Material Function for Diffuse control curve
For a while I have tested some ideas for adjusting the Diffuse color curve in the material. I have found the results I want, and I will give you an overview of the process and the results. It was designed so that the following conditions were always satisfied. - Do not use sqrt, if, or trigonometric functions. - Pure Black should be kept at 0,0,0. - Linear from black to white. - It should be possible to control with only one parameter in Material Instance. - Must be adjustable to a normalized (-1 to 1) value. Step 1. Find Equation There are websites that draw graphs of equations. Using them will be very helpful for development. We will get the value (y-axis) to multiply according to the brightness (x-axis) of the color. The red line is the ideal circular curve. The blue line is a simplified version of the red line without Sqrt(). We choose this. Step 2. Material Function Create a new material Function. The final content is simple. Step 3. Validat