02/06/2003
15-462 Graphics I
32
Bisection of Sides
•Draw if no further subdivision
requested
void subdivide(GLfloat v1[3], GLfloat v2[3],
GLfloat v3[3], int depth)
{ GLfloat v12[3], v23[3], v31[3]; int i;
if (depth
== 0) { drawTriangle(v1, v2, v3); }
for (i = 0;
i < 3; i++) {
v12[i] =
(v1[i]+v2[i])/2.0;
v23[i] =
(v2[i]+v3[i])/2.0;
v31[i] =
(v3[i]+v1[i])/2.0;
}
...