.length) {
+      Vec3f n0 = curNormals[normalIndices[i]];
+      Vec3f v0 = curVertices[vertexIndices[i]];
+      gl.glNormal3f(n0.x(), n0.y(), n0.z());
+      gl.glVertex3f(v0.x(), v0.y(), v0.z());
+      i++;
+
+      Vec3f n1 = curNormals[normalIndices[i]];
+      Vec3f v1 = curVertices[vertexIndices[i]];
+      gl.glNormal3f(n1.x(), n1.y(), n1.z());
+      gl.glVertex3f(v1.x(), v1.y(), v1.z());
+      i++;
+
+      Vec3f n2 = curNormals[normalIndices[i]];
+      Vec3f v2 = curVertices[vertexIndices[i]];
+      gl.glNormal3f(n2.x(), n2.y(), n2.z());
+      gl.glVertex3f(v2.x(), v2.y(), v2.z());
+      i++;
+    }
+    gl.glEnd();
+    if (lightingOn)
+      gl.glDisable(GL2ES1.GL_COLOR_MATERIAL);
+  }
+
+  //----------------------------------------------------------------------
+  // Used by subclasses to set up vertex, normals, and vertex and
+  // normal indices.
+  //
+  
+  protected void setVertices(Vec3f[] vertices) {
+    this.vertices = vertices;
+  }
+
+  protected Vec3f[] getVertices() {
+    return vertices;
+  }
+
+  protected void setNormals(Vec3f[] normals) {
+    this.normals = normals;
+  }
+
+  protected Vec3f[] getNormals() {
+    return normals;
+  }
+
+  protected void setVertexIndices(int[] vertexIndices) {
+    this.vertexIndices = vertexIndices;
+  }
+
+  protected int[] getVertexIndices() {
+    return vertexIndices;
+  }
+
+  protected void setNormalIndices(int[] normalIndices) {
+    this.normalIndices = normalIndices;
+  }
+
+  protected int[] getNormalIndices() {
+    return normalIndices;
+  }
+
+  //----------------------------------------------------------------------
+  // Internals only below this point
+  //
+
+  private void consistencyCheck() {
+    if (vertexIndices.length != normalIndices.length) {
+      throw new RuntimeException("vertexIndices.length != normalIndices.length");
+    }
+    
+    if ((vertexIndices.length % 3) != 0) {
+      throw new RuntimeException("(vertexIndices % 3) != 0");
+    }
+    
+    if ((curVertices != null) &&
+        (vertices.length != curVertices.length)) {
+      throw new RuntimeException("vertices.length != curVertices.length");
+    }
+  }
+
+  private void recalcVertices() {
+    if ((curVertices == null) ||
+        (curVertices.length != vertices.length)) {
+      curVertices = new Vec3f[vertices.length];
+      for (int i = 0; i < vertices.length; i++) {
+        curVertices[i] = new Vec3f();
+      }
+    }
+
+    for (int i = 0; i < vertices.length; i++) {
+      xform.xformPt(vertices[i], curVertices[i]);
+    }
+
+    if ((curNormals == null) ||
+        (curNormals.length != normals.length)) {
+      curNormals = new Vec3f[normals.length];
+      for (int i = 0; i < normals.length; i++) {
+        curNormals[i] = new Vec3f();
+      }
+    }
+
+    for (int i = 0; i < normals.length; i++) {
+      xform.xformDir(normals[i], curNormals[i]);
+      curNormals[i].normalize();
+    }
+  }
+}