/**
* Sets an end as edge (starting point if none end were defined, ending point otherwise)
*
* @param vertex1 one of the vertices of the intercepted edge
* @param vertex2 one of the vertices of the intercepted edge
* @return false if all ends were already defined, true otherwise
*/
private bool SetEdge(Vertex vertex1, Vertex vertex2)
{
Vector3 point1 = vertex1.GetPosition();
Vector3 point2 = vertex2.GetPosition();
Vector3 edgeDirection = new Vector3(point2.x - point1.x, point2.y - point1.y, point2.z - point1.z);
Line edgeLine = new Line(edgeDirection, point1);
if (index == 0)
{
startVertex = vertex1;
startType = EDGE;
startPos = line.ComputeLineIntersection(edgeLine);
StartDist = line.ComputePointToPointDistance(startPos);
middleType = FACE;
index++;
return(true);
}
else if (index == 1)
{
endVertex = vertex1;
endType = EDGE;
endPos = line.ComputeLineIntersection(edgeLine);
endDist = line.ComputePointToPointDistance(endPos);
middleType = FACE;
index++;
//the ending point distance should be smaller than starting point distance
if (StartDist > endDist)
{
SwapEnds();
}
return(true);
}
else
{
return(false);
}
}
/**
* Sets an end as edge (starting point if none end were defined, ending point otherwise)
*
* @param vertex1 one of the vertices of the intercepted edge
* @param vertex2 one of the vertices of the intercepted edge
* @return false if all ends were already defined, true otherwise
*/
private bool SetEdge(Vertex vertex1, Vertex vertex2)
{
Vector3d point1 = vertex1.Position;
Vector3d point2 = vertex2.Position;
Vector3d edgeDirection = new Vector3d(point2.X - point1.X, point2.Y - point1.Y, point2.Z - point1.Z);
Line edgeLine = new Line(edgeDirection, point1);
if (_Index == 0)
{
_StartVertex = vertex1;
_StartType = EDGE;
_StartPos = Line.ComputeLineIntersection(edgeLine);
StartDist = Line.ComputePointToPointDistance(_StartPos);
_MiddleType = FACE;
_Index++;
return(true);
}
else if (_Index == 1)
{
_EndVertex = vertex1;
_EndType = EDGE;
_EndPos = Line.ComputeLineIntersection(edgeLine);
_EndDist = Line.ComputePointToPointDistance(_EndPos);
_MiddleType = FACE;
_Index++;
//the ending point distance should be smaller than starting point distance
if (StartDist > _EndDist)
{
SwapEnds();
}
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 设交线的结束点在平面的边上；
/// 如果没有指定过结束点，就指定起点在边上，否则指定结束点在边上
/// </summary>
/// <param name="vertex1">交线线段的其中一点</param>
/// <param name="vertex2">交线线段的其中一点</param>
/// <returns></returns>
private bool SetEdge(Vertex vertex1, Vertex vertex2)
{
Vector3Double point1 = vertex1.Position;
Vector3Double point2 = vertex2.Position;
Vector3Double edgeDirection = new Vector3Double(point2.x - point1.x, point2.y - point1.y, point2.z - point1.z);
Line edgeLine = new Line(edgeDirection, point1);
if (NumEndsSet == 0)
{
StartVertex = vertex1;
StartType = EDGE;
StartPosition = line.ComputeLineIntersection(edgeLine);
StartDistance = line.ComputePointToPointDistance(StartPosition);
IntermediateType = FACE;
NumEndsSet++;
return(true);
}
else if (NumEndsSet == 1)
{
EndVertex = vertex1;
EndType = EDGE;
EndPosition = line.ComputeLineIntersection(edgeLine);
EndDistance = line.ComputePointToPointDistance(EndPosition);
IntermediateType = FACE;
NumEndsSet++;
//the ending point distance should be smaller than starting point distance
if (StartDistance > EndDistance)
{
SwapEnds();
}
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Sets an end as edge (starting point if none end were defined, ending point otherwise)
/// </summary>
/// <param name="vertex1"></param>
/// <param name="vertex2"></param>
/// <returns>false if all ends were already defined, true otherwise</returns>
private bool SetEdge(Vertex vertex1, Vertex vertex2)
{
Vector3 edgeDirection = vertex2.Position - vertex1.Position;
Line edgeLine = new Line(edgeDirection, vertex1.Position);
if (index == 0)
{
StartVertex = vertex1;
StartType = SegmentEnd.Edge;
StartPosition = line.ComputeLineIntersection(edgeLine);
StartDistance = line.ComputePointToPointDistance(StartPosition);
MiddleType = SegmentEnd.Face;
index++;
return(true);
}
else if (index == 1)
{
EndVertex = vertex1;
EndType = SegmentEnd.Edge;
EndPosition = line.ComputeLineIntersection(edgeLine);
EndDistance = line.ComputePointToPointDistance(EndPosition);
MiddleType = SegmentEnd.Face;
index++;
//the ending point distance should be smaller than starting point distance
if (StartDistance > EndDistance)
{
SwapEnds();
}
return(true);
}
else
{
return(false);
}
}