@Override
public void mouseDragged(MouseEvent e) {
AffineTransform viewToWorld =
new AffineTransform(1, 0, 0, 1, viewPoint.getX(), viewPoint.getY());
AffineTransform scale = new AffineTransform(this.getScale(), 0, 0, this.getScale(), 0, 0);
viewToWorld.concatenate(scale);
p2 = new Point2D.Double(e.getPoint().getX(), e.getPoint().getY());
viewToWorld.transform(p2, p2);
if (button == "line") {
currentShape = model.getShape(model.getSize() - 1);
Line l = (Line) currentShape;
l.setEnd(p2);
model.deleteShape(model.getSize() - 1);
model.addShape(l);
} else if (button == "square") {
double size = Math.min((Math.abs(p1.getX() - p2.getX())), (Math.abs(p1.getY() - p2.getY())));
Point2D.Double upLeft = new Point2D.Double();
if (p1.getX() <= p2.getX() && p1.getY() <= p2.getY()) {
upLeft.setLocation(p1.getX(), p1.getY());
} else if (p1.getX() <= p2.getX() && p1.getY() > p2.getY()) {
upLeft.setLocation(p1.getX(), p1.getY() - size);
} else if (p1.getX() > p2.getX() && p1.getY() <= p2.getY()) {
upLeft.setLocation(p1.getX() - size, p1.getY());
} else {
upLeft.setLocation(p1.getX() - size, p1.getY() - size);
}
Point2D.Double center =
new Point2D.Double(upLeft.getX() + size / 2, upLeft.getY() + size / 2);
currentShape = model.getShape(model.getSize() - 1);
Square s = (Square) currentShape;
s.setCenter(center);
s.setSize(size);
model.deleteShape(model.getSize() - 1);
model.addShape(s);
} else if (button == "rectangle") {
Point2D.Double upLeft = new Point2D.Double();
upLeft.setLocation(Math.min(p1.getX(), p2.getX()), Math.min(p1.getY(), p2.getY()));
Double width = Math.abs(p1.getX() - p2.getX());
Double height = Math.abs(p1.getY() - p2.getY());
currentShape = model.getShape(model.getSize() - 1);
Rectangle r = (Rectangle) currentShape;
Point2D.Double center =
new Point2D.Double(upLeft.getX() + width / 2, upLeft.getY() + height / 2);
r.setHeight(height);
r.setWidth(width);
r.setCenter(center);
model.deleteShape(model.getSize() - 1);
model.addShape(r);
} else if (button == "circle") {
double size = Math.min((Math.abs(p1.getX() - p2.getX())), (Math.abs(p1.getY() - p2.getY())));
double radius = size / 2;
Point2D.Double upLeft = new Point2D.Double();
if (p1.getX() <= p2.getX() && p1.getY() <= p2.getY()) {
upLeft.setLocation(p1.getX(), p1.getY());
} else if (p1.getX() <= p2.getX() && p1.getY() > p2.getY()) {
upLeft.setLocation(p1.getX(), p1.getY() - size);
} else if (p1.getX() > p2.getX() && p1.getY() <= p2.getY()) {
upLeft.setLocation(p1.getX() - size, p1.getY());
} else {
upLeft.setLocation(p1.getX() - size, p1.getY() - size);
}
Point2D.Double center = new Point2D.Double(upLeft.getX() + radius, upLeft.getY() + radius);
currentShape = model.getShape(model.getSize() - 1);
Circle c = (Circle) currentShape;
c.setCenter(center);
c.setRadius(radius);
model.deleteShape(model.getSize() - 1);
model.addShape(c);
} else if (button == "ellipse") {
Point2D.Double center =
new Point2D.Double((p1.getX() + p2.getX()) / 2, (p1.getY() + p2.getY()) / 2);
Double width = Math.abs(p1.getX() - p2.getX());
Double height = Math.abs(p1.getY() - p2.getY());
currentShape = model.getShape(model.getSize() - 1);
Ellipse el = (Ellipse) currentShape;
el.setCenter(center);
el.setHeight(height);
el.setWidth(width);
model.deleteShape(model.getSize() - 1);
model.addShape(el);
} else if (button == "select" && selectedIndex > -1) {
if (handleSelected) {
AffineTransform worldToObj =
new AffineTransform(
1, 0, 0, 1, -selectedShape.getCenter().getX(), -selectedShape.getCenter().getY());
Point2D.Double objCoord = new Point2D.Double();
worldToObj.transform(p2, objCoord);
if (selectedShape instanceof Line) {
Line l = (Line) selectedShape;
if (lineHandleSelected == 1) {
Point2D.Double newCenter = new Point2D.Double(p2.getX(), p2.getY());
l.setCenter(newCenter);
} else if (lineHandleSelected == 2) {
Point2D.Double newEnd = new Point2D.Double(p2.getX(), p2.getY());
l.setEnd(newEnd);
}
selectedShape = l;
model.setShape(selectedIndex, selectedShape);
} else {
double theta =
Math.acos(
-objCoord.getY()
/ Math.sqrt(Math.pow(objCoord.getX(), 2) + Math.pow(-objCoord.getY(), 2)));
if (objCoord.getX() < 0) {
theta = -theta;
}
selectedShape.setRotation(theta);
model.setShape(selectedIndex, selectedShape);
}
} else {
Point2D.Double newCenter =
new Point2D.Double((p2.getX() - diff.getX()), (p2.getY() - diff.getY()));
if (selectedShape instanceof Line) {
Line l = (Line) selectedShape;
Point2D.Double len =
new Point2D.Double(
l.getEnd().getX() - l.getCenter().getX(),
l.getEnd().getY() - l.getCenter().getY());
Point2D.Double newEnd =
new Point2D.Double((newCenter.getX() + len.getX()), (newCenter.getY() + len.getY()));
l.setEnd(newEnd);
selectedShape = l;
} else if (selectedShape instanceof Triangle) {
Triangle t = (Triangle) selectedShape;
Point2D.Double change =
new Point2D.Double(
newCenter.getX() - selectedShape.getCenter().getX(),
newCenter.getY() - selectedShape.getCenter().getY());
t.setA(
new Point2D.Double(t.getA().getX() + change.getX(), t.getA().getY() + change.getY()));
t.setB(
new Point2D.Double(t.getB().getX() + change.getX(), t.getB().getY() + change.getY()));
t.setC(
new Point2D.Double(t.getC().getX() + change.getX(), t.getC().getY() + change.getY()));
selectedShape = t;
}
selectedShape.setCenter(newCenter);
model.setShape(selectedIndex, selectedShape);
}
}
}
