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Diffstat (limited to 'src/tesseract/objects/Ground.java')
| -rw-r--r-- | src/tesseract/objects/Ground.java | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/tesseract/objects/Ground.java b/src/tesseract/objects/Ground.java new file mode 100644 index 0000000..980e9dd --- /dev/null +++ b/src/tesseract/objects/Ground.java @@ -0,0 +1,123 @@ +/*
+ * Class PlanarPolygon
+ * TCSS 491 Computational Worlds
+ * Steve Bradshaw
+ */
+
+package tesseract.objects;
+
+import javax.media.j3d.Appearance;
+import javax.media.j3d.Geometry;
+import javax.media.j3d.ImageComponent2D;
+import javax.media.j3d.Material;
+import javax.media.j3d.Node;
+import javax.media.j3d.PolygonAttributes;
+import javax.media.j3d.Shape3D;
+import javax.media.j3d.Texture;
+import javax.media.j3d.Texture2D;
+import javax.media.j3d.TriangleFanArray;
+import javax.vecmath.Point3f;
+import javax.vecmath.TexCoord2f;
+import javax.vecmath.Vector3f;
+
+import com.sun.j3d.utils.geometry.GeometryInfo;
+import com.sun.j3d.utils.geometry.NormalGenerator;
+import com.sun.j3d.utils.image.TextureLoader;
+
+/**
+ * This class creates an gourn object using Mathew Aldens design
+ * of a circle, but this adds lava texture and lower divisions
+ *
+ * @author Steve Bradshaw & Mathew Alden
+ * @version 8 Feb 2011
+ */
+public class Ground extends PhysicalObject {
+
+ /**
+ * Default mass.
+ */
+ private static final float DEFAULT_MASS = Float.POSITIVE_INFINITY;
+
+ /**
+ * Number of divisions in the sphere.
+ */
+ public static final int DEFAULT_DIVISIONS = 8;
+
+ /**
+ * A Default radius.
+ */
+ public static final float DEFAULT_RADIUS = 100f;
+
+ /**
+ * Create a new Ellipsoid.
+ *
+ * @param position Initial position.
+ * @param radius a float for the size of the base sphere.
+ */
+ public Ground(final Vector3f position, final float radius) {
+ super(position, DEFAULT_MASS);
+
+ setShape(createShape(radius, DEFAULT_DIVISIONS));
+
+ /*if (inverseMass != 0) {
+ inverseInertiaTensor.m00 = 1f / 4 / inverseMass * radius * radius;
+ inverseInertiaTensor.m11 = 2 * inverseInertiaTensor.m00;
+ inverseInertiaTensor.m22 = inverseInertiaTensor.m00;
+ inverseInertiaTensor.invert();
+ }*/
+ updateTransformGroup();
+
+ }
+
+ /**
+ * This method creates a planar polygon shape with lava texture.
+ *
+ * @param radius a float for the size of the base polygon.
+ * @param divisions an int for the number of divisons.
+ * @param appearance an Appearance object.
+ * @return Node a polygon.
+ */
+ private Node createShape(final float radius, final int divisions) {
+ TriangleFanArray geometry = new TriangleFanArray(divisions,
+ TriangleFanArray.COORDINATES | TriangleFanArray.TEXTURE_COORDINATE_2, new int[] {divisions});
+ for (int i = 0; i < divisions; i++) {
+ float baseX = (float)Math.cos(2 * Math.PI * i / divisions);
+ float baseZ = -(float)Math.sin(2 * Math.PI * i / divisions);
+ geometry.setCoordinate(i, new Point3f(radius * baseX, 0, radius * baseZ));
+ geometry.setTextureCoordinate(0, i, new TexCoord2f((baseX + 1) / 2, (-baseZ + 1) / 2));
+ }
+
+ GeometryInfo gInfo = new GeometryInfo(geometry);
+ new NormalGenerator().generateNormals(gInfo);
+ gInfo.convertToIndexedTriangles();
+ Shape3D polygon = new Shape3D(gInfo.getGeometryArray());
+
+ TextureLoader tl = new TextureLoader("sand.jpg", null);
+ ImageComponent2D image = tl.getImage();
+ int width = image.getWidth();
+ int height = image.getHeight();
+ Texture2D texture = new Texture2D(Texture.MULTI_LEVEL_MIPMAP, Texture.RGB, width, height);
+
+ int imageLevel = 0;
+ texture.setImage(imageLevel, image);
+ while (width > 1 || height > 1) {
+ imageLevel++;
+ if (width > 1) width /= 2;
+ if (height > 1) height /= 2;
+ texture.setImage(imageLevel, tl.getScaledImage(width, height));
+ }
+ texture.setMagFilter(Texture2D.NICEST);
+ texture.setMinFilter(Texture2D.NICEST);
+ Material mat = new Material();
+ mat.setDiffuseColor(1, 0, 0);
+
+ Appearance appearance = new Appearance();
+ appearance.setTexture(texture);
+ appearance.setMaterial(mat);
+ PolygonAttributes polyAttr = new PolygonAttributes(PolygonAttributes.POLYGON_FILL, PolygonAttributes.CULL_NONE, 0);
+ appearance.setPolygonAttributes(polyAttr);
+ geometry.setCapability(Geometry.ALLOW_INTERSECT);
+ polygon = new Shape3D(geometry, appearance);
+ return polygon;
+ }
+}
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