Moving objects independently of each other

OpenGL OpenGL: Basic Coding
1

Given a number of objects how would you move them independently og each other

2

glLoadIdentity();
glTranslatef(x1, y1, z1);
/* Draw first object /
glLoadIdentity();
glTranslatef(x2, y2, z2);
/ Draw second object /
glLoadIdentity();
glTranslatef(x3, y3, z3);
/ Draw third object */

x1, y1, z1, x2 … are the coordanites of the first second and third objects. Just change the coordanites of an object and only it will move.

(Note: This example code doesn’t implement rotation)

3

Another way to do it:

glPushMatrix();
glTransatef(x1, y1, z1);
/* Draw object 1 /
glPopMatrix();
glPushMatrix();
glTransatef(x2, y2, z2);
/ Draw object 2 /
glPopMatrix();
glPushMatrix();
glTransatef(x3, y3, z3);
/ Draw object 3 */
glPopMatrix();

This way it keeps any modifications done to the modelview matrix before the drawing.