Volatility Surface

Demonstrates 3D perspective projection in the terminal using Braille canvas for high-resolution rendering.

To run this demo:

cargo run -p volatility-surface

What it shows

This example visualizes an implied volatility surface as an interactive 3D wireframe. It demonstrates:

• 3D-to-2D perspective projection with rotation matrices
• Braille canvas rendering for smooth curves (8x resolution vs blocks)
• Real-time animation and interactive controls

How it works

Objects further away appear smaller—that's perspective. The math is simple: divide x and y coordinates by distance. Add rotation matrices to spin the object in 3D space, and you can explore it from any angle.

The result: a 500-point surface rendered at 30fps using basic trigonometry and perspective division.

Controls

• Arrow Keys - Rotate the surface
• Z/X - Zoom in/out
• P - Cycle color palettes
• Space - Pause/resume
• Q - Quit