How to rotate a vertex around a certain point?

Question

Imagine you have two points in 2d space and you need to rotate one of these points by X degrees with the other point acting as a center.

float distX = Math.a         


        

Answer 1

Assuming you are usign the Java Graphics2D API, try this code -

    Point2D result = new Point2D.Double();
    AffineTransform rotation = new AffineTransform();
    double angleInRadians = (angle * Math.PI / 180);
    rotation.rotate(angleInRadians, pivot.getX(), pivot.getY());
    rotation.transform(point, result);
    return result;

where pivot is the point you are rotating around.