OpenGL Project (C++ + GLUT)
This project is a simple 2D graphics application made using:
- C++
- OpenGL
- GLUT (OpenGL Utility Toolkit)
The main objectives of the project are:
- To understand OpenGL graphics programming
- To implement 2D graphics using C++
- To create animations using timer functions
- To learn keyboard interaction handling
- To design multiple graphical scenes
1. C++
Used for implementing program logic and graphics functions.
2. OpenGL
Used for rendering graphics objects.
3. GLUT
Used for:
- Window handling
- Keyboard interaction
- Timer functions
- Display management
- The program starts with the introduction screen.
-
User presses
Nto move between scenes. - Gotham city scene displays animated moon movement.
- Batman scene displays Batman standing on a building.
- Logo scene displays rotating Batman logo.
- Thank you screen is displayed at the end.
Scene 1
College Intro Screen
Scene 2
Animated Gotham City
Scene 3
Batman Standing on Building
Scene 4
Rotating Batman Logo
Scene 5
Thank You Screen
- Simple and easy to understand
- Demonstrates OpenGL basics
- Includes animation and transformations
- Interactive graphics application
- Useful for learning computer graphics
- Uses only 2D graphics
- Basic Batman design
- No sound effects
- Limited animation
Headaer Files used in for desing and implementation of BATMAN OPENGL COMPUTER GRAPHICS PROJECT USING C++ are –
1.#include
2. #include
Needed for circles and rotation.
3. #include
Used for:
Needed to print text character by character.
Global Variables :
scene is used a global varaiable for Controls current screen. with keyboard functions assigned for user to shift between the screense
scene
Controls current screen.
The program displays:
- College intro screen
- Gotham city animation
- Batman standing on building
- Rotating Batman logo
- Thank you screen
| Value | Scene |
|---|---|
| 0 | Intro |
| 1 | Gotham City |
| 2 | Batman |
| 3 | Logo |
| 4 | Thank You |
Changes:
- true → false
- false → true
Used for blinking text.
Drawing Circle
void drawCircle(float cx, float cy, float r)
Used for:
Creates city buildings using rectangles.
and similarly other polygons are use to create building logo and batman body etc.
Timer Function (Animation)
void timer(int)
{
moonX += 0.002f;
if (moonX > 1.2f)
moonX = -1.2f;
logoAngle += 2.0f;
if (logoAngle > 360)
logoAngle = 0;
blink = !blink;
glutPostRedisplay();
glutTimerFunc(30, timer, 0);
}
glutTimerFunc(30, timer, 0);
Calls timer again every 30 milliseconds.
This creates animation.
IMPORTANT OPENGL FUNCTIONS
| Function | Purpose |
|---|---|
| glBegin() | Start drawing |
| glEnd() | End drawing |
| glVertex2f() | Define point |
| glColor3f() | Set color |
| glClear() | Clear screen |
| glFlush() | Show drawing |
| glRotatef() | Rotate object |
| glTranslatef() | Move object |
| glPushMatrix() | Save position |
| glPopMatrix() | Restore position |
Keyboard Function void keyboard(unsigned char key, int x, int y) is used as user interations with scence as said above –
Key – Interaction
‘n’ – Next Scene
‘p’ – Previous Scene
ESC -> Exit
The project successfully demonstrates the implementation of computer graphics concepts using OpenGL and C++.
It helps in understanding:
- Graphics rendering
- Animation
- Scene management
- User interaction
The project is useful for beginners to learn OpenGL programming concepts practically.
Ideas
- Batman walking
- Moving cape
- Flashing bat signal
- Rain effect
- Flying bats
Use Batman music.
Windows:
Draw small white circles.
Creates realistic night sky.
Instead of plain background:
- Dark blue top
- Black bottom
Looks professional.
Add:
- Arms
- Gloves
- Belt
- Boots
- Better face
Currently only few buildings.
Add:
- More towers
- Antennas
- Windows with blinking lights
Current:
Better:
Then:
Benefits:
- Smooth animation
- No flickering
Example:
- Click to switch scenes
- Click logo to rotate faster
Press:
Advanced improvement:
- 3D Batman logo
- Lighting
- Shadows
- Camera movement
If teacher asks:
“How does animation work?”
Answer:
Animation is created using
glutTimerFunc().
It repeatedly updates variables like moon position and logo rotation angle, then redraws the scene continuously.
If teacher asks:
“How is Batman drawn?”
Answer:
Batman is created using basic OpenGL primitives such as polygons, triangles, and circles.
If teacher asks:
“How does scene switching work?”
Answer:
A global variable called
scenestores the current scene number. Keyboard input changes the value, and the display function draws different scenes accordingly.
Source Code Downloads
BATMAN OPENGL COMPUTER GRAPHICS PROJECT USING C++ Free Source code download
