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This operator looks up a single sample of RGB or RGBA color from a disk image. If the image does not have an alpha channel associated with it (e.g. a JPEG image) and the operator returns RGBA, the alpha component will be set to 1.
This VOP uses point sampling and does not perform filtering of the texture.
RGB or RGBA values.
Image file used for look-up.
Determines how the image is evaluated when the texture coordinates are outside the range 0 to 1. The options are:
repeat). The image map repeats outside the
range 0 to 1. Basically, the integer component
of the texture coordinate is ignored.
streak). Texture coordinates are clamped to
the 0 to 1 range.
decal). Coordinates outside the range 0 to 1
will evaluate to the border color rather than an image
Border color when Decal wrapping is used.
The following examples include this node.
This example simulates grass being pushed down by an RBD object. Fur Objects are used to represent the blades of grass and Wire Objects are used to simulate the motion. When a single Fur Object is used to represent the grass, neighbouring blades of grass will have similar motion. Additional objects with different stiffness values can be used to make the motion less uniform. When "Complex Mode" is enabled, two objects are used to represent the grass. The stiffness of each set of curves can be controlled by adjusting the "Angular Spring Constant" and "Linear Spring Constant" parameters on the corresponding Wire Objects.