Here is a C graphics program for bouncing ball animation using graphics.h header file. In this program, we will draw a red color ball move it vertically up and down like a bouncing ball. We will use below mentioned functions in this program.
| Function | Description |
|---|---|
| initgraph | It initializes the graphics system by loading the passed graphics driver then changing the system into graphics mode. |
| getmaxx | It returns the maximum X coordinate in current graphics mode and driver. |
| setcolor | It changes the current drawing colour. Default colour is white. Each color is assigned a number, like BLACK is 0 and RED is 4. Here we are using colour constants defined inside graphics.h header file. |
| setfillstyle | It sets the current fill pattern and fill color. |
| circle | It draws a circle with radius r and centre at (x, y). |
| floodfill | It is used to fill a closed area with current fill pattern and fill color. It takes any point inside closed area and color of the boundary as input. |
| cleardevice | It clears the screen, and sets current position to (0, 0). |
| kbhit | It is used to determine whether a key is pressed or not. It returns a non-zero value if a key is pressed otherwise zero. |
| delay | It is used to suspend execution of a program for a M milliseconds. |
| closegraph | It unloads the graphics drivers and sets the screen back to text mode. |
C program for bouncing ball graphics animation
In this program, we first draw a red color ball on screen having center at (x, y) and then erases it using cleardevice function. We again draw this ball at center (x, y + 5), or (x, y - 5) depending upon whether ball is moving down or up. This will look like a bouncing ball. We will repeat above steps until user press any key on keyboard.
#include <stdio.h>
#include <graphics.h>
#include <dos.h>
int main() {
int gd = DETECT, gm;
int i, x, y, flag=0;
initgraph(&gd, &gm, "C:\\TC\\BGI");
/* get mid positions in x and y-axis */
x = getmaxx()/2;
y = 30;
while (!kbhit()) {
if(y >= getmaxy()-30 || y <= 30)
flag = !flag;
/* draws the gray board */
setcolor(RED);
setfillstyle(SOLID_FILL, RED);
circle(x, y, 30);
floodfill(x, y, RED);
/* delay for 50 milli seconds */
delay(50);
/* clears screen */
cleardevice();
if(flag){
y = y + 5;
} else {
y = y - 5;
}
}
closegraph();
return 0;
}
Output
Here is the screenshot of bouncing ball.
Conclusion
This tutorial has guided you through the exhilarating process of creating a bouncing ball animation using Turbo C graphics. By exploring fundamental graphics functions and animation principles, you've gained insights into the dynamic world of visual programming.
As you witnessed, graphics programming allows for creative expression and the development of visually appealing applications. The animation of a bouncing ball serves as a starting point for more intricate and engaging projects. Consider experimenting with additional elements, such as multiple bouncing balls, diverse trajectories, or even integrating user interactions.
Understanding the mechanics of animation, including redraw loops, variable control, and collision detection, is crucial for advancing your graphics programming skills. Turbo C, although a classic platform, provides a solid environment for honing these skills, and the principles you've learned can be applied to more modern graphics libraries and frameworks.
As you continue your journey into graphics programming, explore advanced concepts like sprite animations, user-driven interactions, and real-time rendering. Additionally, consider transitioning to contemporary programming environments and languages to harness the latest graphical capabilities and industry trends.
Remember, the beauty of graphics programming lies in its limitless possibilities. Whether you're crafting entertaining games, dynamic simulations, or interactive user interfaces, the skills acquired from this tutorial lay the groundwork for your exploration of the captivating world of visual programming. Embrace your newfound knowledge, and let your creativity flourish in the realm of animated graphics!
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