How to draw custom canvas shape with Vue?

To create a custom shape with vue-konva, we should use v-shape component.

When creating a custom shape, we need to define a drawing function that is passed a Konva.Canvas renderer.

We can use the renderer to access the HTML5 Canvas context, and to use special methods like context.fillStrokeShape(shape) which automatically handles filling, stroking, and applying shadows.

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