mouse.c

#include<GLUT/glut.h>
#include<stdio.h>
#include<time.h>
#include<math.h>

#define WIDTH 1024
#define HEIGHT 768
#define PART 100
#define MONITW  362.0
#define MONITH  271.0
#define D 1000.0

void square();
void circle();
void circle_loop();
float rnd;
float deg2pixh(float degree);
float deg2pixw(float degree);
int select(int x, int y);

int square_width;
int square_height;
int rest_width;
int rest_height;
int thx;
int thy;
int col[9];

void initialize(){
  int i;
  square_width = deg2pixw(5.0);
  square_height = deg2pixh(5.0);
  rest_width = (WIDTH-square_width)/2.0;
  rest_height = (HEIGHT-square_height)/2.0;
  thx = (int)(square_width/4);
  thy = (int)(square_height/4);
  for(i=1;i<=8;i++){
    col[i] = 0;
  }

}


void color(int col){
  switch(col){
    case 0:
      glColor3f(0.0,0.0,0.0);
      break;
    case 1:
      glColor3f(1.0,0.0,0.0);
      break;
    case 2:
      glColor3f(0.0,1.0,0.0);
      break;
    case 3:
      glColor3f(0.0,0.0,1.0);
      break;
    case 4:
      glColor3f(1.0,1.0,0.0);
      break;
    case 5:
      glColor3f(1.0,1.0,1.0);
      break;
    default:
      glColor3f(0.0,0.0,0.0);
      break;
  }
  glFlush();
}



int select(int x, int y){

  if(rest_height<=y && rest_width<=x && rest_height+square_height >= y && rest_width+square_width>= x){
    if(rest_height<=y && rest_height+square_height/3 >=y){
      printf("point1");
      if(rest_width<=x && rest_width+square_width/3 >=x){
        return 1;
      }
      else if(((rest_width+square_width)>=x) && (rest_width+(square_width*(2.0/3.0))<=x)) {
        return 3;  
      }
      else{
        return 2;
      }
    }
    else if(rest_height+square_height/3 <= y && rest_height+square_height*(2.0/3.0) >=y){
      printf("point2");

      if(rest_width<=x && rest_width+square_width/3 >=x){
        return 4;
      }
      else if((rest_width+square_width)>=x && rest_width+square_width*(2.0/3.0)<=x ){
        return 5;  
      }
      else{
        return 0;
      }
    }

    else if(rest_height+square_height>= y && rest_height+square_height*(2.0/3.0) <=y){
      printf("point3");

      if(rest_width<=x && rest_width+square_width/3 >=x){
        return 6;
      }
      else if((rest_width+square_width)>=x && rest_width+square_width*(2.0/3.0)<=x){
        return 8;  
      }
      else{
        return 7;
      }
    }  
  }
  else{
    return 0;
  }
}


void circle2(int num){
  int i,j; 
  switch(num){
    case 1:
      i=1;j=1;
    //  circle(rest_width,rest_height,i*thx,j*thy);
      break;
    case 2:
      i=2;j=1;
    //  circle(rest_width,rest_height,i*thx,j*thy);
      break;
    case 3:
      i=3;j=1;
     // circle(rest_width,rest_height,i*thx,j*thy);
      break;
    case 4:
      i=1;j=2;
      //circle(rest_width,rest_height,i*thx,j*thy);
      break;
    case 5:
      i=3;j=2;
     // circle(rest_width,rest_height,i*thx,j*thy);
      break;
    case 6:
      i=1;j=3;
     // circle(rest_width,rest_height,i*thx,j*thy);
      break;
    case 7:
      i=2;j=3;
      //circle(rest_width,rest_height,i*thx,j*thy);
      break;
    case 8:
      i=3;j=3;
     // circle(rest_width,rest_height,i*thx,j*thy);
      break;
    default: 
      break;
  }
  if(col[num]==6){
    col[num] = 0;
  }
  color(col[num]);
  circle(rest_width,rest_height,i*thx,j*thy);
  

}


float deg2pixh(float degree){ //任意のdegree（角度）をピクセルに変換する関数　
  float deg1,pix;
  pix = atan(MONITH/(D*2)); //radian
  //printf("%f\n",pix);

  pix = pix * (180.0 / M_PI); //.to_degree
  //printf("%f\n",pix);

  deg1 = (HEIGHT/2.0)/pix; //1deg の pixel

  //printf("%f\n",deg1);
  return deg1*degree;

}


float deg2pixw(float degree){ //任意のdegree（角度）をピクセルに変換する関数　
  float deg1,pix;
  pix = atan(MONITW/(D*2)); //radian
  //printf("%f\n",pix);

  pix = pix * (180.0 / M_PI); //.to_degree
  //printf("%f\n",pix);

  deg1 = (WIDTH/2.0)/pix; //1deg の pixel

  // printf("%f\n",deg1);
  return deg1*degree;

}

void display(){
  glClear(GL_COLOR_BUFFER_BIT);
  square();
  circle_loop();
  glFlush();
}

void init(){
  glClearColor(0.0,0.0,0.0,0.0);
}

void resize(int w, int h){
  glViewport(0, 0, w, h);
  glLoadIdentity();
  glOrtho(-0.5,(GLdouble)w-0.5,(GLdouble)h-0.5,-0.5,-1,1);
}

void circle_loop(){
  int i,j;
  // int start_width = WIDTH*0.1;
  // int start_height = HEIGHT *0.1;


  //for(i=1;i<=3;i++){
  //  for(j=1;j<=3;j++){
  //    if(i==2 && j==2){continue;}
      // printf("%d  %d",i*thx,j*thy);
  //    circle(rest_width,rest_height,i*thx,j*thy);

  for(i=1;i<=8;i++){
  circle2(i);
    }
}




float randomF(){
  float a;
  a = (float)rand() / 32768.0;
  return	a;
}

void circle(int start_width,int start_height ,int thx,int thy){
  int i, n = PART;
  float x, y, r = deg2pixw(0.5);
  double rate;

    glBegin(GL_POLYGON); // ポリゴンの描画
  // 円を描画
  for (i = 0; i < n; i++) {
    // 座標を計算
    rate = (double)i / n;
    x = r * cos(2.0 * M_PI * rate)+thx + start_width;
    y = r * sin(2.0 * M_PI * rate)+thy + start_height;
    glVertex3f(x, y, 0.0); // 頂点座標を指定
  }
  glEnd(); // ポリゴンの描画終了
  glFlush(); // OpenGLのコマンドを強制的に実行(描画終了)

}

void dot(int x, int y){
  glColor3d(0.0,0.0,1.0);
  glBegin(GL_QUADS);
  glVertex2d(x-4,y-4);
  glVertex2d(x+4,y-4);
  glVertex2d(x+4,y+4);
  glVertex2d(x-4,y+4);
  glEnd();
  glFlush();
}


void square(){
  glClear(GL_COLOR_BUFFER_BIT);
  glColor3f(1.0, 1.0, 1.0);
  glBegin(GL_QUADS);
  glVertex2d(rest_width, rest_height);
  glVertex2d(rest_width+square_width,rest_height);
  glVertex2d(rest_width+square_width,rest_height+square_height);
  glVertex2d(rest_width,rest_height+square_height);
  glEnd();
  glFlush();
}



void mouse(int button, int state, int x, int y)
{
  switch (button) {
    case GLUT_LEFT_BUTTON:
      printf("left");
      break;
    case GLUT_MIDDLE_BUTTON:
      printf("middle");
      break;
    case GLUT_RIGHT_BUTTON:
      printf("right");
      break;
    default:
      break;
  }

  printf(" button is ");

  switch (state) {
    case GLUT_UP:
      printf("up");
      col[select(x,y)]++;
      break;
    case GLUT_DOWN:
      printf("down");
      //    color();
      break;
    default:
      break;
  }

  // color();
  //dot(x,y);
  glFlush();
  glutPostRedisplay();
  circle2(select(x,y));
  
  printf("Select => %d\n",select(x,y));
  printf(" at (%d, %d)\n", x, y);
}

int main(int argc, char *argv[]){
  //deg2pixw(5);
  initialize();
  srand(time(NULL));
  glutInitWindowPosition(100,100);
  glutInitWindowSize(WIDTH,HEIGHT);
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_RGBA);
  glutCreateWindow(argv[0]);
  glutDisplayFunc(display);
  glutReshapeFunc(resize);
  glutMouseFunc(mouse);
  init();
  glutMainLoop();

  return 0;
}