Understanding of OpenGL global coordinates and local coordinates

void display(void)
{
   glClear (GL_COLOR_BUFFER_BIT);
   glColor3f (1.0, 1.0, 1.0);

   glPushMatrix();
   glutWireSphere(1.0, 10, 10);   /* draw sun */
//   glRotatef ((GLfloat) year, 0.0, 1.0, 0.0);
   glTranslatef (2.0, 0.0, 0.0);
   glRotatef ((GLfloat) day, 0.0, 1.0, 0.0);
   glutWireSphere(0.2, 5, 5);    /* draw smaller planet */
   glPopMatrix();
   glutSwapBuffers();
}

Intelligent Recommendation

World coordinates and local coordinates in Unity

I have a student, just in contact with Unity3D, if you have a place where you understand, you will also hope that all the gods don't enlighten it ~ Private vector3 _Vec3targetscreenspace; // Target ob...

UE4 local coordinates and world coordinates

Add the code to the Tick function, and you can see the changes in Actor in world coordinates and local coordinates....

Qt+OpenGL - 3D coordinates to 2D coordinates

Principle introduction：https://learnopengl-cn.github.io/01%20Getting%20started/08%20Coordinate%20Systems/ Code In order to get the coordinates of the vertices in the model displayed in the wind...

OpenGL vertex coordinates and sampler2D texture coordinates

When using non-fixed pipelines for texture rendering, the mapping relationship between texture and vertex coordinates is often used. Here, the two-dimensional texture coordinate mapping is introduced ...

OpenGL real coordinates converted to projection coordinates

...