//  正弦波群     ZXBQ.CPP                     谢春 2001.1.1.

#include "point0.h"                         //包含自定义point.h函数
#include "point1.h"
#include "point2.h"
#include "point3.h"                         //包含自定义point.h函数
#include "point4.h"
#include "point5.h"
#include "math.h"                           //包含数学函数
#define PI 3.141596                         //宏定义PI符号常量

void main()                                 //主函数
{
  int gdriver=DETECT,gmode;                 //定义整型变量gdriver,gmode
  int b=8,bk=1,c,d,m,n,p,v,w;
  float i,s=PI/9999,x,xa,y,yh;
  registerbgidriver(EGAVGA_driver);         //登记图形驱动程序(EGAVGA_driver)
  initgraph(&gdriver,&gmode," ");           //定义变量后,初始化图形系统

  setbkcolor(bk);
  cout<<"\n";
  cout<<"\n";
  cout<<"\n";
  cout<<"\n";
  cout<<"               Ｃ＋＋语言  图形程序设计\n";
  cout<<"\n";
  cout<<"                    彩色正弦波群演示\n";
  cout<<"       线宽,颜色,位置,波峰数,背景,速度,方向循环变化\n";
  cout<<"\n";
  cout<<"                    佛山职业技术学院\n";
  cout<<"                计算机及应用984 课程设计\n";
  cout<<"                        2001.1.1.\n";
  cout<<"\n";
  cout<<"\n";
  cout<<"\n";
  cout<<"                    按任意键开始演示\n";
  cout<<"                      水平正弦波群!\n";
  getch();                                  //按任意键继续
  cleardevice();

// 1. 水平正弦波群
//    线宽,颜色,位置,波峰数,背景,速度,方向循环变化
 n=-1;
for(m=1;m<6;m++)                            //波峰数m: 1,2,3,4,5
 { n+=2;                                    //半波数n: 1,3,5,7,9
   v=n*n;                                   //速度v:1,9,25,49,81,121
   yh=40;
   bk=m;                                    //背景颜色bk:1,2,3,4,5
   setbkcolor(bk);
for(d=1;d<6;d++)                            //正弦波群段d:1,2,3,4,5,6
 {
for(p=0;p<6;p++)                            //point0.h, ...... point5.h
 {
   w=1+2*p;                                 //线宽w:1,3,5,7,9,11
   c=14-p;                                  //颜色c:14,13,12,11,10,9
   yh=yh+w+b;                               //正弦波位置yh:49,60,73,......
switch(p)
 { case 0:
 for(i=0;i<=n*PI;i+=v*s)
 {
  x=640/(n*PI)*i;
  y=yh-25*sin(i);
  point0 p(x,y,c);                          //线宽:1,颜色:黄
  p.show();
 }
  break;

   case 1:
 for(i=n*PI;i>=0;i-=v*s)
 {
  x=640/(n*PI)*i;
  y=yh-25*sin(i);
  point1 p(x,y,c);                          //线宽:3,颜色:洋红
  p.show();
 }
  break;

   case 2:
 for(i=0;i<=n*PI;i+=v*s)                    //半波数n: 3,5,7,9,11
 {
  x=640/(n*PI)*i;
  y=yh-25*sin(i);
  point2 p(x,y,c);                          //线宽:5,颜色:红
  p.show();
 }
  break;

   case 3:
 for(i=n*PI;i>=0;i-=v*s)
 {
  x=640/(n*PI)*i;
  y=yh-25*sin(i);
  point3 p(x,y,c);                          //线宽:7,颜色:11
  p.show();
 }
  break;

   case 4:
 for(i=0;i<=n*PI;i+=v*s)                    //半波数n: 3,5,7,9,11
 {
  x=640/(n*PI)*i;
  y=yh-25*sin(i);
  point4 p(x,y,c);                          //线宽:9,颜色:绿
  p.show();
 }
  break;

  case 5:
 for(i=n*PI;i>=0;i-=v*s)
 {
  x=640/(n*PI)*i;
  y=yh-25*sin(i);
  point5 p(x,y,c);                          //线宽11,颜色:蓝
  p.show();
 }
  break;
 }
 }
 }
 cleardevice();
 }

// 2. 垂直正弦波群
//    线宽,颜色,位置,波峰数,背景,速度,方向循环变化
 cout<<"            按任意键开始演示\n";
 cout<<"              垂直正弦波群!\n";
 getch();                                  //按任意键继续
 cleardevice();
 cout<<"  循环\n";
 cout<<"  变化\n";
 cout<<"\n";
 cout<<"  线宽\n";
 cout<<"  颜色\n";
 cout<<"  峰数\n";
 cout<<"  位置\n";
 cout<<"  幅值\n";
 cout<<"  背景\n";
 cout<<"  速度\n";
 cout<<"  方向\n";

 n=-1;
for(m=1;m<6;m++)                            //波峰数m: 1,2,3,4,5
 { n+=2;                                    //半波数n: 1,3,5,7,9
   v=n*n;                                   //速度v:9,25,49,81,121
   xa=80;
   bk=m;                                    //背景颜色bk:1,2,3,4,5
   setbkcolor(bk);
for(d=1;d<6;d++)                            //正弦波群段d:1,2,3,4,5,6
 {
for(p=0;p<6;p++)                            //point0.h, ...... point5.h
 { w=1+2*p;                                 //线宽w:1,3,5,7,9,11
   c=14-p;                                  //颜色c:14,13,12,11,10,9
   xa=xa+w+b;                               //正弦波位置xa:89,100,113......

switch(p)
 { case 0:
 for(i=0;i<=n*PI;i+=v*s)                    //半波数n: 1,3,5,7,9
 {
  y=480/(n*PI)*i;
  x=xa-25*sin(i);
  point0 p(x,y,c);                          //线宽:1,颜色:黄
  p.show();
 }
  break;

   case 1:
 for(i=n*PI;i>=0;i-=v*s)
 {
  y=480/(n*PI)*i;
  x=xa-25*sin(i);
  point1 p(x,y,c);                          //线宽:3,颜色:洋红
  p.show();
 }
  break;

   case 2:
 for(i=0;i<=n*PI;i+=v*s)                    //半波数n: 3,5,7,9,11
 {
  y=480/(n*PI)*i;
  x=xa-25*sin(i);
  point2 p(x,y,c);                          //线宽:5,颜色:红
  p.show();
 }
  break;

   case 3:
 for(i=n*PI;i>=0;i-=v*s)
 {
  y=480/(n*PI)*i;
  x=xa-25*sin(i);
  point3 p(x,y,c);                          //线宽:7,颜色:11
  p.show();
 }
  break;

   case 4:
 for(i=0;i<=n*PI;i+=v*s)                    //半波数n: 3,5,7,9,11
 {
  y=480/(n*PI)*i;
  x=xa-25*sin(i);
  point4 p(x,y,c);                          //线宽:9,颜色:绿
  p.show();
 }
  break;

   case 5:
 for(i=n*PI;i>=0;i-=v*s)
 {
  y=480/(n*PI)*i;
  x=xa-25*sin(i);
  point5 p(x,y,c);                          //线宽11,颜色:蓝
  p.show();
 }
  break;
 }

 }
 }
  cleardevice();
 }

// 3. 水平,垂直正弦波群
//    线宽,颜色,位置,波峰数,背景,速度,方向循环变化
 cout<<"            按任意键开始演示\n";
 cout<<"           水平,垂直正弦波群!\n";
 getch();                                  //按任意键继续
 cleardevice();

 n=-1;
for(m=1;m<6;m++)                            //波峰数m: 1,2,3,4,5
 { n+=2;                                    //半波数n: 1,3,5,7,9
   v=n*n;                                   //速度v:9,25,49,81,121
   yh=40;
   xa=80;
   bk=m;                                    //背景颜色bk:1,2,3,4,5
   setbkcolor(bk);
for(d=1;d<6;d++)                            //正弦波群段d:1,2,3,4,5,6
 {
for(p=0;p<6;p++)                            //point0.h, ...... point5.h
 { w=1+2*p;                                 //线宽w:1,3,5,7,9,11
   c=14-p;                                  //颜色c:14,13,12,11,10,9
   yh=yh+w+b;                               //水平正弦波位置yh:49,60,73......
   xa=xa+w+b;                               //垂直正弦波位置xa:89,100,113......

switch(p)
 {
  case 0:
 for(i=0;i<=n*PI;i+=v*s)                    //半波数n: 1,3,5,7,9
 {
  x=640/(n*PI)*i;                           //水平正弦波
  y=yh-25*sin(i);
  point0 px(x,y,c);                         //线宽:1,颜色:黄
  px.show();
  y=480/(n*PI)*i;                           //垂直正弦波
  x=xa-25*sin(i);
  point0 py(x,y,c);                         //线宽:1,颜色:黄
  py.show();
 }
  break;

   case 1:
 for(i=n*PI;i>=0;i-=v*s)
 {
  x=640/(n*PI)*i;                           //水平正弦波
  y=yh-25*sin(i);
  point1 px(x,y,c);                         //线宽:3,颜色:洋红
  px.show();
  y=480/(n*PI)*i;                           //垂直正弦波
  x=xa-25*sin(i);
  point1 py(x,y,c);                         //线宽:3,颜色:洋红
  py.show();
 }
  break;

   case 2:
 for(i=0;i<=n*PI;i+=v*s)                    //半波数n: 3,5,7,9,11
 {
  x=640/(n*PI)*i;                           //水平正弦波
  y=yh-25*sin(i);
  point2 px(x,y,c);                         //线宽:5,颜色:红
  px.show();
  y=480/(n*PI)*i;                           //垂直正弦波
  x=xa-25*sin(i);
  point2 py(x,y,c);                         //线宽:5,颜色:红
  py.show();
 }
  break;

   case 3:
 for(i=n*PI;i>=0;i-=v*s)
 {
  x=640/(n*PI)*i;                           //水平正弦波
  y=yh-25*sin(i);
  point3 px(x,y,c);                         //线宽:7,颜色:11
  px.show();
  y=480/(n*PI)*i;                           //垂直正弦波
  x=xa-25*sin(i);
  point3 py(x,y,c);                         //线宽:7,颜色:11
  py.show();
 }
  break;

   case 4:
 for(i=0;i<=n*PI;i+=v*s)                    //半波数n: 3,5,7,9,11
 {
  x=640/(n*PI)*i;                           //水平正弦波
  y=yh-25*sin(i);
  point4 px(x,y,c);                         //线宽:9,颜色:绿
  px.show();
  y=480/(n*PI)*i;                           //垂直正弦波
  x=xa-25*sin(i);
  point4 py(x,y,c);                         //线宽:9,颜色:绿
  py.show();
 }
  break;

   case 5:
 for(i=n*PI;i>=0;i-=v*s)
 {
  x=640/(n*PI)*i;                           //水平正弦波
  y=yh-25*sin(i);
  point5 px(x,y,c);                         //线宽:11,颜色:蓝
  px.show();
  y=480/(n*PI)*i;                           //垂直正弦波
  x=xa-25*sin(i);
  point5 py(x,y,c);                         //线宽:11,颜色:蓝
  py.show();
 }
  break;
 }

 }
 }
  cleardevice();
 }
  cout<<"           按任意键退出演示\n";
  cout<<"               正弦波群!\n";
  getch();                                  //按任意键继续
  closegraph();                             //关闭图形模式返回字符模式
}