source: trunk/VUT/GtpVisibilityPreprocessor/src/Tetrahedron3.cpp @ 544

#include "Tetrahedron3.h"


float Tetrahedron3::GetArea() const
{
        float area = 0;
        for (int i = 0; i < 4; ++ i)
                area += GetTriangle(i).GetArea();

        return area;
}


float Tetrahedron3::GetVolume() const
{
        const Vector3 a = mVertices[2] - mVertices[1];
        const Vector3 b = mVertices[3] - mVertices[1];
        const Vector3 c = mVertices[4] - mVertices[1];

        return (1.0f / 6.0f) * fabs(DotProd(a, CrossProd(b, c)));
}


bool Tetrahedron3::Valid() const
{
        return true;
}