private LowPolyMotion.xyz NewEndXYZ(LowPolyMotion.GridConfig gridConfig, int rect_i, int rect_j)
{
LowPolyMotion.xyz result = new LowPolyMotion.xyz(0, 0, rand.Next(LowPolyMotion.rangeZ.min, LowPolyMotion.rangeZ.max));
int edgeIndex = rand.Next(0, 4);// 0~3: 上下左右边
double bias = rand.NextDouble();
switch (edgeIndex)
{
case 0:
result.x = (int)(gridConfig.getCrossCellWidth() * rect_i + gridConfig.getCrossCellWidth() * bias);
result.y = gridConfig.getDirectionCellHeight() * rect_j;
break;
case 1:
result.x = (int)(gridConfig.getCrossCellWidth() * rect_i + gridConfig.getCrossCellWidth() * bias);
result.y = gridConfig.getDirectionCellHeight() * (rect_j + 1);
break;
case 2:
result.x = gridConfig.getCrossCellWidth() * rect_i;
result.y = (int)(gridConfig.getDirectionCellHeight() * rect_j + gridConfig.getDirectionCellHeight() * bias);
break;
default:
result.x = gridConfig.getCrossCellWidth() * (rect_i + 1);
result.y = (int)(gridConfig.getDirectionCellHeight() * rect_j + gridConfig.getDirectionCellHeight() * bias);
break;
}
return(result);
}
public static LowPolyMotion.xyz Cal_3DGetFocus(LowPolyMotion.xyz p1, LowPolyMotion.xyz p2, LowPolyMotion.xyz p3) // 求空间三角形重心坐标
{
LowPolyMotion.xyz oP = new LowPolyMotion.xyz(0, 0, 0);
oP.x = (p1.x + p2.x + p3.x) / 3;
oP.y = (p1.y + p2.y + p3.y) / 3;
oP.z = (p1.z + p2.z + p3.z) / 3;
return(oP);
}
public static LowPolyMotion.Vector Cal_3DNormalVector(LowPolyMotion.xyz p1, LowPolyMotion.xyz p2, LowPolyMotion.xyz p3) // 计算空间面的法向量
{
LowPolyMotion.Vector NV = new LowPolyMotion.Vector(0, 0, 0);
LowPolyMotion.Vector tempV1 = new LowPolyMotion.Vector(0, 0, 0);
LowPolyMotion.Vector tempV2 = new LowPolyMotion.Vector(0, 0, 0);
tempV1 = Cal_3DGetVector(p1, p2);
tempV2 = Cal_3DGetVector(p1, p3);
NV.x = tempV1.y * tempV2.z - tempV1.z * tempV2.y;
NV.y = -(tempV1.x * tempV2.z - tempV1.z * tempV2.x);
NV.z = tempV1.x * tempV2.y - tempV1.y * tempV2.x;
return(NV);
}
private LowPolyMotion.xyz NewEndXYZ(int maxX, int maxY, int minZ, int maxZ)
{
LowPolyMotion.xyz result = new LowPolyMotion.xyz(rand.Next(0, maxX + 1), rand.Next(0, maxY + 1), rand.Next(0, maxZ + 1));
return(result);
}
public static LowPolyMotion.Vector Cal_3DGetVector(LowPolyMotion.xyz p1, LowPolyMotion.xyz p2) // 求空间向量
{
LowPolyMotion.xyz deltaXYZ = p2 - p1;
LowPolyMotion.Vector v = new LowPolyMotion.Vector(deltaXYZ.x, deltaXYZ.y, deltaXYZ.z);
return(v);
}
