void FF_ID(fc6_f, FC6_F)(int *a, int *b, int *c, int *d)
{int _la;
int *_lb;
int *_lc;
int *_ld;
_la = (int) *a;
_lb = (int *) b;
_lc = (int *) c;
_ld = (int *) d;
fc6(_la, _lb, _lc, _ld);
return;}
void renderPolygons(void) {
// set clearing color
glClearColor(0.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
// first polygon - triangle - yellow
Point c1(100,50,0);
Color fc1(1.0, 1.0, 0.0, 0.0);
Polygon tri(40, c1, 3, 1, GL_LINE_LOOP, fc1);
tri.draw();
// square - hollow - light blue(cyan)
Point c2(100,150,0);
Color fc2(0.0, 1.0, 1.0, 0.0);
Polygon squ(40, c2, 4, 8, GL_LINE_LOOP, fc2);
squ.draw();
// pentagon - hollow - gray
Point c3(100,250,0);
Color fc3(0.5, 0.5, 0.5, 0.0);
Polygon pent(40, c3, 5, 3, GL_LINE_LOOP, fc3);
pent.draw();
//hexagon - not hollow - red
Point c4(200,50,0);
Color fc4(1.0, 0.0, 0.0, 0.0);
Polygon hex(40, c4, 6, 3, GL_POLYGON, fc4);
hex.draw();
// nonagon - hollow - green
Point c5(200,150,0);
Color fc5(0.0, 1.0, 0.0, 0.0);
Polygon nin(40, c5, 9, 5, GL_LINE_LOOP, fc5);
nin.draw();
// tridecagon - hollow - purple
Point c6(300,300,0);
Color fc6(1.0, 0.0, 1.0, 0.0);
Polygon thri(90, c6, 13, 3, GL_LINE_LOOP, fc6);
thri.draw();
glutSwapBuffers();
}