threejs Matrix3

threejs Matrix3

var matrix3_1 = new THREE.Matrix3();

 

 

var index1_new_x = t_matrix[0] * index1_x + t_matrix[3]*index1_y + t_matrix[6]*index1_z;
var index1_new_y = t_matrix[1] * index1_x + t_matrix[4]*index1_y + t_matrix[7]*index1_z;
var index1_new_z = t_matrix[2] * index1_x + t_matrix[5]*index1_y + t_matrix[8]*index1_z;
            

 

 

 

 

 

#############################