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2D Shearing

#include <stdio.h> #include <stdlib.h> #include<graphics.h> #include<conio.h> #include<math.h> void draw2d(int,int [],int [],int,int); void main() { int gd=DETECT,gm; int x[20],y[20],x1[20],y1[20],tx=0,ty=0,i,fs,a; initgraph(&gd,&gm,""); printf("No of sides : "); scanf("%d",&fs); printf("Co-ordinates : "); for(i=0;i<fs;i++) { printf("(x%d,y%d)",i,i); scanf("%d%d",&x[i],&y[i]); } draw2d(fs,x,y,tx,ty); printf("translation (x,y) : "); scanf("%d%d",&tx,&ty); while(1) { clrscr(); cleardevice(); printf("1. X Shear\n\n2. Y Shear\n\n3. Exit\n\n"); draw2d(fs,x,y,0,0); switch(getche()) { case '1': printf("X Shear Value : "); scanf("%d",&a); for(i=0;i<fs;i++) { x1[i]=x[i]+(a*(y[i]-ty)); y1[i]=y[i]; } break; case '2': printf("Y Shear Value : "); scanf("%d",&a); for(i=0;i<fs;i++)...
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2D Scaling

#include<stdio.h> #include <stdlib.h> #include<graphics.h> #include<conio.h> #include<math.h> void draw2d(int,int [],int [],int,int); void main() { int gd=DETECT,gm; int x[20],y[20],tx=0,ty=0,i,fs; int mx,my; initgraph(&gd,&gm,""); printf("No of sides : "); scanf("%d",&fs); printf("Co-ordinates : "); for(i=0;i<fs;i++) { printf("(x%d,y%d)",i,i); scanf("%d%d",&x[i],&y[i]); } draw2d(fs,x,y,tx,ty); printf("magnification (x,y) : "); scanf("%d%d",&mx,&my); for(i=0;i<fs;i++) { x[i]=x[i]*mx; y[i]=y[i]*my; } draw2d(fs,x,y,tx,ty); getch(); } void draw2d(int fs,int x[20],int y[20],int tx,int ty) { int i; for(i=0;i<fs;i++) { if(i!=(fs-1)) line(x[i]+tx,y[i]+ty,x[i+1]+tx,y[i+1]+ty); else line(x[i]+tx,y[i]+ty,x[0]+tx,y[0]+ty); } }
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2D Rotation

#include <stdio.h> #include <stdlib.h> #include<graphics.h> #include<conio.h> #include<math.h> void draw2d(int,int [],int [],int,int); void main() { int gd=DETECT,gm; int x[20],y[20],x1[20],y1[20],tx=0,ty=0,i,fs,a; float theta; initgraph(&gd,&gm,""); printf("No of sides : "); scanf("%d",&fs); printf("Co-ordinates : "); for(i=0;i<fs;i++) { printf("(x%d,y%d)",i,i); scanf("%d%d",&x[i],&y[i]); } draw2d(fs,x,y,tx,ty); printf("translation (x,y), Angle : "); scanf("%d%d%d",&tx,&ty,&a); theta=(float)(a*(3.14/180)); for(i=0;i<fs;i++) { x1[i]=tx+((x[i]-tx)*cos(theta))-((y[i]-ty)*sin(theta)); y1[i]=ty+((y[i]-ty)*cos(theta))+((x[i]-tx)*sin(theta)); } draw2d(fs,x1,y1,tx,ty); getch(); } void draw2d(int fs,int x[20],int y[20],int tx,int ty) { int i; for(i=0;i<fs;i++) { if(i!=(fs-1)) line(x[i]+tx,y[i]+ty,x[i+1]+tx,y[i+1]+ty); else line(x[i]+tx,y[i]+ty,...
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2D Reflection

#include <stdio.h> #include <stdlib.h> #include<graphics.h> #include<conio.h> #include<math.h> void draw2d(int,int [],int [],int,int); void main() { int gd=DETECT,gm; int x[20],y[20],x1[20],y1[20],tx=0,ty=0,i,fs; initgraph(&gd,&gm,""); printf("No of sides : "); scanf("%d",&fs); printf("Co-ordinates : "); for(i=0;i<fs;i++) { printf("(x%d,y%d)",i,i); scanf("%d%d",&x[i],&y[i]); } draw2d(fs,x,y,tx,ty); printf("translation (x,y) : "); scanf("%d%d",&tx,&ty); while(1) { clrscr(); cleardevice(); printf("1. X Reflection\n\n2. Y Reflection\n\n3. Exit"); draw2d(fs,x,y,0,0); switch(getche()) { case '1': for(i=0;i<fs;i++) { x1[i]=(tx+((x[i]-tx)*cos(M_PI))-((y[i]-ty)*sin(M_PI))); y1[i]=y[i]; } break; case '2': for(i=0;i<fs;i++) { x1[i]=x[i]; y1[i]=(tx+((y[i]-ty)*cos(M_PI))+((x[i]-tx)*sin(M_PI))); } break; case '3': close...
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2D Scaling

#include<stdio.h> #include <stdlib.h> #include<graphics.h> #include<conio.h> #include<math.h> void draw2d(int,int [],int [],int,int); void main() { int gd=DETECT,gm; int x[20],y[20],tx=0,ty=0,i,fs; int mx,my; initgraph(&gd,&gm,""); printf("No of sides : "); scanf("%d",&fs); printf("Co-ordinates : "); for(i=0;i<fs;i++) { printf("(x%d,y%d)",i,i); scanf("%d%d",&x[i],&y[i]); } draw2d(fs,x,y,tx,ty); printf("magnification (x,y) : "); scanf("%d%d",&mx,&my); for(i=0;i<fs;i++) { x[i]=x[i]*mx; y[i]=y[i]*my; } draw2d(fs,x,y,tx,ty); getch(); } void draw2d(int fs,int x[20],int y[20],int tx,int ty) { int i; for(i=0;i<fs;i++) { if(i!=(fs-1)) line(x[i]+tx,y[i]+ty,x[i+1]+tx,y[i+1]+ty); else line(x[i]+tx,y[i]+ty,x[0]+tx,y[0]+ty); } }
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2D Translation

#include <stdio.h> #include <stdlib.h> #include<graphics.h> #include<conio.h> #include<math.h> void draw2d(int,int [],int [],int,int); void main() { int gd=DETECT,gm; int x[20],y[20],tx=0,ty=0,i,fs; initgraph(&gd,&gm,""); printf("No of sides : "); scanf("%d",&fs); printf("Co-ordinates : "); for(i=0;i<fs;i++) { printf("(x%d,y%d)",i,i); scanf("%d%d",&x[i],&y[i]); } draw2d(fs,x,y,tx,ty); printf("translation (x,y) : "); scanf("%d%d",&tx,&ty); draw2d(fs,x,y,tx,ty); getch(); } void draw2d(int fs,int x[20],int y[20],int tx,int ty) { int i; for(i=0;i<fs;i++) { if(i!=(fs-1)) line(x[i]+tx,y[i]+ty,x[i+1]+tx,y[i+1]+ty); else line(x[i]+tx,y[i]+ty,x[0]+tx,y[0]+ty); } }
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Simple Animation Using C

Here i have used fillpoly function to draw the object body and used fillellipse function to draw tier. animation is done by looping through the objects x & y position until user hits a key. Keypress event is achived  by using kbhit function. Smoothness of animation is controlled by delay function. Change the delay values to change the animation speed Source: #include<stdio.h> #include<conio.h> #include<graphics.h> #include<dos.h> void main() { int gd=DETECT,gm,i=-300,j; int poly[16]={100,100,250,100,250,50,300,50,325,90,325,140,100,140,100,100}; int tpoly[16]={100,100,250,100,250,50,300,50,325,90,325,140,100,140,100,100}; initgraph(&gd,&gm,""); getch(); while(!kbhit()) { for(j=0;j<16;j+=2) { poly[j]=tpoly[j]+i; } fillpoly(8,poly); setfillstyle(5,7); bar(275+i,60,295+i,85); setfillstyle(5,8); fillellipse(140+i,140,20,20); fillellipse(280+i,140,20,20); setfillstyle(1,0); fillellipse(140+i,140,10,10); fillellipse(280+i,140,10...
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