How to move Camera3D in screen space without RenderTexture?

[littleangryork]

I'm trying to figure out how to move a 3D camera in 2D screen space without relying on the RenderTexture feature. I want to adjust the cube's screen position without altering its appearance. I'd like to use a perspective projection. I'm avoiding RenderTexture because if I have to define its origin, I'd need to double the drawing size to fit it within the window. ( Sorry if the GPT translation is not accurate )

Example code:

#include <raylib.h>

#define TITLE  "TEST"
#define WIDTH  800
#define HEIGHT 600

int main( void ) {

    InitWindow( WIDTH, HEIGHT, TITLE );

    Camera cam = {
        .projection = CAMERA_PERSPECTIVE,
        .position = { .z = -2, .y = 1. },
        .up = { .y = 1 },
        .fovy = 90,
    };

    SetTargetFPS( 60 );
    while(!WindowShouldClose()) {
    
        UpdateCamera( &cam, CAMERA_ORBITAL );

        BeginDrawing();
        ClearBackground( WHITE );

        BeginMode3D( cam );
            DrawCube( ( Vector3 ){0}, 1, 1, 1, GRAY );
            DrawCubeWires( ( Vector3 ){0}, 1, 1, 1, LIGHTGRAY );
        EndMode3D();

        EndDrawing();

    }

    return 0;
}