> For the complete documentation index, see [llms.txt](https://suyashs-organization-3.gitbook.io/csitlabs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://suyashs-organization-3.gitbook.io/csitlabs/3rd_semester/computer_graphics.md).

# Computer Graphics

* ## Windows

## How to add graphics.h in dev C++

1. Add header source files into the Dev C++ directory
   * First, download the header files from this [Google drive link](https://drive.google.com/file/d/1ULN_XcrbDkls2U2DlYkNM_yiua5h-_NI/view?usp=sharing) and extract the files.
   * It contains three files:
     * graphics.h
     * winbgim.h
     * libbgi.a.
   * You need to copy "graphics.h" and "winbgim.h" into include the directory of Dev-Cpp program resource files. The exact directory address is –
     * C:\Program Files (x86)\Dev-Cpp\MinGW64\include
   * Next, copy “libbgi.a” to lib folder, which should be inside MinGW64. The directory address is –
     * C:\Program Files (x86)\Dev-Cpp\MinGW64\lib
2. Change compiler suit in Dev C++
   * First open Dev C++ appliaction.
   * On the right side of the toolbar, you will have the drop-down menu to select the desired compiler suit.
   * Set it to TDM - GCC 4.9.2 32-bit release.
3. Configure required linkers for graphics
   * On Dev, C++, look for the Tool option on the top menu.
   * Expand tools and select Compiler Options.
   * You should arrive on the general tab of the compiler options window.
   * Ensure the “Add the following commands when calling the linker” check box is selected.
   * Then add these linkers in the input box – (just copy and paste this line)

     `-libgcc -lbgi -lgdi32 -lcomdlg32 -luuid -loleaut32 -lole32`
   * Then click on OK to save.

     [Reference](https://gamespec.tech/how-to-add-graphics-in-dev-c/)

* ## Linux

Installation/verification for openGL

OpenGL comes with the X11 installation, to verify, look for the following files:

* header file: /usr/include/GL/glut.h
* If OpenGL and/or GLUT is not installed on your system, you can install both with: Ubuntu: `sudo apt-get install freeglut3-dev`

  or

  Fedora/RedHat: `sudo yum install freeglut-devel`

  which should install all the dependent packages, including OpenGL itself. You must have sudo/administrator privileges.
* In your OpenGL source files, include the following line:

  `#include <GL/glut.h>`

You don't need to include gl.h and glu.h, as they are already included in glut.h.

* To make a GLUT application on the command line, use the following linker options:

  `-lGL -lGLU -lglut`

## Programs

1. ## [Scan Conversion Algorithm](/csitlabs/3rd_semester/computer_graphics/scan_conversion_algorithm.md)

   ```readme
   The process of representing continuous graphics object as a collection of discrete pixels is known as scan conversion.
   ```

   * Scan Converting a Point and a straight Line:
     * [Digital Analyzer Algorithm](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/Scan_Conversion_Algorithm/DDA.cpp)
     * [Bresenham's Line Drawing Algorithm](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/Scan_Conversion_Algorithm/Bresenham.cpp)
   * Scan Converting Circle and Ellipse:
     * [Mid Point Circle Algorithm](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/Scan_Conversion_Algorithm/midpoint-circle.cpp)
     * [Bresenham Circle Algorithm](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/Scan_Conversion_Algorithm/bresenham-circle.cpp)
     * [Ellipse Algorithm](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/Scan_Conversion_Algorithm/ellipse.cpp)
2. ## [2D Geometric Transformations](/csitlabs/3rd_semester/computer_graphics/2d_geometric_transformations.md)
   * [Simulation of 2D Transformation](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/2D_Geometric_transformations/menuDrivenAll.cpp)
   * [Rotation](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/2D_Geometric_transformations/rotation.cpp)
   * [Scaling](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/2D_Geometric_transformations/scaling.cpp)
   * [Shearing](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/2D_Geometric_transformations/shearing.cpp)
   * [Translation](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/2D_Geometric_transformations/translation.cpp)
   * [Reflection](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/2D_Geometric_transformations/reflection.cpp)
   * [Cohen Sutherland line clipping algorithm](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/2D_Geometric_transformations/Cohen_Sutherland_Line_Clipping_Algorithm.cpp)
   * [Window Viewport Mapping](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/2D_Geometric_transformations/window_viewport_mapping.cpp)
   * [Composite Transformation](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/2D_Geometric_transformations/composite_transformation.cpp)
3. ## [3D Geometric transformation](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/3D_Geometric_transformation/README.md)
   * [Menu driven program](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/3D_Geometric_transformation/3Dmenu_driven.cpp)
   * [Moving Car](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/3D_Geometric_transformation/moving_car.cpp)
4. ## [3D Objects Representation](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/3D_object_representation/README.md)
   * [Beizer Curve](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/3D_object_representation/beizer_curve.cpp)
   * [Sphere](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/3D_object_representation/sphere.cpp)
   * [Polygon Table](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/3D_object_representation/polygon_table.cpp)
5. ## [Visible Surface Detection](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/Visible_Surface_Detections/README.md)
   * [Implementaion of rotation of 3D cube](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/Visible_Surface_Detections/rotation_3D_cube.cpp)
6. ## [Introduction to OpenGL](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/OpenGL/README.md)

   *copy the files and make new project for dev for openGL programming*

   * [Event Driven Programming](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/OpenGL/event_driven.cpp)
   * [Point](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/OpenGL/point.cpp)
   * [Line](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/OpenGL/line.cpp)
   * [Drawing 3D objects](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/OpenGL/colorCube.cpp)
   * [Polygon](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/OpenGL/polygon.cpp)
     * [Triangle](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/OpenGL/triangle.cpp)
     * [Rectangle](https://github.com/sthsuyash/CSIT_Labs/blob/main/3rd_Semester/Computer_Graphics/OpenGL/rectangle.cpp)