triarea2d()

static double triarea2d ( const double *  P1, const double *  P2, const double *  P3  )

static

Calculate the area of a triangle in 2d.

Definition at line 72 of file effectivearea.c.

Referenced by ptarray_calc_areas(), and tune_areas().

{
        return fabs(0.5*((P1[0]-P2[0])*(P3[1]-P2[1])-(P1[1]-P2[1])*(P3[0]-P2[0])));
}

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