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 ?

I have been searching high and low for an answer to this. From what I can tell you cannot programmatically modify the data in a PKDrawing object — Nathan Stowell, Apr 06 '20 at 05:55

score 2 · Answer 1 · answered Jan 08 '21 at 20:44

2

You can now

yourPKCanvasView.drawing = PKDrawing(strokes: yourPKStrokes)

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

answered Jan 08 '21 at 20:44

Sam

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5

score 1 · Answer 2 · answered Dec 08 '21 at 11:55

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

answered Dec 08 '21 at 11:55

Roger Oba

1,292
14
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iOS PencilKit Draw shapes programmatically

2 Answers2