Houdini 22.0 Nodes Copernicus nodes

Pyro Collision Shape Copernicus node

Creates points representing implicit surfaces to add collision objects into a Pyro simulation.

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Since 22.0

Note

Although COP Pyro is in COPs, you need DOP level permissions to use it. This means that COP Pyro is not available in Houdini Core, but only in Houdini FX, Houdini Apprentice, Houdini Indie, and Houdini Education.

This node is useful for creating basic collision primitives for a pyro simulation. Optionally, you can provide a more complex implicit surface to this node’s implicitsurface input to be used as collision.

Connect the output of this node to the collision_points input of the Pyro Block node. To use multiple collisions, merge the outputs from multiple instances using a Point Merge.

Parameters

Activation

Turns the effect of this node on and off. This node is only active when this value is 1.

Shape

Shape

Controls what sort of shape to create.

Size

Controls the size of the box. Click the Per Component button for separate scale along each axis.

Size Scale

Controls the size of the box separately across each axis.

Roundness

Radius used to round the box edges. A value of 0 creates a sharp box.

Radius

Controls the size of the sphere. Click the Per Component button for separate scale along each axis.

Radius Scale

Controls the radius of the sphere separately across each axis.

Cut Sphere

When tunred on, cuts the sphere with a plane at the Y position specified by this parameter.

Radius

Major radius and tube radius of the torus.

Link Length

Stretches the torus into a chain link shape. A value of 0 creates a regular torus.

Length

Length of the tube along its local axis.

Radius

Radii at the two ends of the tube. Matching values create a straight tube; different values create a tapered tube.

Radius Scale

Uniform scale applied to the tube radii.

Round Caps

Rounds the tube ends.

Transform

Translate

Controls the translation along the X, Y, and Z axes.

Rotate

Controls the rotation about the X, Y, and Z axes.

Uniform Scale

Controls the uniform scale of the shape.

Collision

Collision Velocity

When turned on, calculates the velocity of the implicit surface from its motion using the Velocity Approximation parameter. This is useful for moving or rotating sources.

Velocity Scale

Scales the strength of the velocity calculated from the motion.

Inputs

implicitsurface

An implicit surface geometry built using the SOP based implicit surface workflow.

Outputs

source_points

Points representing the implicit surface with pyro collision attributes.

See also

Copernicus nodes