public void modify(ShadingState state)
{
Point3 p = state.transformWorldToObject(state.getPoint());
p.x *= size;
p.y *= size;
p.z *= size;
Vector3 normal = state.transformNormalWorldToObject(state.getNormal());
double f0 = f(p.x, p.y, p.z);
double fx = f(p.x + .0001, p.y, p.z);
double fy = f(p.x, p.y + .0001, p.z);
double fz = f(p.x, p.y, p.z + .0001);
normal.x -= scale * (float)((fx - f0) / .0001);
normal.y -= scale * (float)((fy - f0) / .0001);
normal.z -= scale * (float)((fz - f0) / .0001);
normal.normalize();
state.getNormal().set(state.transformNormalObjectToWorld(normal));
state.getNormal().normalize();
state.setBasis(OrthoNormalBasis.makeFromW(state.getNormal()));
}
public void modify(ShadingState state)
{
Point3 p = state.transformWorldToObject(state.getPoint());
p.x *= size;
p.y *= size;
p.z *= size;
Vector3 normal = state.transformNormalWorldToObject(state.getNormal());
double f0 = f(p.x, p.y, p.z);
double fx = f(p.x + .0001, p.y, p.z);
double fy = f(p.x, p.y + .0001, p.z);
double fz = f(p.x, p.y, p.z + .0001);
normal.x -= scale * (float)((fx - f0) / .0001);
normal.y -= scale * (float)((fy - f0) / .0001);
normal.z -= scale * (float)((fz - f0) / .0001);
normal.normalize();
state.getNormal().set(state.transformNormalObjectToWorld(normal));
state.getNormal().normalize();
state.setBasis(OrthoNormalBasis.makeFromW(state.getNormal()));
}
