:DESCRIPTION:
Gooch shader is based on the research paper "A Non-Photorealistic Lighting Model For Automatic Technical Illustration" . The shader is based on traditional technical illustration, rather than photo-realistic shading. It renders an object with a hue and value shift rather than traditional shading models do. Where as this shader uses luminance and changes in hue to show surface orientation. The Gooch shader allows for the shading to be in the mid-tones so lines and highlights are still visible. User can control the cool and warm colors occurring in the shading, also the threshold of the shader.
Gooch shader is based on the research paper "A Non-Photorealistic Lighting Model For Automatic Technical Illustration" . The shader is based on traditional technical illustration, rather than photo-realistic shading. It renders an object with a hue and value shift rather than traditional shading models do. Where as this shader uses luminance and changes in hue to show surface orientation. The Gooch shader allows for the shading to be in the mid-tones so lines and highlights are still visible. User can control the cool and warm colors occurring in the shading, also the threshold of the shader.
