Practical VEX Codes for Houdini: Tips and Techniques

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1. Animating Grayscale Color

This VEX code animates grayscale colors from black to white. You can control the speed and distribution of the animation with sliders. Use this code to create dynamic color effects where the grayscale value changes over time.

2. Color-Affected Velocity

This code modifies the velocity of particles based on their color. Adjust sliders to control how different colors impact particle speed. Ideal for creating effects where color influences motion.

3. Deleting Points by Velocity

With this VEX code, you can delete points with a velocity below a certain threshold. A control slider helps set the cutoff speed for deleting points, managing your point clouds efficiently.

4. Falloff Mask Based on Age

Generate a falloff mask that transitions from white to black based on the age of points. Use a ramp to control the transition, perfect for gradual fades and changes in your simulation.

5. Noise and Gravity on Polylines

Apply noise to polylines with an added gravity effect based on the curveu attribute. Control the amount of noise and gravity with sliders to adjust movement and appearance.

6. Advanced Attribute Transfer

Transfer attributes between geometries with detailed controls like radius, max count, and distance threshold. Includes a kernel function for smooth blending, useful for precise attribute management.

7. Scaling Points by Age

Adjust the scale (pscale) of points based on their age. Use a ramp to control how the scale changes from a minimum to maximum value over time, ideal for effects with dynamic size changes.

8. Moving Points to the Nearest Surface

Move points to the nearest position on a surface from a second input geometry. Includes a ramp to control how points approach the surface, allowing for controlled adjustments.

9. Noise and Gravity with Curve Control

Add noise and gravity to polylines with effects controlled by a ramp based on the curveu attribute. This code enables complex, dynamic changes on your curves.

10. Precise Attribute Transfer with Elendt Kernel

Transfer attributes using the Elendt model with controls for attributes, distance, radius, and blending. This advanced VEX code allows for detailed and accurate attribute transfers.

These VEX codes provide powerful tools for enhancing your Houdini projects with precise control and dynamic effects.
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