OpenGL / GLU : Is there a built-in function for drawing circles? -

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i know there built-in functions drawing rectangles (glrecti() instance), , thought circle pretty basic usage.

is there such built-in function drawing circles? or should implement myself?

gludisk() can used so:

void gludisk(gluquadricobj *obj,              gldouble innerradius, gldouble outerradius,              glint slices, glint loops)

innerradius , outerradius control size of hole , disk.

set innerradius 0.0 render solid circle.
slices: number of sides disk (eg. 3 equilateral triangle, 6 washer 20 circle).
loops: number of concentric rings rendered eg. 1 circles 2 washers. using larger values loops improves specular lighting , effect of spotlights.

official manpage.


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