Sketchup shadow rules
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does anyone know what the technique is called that sketchup uses to control the 3d shading look when the sun is turned off? what are the rules for this? what I am talking about is that when you look at a face straight on, it will be much lighter than looking at it from a very shallow angle. I would like to know more of the details about how this works.
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I don't know the right answer, but I suspect it's whatever OpenGL uses as a default lighting. I think that it is "Phong" lighting. I know there are lots of equations out there for Phong. Sorry if that's no help.
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I dont know a lot about how SU renders objects, although im fairly sure it uses Gouraud shading for smoothed objects.
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My mistake. Gouraud is the default shading for OpenGL, not Phong. -
thanks for response guys. I assume when you check "use sun for shading" it is just using the sun position to calculate the angle to the normals rather than the camera? same technique though?
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It looks like that's what's going on to me.
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