/** 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;
}
public void generateMesh() {
if (!primitives.isEmpty()) {
// Save local rotation
Quaternion q1 = getParent().getLocalRotation().clone();
Quaternion q2 = getParent().getParent().getLocalRotation().clone();
// Align to Zero rotation.
getParent().setLocalRotation(Quaternion.IDENTITY);
getParent().getParent().setLocalRotation(Quaternion.IDENTITY);
setLocalRotation(Quaternion.IDENTITY);
// Discard previous mesh then reload it
if (meshGeometry != null) {
detachChild(meshGeometry);
}
// Build the hull again.
Mesh mesh = buildPreviewMesh();
// Re-attach the hull
meshGeometry = new Geometry("OurMesh", mesh);
// meshGeometry.setMaterial(Primitive.showNormalsWireframeMaterial);
// meshGeometry.setMaterial(Primitive.showNormalsMaterial);
meshGeometry.setMaterial(Primitive.simpleLightMaterial);
// meshGeometry.setMaterial(Primitive.simpleLightWireframeMaterial);
attachChild(meshGeometry);
meshGeometry.setShadowMode(ShadowMode.CastAndReceive);
// Restore rotation
getParent().setLocalRotation(q1);
getParent().getParent().setLocalRotation(q2);
// Hide all frames.
for (Primitive a : primitives) {
a.setCullHint(CullHint.Always);
}
}
}