The number of distance units in a single grid space.
The factor to convert distance units to pixels.
The height of the canvas.
The length of the longest line that can be drawn on the canvas.
The aspect ratio of the scene rectangle.
The canvas rectangle.
The number of grid rows on the canvas.
The height of the scene.
The scene rectangle.
The width of the scene.
The X coordinate of the scene rectangle within the larger canvas.
The Y coordinate of the scene rectangle within the larger canvas.
The grid size.
The units of distance.
The width of the canvas.
The number of grid columns on the canvas.