Реферат: Трехмерная графика Теория

return res;

}

Matrix operator * ( const Matrix& A, const Matrix& B )

{

Matrix res;

int j;

for ( int i = 0; i < 4; i++ )

for ( j = 0; j < 4; j++ ) {

double sum = 0;

for ( int k = 0; k < 4; k++ )

sum += A.x [i][k] * B.x [k][j];

res.x [i][j] = sum;

}

return res;

}

Matrix operator * ( const Matrix& A, double v )

{

Matrix res;

int j;

for ( int i = 0; i < 4; i++ )

for ( j = 0; j < 4; j++ )

res.x [i][j] = A.x [i][j] * v;

return res;

}

Vector operator * ( const Matrix& M, const Vector& v )

{

Vector res;

res.x = v.x * M.x [0][0] + v.y * M.x [1][0] + v.z * M.x [2][0] + M.x [3][0];

res.y = v.x * M.x [0][1] + v.y * M.x [1][1] + v.z * M.x [2][1] + M.x [3][1];