Image#

Bridges between ComfyUI images and the plugin.

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Contents#

Heightfield from Image (PCG) — Builds a displaced grid whose height comes from the brightness of an image.

Nodes#

Heightfield from Image (PCG)#

PCG_HeightfieldFromImage · category PCG/image

Builds a displaced grid whose height comes from the brightness of an image.

Heightfield from Image (PCG): input and result

Bridges image generation and geometry: the height map can come from any ComfyUI sampler. The image is sampled bilinearly at resolution x resolution grid points, brightness is the average of the RGB channels, and the point's Y is that brightness times Height. The grid lies in the XZ plane. Point normals are computed, and the raw brightness is stored in the point attribute height. Only the first image of a batch is used.

Inputs

Input	Type	Description
`image`	IMAGE	Height map; brightness is the mean of RGB.

Outputs

Output	Type	Description
`geo`	GEOMETRY	Displaced grid with normals and a `height` point attribute.

Parameters

Parameter	Type	Default	Description
Size `size_x` `size_z`	float [0.001..]	100, 100	Size of the grid along X and Z in world units.
Height Scale `height`	float	20	Multiplier applied to the brightness (0..1) to get the displacement along Y. Negative values invert.
Grid Resolution `resolution`	int [2..2049]	129	Number of points along each side of the grid.