Initial creation of j3d-examples sources in CVS repository

1 files changed, 114 insertions, 0 deletions

diff --git a/src/FourByFour/Cylinder.java b/src/FourByFour/Cylinder.java
new file mode 100644
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+++ b/src/FourByFour/Cylinder.java
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+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2004 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution 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.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may 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 OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS 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 SUN OR ITS 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 SUN HAS BEEN 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.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+import javax.media.j3d.*;
+import javax.vecmath.*;
+
+public class Cylinder {
+   
+   float verts[];
+   float normals[];
+   QuadArray quad = null;
+   float div = 3.0f;
+   Shape3D shape;
+
+   public Cylinder(float x, float z, float radius, float length, int quality, Appearance a) {
+
+      if (quality < 3) quality = 3;
+
+      div = (float) quality;
+      
+      verts = new float[quality*12];
+      normals = new float[quality*12];
+
+      double inc = 2.0*Math.PI/(double)div;
+      for (int i=0; i< quality; i++){
+	 float z1 = radius * (float)Math.sin((double)i*inc) + z;
+	 float x1 = radius * (float)Math.cos((double)i*inc) + x;
+	 float z2 = radius * (float)Math.sin((double)(i+1)*inc) + z;
+	 float x2 = radius * (float)Math.cos((double)(i+1)*inc) + x;
+
+	 verts[12*i]    = x1;
+	 verts[12*i+1]  = -length/2.f;
+	 verts[12*i+2]  = z1;
+	 verts[12*i+3]  = x1;
+	 verts[12*i+4]  = length/2.f;
+	 verts[12*i+5]  = z1;
+	 verts[12*i+6]  = x2;
+	 verts[12*i+7]  = length/2.f;
+	 verts[12*i+8]  = z2;
+	 verts[12*i+9]  = x2;
+	 verts[12*i+10] = -length/2.f;
+	 verts[12*i+11] = z2;
+	 
+	 float nz1 = (float)Math.sin((double)i*inc);
+	 float nx1 = (float)Math.cos((double)i*inc);
+	 float nz2 = (float)Math.sin((double)(i+1)*inc);
+	 float nx2 = (float)Math.cos((double)(i+1)*inc);
+
+	 normals[12*i] = nx1;
+	 normals[12*i+1] = 0.0f;
+	 normals[12*i+2] = nz1;
+	 normals[12*i+3] = nx1;
+	 normals[12*i+4] = 0.0f;
+	 normals[12*i+5] = nz1;
+	 normals[12*i+6] = nx2;
+	 normals[12*i+7] = 0.0f;
+	 normals[12*i+8] = nz2;
+	 normals[12*i+9] = nx2;
+	 normals[12*i+10] = 0.0f;
+	 normals[12*i+11] = nz2;
+      }
+      
+      quad = new QuadArray(quality*4, QuadArray.COORDINATES |
+                                      QuadArray.NORMALS );
+      quad.setCoordinates(0, verts);
+      quad.setNormals(0, normals);
+      shape = new Shape3D(quad, a);
+   }
+
+   Shape3D getShape(){
+      return shape;
+   }
+}