Trying to make an object rotate towards the mouse in JavaFX

Question

I've been trying to use the atan2 function to rotate an object (triangle) towards the mouse, but it can't seem to rotate correctly in one direction. any ideas?

Point p = MouseInfo.getPointerInfo().getLocation();
        double ydistance = p.y-triangle.getTranslateY();
        double xdistance = p.x-triangle.getTranslateX();
        double angle5 = Math.toDegrees(atan2(xdistance, ydistance));
        triangle.setRotate(angle5);

Answer 1

You have inverted the x and y

atan2 is defined as atan2(y, x) not atan2(x, y), as you might expect.

refer to https://www.geeksforgeeks.org/java-lang-math-atan2-java/

It is the counterclockwise angle, measured in radian, between the positive X-axis, and the point (x, y).

also note that radian 0 begins from positive X-Axis,Y=0 (East)