The GradAngle defines the angle of the secondary color shading when the type of Fill is set to Linear Gradient and Pipe Gradient. The GradAngle value for an object with pipe shading defines the angle of the pipe shading. The default measurements are:
- 0 = Horizontal
- 90 = Vertical
- 45 = Top-right corner
- 135 = Top-left corner
- 225 = Bottom-left corner
- 315 = Bottom-right corner
- 180 = Left-Right flange
- -180 = Right-Left flange
- 270 = Bottom-Top flange
- -270 = Top-Bottom flange
It is unusual for the GradAngle to be animated, as the angle of the gradient shading is not usually changed after it has been defined on the Polyline Properties window or Text Properties window. However, if you wanted to animate the GradAngle, the expression for the GradAngle would need to result in a value between 0 and 360 (the value corresponds to degrees).