Create house and perform operations
Write a C Program to create house and perform operations in Graphics. Here’s simple C Program to create house and perform operations in Graphics in C Programming Language.
C Program to create a house like figure and perform the following operations.
a. Scaling about the origin followed by translation.
b. Scaling with reference to an arbitrary point.
c. Reflect about the line y = mx + c.
Below is the source code for C Program to create house and perform operations in Graphics which is successfully compiled and run on Windows System to produce desired output as shown below :
SOURCE CODE : :
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/* C Program to create house and perform operations in Graphics */ #include <stdio.h> #include <graphics.h> #include <stdlib.h> #include <math.h> #include <conio.h> void reset (int h[][2]) { int val[9][2] = { { 50, 50 },{ 75, 50 },{ 75, 75 },{ 100, 75 }, { 100, 50 },{ 125, 50 },{ 125, 100 },{ 87, 125 },{ 50, 100 } }; int i; for (i=0; i<9; i++) { h[i][0] = val[i][0]-50; h[i][1] = val[i][1]-50; } } void draw (int h[][2]) { int i; setlinestyle (DOTTED_LINE, 0, 1); line (320, 0, 320, 480); line (0, 240, 640, 240); setlinestyle (SOLID_LINE, 0, 1); for (i=0; i<8; i++) line (320+h[i][0], 240-h[i][1], 320+h[i+1][0], 240-h[i+1][1]); line (320+h[0][0], 240-h[0][1], 320+h[8][0], 240-h[8][1]); } void rotate (int h[][2], float angle) { int i; for (i=0; i<9; i++) { int xnew, ynew; xnew = h[i][0] * cos (angle) - h[i][1] * sin (angle); ynew = h[i][0] * sin (angle) + h[i][1] * cos (angle); h[i][0] = xnew; h[i][1] = ynew; } } void scale (int h[][2], int sx, int sy) { int i; for (i=0; i<9; i++) { h[i][0] *= sx; h[i][1] *= sy; } } void translate (int h[][2], int dx, int dy) { int i; for (i=0; i<9; i++) { h[i][0] += dx; h[i][1] += dy; } } void reflect (int h[][2], int m, int c) { int i; float angle; for (i=0; i<9; i++) h[i][1] -= c; angle = M_PI/2 - atan (m); rotate (h, angle); for (i=0; i<9; i++) h[i][0] = -h[i][0]; angle = -angle; rotate (h, angle); for (i=0; i<9; i++) h[i][1] += c; } void ini() { int gd=DETECT,gm; initgraph(&gd,&gm,"..\\bgi"); } void dini() { getch(); closegraph(); } void main() { int h[9][2],sx,sy,x,y,m,c,choice; do { clrscr(); printf("1. Scaling about the origin.\n"); printf("2. Scaling about an arbitrary point.\n"); printf("3. Reflection about the line y = mx + c.\n"); printf("4. Exit\n"); printf("Enter the choice: "); scanf("%d",&choice); switch(choice) { case 1: printf ("Enter the x- and y-scaling factors: "); scanf ("%d%d", &sx, &sy); ini(); reset (h); draw (h);getch(); scale (h, sx, sy); cleardevice(); draw (h); dini(); break; case 2: printf ("Enter the x- and y-scaling factors: "); scanf ("%d%d", &sx, &sy); printf ("Enter the x- and y-coordinates of the point: "); scanf ("%d%d", &x, &y); ini(); reset (h); translate (h, x, y);// Go to arbitrary point draw(h); getch();//Show its arbitrary position cleardevice(); translate(h,-x,-y);//Take it back to origin draw(h); getch(); cleardevice(); scale (h, sx, sy);//Now Scale it draw(h); getch(); translate (h, x, y);//Back to Arbitrary point cleardevice(); draw (h); putpixel (320+x, 240-y, WHITE); dini(); break; case 3: printf ("Enter the values of m and c: "); scanf ("%d%d", &m, &c); ini(); reset (h); draw (h); getch(); reflect (h, m, c); cleardevice(); draw (h); dini(); break; case 4: exit(0); } }while(choice!=4); } |
Above is the source code for C Program to create house and perform operations in Graphics which is successfully compiled and run on Windows System.The Output of the program is shown above .
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