// -----------------------------------------------------------
// Compute the center of the side in u,v coordinates.
static void rotate_uv_points_on_side(const vsegptr_t segp, sidenum_fast_t sidenum, const array<fix, 4> &rotmat, const uvl &uvcenter)
{
side *sidep = &segp->sides[sidenum];
range_for (auto &v, sidep->uvls)
{
v = rotate_uv_point(rotmat, v, uvcenter);
}
}
// -----------------------------------------------------------
// Compute the center of the side in u,v coordinates.
void rotate_uv_points_on_side(segment *segp, int sidenum, fix *rotmat, uvl *uvcenter)
{
int v;
side *sidep = &segp->sides[sidenum];
uvl tuv;
for (v=0; v<4; v++) {
rotate_uv_point(&tuv, rotmat, &sidep->uvls[v], uvcenter);
sidep->uvls[v] = tuv;
}
}