我遇到了javafx和透视变换效果的问题。我想能够拖动矩形的一个边缘，并能够拉动该边缘。到此为止没有问题。但是我也希望通过我移动的点来变换矩形，这样点（边缘）将表示该特殊边缘的透视变换效果的位置。我希望你明白我的意思。我在谷歌搜索了很多，并尝试了一些不同的解决方案，但它没有奏效。所以这里是我的矩形的代码以及点（每个鼠标可以移动）：
static double orgSceneX, orgSceneY;
static double orgTranslateX, orgTranslateY;
private static int c_X_off = 0;
private static int c_Y_off = 0;
private static int c1_X_off = 0;
private static int c1_Y_off = 0;
private static int c2_X_off = 0;
private static int c2_Y_off = 0;
private static int c3_X_off = 0;
private static int c3_Y_off = 0;
public static void addRectangle(int X, int Y, int WIDTH, int HEIGHT) {
Rectangle r = new Rectangle();
r.setX(X);
r.setY(Y);
r.setWidth(WIDTH);
r.setHeight(HEIGHT);
r.setCursor(Cursor.MOVE);
r.setFill(Paint.valueOf("RED"));
Rectangle r2 = new Rectangle();
r2.setX(X/2);
r2.setY(Y/2);
r2.setWidth(WIDTH/2);
r2.setHeight(HEIGHT/2);
r2.setCursor(Cursor.MOVE);
r2.setStroke(Color.BLUE);
r2.setStrokeWidth(2);
r2.setFill(Paint.valueOf("RED"));
final PerspectiveTransform pt = new PerspectiveTransform();
r2.setEffect(pt);
Circle c = new Circle();
c.setFill(Color.BLUE); c.setRadius(6); c.setCursor(Cursor.NW_RESIZE);
c.setTranslateX(r2.getTranslateX()-WIDTH/4);
c.setTranslateY(r2.getTranslateY()-HEIGHT/4);
Circle c1 = new Circle();
c1.setFill(Color.BLUE); c1.setRadius(6); c1.setCursor(Cursor.NE_RESIZE);
c1.setTranslateX(r2.getTranslateX()+WIDTH/4);
c1.setTranslateY(r2.getTranslateY()-HEIGHT/4);
Circle c2 = new Circle();
c2.setFill(Color.BLUE); c2.setRadius(6); c2.setCursor(Cursor.SE_RESIZE);
c2.setTranslateX(r2.getTranslateX()+WIDTH/4);
c2.setTranslateY(r2.getTranslateY()+HEIGHT/4);
Circle c3 = new Circle();
c3.setFill(Color.BLUE);c3.setRadius(6); c3.setCursor(Cursor.SW_RESIZE);
c3.setTranslateX(r2.getTranslateX()-WIDTH/4);
c3.setTranslateY(r2.getTranslateY()+HEIGHT/4);
EventHandler<MouseEvent> circleOnMousePressedEventHandler =
new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent t) {
orgSceneX = t.getSceneX();
orgSceneY = t.getSceneY();
orgTranslateX = ((Rectangle)(t.getSource())).getTranslateX();
orgTranslateY = ((Rectangle)(t.getSource())).getTranslateY();
}
};
EventHandler<MouseEvent> circleOnMouseDraggedEventHandler =
new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent t) {
double offsetX = t.getSceneX() - orgSceneX;
double offsetY = t.getSceneY() - orgSceneY;
double newTranslateX = orgTranslateX + offsetX;
double newTranslateY = orgTranslateY + offsetY;
((Rectangle)(t.getSource())).setTranslateX(newTranslateX);
((Rectangle)(t.getSource())).setTranslateY(newTranslateY);
r.setTranslateX(newTranslateX * 2);
r.setTranslateY(newTranslateY * 2);
r.setX(newTranslateX * 2);
r.setY(newTranslateY * 2);
c.setTranslateX(r2.getTranslateX()-WIDTH/4+c_X_off);
c.setTranslateY(r2.getTranslateY()-HEIGHT/4+c_Y_off);
c1.setTranslateX(r2.getTranslateX()+WIDTH/4+c1_X_off);
c1.setTranslateY(r2.getTranslateY()-HEIGHT/4+c1_Y_off);
c2.setTranslateX(r2.getTranslateX()+WIDTH/4+c2_X_off);
c2.setTranslateY(r2.getTranslateY()+HEIGHT/4+c2_Y_off);
c3.setTranslateX(r2.getTranslateX()-WIDTH/4+c3_X_off);
c3.setTranslateY(r2.getTranslateY()+HEIGHT/4+c3_Y_off);
}
};
EventHandler<MouseEvent> circleOnMousePressedEventHandler2 =
new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent t) {
orgSceneX = t.getSceneX();
orgSceneY = t.getSceneY();
orgTranslateX = ((Circle)(t.getSource())).getTranslateX();
orgTranslateY = ((Circle)(t.getSource())).getTranslateY();
}
};
EventHandler<MouseEvent> circleOnMouseDraggedEventHandler2 =
new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent t) {
double offsetX = t.getSceneX() - orgSceneX;
double offsetY = t.getSceneY() - orgSceneY;
double newTranslateX = orgTranslateX + offsetX;
double newTranslateY = orgTranslateY + offsetY;
((Circle)(t.getSource())).setTranslateX(newTranslateX);
((Circle)(t.getSource())).setTranslateY(newTranslateY);
if(t.getSource().equals(c)) {
c_X_off = (int) offsetX;
c_Y_off = (int) offsetY;
} else
if(t.getSource().equals(c1)) {
c1_X_off = (int) offsetX;
c1_Y_off = (int) offsetY;
} else
if(t.getSource().equals(c2)) {
c2_X_off = (int) offsetX;
c2_Y_off = (int) offsetY;
} else
if(t.getSource().equals(c3)) {
c3_X_off = (int) offsetX;
c3_Y_off = (int) offsetY;
}
pt.setUlx(5);
pt.setUly(5);
pt.setUrx(5);
pt.setUry(5);
pt.setLrx(5);
pt.setLry(5);
pt.setLlx(5);
pt.setLly(5);
}
};
r2.setOnMousePressed(circleOnMousePressedEventHandler);
r2.setOnMouseDragged(circleOnMouseDraggedEventHandler);
c.setOnMousePressed(circleOnMousePressedEventHandler2);
c.setOnMouseDragged(circleOnMouseDraggedEventHandler2);
c1.setOnMousePressed(circleOnMousePressedEventHandler2);
c1.setOnMouseDragged(circleOnMouseDraggedEventHandler2);
c2.setOnMousePressed(circleOnMousePressedEventHandler2);
c2.setOnMouseDragged(circleOnMouseDraggedEventHandler2);
c3.setOnMousePressed(circleOnMousePressedEventHandler2);
c3.setOnMouseDragged(circleOnMouseDraggedEventHandler2);
PrjMapper.addObject(r);
PrjGui.root.getChildren().add(r2);
PrjGui.root.getChildren().add(c);
PrjGui.root.getChildren().add(c1);
PrjGui.root.getChildren().add(c2);
PrjGui.root.getChildren().add(c3);
PrjGui.scene.setRoot(PrjGui.root);
}
矩形和圆圈被添加到我的gui和显示器的StackPane中。 为什么？ 我正在尝试为VideoMapping创建一个软件。如果您需要更多代码，请告诉我！ 非常感谢！
Paulee