iOS PencilKit Draw shapes programmatically

Question

I'm trying to figure out how to modify the PKDrawing property from PKCanvasView to add some shapes like circles or at least add a line however PKDrawing is an opaque type so there is not too much to do.

Is there any workaround to create shapes or lines on a PKCanvasView ?

Answer 1

If you're looking to create the drawing 100% programmatically, from raw CGPoints, instead of from a predefined asset like in Apple's examples, see https://stackoverflow.com/a/70274331/4075379

Answer 2

You can now

yourPKCanvasView.drawing = PKDrawing(strokes: yourPKStrokes)

Full example: https://developer.apple.com/documentation/pencilkit/inspecting_modifying_and_constructing_pencilkit_drawings