// static
Box3f Box3f::united( const Box3f& b0, const Box3f& b1 )
{
Vector3f unitedMin = libcgt::core::math::minimum(
b0.leftBottomBack(), b1.leftBottomBack() );
Vector3f unitedMax = libcgt::core::math::maximum(
b0.rightTopFront(), b1.rightTopFront() );
return{ unitedMin, unitedMax - unitedMin };
}
// static
bool Box3f::intersect( const Box3f& b0, const Box3f& b1, Box3f& intersection )
{
Vector3f minimum = libcgt::core::math::maximum(
b0.leftBottomBack(), b1.leftBottomBack() );
Vector3f maximum = libcgt::core::math::minimum(
b0.rightTopFront(), b1.rightTopFront() );
if( minimum.x < maximum.x &&
minimum.y < maximum.y &&
minimum.z < maximum.z )
{
intersection.origin = minimum;
intersection.size = maximum - minimum;
return true;
}
return false;
}