Houdini Digital Assets Collection

A shader similar to Unity's Fake Window. Outputs a simple color from the perspective camera.

Vop in MatNetwork	Pre-set: UV and Normal

• Depth: Maximum depth value when outputting inDepth.

• Outputs:

  outUV	id	outNor	inDepth

• Auto Align: Aligns the face to the X/Z plane before cutting. (Useful when using grid_cutter in a For-Each Primitive loop.)

• Force Cut Long Side: Cuts the longer side at each iteration.

• Half Ratio: How close each cut is to the halfway point.

  Half Ratio: 0.5	Half Ratio: 1

• Min Size: Limits the size of the smallest piece.

Fractures based on polyline projection (X/Z plane).

Input 1: polyline.
Input 2: Ground plane (does not need to be flat)
Output: Fractured polygons with attributes.

Close Line	Open Line

• Iterations: Increase to better match the input line. (May not be a perfect match.)
• Iteration Threshold: Avoids extremely small pieces.

Export Maya nParticle cache directly from Houdini.

REQUIREMENT:

1. Unique id attribute.
2. Source code: nCache.py

Attribute Mapping:

v@v -> velocity
f@age -> age
f@life -> lifespanPP
f@pscale -> radiusPP
v@Cd -> rgbPP
f@Alpha -> opacityPP
v@rotation -> rotationPP

• Start Frame
• End Frame
• Evaluation Rate
• XML: xml file path to be written.
• Particle Name: Name of the particle shape in Maya.
• Python Module Path: File path to nCache.py.

Export Maya geometry point cache directly from Houdini. (Multiple objects are supported.)

REQUIREMENT:

1. Primitive attribute: path
2. Source code: nCache.py

The path attribute defines the target in Maya. The recommended workflow is to use an Alembic file exported from Maya, preserving the path attribute for exporting back.

• XML: Path to the XML file to be written.
• Start Frame
• End Frame
• Python Module Path: File path to nCache.py.

Entagma - VEX in Houdini: Mandelbrot and Mandelbulb

Zeus VFX - 3D Fractal in Houdini Tutorial

Reuse the volume texture exported from Labs Volume Texture Export in Houdini.

• Volume Texture: Texture filepath.
• BB_pos: Bounding box position.
• U_Tile
• V_Tile
• outClr: RGB color from the volume texture.

Create collections based on the material binding name of the source agent mesh.

• Collection: collection prim path
• From Path
• Replace Path