From 033976c152a23455d37bb90898037a477cd737bd Mon Sep 17 00:00:00 2001
From: Steve <steveb9@u.washington.edu>
Date: Wed, 16 Mar 2011 09:02:22 +0000
Subject: couldn't help myself.  added the ground disabled its pickable in
 mouse stuff on the ground implemented re-insert of ground after reset add two
 images snow and sand created separate methods for ground and background

---
 src/tesseract/objects/Ground.java | 123 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 src/tesseract/objects/Ground.java

(limited to 'src/tesseract/objects')

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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