Lighting Effects of 3D Modeling
Placing a negative omni behind the teapot the effect look like a shadow. When the multiplier is negative, the color will be effected as well. For example, a green colored light will appear inverse (become dark red) when the multiplier parameter is negative and white colored light will become black after we change its parameter to be negative. 5.2. Playing with shadow density Now we are playing with positve shadow density. The postitive density (more than 1) causes the shadow color to be come brighter (with the exception of a black color shadow, the positive density will make the shadow appears darker).