private void Canvas_MouseDown(object sender, MouseButtonEventArgs e)
{
_currentState |= State.LEFTMOUSE_DOWN;
if (_currentState.HasFlag(State.DRAWING))
{
_lastDownedPoint = GetDot(e.GetPosition(shapeCanvas).ToVector());
_movingPoint = GDot.FromCoord(e.GetPosition(shapeCanvas).ToVector());
if (_drawingShape == null)
{
if (_currentState.HasFlag(State.CIRCLE))
{
_drawingShape = GCircle.FromTwoDots(_lastDownedPoint, _movingPoint);
}
else if (_currentState.HasFlag(State.LINE))
{
_drawingShape = GLine.FromTwoDots(_lastDownedPoint, _movingPoint);
}
else if (_currentState.HasFlag(State.DOT))
{
_drawingShape = _lastDownedPoint;
}
_drawingShape.Control.Stroke = Brushes.Blue;
shapeCanvas.Children.Add(_drawingShape.Control);
}
}
}
private void AddShape(GShape shape)
{
_shapes.Add(shape);
if (!shapeCanvas.Children.Contains(shape.Control))
{
shapeCanvas.Children.Add(shape.Control);
}
foreach (var c in shape.Childs)
{
if (!_shapes.Contains(c))
{
AddShape(c);
}
}
}
public override void IntersectWith(GShape gShape)
{
IntersectionResult res;
if (gShape is GLine)
{
res = Intersection.ParabolaLine(this, (GLine)gShape);
if (res.IntersectionPoints.Count == 0)
{
return;
}
IntersectionResults.Add(res);
}
else if (gShape is GParabola)
{
res = Intersection.ParabolaParabola(this, (GParabola)gShape);
if (res.IntersectionPoints.Count == 0)
{
return;
}
IntersectionResults.Add(res);
}
else if (gShape is GCircle)
{
res = Intersection.ParabolaCircle(this, (GCircle)gShape);
if (res.IntersectionPoints.Count == 0)
{
return;
}
IntersectionResults.Add(res);
}
}
private void Canvas_MouseUp(object sender, MouseButtonEventArgs e)
{
_currentState &= ~State.LEFTMOUSE_DOWN;
AddShape(_drawingShape);
_drawingShape = null; // 요거 없으면 새로 생성안함
}
