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Diffstat (limited to 'src/tesseract/objects/Toroid.java')
| -rw-r--r-- | src/tesseract/objects/Toroid.java | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/tesseract/objects/Toroid.java b/src/tesseract/objects/Toroid.java new file mode 100644 index 0000000..1961818 --- /dev/null +++ b/src/tesseract/objects/Toroid.java @@ -0,0 +1,137 @@ +/*
+ * Icosahedron.java
+ * TCSS 491 Computational Worlds
+ * Phillip Cardon
+ */
+package tesseract.objects;
+
+import javax.media.j3d.Appearance;
+import javax.media.j3d.IndexedQuadArray;
+import javax.media.j3d.Material;
+import javax.media.j3d.PointArray;
+import javax.media.j3d.Shape3D;
+import javax.media.j3d.Transform3D;
+import javax.vecmath.Point3f;
+import javax.vecmath.Vector3f;
+
+import com.sun.j3d.utils.geometry.GeometryInfo;
+import com.sun.j3d.utils.geometry.NormalGenerator;
+
+/**
+ * Represents a Toroid, or donut like shape.
+ * @author Phillip Cardon
+ * @version 0.9a
+ */
+public class Toroid extends ForceableObject {
+ //CONSTANTS
+ private static final int MAX_ANGLE = 120;
+ //FIELDS
+ private Shape3D myShape;
+
+ private float myScale;
+
+ //CONSTRUCTORS
+
+
+ /**
+ * @param position starting position.
+ * @param mass of object.
+ * @param scale mesh scale.
+ * @param sliceRadius radius of slice "flesh."
+ * @param sliceDivisions resolution of slice "flesh" circles.
+ * @param arcRadius Radius of donut circle
+ * @param arcDivisions resolution of slices on donut.
+ */
+ public Toroid(final Vector3f position, final float mass, final float scale,
+ final float sliceRadius, final int sliceDivisions,
+ final float arcRadius, final int arcDivisions) {
+ super(position, mass);
+ myScale = scale;
+ }
+
+
+ /**
+ * Creates donut.
+ * @param sliceRadius radius of slice "flesh."
+ * @param sliceDivisions resolution of slice "flesh" circles.
+ * @param arcRadius Radius of donut circle
+ * @param arcDivisions resolution of slices on donut.
+ */
+ public void buildToroid(final float sliceRadius, final int sliceDivisions,
+ final float arcRadius, final int arcDivisions) {
+ Point3f[][] coordinates = new Point3f[arcDivisions][sliceDivisions];
+ final float arcAngle = (float) (Math.PI * 2.0);
+ final float sliceDivisionAngle = 2 * (float) Math.PI / sliceDivisions;
+
+ for (int i = 0; i < sliceDivisions; i++) {
+ coordinates[0][i] = new Point3f(sliceRadius
+ * (float) Math.cos(i * sliceDivisionAngle), 0f, sliceRadius
+ * (float) Math.sin(i * sliceDivisionAngle));
+ }
+
+ Transform3D trans3D = new Transform3D();
+ trans3D.setTranslation(new Vector3f(arcRadius, 0, 0));
+ Transform3D tmp = new Transform3D();
+ tmp.rotZ(-arcAngle / (arcDivisions - 1));
+ trans3D.mul(tmp);
+ tmp.setIdentity();
+ tmp.setTranslation(new Vector3f(-arcRadius, 0, 0));
+ trans3D.mul(tmp);
+
+ for (int j = 1; j < arcDivisions; j++) {
+ for (int i = 0; i < sliceDivisions; i++) {
+ coordinates[j][i] = new Point3f(coordinates[j - 1][i]);
+ trans3D.transform(coordinates[j][i]);
+ coordinates[j][i].scale((float) myScale);
+ }
+ }
+
+ IndexedQuadArray geometry = new IndexedQuadArray(arcDivisions
+ * sliceDivisions, PointArray.COORDINATES, 4 * sliceDivisions
+ * (arcDivisions - 1));
+ for (int j = 0; j < arcDivisions; j++) {
+ geometry.setCoordinates(j * sliceDivisions, coordinates[j]);
+ }
+
+ int index = 0;
+ int last = 0;
+ for (int j = 0; j < arcDivisions - 2; j++) {
+ for (int i = 0; i < sliceDivisions; i++) {
+ geometry.setCoordinateIndex(index++, j * sliceDivisions + i);
+ geometry.setCoordinateIndex(index++, (j + 1) * sliceDivisions
+ + i);
+ geometry.setCoordinateIndex(index++, (j + 1) * sliceDivisions
+ + (i + 1) % sliceDivisions);
+ geometry.setCoordinateIndex(index++, j * sliceDivisions
+ + (i + 1) % sliceDivisions);
+ }
+ last = j;
+ }
+ last++;
+ for (int i = 0; i < sliceDivisions; i++) {
+ geometry.setCoordinateIndex(index++, last * sliceDivisions + i);
+ geometry.setCoordinateIndex(index++, (0) * sliceDivisions + i);
+ geometry.setCoordinateIndex(index++, (0) * sliceDivisions + (i + 1)
+ % sliceDivisions);
+ geometry.setCoordinateIndex(index++, last * sliceDivisions
+ + (i + 1) % sliceDivisions);
+ }
+
+
+ GeometryInfo gInfo = new GeometryInfo(geometry);
+ new NormalGenerator().generateNormals(gInfo);
+ gInfo.convertToIndexedTriangles();
+ Shape3D shape = new Shape3D(gInfo.getGeometryArray());
+
+ Appearance app = new Appearance();
+ Material mat = new Material();
+ mat.setDiffuseColor(1, 0, 0);
+ app.setMaterial(mat);
+ shape.setAppearance(app);
+ getTransformGroup().addChild(myShape);
+ }
+
+ //public Group getGroup(){
+ // return (Group) myTG.cloneTree();
+ //}
+}
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