Rectangular clipping for Blendend.Canvas.

All functions modify the canvas' current clip region. The clip is part of the drawing state and can be saved/restored with Blendend.Canvas.save_state/1 and Blendend.Canvas.restore_state/1.

Example

use Blendend.Draw
alias Blendend.{Canvas, Canvas.Clip, Style.Color}

draw 240, 160, "clipped.png" do
  canvas = Blendend.Draw.get_canvas()

  Canvas.save_state!(canvas)
  Clip.to_rect!(canvas, 40, 30, 160, 100)

  clear color: rgb(235, 235, 235)
  rect 0, 0, 240, 160, fill: rgb(255, 120, 120)

  Canvas.restore_state!(canvas)
  rect 30, 20, 180, 120, stroke: Color.rgb!(40, 40, 40)
end

The red fill is clipped to the 160×100 window, while the stroked outline is drawn after restoring the clip.