void SetInsertedHandlesPosition(BezierSegment insertedSegment, BezierSegment neighborSegment, BezierSegment segment)
{
int index = _currentHoverData.HoveredSegmentPointIndex;
Vector2 tangent = segment.Tangent(index - 1);
float segmentCount = segment.SegmentCount;
float quotient = (index / segmentCount);
Vector2 b = segment.SegmentPoints[index - 1];
insertedSegment.Point = b;
Vector2 q = CurveMath.GetPointOnLine(neighborSegment.SecondHandle, segment.FirstHandle, quotient);
Vector2 q0 = neighborSegment.MoveHandleCloserToPoint(1 - quotient, true);
segment.MoveHandleCloserToPoint(quotient, false);
Vector2 r0 = CurveMath.GetIntersectionPointCoordinates(q0, q - q0, b, tangent);
insertedSegment.SecondHandle = b + (b - r0) / index * (segmentCount - index);
insertedSegment.FirstHandle = r0;
_currentPathObject.UpdatePointsHandlesRenderer();
}
public override bool OverPathObject()
{
Vector2 mousePosition = Program.Instance.GetMouseCanvasPosition();
// not over bounding box
if (!MouseOverObject())
{
return(false);
}
int crossings = 0;
for (int i = 0; i < _pointsSorted.Count - 1; i++)
{
float biggerY = _pointsSorted[i].y > _pointsSorted[i + 1].y ? _pointsSorted[i].y : _pointsSorted[i + 1].y;
bool isFound;
if (mousePosition.y <= biggerY)
{
if ((mousePosition.x >= _pointsSorted[i].x && mousePosition.x <= _pointsSorted[i + 1].x) || (mousePosition.x <= _pointsSorted[i].x && mousePosition.x >= _pointsSorted[i + 1].x))
{
if (mousePosition.y <= CurveMath.GetIntersectionPointCoordinates(_pointsSorted[i], _pointsSorted[i + 1], mousePosition, mousePosition + Vector2.up, out isFound).y)
{
if (isFound)
{
crossings++;
}
}
}
}
}
return(crossings % 2 == 1);
}
void IsAnyOtherPointBelow(out bool isAnysmaller, Vector2 left, Vector2 right)
{
float leftY = left.y;
float leftX = left.x;
float rightY = right.y;
float rightX = right.x;
float _currentSmallest = float.MaxValue;
isAnysmaller = false;
for (int i = 2; i < _points.Count - 2; i++)
{
Vector2 currentPoint = _points[i];
if (currentPoint.x > leftX && currentPoint.x < rightX)
{
float currentY = currentPoint.y;
if (currentY < leftY && currentY < rightY)
{
Vector2 followingPoint = _points[i + 1];
Vector2 previousPoint = _points[i - 1];
if ((previousPoint.y > leftY && previousPoint.x > leftX && previousPoint.x < rightX) ||
(followingPoint.y > leftY && followingPoint.x > leftX && followingPoint.x < rightX))
{
bool found;
Vector2 intersection = CurveMath.GetIntersectionPointCoordinates(currentPoint, previousPoint, left, right, out found);
if (found && CurveMath.IsPointOnLine(left, right, intersection))
{
if (currentY < _currentSmallest)
{
_currentSmallest = currentY;
beneathIndex = i;
isAnysmaller = true;
}
}
}
}
}
}
}