Java Code Examples for java.awt.geom.Point2D#distanceSq()

/**
 * Returns an index of a control point that is hit by the local location
 * @param localLocation the local location
 * @return the index; -1 if no control point was hit
 */
public final int getControlPointHitAt (Point localLocation) {
    int controlRadius = controlPointShape.getRadius ();
    controlRadius *= controlRadius;

    if (isFirstControlPointHitAt (localLocation))
        return 0;

    if (isLastControlPointHitAt (localLocation))
        return controlPoints.size () - 1;

    for (int i = 0; i < controlPoints.size (); i ++) {
        Point point = controlPoints.get (i);
        if (Point2D.distanceSq (point.x, point.y, localLocation.x, localLocation.y) <= controlRadius)
            return i;
    }

    return -1;
}
 

@Test
public void testTranslateHitTest() {
    TouchableTransformer toucher = new TouchableTransformer(
            new Dummy() {
                @Override
                public boolean hitTest(Point2D point) {
                    return point.distanceSq(0, 0) < 1.0;
                }
            }, AffineTransform.getTranslateInstance(10, 1));

    Assertions.assertTrue(toucher.hitTest(new Point2D.Double(10, 1)));
    Assertions.assertTrue(toucher.hitTest(new Point2D.Double(10.9, 1)));
    Assertions.assertTrue(toucher.hitTest(new Point2D.Double(9.1, 1)));
    Assertions.assertFalse(toucher.hitTest(new Point2D.Double(11.1, 1)));
    Assertions.assertFalse(toucher.hitTest(new Point2D.Double(8.9, 1)));
    Assertions.assertTrue(toucher.hitTest(new Point2D.Double(10.6, 1.6)));
    Assertions.assertFalse(toucher.hitTest(new Point2D.Double(10.8, 1.8)));
    Assertions.assertTrue(toucher.hitTest(new Point2D.Double(9.4, 0.4)));
    Assertions.assertFalse(toucher.hitTest(new Point2D.Double(9.2, 0.2)));
}
 

/**
 * Returns whether the local location hits the first control point (also meant to be the source anchor).
 * @param localLocation the local location
 * @return true if it hits the first control point
 */
public final boolean isFirstControlPointHitAt (Point localLocation) {
    int endRadius = endPointShape.getRadius ();
    endRadius *= endRadius;
    Point firstPoint = getFirstControlPoint ();
    if (firstPoint != null)
        if (Point2D.distanceSq (firstPoint.x, firstPoint.y, localLocation.x, localLocation.y) <= endRadius)
            return true;
    return false;
}
 

/**
 * Returns whether the local location hits the last control point (also meant to be the target anchor).
 * @param localLocation the local location
 * @return true if it hits the last control point
 */
public final boolean isLastControlPointHitAt (Point localLocation) {
    int endRadius = endPointShape.getRadius ();
    endRadius *= endRadius;
    Point lastPoint = getLastControlPoint ();
    if (lastPoint != null)
        if (Point2D.distanceSq (lastPoint.x, lastPoint.y, localLocation.x, localLocation.y) <= endRadius)
            return true;
    return false;
}
 

private Point2D getLastCommonPointInRootSpace(VisualConnection c1, VisualConnection c2) {
    if (c1.getFirst() != c2.getFirst()) {
        return null;
    }
    Point2D pos = ((VisualTransformableNode) c1.getFirst()).getRootSpacePosition();
    ConnectionGraphic g1 = c1.getGraphic();
    ConnectionGraphic g2 = c2.getGraphic();
    if ((g1 instanceof Polyline) && (g2 instanceof Polyline)) {
        Polyline poly1 = (Polyline) g1;
        Polyline poly2 = (Polyline) g2;
        int count = Math.min(poly1.getControlPointCount(), poly2.getControlPointCount());
        for (int i = 0; i <= count; i++) {
            Point2D pos1 = (i < poly1.getControlPointCount()) ? poly1.getControlPoint(i).getRootSpacePosition()
                                   : ((VisualTransformableNode) c1.getSecond()).getRootSpacePosition();
            Point2D pos2 = (i < poly2.getControlPointCount()) ? poly2.getControlPoint(i).getRootSpacePosition()
                                   : ((VisualTransformableNode) c2.getSecond()).getRootSpacePosition();
            if (pos1.distance(pos2) < SAME_POINT_DISTANCE_THRESHOLD) {
                pos = pos1;
            } else {
                double gradient = ConnectionHelper.calcGradient(pos, pos1, pos2);
                boolean sameSide = ((pos2.getX() > pos.getX()) == (pos1.getX() > pos.getX()))
                                           && ((pos2.getY() > pos.getY()) == (pos1.getY() > pos.getY()));
                if ((Math.abs(gradient) < SAME_POINT_GRADIENT_THRESHOLD) && sameSide) {
                    pos = (pos.distanceSq(pos1) < pos.distanceSq(pos2)) ? pos1 : pos2;
                }
                break;
            }
        }
    }
    return pos;
}
 

@Override
public boolean hitTestInLocalSpace(Point2D pointInLocalSpace) {
    return pointInLocalSpace.distanceSq(0, 0) < size * size / 4;
}
 

@Override
public boolean hitTestInLocalSpace(Point2D pointInLocalSpace) {
    return pointInLocalSpace.distanceSq(0, 0) < size * size / 4;
}
 

@Override
public boolean hitTestInLocalSpace(Point2D pointInLocalSpace) {
    double size = VisualCommonSettings.getNodeSize() - VisualCommonSettings.getStrokeWidth();
    return pointInLocalSpace.distanceSq(0, 0) < size * size / 4;
}
 

@Override
public boolean hitTestInLocalSpace(Point2D pointInLocalSpace) {
    return 4 * pointInLocalSpace.distanceSq(0, 0) < size * size;
}
 

@Override
public boolean hitTestInLocalSpace(Point2D pointInLocalSpace) {
    double size = VisualCommonSettings.getNodeSize() - VisualCommonSettings.getStrokeWidth();
    return pointInLocalSpace.distanceSq(0, 0) < size * size / 4;
}