🚀 C-Programming-Practice

A collection of C projects exploring 3D math, matrix transformations, and SDL2 graphics.

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🧊 Project: Rotating Cube (Euler Angles)

This project renders a 3D wireframe cube using 1,200 points. It applies a complex rotation matrix (pitch, yaw, and roll) to every point in real-time.

🛠️ Installation & Setup

To fix SDL2/SDL.h missing errors, install the development headers:

🐧 Linux (Ubuntu/Debian/Mint)

sudo apt update && sudo apt install libsdl2-dev

🎩 Linux (Fedora/Arch)

• Fedora: sudo dnf install SDL2-devel
• Arch: sudo pacman -S sdl2

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🏗️ How to Compile

Because this project uses both SDL2 for graphics and math.h for rotation matrices, you must link both libraries:

cc -o cube cube.c -lm `sdl2-config --cflags --libs`

⚠️ Linker Warning:
If you see undefined reference to cos or DSO missing, ensure you have placed -lm at the end of your command. This tells the compiler to include the math library.

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📐 The Math Behind the Rotation

The cube rotates using a 3x3 rotation matrix for 3D space. It calculates the new position of each point using the Dot Product of the rotation matrix and the point's current vector:

• α (Alpha): Rotation around the Z-axis (Roll)
• β (Beta): Rotation around the Y-axis (Yaw)
• γ (Gamma): Rotation around the X-axis (Pitch)

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📅 Project Roadmap

• ✅ Setup Basic Rendering & SDL Window
• ✅ Implement 3D Point cloud
• ✅ Matrix Rotation (Euler Angles)
• 🚧 Perspective Projection (Coming Soon)
• 📅 Line Drawing/Wireframe (Planned)

Maintained by Luna