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RiColor(color)
RiColor() replaces the current surface color in the graphics environment with
the new color color. The current color is an atribute of the graphics
environment, saved and restored like any other. color is of type RtColor
which is an array of three floating points for r, g and b
respectively.
RtColor green = {0.0, 1.0, 0.0};
RiColor(green);
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glColor*(r, g, b)
glColor*() sets the current red, green, blue and alpha values. This command can
have three suffixes. The first suffix is either a 3 or 4, to indicate whether
you supply an alpha value. The second suffixes indicates the data type for r, g and b. The third suffix is an optional v, which indicates that the
argumentis a pointer to an array of values of the given data type.
GLfloat green[3] = {0.0, 1.0, 0.0};
glColor3fv(green);
glColor3f(1.0, 0.0, 0.5);
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