I wrote program which generate this picture
and the code for axial is
"
glLineWidth(3.0f);
glBegin (GL_LINES);
glColor3f (1.0f, 0.0f, 0.0f); //red green blue
glVertex3f (0.0f, 0.0f,0.0f);
glVertex3f (0.0f, 200.0f,0.0f);
//red line Y axis
glColor3f (0.0f, 1.0f, 0.0f);
glVertex3f (0.0f, 0.0f,0.0f);
glVertex3f (200.0f, 0.0f,0.0f);
//green line X axis
glColor3f (1.0f, 1.0f, 1.0f);
glVertex3f (0.0f, 0.0f,0.0f);
glVertex3f (0.0f, 0.0f,200.0f);
//blue line Z axis
glEnd ();
"
why it’s looke like left-handle coordinate thus opengl use right coordinate system?