gamnit: `UICamera::camera_to_ui` returns a 3D point

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/gamnit/cameras.nit b/lib/gamnit/cameras.nit
index 688082b..c83ace3 100644 (file)
--- a/lib/gamnit/cameras.nit
+++ b/lib/gamnit/cameras.nit
@@ -225,14 +225,14 @@ class UICamera
        end
 
        # Convert the position `x, y` on screen, to UI coordinates
-       fun camera_to_ui(x, y: Numeric): Point[Float]
+       fun camera_to_ui(x, y: Numeric): Point3d[Float]
        do
                # FIXME this kind of method should use something like a canvas
                # instead of being hard coded on the display.
 
                var wx = x.to_f * width / display.width.to_f - position.x
                var wy = y.to_f * height / display.height.to_f - position.y
-               return new Point[Float](wx, -wy)
+               return new Point3d[Float](wx, -wy, 0.0)
        end
 
        # Center of the screen, from the point of view of the camera, at z = 0