Graphic computer graphics three-dimensional transformation algorithm

Project download

Http://pan.baidu.com/s/1o7OEMc6

Tcddd.rar

This is the TC graphics program running under Windows, and the Easyx library is used;

Easyx Library can be consulted:

http://blog.csdn.net/bcbobo21cn/article/details/51207782

http://www.easyx.cn

Code reference

Http://blog.sina.com.cn/s/articlelist_1287275024_9_1.html

13-dimensional perspective projection transformation algorithm

#include <math.h> #include <graphics.h> #include <conio.h> #include <stdio.h>void draw (float z[ ][4],float xt0,float yt0,float ts0); void matrix (float t[][4]); #define N 22float p[n][4]={{45,30,0,1},{27,30,0,1},{ 27,30,10,1},{18,30,10,1}, {18,30,0,1},{0,30,0,1},{0,30,15,1},{45,30,15,1}, {45,30,0,1},{ 45,0,0,1},{45,0,15,1},{45,15,27,1}, {0,15,27,1},{0,30,15,1},{45,30,15,1},{45,15,27,1}, { 45,10,15,1},{45,10,5,1},{45,20,5,1},{45,20,15,1}, {0,0,15,1},{0,0,0,1}};int tp[]={-1,0,1 , 2,3,4,5,6,7,0,-1,0,7,11,10,9,0,-1,16,17,18,19,16,-1,9,10,20,21,9,-1,10,11,12,20,10,-1,6,7,11,12,6,-1, 5,6,12,  20,21,5,-100};main () {static float tx[4][4];  float b1,b2,h,e,a,l,m,n,k,d,q;  int i;  Initgraph (640, 480);  int Driver,mode;  Driver=detect;  Initgraph (&driver,&mode, "");  Settextstyle (3,0,_t ("The Song Body"));  Settextstyle (0, _t ("Song Body"));  SetColor (GREEN); OutTextxy (20,20, "3D Perspective drawing Matrix convert");  for (i=1;i<6;i++) printf ("\ n"); printf ("Input==>ab,bc,h,θ,α:");  /*θ, Alpha Input Method hint: alt+233,alt+224 *///scanf ("%f,%f,%f,%f,%f", &b1,&b2,&h,&e,&a);  b1=15;  b2=10;  h=15;  e=233;  a=224;  e=e*3.14159/180.0;  a=a*3.14159/180.0;  L=-1* (B2*cos (e)-b1*sin (e))/2;  m=-(B2*sin (e) +b1*cos (e));  N=-2*H/3;  K=b1*sin (e) +b2*cos (e)-b1*cos (e) *tan (A/2)-b2*sin (e) *tan (A/2);  d=k/(2*tan (A/2));  q=-1/d; Tx[0][0]=cos (e); Tx[0][3]=q*sin (e); Tx[1][0]=-sin (e); Tx[1][3]=q*cos (e); tx[2][2]=1;tx[3][0]=1;tx[3][2]=n;tx[3][3]   =m*q+1;  SetColor (YELLOW);  Matrix (tx[0]);  Matrix (TX);  Getch (); Closegraph ();}  void matrix (float t[][4]) {float z[n][4],xt0,yt0,ts0;  int i,j,k;      for (i=0;i<n;i++) for (j=0;j<4;j++) {z[i][j]=0;    for (k=0;k<4;k++) z[i][j]=z[i][j]+p[i][k]*t[k][j]; }//draw (z[0],300,200,z[3][3]);d Raw (z,300,200,z[3][3]);}  void Draw (float z[][4],float xt0,float yt0,float ts0) {float x[n],y[n]; int i; for (i=0;i<n;i++) {x[i]=xt0-z[i][0]/z[i][3]*ts0*4;  y[i]=yt0-z[i][2]/z[i][3]*ts0*4;    } for (i=0;i<1000;i++) {if (tp[i]==-100) break;      if (tp[i]==-1) {i++;    MoveTo (X[tp[i]],y[tp[i]);  } if (tp[i]>=0) LineTo (X[tp[i]],y[tp[i]); }}

Two or three view projection transformation algorithm

#include <math.h> #include <graphics.h> #include <conio.h> #include <stdio.h>void draw (float z[ ][4],float xt0,float yt0,float ts0); void matrix (float t[][4]); #define N 25float p[n][4]={{0,0,5,1},{0,0,0,1},{40,0,0,1 },{40,0,5,1}, {40,25,5,1},{0,25,5,1},{0,25,0,1},{40,25,0,1}, {0,25,0,1},{0,0,0,1},{35,5,5,1},{35,5,35,           1}, {35,10,35,1},{35,10,30,1},{35,15,30,1},{35,20,5,1}, {5,20,5,1},{5,5,5,1},{5,5,35,1},{35,5,35,1}, {35,10,35,1},{5,10,35,1},{5,10,30,1},{5,15,30,1}, {35,15,30,1}};int tp[]={-1,0,1,2,3,0,5,6,1, -1,3,4,5,6,7,2,-1,4,7,-1,10,11,12,13, 14,15,10,-1,17,18,21,22,23,16,17,-1,10,17,-1,11,18,-1,12,21, -1,13,22,-1,1  4,23,-1,15,16,-100};main () {static float tv[4][4],th[4][4],tw[4][4];  int Driver,mode;  Driver=detect;  Initgraph (&driver,&mode, "");  Initgraph (640, 480);  Settextstyle (1,0,_t ("The Song Body"));  SetColor (RED);  Outtextxy (30,20, "3 Sides View graphic matrix convert");Tv[0][0]=1;tv[2][2]=1;tv[3][3]=1;  Th[0][0]=1;th[1][2]=-1;th[3][2]=-10;th[3][3]=1;  Tw[1][0]=-1;tw[2][2]=1;tw[3][0]=-10;tw[3][3]=1;  SetColor (white);  Matrix (tv[0]);  Matrix (th[0]);  Matrix (tw[0]);  Matrix (TV);  Matrix (TH);  Matrix (TW);  Getch (); Closegraph ();}  void matrix (float t[][4]) {float z[n][4],xt0,yt0,ts0;  int i,j,k;      for (i=0;i<n;i++) for (j=0;j<4;j++) {z[i][j]=0;    for (k=0;k<4;k++) z[i][j]=z[i][j]+p[i][k]*t[k][j]; }//draw (z[0],310,270,4);d Raw (z,310,270,4);}  void Draw (float z[][4],float xt0,float yt0,float ts0) {float x[n],y[n];  int i;    for (i=0;i<n;i++) {x[i]=xt0-z[i][0]*ts0;  Y[I]=YT0-Z[I][2]*TS0;    } for (i=0;i<1000;i++) {if (tp[i]==-100) break;      if (tp[i]==-1) {i++;    MoveTo (X[tp[i]],y[tp[i]);  } if (tp[i]>=0) LineTo (X[tp[i]],y[tp[i]); }                                                 }

33-D Projection transformation algorithm for positive axis measurement

#include <math.h> #include <graphics.h> #include <conio.h> #include <stdio.h>void draw (float z[ ][4],float xt0,float yt0,float ts0); void matrix (float t[][4]); #define N 18float p[n][4]={{0,0,0,1},{0,40,0,1},{ 45,40,0,1},{45,0,0,1}, {45,0,8,1},{45,40,8,1},{8,40,8,1},{8,0,8,1}, {8,0,28,1},{8,40,28,1} , {0,40,28,1},{0,0,28,1}, {40,24,8,1},{8,24,8,1},{8,24,24,1},{8,16,24,1}, {8,16,8,1},{40,16 , 8,1}};int TP []={-1,0,1,2,3,0,5,6,1,-1,3,4,5,6,7,2,-1,4,7,-1,10,11,12,13,14,15,10,-1,17,18,21,22,23,16,1  7,-1,10,17,-1,11,18,-1,12,21,-1,13,22,-1,14,23,-1,15,16,-100};main () {static float tx[4][4];  float Beta,cita;  int Driver,mode;  Driver=detect;  Initgraph (&driver,&mode, "");  Initgraph (640, 480);  Settextstyle (1,0,_t ("The Song Body"));  Settextstyle (0, _t ("Song Body"));  SetColor (BROWN);  Outtextxy (140,20, "3D graphic matrix convert");  printf ("input==>β,θ:"); The input methods for/*β and θ are: alt+225, Alt +233*/ scanf ("%f,%f", &beta,&cita);  beta=225;  cita=233;  beta=beta*3.14159/180.0;  cita=cita*3.14159/180.0;  Tx[0][0]=cos (Beta), Tx[0][2]=-sin (Beta) *sin (CITA); Tx[1][0]=-sin (beta);  Tx[1][2]=-cos (Beta) *sin (CITA); Tx[2][2]=cos (CITA); tx[3][3]=1;  SetColor (CYAN);  Matrix (tx[0]);  Matrix (TX);  Getch (); Closegraph ();}  void matrix (float t[][4]) {float z[n][4],xt0,yt0,ts0;  int i,j,k;      for (i=0;i<n;i++) for (j=0;j<4;j++) {z[i][j]=0;    for (k=0;k<4;k++) z[i][j]=z[i][j]+p[i][k]*t[k][j]; }//draw (z[0],300,200,4);d Raw (z,300,200,4);}  void Draw (float z[][4],float xt0,float yt0,float ts0) {float x[n],y[n];  int i;    for (i=0;i<n;i++) {x[i]=xt0-z[i][0]*ts0;  Y[I]=YT0-Z[I][2]*TS0;    } for (i=0;i<1000;i++) {if (tp[i]==-100) break;      if (tp[i]==-1) {i++;    MoveTo (X[tp[i]],y[tp[i]);  } if (tp[i]>=0) LineTo (X[tp[i]],y[tp[i]); }}

Four related programming problems 12-dimensional arrays do function parameters

The above three programs use a two-dimensional array to do function parameters; Look at a two-dimensional array to do the function parameter example;

#include <stdio.h>    void print_array (int *array, int len)  {      int i = 0;      for (; i < Len; i++) {          printf ("%d", Array[i]);      }      Putchar (' \ n '); }  void func (int array[3][10]) {     Print_array (array[0], ten);     Print_array (Array[1], ten);     Print_array (Array[2], ten);     Print_array (Array[3], ten);     Print_array (Array[4], 10); }  int Main () {     int array[5][10] = {         {0,1,2,3,4,5,6,7,8,9},         {10,11,12,13,14,15,16,17,18,19},         {20,21,22,23,24,25,26,27,28,29},         {30,31,32,33,34,35,36,37,38,39},         {40,41,42,43,44,45,46,47,48,49}     };     Func (array);     return 0; }

Improvement of TC function in 2 Easyx library

Settextstyle (1,0,4);

Need to change

Settextstyle (0, _t ("Song Body"));

and other improvements, see

Easyx Help Manuals and

http://www.easyx.cn/skills/View.aspx?id=89

Graphic computer graphics three-dimensional transformation algorithm