ColorConversionInigoQuilez creates a new color conversion using [Inigo Quilez]'s style.

ColorConversionLinearGradient creates a color conversion function that creates a gradient centered along d=0 that extends gradientLength.

RenderPNGFile renders a 2D SDF as an image and saves result to a PNG file with said filename.

RenderShader3D is an auxiliary function to aid users in getting setup in using gsdf quickly.