//切割 之 未切割到顶点
private void CutNoVert(float vert1, float vert2, float vert3, OneTriangleData buffe)
{
bool isSingleVertOnCutNormal; //单顶点，是否在切割法线边
Vector3 leftCutPos, rightCutPos;
int leftCutIndex, rightCutIndex;
int singleVertIndex, leftVertIndex, rightVertIndex;
// 四边形切：从 单顶点的左顶点 切。
if (vert2 * vert3 > 0) //23共边，1独
{
leftCutPos = CutLine(buffe.vertP1, buffe.vertP2);
rightCutPos = CutLine(buffe.vertP1, buffe.vertP3);
singleVertIndex = buffe.index1;
leftVertIndex = buffe.index2;
rightVertIndex = buffe.index3;
if (vert1 > 0)
{
isSingleVertOnCutNormal = true;
}
else
{
isSingleVertOnCutNormal = false;
}
}
else if (vert1 * vert3 > 0) //13共 ，2独
{
leftCutPos = CutLine(buffe.vertP2, buffe.vertP3);
rightCutPos = CutLine(buffe.vertP2, buffe.vertP1);
singleVertIndex = buffe.index2;
leftVertIndex = buffe.index3;
rightVertIndex = buffe.index1;
if (vert2 > 0)
{
isSingleVertOnCutNormal = true;
}
else
{
isSingleVertOnCutNormal = false;
}
}
else //12g共，3独
{
leftCutPos = CutLine(buffe.vertP3, buffe.vertP1);
rightCutPos = CutLine(buffe.vertP3, buffe.vertP2);
singleVertIndex = buffe.index3;
leftVertIndex = buffe.index1;
rightVertIndex = buffe.index2;
if (vert3 > 0)
{
isSingleVertOnCutNormal = true;
}
else
{
isSingleVertOnCutNormal = false;
}
}
allPoint.Add(leftCutPos);
leftCutIndex = allPoint.Count - 1;
allPoint.Add(rightCutPos);
rightCutIndex = allPoint.Count - 1;
if (isSingleVertOnCutNormal)
{
AddTriangToTempList1(singleVertIndex, leftCutIndex, rightCutIndex, tempVert1, tempNormal1, triangles1, pointIndex1, otherPointIndex1);
AddTriangToTempList1(leftVertIndex, rightCutIndex, leftCutIndex, tempVert2, tempNormal2, triangles2, pointIndex2, otherPointIndex2);
AddTriangToTempList2(leftVertIndex, rightVertIndex, rightCutIndex, tempVert2, tempNormal2, triangles2, pointIndex2, otherPointIndex2);
}
else
{
AddTriangToTempList1(singleVertIndex, leftCutIndex, rightCutIndex, tempVert2, tempNormal2, triangles2, pointIndex2, otherPointIndex2);
AddTriangToTempList1(leftVertIndex, rightCutIndex, leftCutIndex, tempVert1, tempNormal1, triangles1, pointIndex1, otherPointIndex1);
AddTriangToTempList2(leftVertIndex, rightVertIndex, rightCutIndex, tempVert1, tempNormal1, triangles1, pointIndex1, otherPointIndex1);
}
}
//切割到顶点时：
private void CutInVert(float vert1, float vert2, float vert3, OneTriangleData buffe)
{
Vector3 cutPos;
//1 表示法线边
int cutIndex, leftIndex1, leftIndex2, rightIndex1, rightIndex2;
if (vert1 == 0) //切割到顶点1
{
cutPos = CutLine(buffe.vertP2, buffe.vertP3);
if (vert2 > 0)
{
leftIndex1 = buffe.index1;
rightIndex1 = buffe.index2;
leftIndex2 = buffe.index3;
rightIndex2 = buffe.index1;
}
else
{
leftIndex2 = buffe.index1;
rightIndex2 = buffe.index2;
leftIndex1 = buffe.index3;
rightIndex1 = buffe.index1;
}
}
else if (vert2 == 0) //切割到顶点2
{
cutPos = CutLine(buffe.vertP1, buffe.vertP3);
if (vert1 > 0)
{
leftIndex1 = buffe.index1;
rightIndex1 = buffe.index2;
leftIndex2 = buffe.index2;
rightIndex2 = buffe.index3;
}
else
{
leftIndex2 = buffe.index1;
rightIndex2 = buffe.index2;
leftIndex1 = buffe.index2;
rightIndex1 = buffe.index3;
}
}
else ////切割到顶点3
{
cutPos = CutLine(buffe.vertP2, buffe.vertP1);
if (vert1 > 0)
{
leftIndex1 = buffe.index3;
rightIndex1 = buffe.index1;
leftIndex2 = buffe.index2;
rightIndex2 = buffe.index3;
}
else
{
leftIndex2 = buffe.index3;
rightIndex2 = buffe.index1;
leftIndex1 = buffe.index2;
rightIndex1 = buffe.index3;
}
}
allPoint.Add(cutPos);
cutIndex = allPoint.Count - 1;
AddTriangToTempList2(leftIndex1, rightIndex1, cutIndex, tempVert1, tempNormal1, triangles1, pointIndex1, otherPointIndex1);
AddTriangToTempList2(leftIndex2, rightIndex2, cutIndex, tempVert2, tempNormal2, triangles2, pointIndex2, otherPointIndex2);
}
