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Marker rotation

We had Calculated the angle by using this code for the marker line to be drawn

let angle = Math.atan2( nextdata.y - y, nextdata.x - x ) * ( 180 / Math.PI )

            let xOffset = 2;

            let yOffset = 0;

            ctx.fillText("", x - (xOffset), y - (yOffset));

            ctx.strokeStyle = "rgb(161, 167, 179)";

            ctx.fillStyle = "white";


            ctx.lineTo(x, y);

            //todo_updated point

            ctx.lineTo(x + 8, y);




based on the angle how to rotate the drawn line ?

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