area vex function

Contexts: cop , displace , fog , light , photon , shadow , surface

Tags: shading

Computes the shading area of the variable.

1. float area(vector )

Computes the shading area of the variable. This is typically used to get a representation of the area being shaded in terms of pixels.

You can specify optional parameters to control the computation.

Computes the area of the current pixel, which will not be 1 if the UV coordinates are transformed. The optional parameter “extrapolate” controls whether to do derivative extrapolation at the edges.