/// <summary>
/// <para>获取otherVertsPloy相对于mainPoly的覆盖关系:(只在主多边形上找投影轴, 并且不考虑多边形中空的情况)</para>
/// <para>[ FullOverlap ]: otherVertsPloy完全重叠到mainPloy</para>
/// <para>[ PartOverlay ]：otherVertsPloy部分重叠mainPloy</para>
/// <para>[ NotOverlay ]：两个多边形互不重叠</para>
/// </summary>
/// <param name="mainPoly"></param>
/// <param name="otherVertsPloy"></param>
/// <returns>
/// FullOverlap: otherVertsPloy完全重叠到mainPloy
/// PartOverlay：otherVertsPloy部分重叠mainPloy
/// NotOverlay：两个多边形互不重叠
/// </returns>
public OverlapRelation GetOverlapRelation(Poly mainPoly, Vector3d[] otherVertsPloy)
{
double[] range;
PolySide[] sides = mainPoly.sidesList[0];
OverlapRelation relation = OverlapRelation.FullOverlap;
OverlapRelation tmpRelation;
for (int i = 0; i < sides.Length; i++)
{
range = ProjectPoly(sides[i].vertDir, otherVertsPloy);
tmpRelation = _OverlapRelation(range[0], range[1], mainPoly.projRange[i].min, mainPoly.projRange[i].max);
if (tmpRelation == OverlapRelation.PartOverlay)
{
relation = OverlapRelation.PartOverlay;
}
else if (tmpRelation == OverlapRelation.FullOverlap &&
relation != OverlapRelation.PartOverlay)
{
relation = OverlapRelation.FullOverlap;
}
else if (tmpRelation == OverlapRelation.NotOverlay)
{
return(OverlapRelation.NotOverlay);
}
}
return(relation);
}
/// <summary>
/// 生成指定地面网格单元格投影到TriFace上的体素Box
/// </summary>
/// <param name="cellx"></param>
/// <param name="cellz"></param>
void CreateFloorGridCellProjTriFaceVoxBox(int cellx, int cellz)
{
Vector3d[] rect = voxSpace.GetFloorGridCellRect(cellx, cellz);
OverlapRelation relation = geoAlgo.GetOverlapRelation(polyProjectionFloor, rect);
if (relation == OverlapRelation.NotOverlay)
{
return;
}
Vector3d[] projectionPts;
if (relation == OverlapRelation.PartOverlay)
{
int count = geoAlgo.InRect2DCount(rect[0].x, rect[2].x, rect[0].z, rect[1].z, vertexsProjectionFloor, ref inRectIdx);
if (count == vertexsProjectionFloor.Length)
{
projectionPts = vertexs;
}
else
{
edgePloyPts.Clear();
if (faceDirType != DirCmpInfo.Vertical)
{
for (int i = 0; i < rect.Length; i++)
{
if (geoAlgo.IsInsidePoly2D(polyProjectionFloor, rect[i]))
{
edgePloyPts.Add(rect[i]);
}
}
}
for (int i = 0; i < count; i++)
{
edgePloyPts.Add(vertexsProjectionFloor[inRectIdx[i]]);
}
for (int i = 0; i < preCellRectSides.Length; i++)
{
preCellRectSides[i].startpos = rect[i];
}
Vector3d[] pts = geoAlgo.SolvePolySidesCrossPoints2D(preCellRectSides, polyProjectionFloor.sidesList[0]);
for (int i = 0; i < pts.Length; i++)
{
edgePloyPts.Add(pts[i]);
}
projectionPts = CreateProjectionToTriFacePts(edgePloyPts.ToArray());
}
}
else
{
projectionPts = CreateProjectionToTriFacePts(rect);
}
CreateVoxBoxToList(projectionPts, cellx, cellz);
}