modelViewProjectionMatrix

[Thomas.]

Object3D.getID() ... Object3D has still same ID or it can be reset?

[EgonOlsen]

The ids will be assigned by the engine, but you can set/reset the counter. However...why would you want to?

[Thomas.]

I want to store MVM and IRenderHook in HashMap, render and return all original IRenderHook...

edit: and original shader...

[EgonOlsen]

Ok, but why do you want to reset the id for that?

[Thomas.]

I don't want to reset IDs, I thought, that jPCT can reset them in some cases...

[EgonOlsen]

I misunderstood you there...no, jPCT doesn't reset the id by itself.

[Thomas.]

Ok and IDs are also unique between worlds or not?

[EgonOlsen]

Yes

[Thomas.]

Thanks

[Thomas.]

Could you add method for get RenderHook from Object3D?

[EgonOlsen]

I've added that method. Please download the latest beta jar.

[Thomas.]

I've added that method. Please download the latest beta jar.

Thanks I can set uniforms per object, now.

I've added support for a new uniform called "projectionMatrix" to the beta jar. The model view matrix can be calculated like this (unoptimized):

Code Select Expand


Matrix mc=new Matrix();
Matrix mv=obj.getWorldTransformation();
mc.setTo(world.getCamera().getBack());
SimpleVector v=world.getCamera().getPosition();
v.scalarMul(-1);
mc.translate(v);
mv.matMul(mc);


In these calculations is small bug. If someone will need it, here is fixed code.

Code Select Expand

private Matrix calcModelViewMatrix(World world, Object3D object) {
Camera cam = world.getCamera();
Matrix mc = new Matrix();
Matrix modelView = object.getWorldTransformation();
Matrix backMatrix = cam.getBack();
mc.setTo(backMatrix);
SimpleVector v = cam.getPosition();
v.scalarMul(-1);
modelView.translate(v);
modelView.matMul(mc);
return modelView;
}