154
edits
Changes
→This Week
***:: Atten<sub>i</sub> = [0, 1]
***: Spot<sub>i</sub> - spot factor of light i
***::
***: L<sub>a</sub><sub>i</sub> - ambient color of light i
***: L<sub>d</sub><sub>i</sub> - diffuse color of light i
***: N - normal to the surface at the vertex
*** Blinn-Phong - use halfway vector instead of reflection vector - adjust power to compensate
***: Specular reflectance = (N.H<supsub>.i</supsub>H)<sup>p'<sub>i</sub></sup>
***: H<sub>i</sub> - halfway vector
***:: H<sub>i</sub> = norm(norm(Camera<sub>position</sub> - Vertex<sub>position</sub>) + L<sub>dir<sub>i</sub></sub>)
***: p'<sub>i</sub> - adjusted specular power of light i
*** Phong - account accurately for position of viewer
***: Specular reflectance = (R<supsub>.i</supsub>.V)<sup>p<sub>i</sub></sup>
***: R<sub>i</sub> - reflection vector
***:: R<sub>i</sub> = 2 * (N . L<sub>dir<sub>i</sub></sub>) N - L<sub>dir<sub>i</sub></sub>
***: V<sub>i</sub> - viewpoint vector
***: p<sub>i</sub> - true specular power of light i
***:
