Overview

An SPQuad represents a rectangle with a uniform color or a color gradient.

You can set one color per vertex. The colors will smoothly fade into each other over the area of the quad. To display a simple linear color gradient, assign one color to vertices 0 and 1 and another color to vertices 2 and 3.

The indices of the vertices are arranged like this:

0 - 1
| / |
2 - 3

Colors

Colors in Sparrow are defined as unsigned integers, that’s exactly 8 bit per color. The easiest way to define a color is by writing it as a hexadecimal number. A color has the following structure:

0xRRGGBB

That means that you can create the base colors like this:

0xFF0000 -> red
0x00FF00 -> green
0x0000FF -> blue

Other simple colors:

0x000000 or 0x0 -> black
0xFFFFFF        -> white
0x808080        -> 50% gray

If you’re not comfortable with that, there is also a utility macro available that takes the values for R, G and B separately:

uint red = SP_COLOR(255, 0, 0)