/** Returns the function's value at the given point. */
public static float getValueAt(Vector3f p, ArrayList<Primitive> primitives) {
float bestValue = Float.MAX_VALUE;
// Find the primitive which surface is the closest to the isosurface.
for (Primitive primitive : primitives) {
bestValue = Math.min(primitive.getPointValue(p), bestValue);
}
return bestValue;
}
/** Returns the function's normal at the given point. */
public static Vector3f getNormalAt(Vector3f p, ArrayList<Primitive> primitives) {
float bestValue = Float.MAX_VALUE;
Primitive bestPrimitive = null;
// Find the primitive which surface is the closest to the isosurface.
for (Primitive primitive : primitives) {
float newValue = Math.abs(primitive.getPointValue(p));
if (newValue < bestValue) {
bestValue = newValue;
bestPrimitive = primitive;
}
}
// Get the normal from that primitive.
Vector3f result = bestPrimitive.getPointNormal(p);
return result;
}