public void transform(Matrix4f mat, boolean updateLocal) {
activate();
Transform t = new Transform();
t.set(mat);
Vector3f v = new Vector3f();
for (int i = 0; i < 3; ++i) {
t.basis.getColumn(i, v);
v.normalize();
t.basis.setColumn(i, v);
}
body.setWorldTransform(t);
// required for static objects:
body.getMotionState().setWorldTransform(t);
if (body.isInWorld() && body.isStaticOrKinematicObject()) {
scene.world.updateSingleAabb(body);
for (GameObject g : touchingObjects) g.activate();
}
//
updateChildTransforms();
if (parent != null && updateLocal) {
updateLocalTransform();
}
}
public void scale(float x, float y, float z, boolean updateLocal) {
activate();
// Set unit scale
Matrix4 t = modelInstance.transform;
Matrix4 mat_scale = new Matrix4();
Vector3 s = new Vector3();
t.getScale(s);
mat_scale.scl(1 / s.x, 1 / s.y, 1 / s.z);
t.mul(mat_scale);
// Set target scale
mat_scale.idt();
mat_scale.scl(x, y, z);
t.mul(mat_scale);
// Relevant bullet body update
CollisionShape cs = body.getCollisionShape();
cs.setLocalScaling(new Vector3f(x, y, z));
if (body.isInWorld() && body.isStaticOrKinematicObject()) scene.world.updateSingleAabb(body);
// Child propagation
Vector3f ps = scale();
Matrix4f pt = transform();
Matrix4f ct = new Matrix4f();
Matrix4f ms = new Matrix4f();
ms.setIdentity();
ms.m00 = ps.x;
ms.m11 = ps.y;
ms.m22 = ps.z;
pt.mul(ms);
for (GameObject c : children) {
c.scale(scale().mul(c.localScale), false);
ct.mul(pt, c.localTransform);
c.transform(ct, false);
}
if (parent != null && updateLocal) {
updateLocalScale();
}
}