Extension Pack for MARI

• Where to find it:

• Add Procedural Layer / Geometry / Extension Pack /

• NodeGraph / Right Mouse Click / Add Nodes / Geometry / Extension Pack /

The Object Center node outputs the current Object Center as a uniform RGB Value across the Object.

The Node can for example be used to transform an Axis Projection that previously was mistakenly aligned with "Alignment Center",

then changed to World Alignment, back to the centered Coordinates.

In the below image the Object Center was viewed, then - with the Colorspace set to Scalar Mode - the Color was sampled.

The R, G and B values returned correspond to the X, Y and Z coordinates of the Object Center.

The "Object Center" Node can for example be used to negate Calculations that were performed in "Object Center" Mode.

One example is the Axis Projection Node which at default settings will create its Projection based around your current Objects Center.

Object Center Mode means that if you load in another Object, your Projection might shift slightly. 

The Alignment Setting in the Axis Projection determines the initial 
Projection Base Alignment

If you found yourself having mistakenly authored an Axis Projection in "Centre" Mode insted of "World" Mode you can use the new Object Center Node to rectify this.

1. Create a "Object Center" Node
2. Inside its Node Properties tick on "Invert Position"
3. Plug the Output of the Object Center Node into the 3D Offset Port of a "Manifold 3D" Node
4. Plug the Output of the Manifold 3D Node into the Manifold Port of the Axis Projection Node

5. Inside the "Transform" Tab of the Axis Projection Node, go to the "Absolute UV Offsets" Group
6. Enter "-0.5" in all value fields.
   
   

7. Since the Object Center Node is still live, it is best to "flatten" it with a Bake Point after.Set the Bake Point to "Raw" and 32 bit.