// ----------------------------------------------------------------------
public static bool IsPositionOnRectEdge(Vector2 pos, Rect r, iCS_EdgeEnum edge)
{
float maxDistance = iCS_EditorConfig.PortDiameter;
float distance = 2f * maxDistance;
float leftX = r.xMin;
float rightX = r.xMax;
float topY = r.yMin;
float bottomY = r.yMax;
switch (edge)
{
case iCS_EdgeEnum.Top:
distance = Math3D.DistanceFromHorizontalLineSegment(pos, leftX, rightX, topY);
break;
case iCS_EdgeEnum.Bottom:
distance = Math3D.DistanceFromHorizontalLineSegment(pos, leftX, rightX, bottomY);
break;
case iCS_EdgeEnum.Left:
distance = Math3D.DistanceFromVerticalLineSegment(pos, topY, bottomY, leftX);
break;
case iCS_EdgeEnum.Right:
distance = Math3D.DistanceFromVerticalLineSegment(pos, topY, bottomY, rightX);
break;
}
return(distance <= maxDistance);
}
// ----------------------------------------------------------------------
public iCS_EdgeEnum GetClosestEdge(Vector2 localPosition)
{
// Don't change edge if parent is iconized.
var parent = ParentNode;
if (parent.IsIconizedOnDisplay)
{
return(Edge);
}
var parentSize = parent.LocalSize;
float leftX = -0.5f * parentSize.x;
float rightX = 0.5f * parentSize.x;
float topY = -0.5f * parentSize.y;
float bottomY = 0.5f * parentSize.y;
var edge = iCS_EdgeEnum.Top;
float distance = Math3D.DistanceFromHorizontalLineSegment(localPosition, leftX, rightX, topY);
float d = Math3D.DistanceFromHorizontalLineSegment(localPosition, leftX, rightX, bottomY);
if (d < distance)
{
distance = d;
edge = iCS_EdgeEnum.Bottom;
}
d = Math3D.DistanceFromVerticalLineSegment(localPosition, topY, bottomY, leftX);
if (d < distance)
{
distance = d;
edge = iCS_EdgeEnum.Left;
}
d = Math3D.DistanceFromVerticalLineSegment(localPosition, topY, bottomY, rightX);
if (d < distance)
{
edge = iCS_EdgeEnum.Right;
}
return(edge);
}