Point Density Node

../../../../../_images/render_cycles_nodes_types_textures_point-density_node.png

Point Density Node.

The Point Density node is used to add volumetric points for each particle or vertex of another object.

Inputs

Vector
Texture coordinate to sample texture at; defaults to global position (Position output of Geometry node) if the socket is left unconnected.

Properties

Point Data

Where to get points from.

Particle System
Use each particle position from the specified particle system.
Object Vertices
Use each vertex position from the specified object.
Object
Which object’s vertices or particle system will be used.
Particle System
Particle positions from this system will be used.
Space

The coordinate system for mapping points.

World Space
Map each point exactly where the source particle/vertex is.
Object Space
Fit the points from the source particles/vertices inside the bounding box of the object with the point density texture.
Radius
Size of the points.
Interpolation

Texel filtering type.

Closest
No interpolation, use nearest texel. Produces blocky looking points.
Linear
Interpolate linearly between texels, producing soft, round points.
Cubic
Use cubic falloff, producing very soft points. Useful when points are very densely packed.
Resolution
The dimensions of the texture holding the point data.
Color Source

Which attribute of the particle system or mesh is used to color the output.

Particle Color Sources
Particle Age
Lifetime mapped as (0.0 - 1.0) intensity.
Particle Speed
Particle speed (absolute magnitude of velocity) mapped as (0.0 - 1.0) intensity.
Particle Velocity
XYZ velocity mapped to RGB colors.
Vertex Color Sources
Vertex Color

Use a vertex color layer for coloring the point density texture.

Note

Vertex colors are defined per face corner. A single vertex can have as many different colors as faces it is part of. The actual color of the point density texture is averaged from all vertex corners.

Vertex Weight
Use weights from a vertex group as intensity values.
Vertex Normals
Use object-space vertex normals as RGB values.

Outputs

Color
Texture color output.
Density
Density of volume.

Examples

../../../../../_images/render_cycles_nodes_types_textures_point-density_example.jpg

Domain object with Point Density texture using vertices from ball as points.