static void outpoly() {
int i;
int vab,vca;
#ifdef DBG
printf(" outpoly, npoly = %d \n", npoly);
#endif
/* check to make sure poly faces away from origin: if not, flip it */
check_facing();
if (subdiv_sides) {
DPoint midp;
int nxti = 0;
for (i=npoly-1; i>=0; i--) {
pol[2*i] = pol[i];
MidPoint(&midp,&verts[pol[i]],&verts[pol[nxti]]);
pol[2*i+1] = reg_vert(&midp);
nxti = 2*i;
}
npoly *= 2;
}
if (center_verts||star_axis[curax]||state.scale_axis[curax]!=1.0) {
DPoint sum;
int nc,nxt;
sum.x = sum.y = sum.z = 0.0;
for (i=0; i<npoly; i++) {
sum.x += verts[pol[i]].x;
sum.y += verts[pol[i]].y;
sum.z += verts[pol[i]].z;
}
sum.x /= (float)npoly;
sum.y /= (float)npoly;
sum.z /= (float)npoly;
if (state.scale_axis[curax]!=1.0) {
ScaleVect(&sum,state.scale_axis[curax]);
nc = reg_vert(&sum);
for (i=0; i<npoly; i++) {
nxt = (i==npoly-1)?0:i+1;
outface(nc,pol[i],pol[nxt],1,1,1);
}
}
else {
nc = reg_vert(&sum);
for (i=0; i<npoly; i++) {
nxt = (i==npoly-1)?0:i+1;
outface(nc,pol[i],pol[nxt],0,1,0);
}
}
}
else {
for (i=1; i<npoly-1; i++) {
vab = vca = 0;
if (i==1) vab = 1;
if (i==npoly-2) vca = 1;
#ifdef DBG2
printf(" face (%d,%d,%d) vis = (%d %d %d) \n",
pol[0],pol[i],pol[i+1],vab,1,vca);
#endif
outface(pol[0],pol[i],pol[i+1],vab,1,vca);
#ifdef DBG2
{
double l = dist(pol[i],pol[i+1]);
printf(" side length = %.6f \n",l);
}
#endif
}
}
}
void check_facing_at(enum Orientation o, int x, int y) {
check_facing(o);
check_at(x, y);
}
