Draw a line at a specific angle in Java

January 1, 2024 by Tarik

Is this what you’re looking for?

startX = x;
startY = y;
endX   = x + 40 * Math.sin(angle);
endY   = y + 40 * Math.cos(angle);

And draw a line from (startX, startY) to (endX, endY) in whatever API you’re using.

Also note that angle is in radians. If you had it in degrees, you need to convert it first:

angle = angle * Math.PI / 180;