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Creates a set of three lines 5 grid units in length, in 3 different colors, representing each coordinate axis in virtual world space, centered at the origin.

fustrum

– The user can incrementally size up the model by pressing ‘U’ to scale-up and ‘J’ to scale-down. Each key press should result in a small size change.
– The user can control the model position and orientation using keyboard input, i.e., A → move left, D → move right, W → move up, S → move down, a → rotate left 5 degrees about Y axis, d → rotate right 5 degrees about Y axis. You may add other rotations about other axis, if you want.

Creates a 100x100 square grid (ground surface) in the XZ plane centered at the origin.

– The world orientation is changed by using keyboard input i.e. left arrow → Rx,
right arrow → R-x, up arrow → Ry, down arrow → R-y. (Rx denotes a small anticlockwise rotation about positive x axis, R-x about negative x axis, etc.) Pressing
“Home” button should reset to the initial world position and orientation.

The user can change rendering mode for the model, i.e. points, lines, triangles based on keyboard input, namely, key ‘P’ for points, key ‘L’ for lines, key ‘T’ for triangles.

Need global illumination

https://learnopengl.com/Lighting/Basic-Lighting

– The user can pan and tilt the camera as follows:
While right button is pressed → use mouse movement in x direction to pan;
While middle button is pressed → use mouse movement in y direction to tilt.
– The user can zoom in and out of the scene:
While left button is pressed → use mouse movement to move into/out of the scene.

N5, J5, H6, O8, R1