bool VertexAtBoundary(OECPVertex vtx, RectangleF square)
{
var leftLine = new OECPLine(new OECPVertex(square.Left, square.Top), new OECPVertex(square.Left, square.Bottom), true);
var rightLine = new OECPLine(new OECPVertex(square.Right, square.Top), new OECPVertex(square.Right, square.Bottom), true);
var topLine = new OECPLine(new OECPVertex(square.Left, square.Top), new OECPVertex(square.Right, square.Top), true);
var botLine = new OECPLine(new OECPVertex(square.Left, square.Bottom), new OECPVertex(square.Right, square.Bottom), true);
bool onLeft = leftLine.VertexOnLine(vtx);
if (onLeft)
{
_projVtx = leftLine.GetProjectVertex(vtx);
return(true);
}
bool onRight = rightLine.VertexOnLine(vtx);
if (onRight)
{
_projVtx = rightLine.GetProjectVertex(vtx);
return(true);
}
bool onTop = topLine.VertexOnLine(vtx);
if (onTop)
{
_projVtx = topLine.GetProjectVertex(vtx);
return(true);
}
bool onBot = botLine.VertexOnLine(vtx);
if (onBot)
{
_projVtx = botLine.GetProjectVertex(vtx);
return(true);
}
return(false);
}
