如何判断点在三角面片内

[fengxiuyaun]

https://github.com/YadiraF/face3d/blob/2fc26906d159a11398cd3e7a9b3f16b6f8937da3/face3d/mesh/cython/mesh_core.cpp#L41

这里应该判断在是否在3个顶点所在的线段上，不然会有个毛刺。
修改代码如下
if (dot00*dot11 - dot01 * dot01 == 0)
{
if (dot00 > dot11) {
float u = v2.x / v0.x;
float v = v2.y / v0.y;
return u == v;
}
else
{
float u = v2.x / v1.x;
float v = v2.y / v1.y;
return u == v;
}
}