PointPositionMask

A nice tool to select a chunk of pixels based on their XYZ coordinates from a point position pass. Great for making selections on 3D CG environments.
Requires a World Point/Point Position Pass.

Plug in your Point Position Pass into the PointPositionPass input and your Beauty Pass into the Image input although it is not necessary.

Supports both Z-up and Y-up CG environments.

Provides a 3D scene for the Mask Shape Visualization.

Version 2.0

-added Cube to shape options

-added Falloff option

-added Transform tab for alternate movement options

-added option to toggle 3D Scene on or off

-added ability to move the Mask Visualization via the transform controls in the 3D viewport

-cleaned up interior

-faster Matrix based calculations

Version 3.0

-fixed Z-Up to properly display when viewing the 3D scene

-added the option to output the RGB premultiplied by the mask

-fixed the selection shape not following the Center Point Parent

Version 3.1

-added the option to change the selected pixel color in the 3d scene

Beauty

Point Position Pass

3D Scene View

Mask in the Alpha Channel