Method inverseMatrix

source/common/utility/matrix.cpp:687–710

}

bool VSMatrix::inverseMatrix(VSMatrix &result)
{
	// Calculate mat4 determinant
	FLOATTYPE det = mat4Determinant(mMatrix);

	// Inverse unknown when determinant is close to zero
	if (fabs(det) < 1e-15)
	{
		for (int i = 0; i < 16; i++)
			result.mMatrix[i] = FLOATTYPE(0.0);
		return false;
	}
	else
	{
		mat4Adjoint(mMatrix, result.mMatrix);

		FLOATTYPE invDet = FLOATTYPE(1.0) / det;
		for (int i = 0; i < 16; i++)
		{
			result.mMatrix[i] = result.mMatrix[i] * invDet;
		}
	}
	return true;
}