I've set 16 points in the array:

Center Point   XY(50, 50)
Point 1   XY(43, 0)
Point 2   XY(68, 2)
Point 3   XY(85, 10)
Point 4   XY(94, 23)
Point 5   XY(100, 36)
Point 6   XY(100, 64)
Point 7   XY(84, 88)
Point 8   XY(59, 100)
Point 9   XY(41, 100)
Point 10   XY(19, 94)
Point 11   XY(4, 75)
Point 12   XY(1, 50)
Point 13   XY(5, 27)
Point 14   XY(14, 10)
Point 1   XY(43, 0)

OpenGL will make a triangle on three points and paint it inside.
The [eng]GL_TRIANGLE_FUN mode will make triangles like this:
 
1st triangle: center point, Point 1, Point 2
 
2nd triangle: center point, Point 2, Point 3
 
3rd Triangle: center point, Point 3, Point 4
 
4th triangle: center point, Point 4, Point 5
 
5th triangle: center point, Point 5, Point 6

etc.