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Feature requests / Position Forward Up from Transform

« on: October 06, 2018, 10:51:34 pm »

I recently started using SFML and its transforms and I had to extend sf::Transform as it lacked some functionality that I needed.

This is an example of my code:

// some class
sf::Transform _transform;

sf::Vector2f Position2() const { return sf::Vector2f(_transform.getMatrix()[2], _transform.getMatrix()[6]); }
sf::Vector2f Scale2() const { return sf::Vector2f(_transform.getMatrix()[0], _transform.getMatrix()[5]); }
void Position2(sf::Vector2f value)
{
        sf::Transform tmp(_transform.getMatrix()[0], _transform.getMatrix()[1], value.x,
                _transform.getMatrix()[4], _transform.getMatrix()[5], value.y,
                _transform.getMatrix()[8], _transform.getMatrix()[9], _transform.getMatrix()[10]);
        _transform = tmp;
}
sf::Vector2f Right2() const { return sf::Vector2f(_transform.getMatrix()[0], _transform.getMatrix()[1]); }
sf::Vector2f Up2() const { return sf::Vector2f(_transform.getMatrix()[4], _transform.getMatrix()[5]); }
 

Could something like this be implemented into sf::Transform? For e.g. there is a method sf::Transform::translate() which translates based of current values but there is no functionality to set position directly.