Returns the interpolated value according to the given equation.
Before using this function one must construct an equation for the polygon using STATE_math_calculate_polygon_interpolation_equation
double xyz[3]
A point on the polygon plane that we want get the interpolated value.
double equation[4]
The equation as was calculated by STATE_math_calculate_polygon_interpolation_equation()
The meaning of this equation should not concern the user.
int equation_type
The equation_type as was returned by STATE_math_calculate_polygon_interpolation_equation()
This is also used for internal purposes and should have no meaning for the user.
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