sphere

gistfile1.txt

private void createGeometry(float radius, short rings, short sectors)	{

	float R = 1f/(float)(rings-1);
	float S = 1f/(float)(sectors-1);
	short r, s;
	float x, y, z;

	points = new float[rings * sectors * 3];
	normals = new float[rings * sectors * 3];
	texcoords = new float[rings * sectors * 2];

	int t = 0, v = 0, n = 0;
	for(r = 0; r < rings; r++) {
		for(s = 0; s < sectors; s++) {
			y = (float) Math.sin( -PI_2 + PI * r * R );
			x = (float) (Math.cos(2*PI * s * S) * Math.sin( PI * r * R ));
			z = (float) (Math.sin(2*PI * s * S) * Math.sin( PI * r * R ));

			texcoords[t++] = s*S;
			texcoords[t++] = r*R;

			points[v++] = x * radius;
			points[v++] = y * radius;
			points[v++] = z * radius;

			//Log.i("Sphere","Added point (" + x +", " + y + ", " +z +")");

			normals[n++] = x;
			normals[n++] = y;
			normals[n++] = z;
		}


	}
	int counter = 0;
	indices = new short[rings * sectors * 6];
	for(r = 0; r < rings - 1; r++){
		for(s = 0; s < sectors-1; s++) {
			indices[counter++] = (short) (r * sectors + s);      
			indices[counter++] = (short) (r * sectors + (s+1));   
			indices[counter++] = (short) ((r+1) * sectors + (s+1));  
			indices[counter++] = (short) ((r+1) * sectors + (s+1)); 
			indices[counter++] = (short) (r * sectors + (s+1));    
			indices[counter++] = (short) ((r+1) * sectors + s);    
		}
	}
}