Protractor.java 文件源码

public void update() {
//            System.out.println( "leftLeg.getAngle() = " + leftLeg.getAngle() );
//            System.out.println( "right.getAngle() = " + rightLeg.getAngle() );
            double arcDist = 30;
            Arc2D.Double arc = new Arc2D.Double( -arcDist, -arcDist, arcDist * 2, arcDist * 2, toDegrees( 0 ), toDegrees( 0 ), Arc2D.Double.OPEN );

            Point2D p1 = Vector2D.createPolar( 20, leftLeg.getAngle() ).getDestination( new Point2D.Double() );
            Point2D p2 = Vector2D.createPolar( 20, rightLeg.getAngle() ).getDestination( new Point2D.Double() );
            if ( getDegreesSigned() >= 0 ) {
                arc.setAngles( p1, p2 );
            }
            else {
                arc.setAngles( p2, p1 );
            }
            path.setPathTo( arc );
        }