Surface Design by "texture"

About the syntax of the "texture" components:

The statement: "pigment { ... }"

This statement defines the color properties and the transparency of the surface of a shape. This meight be done by following:

1) by a predefined color pigment{ color Red }
2) by a rgb< , ,  > - defined color pigment{ color rgb<1,0.8,0,>}
3) by a rgbt< , ,  ,  > - transparent color pigment{ color rgbt<1,1,1,0.8>}
4) by a color pattern pigment{ Candy_Cane }	.

Color patterns also can be scaled, rotated and translated inside the "pigment" statement without effects to the geometic properties of the shape.
In this statement also a "quick_color" can be defined i.e. by

pigment{quick_color Yellow}