OpenGL Paint Application

This project is an interactive paint application inspired by Microsoft Paint, written in C++ and made with OpenGL. It has a simple UI and provides essential tools and features for painting.

Drawing with shapes and scribbles.

Features

• Paintbrush tool (draw points as a scribble).
• Eraser tool (delete shapes and scribbles).
• Screen clearing tool (delete all shapes and scribbles).
• RGB color picker.
• Four shape tools.
• Selector tool (ability to select a shape or scribble by clicking on it).
• Ability to bring the selected shape or scribble to the front.
• Ability to send the selected shape or scribble to the back.
• Ability to move the selected shape or scribble by dragging.
• Ability to change the color of the selected shape or scribble.

Setup

1. Install Visual Studio and configure it for desktop development with C++.
2. Download FreeGLUT 3.0.0 for Microsoft Visual C++.
3. Download the stb_image.h library.
4. Create a new project configured for C++ and your platform in Visual Studio.
5. Make a dependencies folder in your project's folder.
6. In the dependencies folder, copy and paste the extracted freeglut folder inside.
7. In dependencies, create a new folder called stb. Inside stb, create a new folder called include. Inside include, copy & paste the stb_image.h file inside.
8. Navigate to the project's properties and go to "VC++ Directories." Inside "Include Directories," add the directory location of freeglut's include folder. Do the same for stb's include folder.
9. Next, inside "Library Directories," add the directory location of freeglut's lib folder's designated platform (Win32 or x64).
10. In "Linker," go to "Additional Dependencies" and add freeglut.lib.
11. Then, in "Build Events" → "Post-Build Events," add the following command in the "Command Line" section:
    copy "$(SolutionDir)dependencies\freeglut\bin\$(Platform)\freeglut.dll" "$(OutDir)"
12. Finally, add the necessary code files and assets to "Source Files."

(For more help and clarification, please refer to the following tutorials listed in the "Credits.")

Credits

The application leverages the FreeGLUT library to create the window, initialize OpenGL contexts, render graphics, and handle user input events. The stb_image.h library loads images from local files into the program. The following tutorials on setting up a FreeGLUT project in Visual Studio and the installation process for stb_image.h were extremely valuable in the project setup process.

Side Notes

This program leverages pointers and dynamic memory allocation to manage data structures and prevent memory leaks to improve application performance.