How to set transform origin in SVG

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To rotate use transform="rotate(deg, cx, cy)", where deg is the degree you want to rotate and (cx, cy) define the centre of rotation.

For scaling/resizing, you have to translate by (-cx, -cy), then scale and then translate back to (cx, cy). You can do this with a matrix transform:

transform="matrix(sx, 0, 0, sy, cx-sx*cx, cy-sy*cy)"

Where sx is the scaling factor in the x-axis, sy in the y-axis.

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