Merge pull request #238 from rahulkumaran/rahulkumaran-graphics_algo

C program for Car Animation

Author: prateekiiest

Graphics Algos/Car Animation/README.md

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+The car.c file is a program which shows an animation of a moving car.
+It has been drawn using the line function in the graphics library.
+
+ line(x1,y1,x2,y2)
+ where, x1,y1 ---- starting points of line
+ and x2,y2 ------- ending points of the line.
+ 
+The animation takes place by the concept of translation.
+We've put the car in a for loop incrementing the values of x co-ordinates of all the line functions by i
+
+The final out put will look this way!
+
+![screenshot from 2017-12-16 15-52-31](https://user-images.githubusercontent.com/26206171/34069730-d0f448d6-e27c-11e7-9a34-17603028a4ec.png)
+![screenshot from 2017-12-16 15-52-35](https://user-images.githubusercontent.com/26206171/34069731-d5130948-e27c-11e7-882e-2d9ca7c00f0b.png)
+![screenshot from 2017-12-16 15-52-37](https://user-images.githubusercontent.com/26206171/34069732-d5d02c76-e27c-11e7-99ba-7138d97e4877.png)
+![screenshot from 2017-12-16 15-52-40](https://user-images.githubusercontent.com/26206171/34069733-d80b1ae6-e27c-11e7-96b5-715bf9601b95.png)

Graphics Algos/Car Animation/car.c

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+#include <stdio.h>
+#include <graphics.h>
+ 
+int main()
+{
+ int gd = DETECT, gm;
+ int i, maxx, midy;
+ 
+ /* initialize graphic mode */
+ initgraph(&gd, &gm, "NULL");
+ /* maximum pixel in horizontal axis */
+ maxx = getmaxx();
+ /* mid pixel in vertical axis */
+ midy = getmaxy()/2;
+ 
+ for (i=0; i < maxx-150; i=i+5)/* loop is run for showing the animation */
+ {
+ /* clears screen */
+ cleardevice();
+ 
+ /* draw a white road */
+ setcolor(WHITE);/* color of the road */
+ line(0, midy + 37, maxx, midy + 37);
+ 
+ /* Draw Car */
+ setcolor(YELLOW);/* color of the car body */
+
+ /* car body */
+ line(i, midy + 23, i, midy);/* draws the left most line parallel to y-axis */
+ line(i, midy, 40 + i, midy - 20);
+ line(40 + i, midy - 20, 80 + i, midy - 20);/* draws the roof of the car*/
+ line(80 + i, midy - 20, 100 + i, midy);/* draws the front mirror part of the car */
+ line(100 + i, midy, 120 + i, midy);
+ line(120 + i, midy, 120 + i, midy + 23);
+ line(0 + i, midy + 23, 18 + i, midy + 23);
+ arc(30 + i, midy + 23, 0, 180, 12);/* draws the arc to accomodate the wheels */
+ line(42 + i, midy + 23, 78 + i, midy + 23);
+ arc(90 + i, midy + 23, 0, 180, 12);/* draws the arc to accomodate the wheels */
+ line(102 + i, midy + 23, 120 + i, midy + 23);
+/* car body ends */
+
+/* Draw Windows */
+/* left window */
+ line(28 + i, midy, 43 + i, midy - 15);/* left part of left window */
+ line(43 + i, midy - 15, 57 + i, midy - 15);/* roof of the left window */
+ line(57 + i, midy - 15, 57 + i, midy);/* right part of left window */
+ line(57 + i, midy, 28 + i, midy);/* bottom part of the left window */
+/* left window ends */
+
+/* right window */
+ line(62 + i, midy - 15, 77 + i, midy - 15);/* left part of right window */
+ line(77 + i, midy - 15, 92 + i, midy);/* roof of the rightt window */
+ line(92 + i, midy, 62 + i, midy);/* right part of right window */
+ line(62 + i, midy, 62 + i, midy - 15);/* bottom part of the right window */
+/* right window ends */
+
+ floodfill(5 + i, midy + 22, YELLOW);/* fills the whole car body with yellow color */
+
+ setcolor(BLUE);/* color of the wheels */
+ /* Draw Wheels */
+ circle(30 + i, midy + 25, 9);
+ circle(90 + i, midy + 25, 9);
+ floodfill(30 + i, midy + 25, BLUE);/* fills the left wheel with blue color */
+ floodfill(90 + i, midy + 25, BLUE);/* fills the right wheel with blue color */
+
+ /* Add delay of 0.1 milli seconds */
+ delay(100);/* to observe the animation */
+ }
+ 
+ getch();
+ closegraph();
+ return 0;
+}