Math Ops

The Math Ops tool lets you apply mathematical blending operations to the RGBA values of two source images.

Use the following procedure to apply mathematical blending operations.

To apply mathematical blending operations to an image:

1. Drag the Math Ops tool from the Tools tab to the dependency graph in the Schematic view.
2. Connect a source image to input A and another source image into input B of the Math Ops node.
3. Click the Operator button and select a math operator.

   Select:	To:
   Add	Add to the RGBA of input A, a percentage (using the Blend value) of the RGBA of input B.
   Div	Divide the RGBA values of input A by the RGBA values of input B.
   Max	Create a composite image where the final output will be the maximum RGBA values of either input A or input B.
   Min	Create a composite image where the final output will be the minimum RGBA values of either input A or input B.
   Mix	Mix the RGBA values of input A with the RGBA values of input B: 0% = completely A, 100% = completely B.
   Mult	Multiply the RGBA values of input A by the RGBA values of input B.
   Screen	Mimic the effect of combining two film negatives together. Both layers are inverted, then multiplied, and finally the results are inverted back.
   Sub	Subtract from the RGBA of input A a percentage (using the Blend value) of the RGBA of input B.

4. Blend the images. The blend factor controls the blend between the result of the math operation and the original input.