Box3f Quad::bounds() const
{
Box3f result;
result.grow(_base);
result.grow(_base + _edge0);
result.grow(_base + _edge1);
result.grow(_base + _edge0 + _edge1);
return result;
}
Box3f Cube::bounds() const
{
Box3f box;
for (int i = 0; i < 8; ++i) {
box.grow(_pos + _rot*Vec3f(
(i & 1 ? _scale.x() : -_scale.x()),
(i & 2 ? _scale.y() : -_scale.y()),
(i & 4 ? _scale.z() : -_scale.z())
));
}
return box;
}