Houdini 20.5 Nodes Geometry nodes

HeightField Clip geometry node

Limits height values to a certain minimum and/or maximum.

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Since 16.0

Mask layers

This node adds two mask layers to the output. The mesa layer marks areas where the node leveled the terrain. The cliffs layer marks the borders of the clipped regions. You can use these masks in subsequent layers to apply different effects to just the areas that were clipped (or not clipped).

Parameters

Clipping

Compute Range

Click to set the minimum and maximum to the current minimum and maximum values of the input volume.

Min Clip

Turn on the checkbox to clip height values below this minimum.

Max Clip

Turn on the checkbox to clip height values above this maximum.

Soft Clip Strength

Turn on the checkbox to define the sharpness of the transition from the clipped value to the rest of the volume.

Soft Clip Scale

The unit-height to use in computing soft clipping. Because soft clipping is designed around unit range, to get very soft clips of height fields this scale needs to be increased.

Edge Mask Radius

Width of the area marked in the edge mask (cliffs).

Generate Mask from

Choose, which layer you want to use to create the mask layer.

Clipped Layer

Takes the information from the mesa layer to generate the mask.

Edge Layer

Takes the information from the cliff layer to generate the mask layer. You can change the width of the edges with Edge Mask Radius.

Layer Bindings

Height Layer

The name of the height volume to operate on, usually height.

Mask Layer

If a mask volume is wired into this node’s second input, this specifies which volume in the second input to use to mask this node’s effect, usually mask. Click the “Add mask paint” button to paint the mask directly in the viewport (this automatically adds a paint node to the second input).

Output Clipped Layer

If this is not empty, adds a mask to the output geometry named this (usually mesa) that marks where the height field was clipped. You can use this mask to apply effects to areas that were or weren’t clipped.

Output Edge Layer

The node adds a mask to the output geometry named this (usually cliffs) that marks the voxel borders around where heights were clipped. You can use this mask to apply effects to areas around the clipping.

Geometry nodes