World Inverse Matrix[0] in may4?

[nicla]

Hello

I'm doing this new tutorial by "The-Real-Mrhell" (Layered Texture Tutorial) which was added not so long here. He is using maya 3 and he explains. (btw thanks for the tut, looks interesting

In the HyperGraph select the "placeFlames3D" and middle-mouse drag it onto your "proj_Flames_A" node, this will bring up the connections editor. first select World Inverse Matrix[0] then Placement Matrix.

In the connection editor world inver matrix doesn't appear (in maya 4 that is). Anyone knows what it has been change on to?

[pixho]

Hi,

The attribute worldInverseMatrix is used by any 3d texture to get its 3d placement (i.e. xyz coordinates).
This attr. exists since maya v1.0, and you can find it if you display the hidden or readable inputs of te texture in the connection editor.

Don't pay attention of the [0], it's just because the worldInverseMatrix he used was already connected to another to a placement matrix of a 3d texture.

Hope this helps...

Emmanuel

Emmanuel Campin
Lighting & shading TD
www.pixho.com

[nicla]

Humm ok. I'l give it another try...thanks pixho (btw love your stuff too

[dgould]

Don't pay attention of the [0], it's just because the worldInverseMatrix he used was already connected to another to a placement matrix of a 3d texture. <<

The index [0] is very important. It is not because it was already connected that it has index 0. This index is the instance number of the DagPath for this given shape. If you have multiple instances of a shape the index will be different. It is important to keep this in mind since you may connect the wrong instance and therefore it won't work correctly.

[ D A V I D G O U L D ]
email: davidgould@davidgould.com
web: www.davidgould.com

[pixho]

Thanks David for this.
I didn't know that

Emmanuel

Emmanuel Campin
Lighting & shading TD
www.pixho.com