| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell98 |
SFML.Graphics.SFCoordSpace
Documentation
class SFCoordSpace a where Source
Methods
Arguments
| :: a | |
| -> Vec2i | Pixel to convert |
| -> Maybe View | The view to use for converting the point |
| -> IO Vec2f |
Convert a point to world coordinates
This function finds the 2D position that matches the given pixel of the coord space. In other words, it does the inverse of what the graphics card does, to find the initial position of a rendered pixel.
Initially, both coordinate systems (world units and target pixels) match perfectly. But if you define a custom view or resize your coord space, this assertion is not true anymore, ie. a point located at (10, 50) in your coord space may map to the point (150, 75) in your 2D world -- if the view is translated by (140, 25).
This version uses a custom view for calculations, see the other overload of the function if you want to use the current view of the render-texture.