// It's the three lines below that need changed so I have something that lies upon the sphere...	GLfloat p1[3] = {point[0], point[1], point[2]};	GLfloat p2[3] = {point[0] + 0.01f, point[1] + 0.01f, point[2] + 0.01f};	GLfloat p3[3] = {point[0] - 0.01f, point[1] - 0.01f, point[2] - 0.01f};// Now deform the points by the noise function	GLfloat p1Deform = GetHeight(p1);	GLfloat p2Deform = GetHeight(p2);	GLfloat p3Deform = GetHeight(p3);	p1[0] += p1[0] * p1Deform;	p1[0] += p1[1] * p1Deform;	p1[0] += p1[2] * p1Deform;	p2[0] += p2[0] * p2Deform;	p2[0] += p2[1] * p2Deform;	p2[0] += p2[2] * p2Deform;	p3[0] += p3[0] * p3Deform;	p3[0] += p3[1] * p3Deform;	p3[0] += p3[2] * p3Deform;// Find two vectors that lie within the plane (ie find vectors for two of the edges)	GLfloat p1_to_p2[3] = {p1[0] - p3[0], p1[1] - p3[1], p1[2] - p3[2]};	GLfloat p2_to_p3[3] = {p2[0] - p3[0], p2[1] - p3[1], p2[2] - p3[2]};	// And the normalised cross product of these two vectors will give us the normal we seek	GLfloat normal[3];	NormalizedCrossProduct (p1, p2, normal);// Spit out the normal into OpenGL or whatever	glNormal3f (normal[0], normal[1], normal[2]);