public double calcArea(Point2D A, Point2D B, Point2D C) {
double area =
Math.abs(
A.getX() * (B.getY() - C.getY())
+ B.getX() * (C.getY() - A.getY())
+ C.getX() * (A.getY() - B.getY()));
return area / 2;
}
@Override
public void mouseDragged(MouseEvent e, CS355Drawing model, Color c) {
// Get shape at saved index from model and verify it is a circle
Shape shape = model.getShape(this.index);
if (!(shape instanceof cs355.model.drawing.Circle)) {
GUIFunctions.printf(
"Invalid shape - expected cs355.model.drawing.Circle at index %d", this.index);
return;
}
// Cast the shape to a circle and save the new coordinates
Circle circle = (Circle) shape;
// Initialize new center coordinates to initial coordinates
Point2D.Double center = new Point2D.Double();
center.setLocation(this.initialCoordinates);
// Get current pointer coordinates
Point2D.Double currentCoordinates = new Point2D.Double();
currentCoordinates.setLocation(e.getPoint());
// Find difference between pointer and initial coordinates to get correct orientation
double xDifference = currentCoordinates.getX() - initialCoordinates.getX();
double yDifference = currentCoordinates.getY() - initialCoordinates.getY();
// Get radius
double radius = Math.min(Math.abs(xDifference), Math.abs(yDifference)) / 2.0;
// Get unit vectors for the differences to preserve sign
double xDirection = xDifference / Math.abs(xDifference);
double yDirection = yDifference / Math.abs(yDifference);
// Calculate position of the center of the circle
center.x = this.initialCoordinates.getX() + (xDirection * radius);
center.y = this.initialCoordinates.getY() + (yDirection * radius);
// Set the new parameters
circle.setCenter(center);
circle.setRadius(radius);
}
public boolean doHandleCheck(Point2D worldCoord, Shape selectedShape) {
Point2D.Double objCoord = new Point2D.Double();
AffineTransform worldToObj =
new AffineTransform(
Math.cos(selectedShape.getRotation()),
-Math.sin(selectedShape.getRotation()),
Math.sin(selectedShape.getRotation()),
Math.cos(selectedShape.getRotation()),
0,
0);
worldToObj.concatenate(
new AffineTransform(
1, 0, 0, 1, -selectedShape.getCenter().getX(), -selectedShape.getCenter().getY()));
worldToObj.transform(worldCoord, objCoord);
if (selectedShape instanceof Line) {
Line s = (Line) selectedShape;
Point2D.Double len =
new Point2D.Double(
s.getEnd().getX() - s.getCenter().getX(), s.getEnd().getY() - s.getCenter().getY());
if (objCoord.getX() * objCoord.getX() + objCoord.getY() * objCoord.getY()
< 100 * this.getScale()) {
return true;
} else if ((objCoord.getX() - len.getX()) * (objCoord.getX() - len.getX())
+ (objCoord.getY() - len.getY()) * (objCoord.getY() - len.getY())
< 100 * this.getScale()) {
return true;
}
} else if (selectedShape instanceof Square) {
Square s = (Square) selectedShape;
double c = s.getSize() / 2 + (20 * this.getScale());
if (objCoord.getX() * objCoord.getX() + (objCoord.getY() + c) * (objCoord.getY() + c)
< (100) * this.getScale()) {
return true;
}
} else if (selectedShape instanceof Rectangle) {
Rectangle s = (Rectangle) selectedShape;
double c = s.getHeight() / 2 + (20 * this.getScale());
if (objCoord.getX() * objCoord.getX() + (objCoord.getY() + c) * (objCoord.getY() + c)
< (100) * this.getScale()) {
return true;
}
} else if (selectedShape instanceof Ellipse) {
Ellipse s = (Ellipse) selectedShape;
double c = s.getHeight() / 2 + (20 * this.getScale());
if (objCoord.getX() * objCoord.getX() + (objCoord.getY() + c) * (objCoord.getY() + c)
< (100) * this.getScale()) {
return true;
}
} else if (selectedShape instanceof Triangle) {
Triangle s = (Triangle) selectedShape;
double lca =
Math.sqrt(
Math.pow((s.getCenter().getX() - s.getA().getX()), 2)
+ Math.pow((s.getCenter().getY() - s.getA().getY()), 2));
double lcb =
Math.sqrt(
Math.pow((s.getCenter().getX() - s.getB().getX()), 2)
+ Math.pow((s.getCenter().getY() - s.getB().getY()), 2));
double lcc =
Math.sqrt(
Math.pow((s.getCenter().getX() - s.getC().getX()), 2)
+ Math.pow((s.getCenter().getY() - s.getC().getY()), 2));
double c = Math.max(lca, Math.max(lcb, lcc));
if (objCoord.getX() * objCoord.getX() + (objCoord.getY() + c) * (objCoord.getY() + c)
< (100) * this.getScale()) {
return true;
}
}
return false;
}
public int geometryTest(Point2D worldCoord, int tolerance) {
shapeList = model.getShapes();
if (selectedShape != null) {
if (doHandleCheck(worldCoord, selectedShape)) {
return selectedIndex;
}
}
Point2D.Double objCoord = new Point2D.Double();
List<Shape> reversed = model.getShapesReversed();
for (int i = 0; i < reversed.size(); i++) {
Shape s = reversed.get(i);
AffineTransform worldToObj =
new AffineTransform(
Math.cos(s.getRotation()),
-Math.sin(s.getRotation()),
Math.sin(s.getRotation()),
Math.cos(s.getRotation()),
0,
0);
worldToObj.concatenate(
new AffineTransform(1, 0, 0, 1, -s.getCenter().getX(), -s.getCenter().getY()));
worldToObj.transform(worldCoord, objCoord);
if (s instanceof Line) {
Line l = (Line) s;
Point2D.Double d = new Point2D.Double();
double x1 = l.getEnd().getX() - l.getCenter().getX();
double y1 = l.getEnd().getY() - l.getCenter().getY();
double lineLength = Math.sqrt((x1) * (x1) + (y1) * (y1));
d.setLocation((x1) / lineLength, (y1) / lineLength);
double t = (objCoord.getX()) * d.getX() + (objCoord.getY()) * d.getY();
Point2D.Double q = new Point2D.Double();
q.setLocation(t * d.getX(), t * d.getY());
double qdist =
Math.sqrt(
(objCoord.getX() - q.getX()) * (objCoord.getX() - q.getX())
+ (objCoord.getY() - q.getY()) * (objCoord.getY() - q.getY()));
tolerance = (int) (tolerance * this.getScale());
if (qdist <= tolerance && t >= -tolerance && t <= lineLength + tolerance) {
selectedShape = l;
selectedIndex = shapeList.size() - i - 1;
setChanged();
notifyObservers();
return selectedIndex;
}
} else if (s instanceof Square) {
Square sq = (Square) s;
if (Math.abs(objCoord.getX()) < sq.getSize() / 2
&& Math.abs(objCoord.getY()) < sq.getSize() / 2) {
selectedShape = sq;
selectedIndex = shapeList.size() - i - 1;
setChanged();
notifyObservers();
return selectedIndex;
}
} else if (s instanceof Rectangle) {
Rectangle r = (Rectangle) s;
if (Math.abs(objCoord.getX()) < r.getWidth() / 2
&& Math.abs(objCoord.getY()) < r.getHeight() / 2) {
selectedShape = r;
selectedIndex = shapeList.size() - i - 1;
setChanged();
notifyObservers();
return selectedIndex;
}
} else if (s instanceof Circle) {
Circle c = (Circle) s;
if (objCoord.getX() * objCoord.getX() + objCoord.getY() * objCoord.getY()
< (c.getRadius() * c.getRadius())) {
selectedShape = c;
selectedIndex = shapeList.size() - i - 1;
setChanged();
notifyObservers();
return selectedIndex;
}
} else if (s instanceof Ellipse) {
Ellipse el = (Ellipse) s;
double a = el.getWidth() / 2;
double b = el.getHeight() / 2;
if ((objCoord.getX() * objCoord.getX()) / (a * a)
+ (objCoord.getY() * objCoord.getY()) / (b * b)
<= 1) {
selectedShape = el;
selectedIndex = shapeList.size() - i - 1;
setChanged();
notifyObservers();
return selectedIndex;
}
} else if (s instanceof Triangle) {
Triangle t = (Triangle) s;
Point2D.Double a =
new Point2D.Double(
t.getA().getX() - t.getCenter().getX(), t.getA().getY() - t.getCenter().getY());
Point2D.Double b =
new Point2D.Double(
t.getB().getX() - t.getCenter().getX(), t.getB().getY() - t.getCenter().getY());
Point2D.Double c =
new Point2D.Double(
t.getC().getX() - t.getCenter().getX(), t.getC().getY() - t.getCenter().getY());
double triArea = calcArea(a, b, c);
double a1 = calcArea(objCoord, b, c);
double a2 = calcArea(objCoord, a, c);
double a3 = calcArea(objCoord, a, b);
if (a1 + a2 + a3 <= triArea) {
selectedShape = t;
selectedIndex = shapeList.size() - i - 1;
setChanged();
notifyObservers();
return selectedIndex;
}
} else {
selectedShape = null;
selectedIndex = -1;
setChanged();
notifyObservers();
}
}
selectedShape = null;
selectedIndex = -1;
setChanged();
notifyObservers();
return -1;
}
@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);
}
}
}