Chaos Texture-凌乱纹理

Chaos Texture

The OctaneRender® Chaos Texture node randomly scatters an input texture over a surface or UV space, as shown in the image below. This is a great way to hide seams of image textures not intended for seamless use. Some patterns will hide better than others, of course.

There are a variety of controls in the Chaos Texture node for blends and coverage, as the settings show in the illustration below:

TEXTURE

This is the slot where textures are assigned. Procedural textures produce some interesting results.

RESOLUTION GROUP

Specifies the X and Y resolution of the actual Chaos texture created by the node.

TILE SCALE

The size of the image as it is tiled across the surface or UV space.

COVERAGE

This control moves the image on U and V within the tile space. Use the Show Tile Structure toggle to see how the images are actually applied.

BLENDING EXPONENT

This controls the blend between the repeated textures. Starts with a value of 1.0 (very soft blend); higher values produce a sharper blend.

SHOW TILE STRUCTURE

Toggle this control to see the structure of how the chaos pattern flows. This will show the actual triangles of the mesh, with some triangles containing portions of the image and others being black.

HISTOGRAM INVARIANT BLEND

This toggle will make the output texture’s histogram closer to the one of the inputs. This option is only compatible with LDR images.

UVW TRANSFORM

This button will add a UVW Transform node to the Transform pin of the Chaos Texture node. This transform node will transform the entire UV space as a whole.

ENABLE ROTATION

This will toggle the rotation of the tiles according to the following inputs.

ROTATION SEED

This will set the Seed value for the random rotations.

MAX ROTATION

This option will limit the maximum rotation to the specified value.