README.md

# C++ Shape Drawer

Advanced shape drawing application using C++ and Raylib graphics library. Create circles, rectangles, triangles, and complex patterns with ease.

## Project Details
- **Title**: C++ Shape Drawer
- **Author**: Molla Samser (Founder of RSK World)
- **Designer & Tester**: Rima Khatun
- **Website**: [rskworld.in](https://rskworld.in)
- **Year**: 2026

## Features
- **Multiple Shape Types**: Circle, Rectangle, Triangle, Star, and **n-sided Polygons**.
- **Transformation Tools**: Rotate and Scale any shape on the canvas.
- **Project Persistence**: **Save** (K) and **Load** (L) your entire drawing project.
- **Layer Management**: Control the Z-order with **Bring to Front** and **Send to Back**.
- **Transparency Control**: Adjust the **Alpha** channel of any shape for layering effects.
- **Drag & Drop**: Select and move shapes with your mouse.
- **Color Customization**: Multiple colors (Red, Green, Blue, Yellow, Purple).
- **Pattern Generation**: Auto-generate spirals and grids.
- **Export Options**: Save your canvas to a PNG file.
- **Interactive Controls**: Intuitive keyboard and mouse controls.
- **Undo Functionality**: Quickly remove the last drawn shape.

## Controls
- **Left Click**: Place current shape OR Drag an existing shape to move it.
- **Keys 1, 2, 3, 4, 5**: Switch between Circle, Rectangle, Triangle, Star, and **Polygon**.
- **Keys Q / E**: Rotate the hovered/selected shape.
- **Keys + / - OR Mouse Wheel**: Scale the hovered/selected shape.
- **Key T + Arrows / Wheel**: Adjust Transparency (Alpha) of selected shape.
- **PgUp / PgDn**: Change layer order (Bring to Front / Send to Back).
- **Key K / L**: Save / Load project state.
- **Up / Down (Polygon Mode)**: Change the number of sides.
- **Keys R, G, B, Y, P**: Change current color.
- **Key F**: Toggle Fill mode (Filled vs Outline).
- **Key Z**: Undo last shape.
- **Key C**: Clear canvas.
- **Key E**: Export canvas to `cpp_shape_drawer_export.png`.

## Technologies
- **C++17**: Modern C++ standards.
- **Raylib**: Simple and easy-to-use graphics library.
- **OOP**: Object-Oriented design with polymorphism.
- **STL**: Use of `std::vector` and `std::unique_ptr`.

## How to Build
1. Install [Raylib](https://www.raylib.com/).
2. Install [CMake](https://cmake.org/).
3. Clone or download this project.
4. Run the following commands:
```bash
mkdir build
cd build
cmake ..
cmake --build .
```
5. Run the generated executable.

## License
This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

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