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package tesseract.objects;
import javax.media.j3d.IndexedQuadArray;
import javax.media.j3d.PointArray;
import javax.media.j3d.Transform3D;
import javax.vecmath.Point3f;
import javax.vecmath.Vector3f;
public class Cannon extends PhysicalObject{
public Cannon(Vector3f thePosition, float mass) {
super(thePosition, mass);
// TODO Auto-generated constructor stub
buildShape(14, 7f, 2f, 2f);
}
private void buildShape(final int theDivisions, final float length,
final float breechRadius, final float gunThickness) {
Point3f[] coordinates = new Point3f[theDivisions * 4];
final float barrelRadius = breechRadius + gunThickness;
final float arcAngle = (float) (Math.PI * 2.0);
final float gunDivAngle = 2 * (float) Math.PI / theDivisions;
Transform3D center = new Transform3D();
for (int i = 0; i < theDivisions; i++) {
coordinates[i] = new Point3f(breechRadius
* (float) Math.cos(i * gunDivAngle), 0f, breechRadius
* (float) Math.sin(i * gunDivAngle));
}
for (int i = theDivisions; i < theDivisions * 2; i++) {
coordinates[i] = new Point3f(breechRadius
* (float) Math.cos(i * gunDivAngle), length, breechRadius
* (float) Math.sin(i * gunDivAngle));
}
for (int i = theDivisions * 2; i < theDivisions * 3; i++) {
coordinates[i] = new Point3f(barrelRadius
* (float) Math.cos(i * gunDivAngle), 0f, barrelRadius
* (float) Math.sin(i * gunDivAngle));
}
for (int i = theDivisions * 3; i < theDivisions * 4; i++) {
coordinates[i] = new Point3f(barrelRadius
* (float) Math.cos(i * gunDivAngle), length, barrelRadius
* (float) Math.sin(i * gunDivAngle));
}
IndexedQuadArray geometry = new IndexedQuadArray(theDivisions * 4, PointArray.COORDINATES,
theDivisions * 4);
int topInsideStop = 0;
int index = 0;
for (int i = 0; i < theDivisions; i++) {
geometry.setCoordinate(index++, coordinates[i]);
geometry.setCoordinate(index++, coordinates[(theDivisions + i) % (2 * theDivisions)]);
geometry.setCoordinate(index++, coordinates[(theDivisions + i + 1) % (2 * theDivisions)]);
geometry.setCoordinate(index++, coordinates[(i + 1) % theDivisions]);
}
for (int i = theDivisions * 2; i < theDivisions * 3; i++) {
geometry.setCoordinate(index++, coordinates[i]);
geometry.setCoordinate(index++, coordinates[(theDivisions + i) % (4 * theDivisions)]);
geometry.setCoordinate(index++, coordinates[(theDivisions + i + 1) % (4 * theDivisions)]);
geometry.setCoordinate(index++, coordinates[((i + 1) % theDivisions) + theDivisions * 2]);
}
for (int i = 0; i < theDivisions; i++) {
geometry.setCoordinate(index++, coordinates[i]);
geometry.setCoordinate(index++, coordinates[i + 3 * theDivisions]);
geometry.setCoordinate(index++, coordinates[(1 + i + 3 * theDivisions) % theDivisions]);
geometry.setCoordinate(index++, coordinates[(i + 1) % theDivisions]);
}
}
}
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