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;
}
