TCachingMeshSDF::Orientation

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References

static int Orientation  
&40;  
    double X1,  
    double Y1,  
    double X2,  
    double Y2,  
    double & TwiceSignedArea  
&41;  
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static int Orientation &40;     double X1,     double Y1,     double X2,     double Y2,     double & TwiceSignedArea &41;

Remarks

Calculate twice signed area of triangle (0,0)-(X1,Y1)-(X2,Y2) return an SOS-determined sign (-1, +1, or 0 only if it's a truly degenerate triangle)