This operator returns 1 if the shader is being evaluated for shadow rays. It returns 0 if the shader is being evaluated for pixel color.
The following examples include this node.
This example demonstrates the use of the Flip Solver and the Fluid Force DOP. The Fluid Force DOP is used to apply a drag force on a wire object according to the motions of a flip fluid. The drag force is only applied at locations where fluid exists in the fluid object.
This example demonstrates how to diffuse the density of a smoke simulation using the Gas Diffuse DOP.