Changing Camera Position

OpenGL OpenGL: Basic Coding
1

Hello, I am a beginner and I am trying to create a 3D room.
What I am doing is that I am creating a 3D cube and then trying to changing the camera position inside the cube so that it appears as a room.

My code for the cube :

glBegin(GL_QUADS); // Draw The Cube Using quads
glVertex3f(1.0f, 1.0f, -1.0f); // Top Right Of The Quad (Top)
glVertex3f(-1.0f, 1.0f, -1.0f); // Top Left Of The Quad (Top)
glVertex3f(-1.0f, 1.0f, 1.0f); // Bottom Left Of The Quad (Top)
glVertex3f(1.0f, 1.0f, 1.0f); // Bottom Right Of The Quad (Top)
glVertex3f(1.0f, -1.0f, 1.0f); // Top Right Of The Quad (Bottom)
glVertex3f(-1.0f, -1.0f, 1.0f); // Top Left Of The Quad (Bottom)
glVertex3f(-1.0f, -1.0f, -1.0f); // Bottom Left Of The Quad (Bottom)
glVertex3f(1.0f, -1.0f, -1.0f); // Bottom Right Of The Quad (Bottom)
glVertex3f(1.0f, 1.0f, 1.0f); // Top Right Of The Quad (Front)
glVertex3f(-1.0f, 1.0f, 1.0f); // Top Left Of The Quad (Front)
glVertex3f(-1.0f, -1.0f, 1.0f); // Bottom Left Of The Quad (Front)
glVertex3f(1.0f, -1.0f, 1.0f); // Bottom Right Of The Quad (Front)
glVertex3f(1.0f, -1.0f, -1.0f); // Top Right Of The Quad (Back)
glVertex3f(-1.0f, -1.0f, -1.0f); // Top Left Of The Quad (Back)
glVertex3f(-1.0f, 1.0f, -1.0f); // Bottom Left Of The Quad (Back)
glVertex3f(1.0f, 1.0f, -1.0f); // Bottom Right Of The Quad (Back)
glVertex3f(-1.0f, 1.0f, 1.0f); // Top Right Of The Quad (Left)
glVertex3f(-1.0f, 1.0f, -1.0f); // Top Left Of The Quad (Left)
glVertex3f(-1.0f, -1.0f, -1.0f); // Bottom Left Of The Quad (Left)
glVertex3f(-1.0f, -1.0f, 1.0f); // Bottom Right Of The Quad (Left)
glVertex3f(1.0f, 1.0f, -1.0f); // Top Right Of The Quad (Right)
glVertex3f(1.0f, 1.0f, 1.0f); // Top Left Of The Quad (Right)
glVertex3f(1.0f, -1.0f, 1.0f); // Bottom Left Of The Quad (Right)
glVertex3f(1.0f, -1.0f, -1.0f); // Bottom Right Of The Quad (Right)
glEnd();

Now when I am trying to change the camera position using : to gluLookAt(0.5,0.5,0.5,0.0,0.0,0.0,0.0,1.0,0.0) it is just giving me an upper view of the cube.
How can I possibly view the inside of the cube?

2

good , work hard. I have to admire your assiduous spirite. I have never intended to type so many…
just exam those vertices, too many repeat, why don’t you simplify them by way of index?
vertex point array can do the trick.

3

Well, first of all, you should stop using the fixed function pipeline as anything you’ll learn from it will be pretty outdated from the start. gluLookAt being a fine example.
With that said, you really need to think about what you’re trying to achieve here: gluLookAt(0.5,0.5,0.5,0.0,0.0.0 … translation: move to the side, up and back a bit (+Z is towards you - Right-Handed System).
The cube, being in the center, kinda nullifies the need to move on the X and Y.
To get the “room” effect, you need to move quite a bit back, e.g. 0.95 and adjust the FoV accordingly (the first value of gluPerspective to ~60+ I guess).

Do this, and you will see … probably nothing, if you are using standard stuff like culling, lighting, etc. So … flip normals, cull mode and the rest as needed.