/*****------ad.c-------*****
*输入要求：输入二进制字符串，如1110011。
*          尽量小于10，不然后面的图形无法显示
***************************/
#include<stdio.h>
#include<graphics.h>
#include<conio.h>
#include<math.h>

char str_num[100];

void initgraphics()
{
    int gd=DETECT;
    int gm;
    initgraph(&gd,&gm,"d:\\language\\tc20\\bgi");
    return;
}

void graph_xy(int len)
{
    setfillstyle(SOLID_FILL,BLUE);
    bar(0,20+len,635,220+len);
    setcolor(WHITE);
    line(100,30+len,100,200+len);
    outtextxy(95,30+len,"\/");
    outtextxy(100,30+len,"\\y");
    outtextxy(90,130+len,"0");
    line(25,125+len,600,125+len);
    outtextxy(600,120+len,"\\");
    outtextxy(593,125+len,"x\/");
    setcolor(RED);
    outtextxy(200,30,"manchester graph");
    outtextxy(200,270,"sine  graph");
    return;
}

void manchester_graph(int len,int y1,int y2,int count,int flag)
{
    setcolor(WHITE);
    if(flag==1)
        outtextxy(len+10,60,"1");
    else
        outtextxy(len+10,60,"0");
    setcolor(WHITE);
    line(0+len,y1,25+len,y1);
    line(25+len,y1,25+len,y2);
    line(25+len,y2,50+len,y2);
    if(str_num[count]==str_num[count-1])
    {
        setcolor(WHITE);
        line(0+len,y1,len,y2);
    }
}

void sine_graph(int len,int k,int flag)
{
    double i;
    setcolor(WHITE);
    if(flag==1)
        outtextxy(len+10,300,"1");
    else
        outtextxy(len+10,300,"0");
    for(i=0;i<50;i+=0.001)
    putpixel(i+len,(200+k*sin(6.28*i/50))+150,WHITE);
    return;
}

int main(void)
{
    int count=0;
    int length=50;
    int flag=0;

    initgraphics();
    graph_xy(0);
    graph_xy(240);

    printf("input your b_str_num(strlen<=10):");
    gets(str_num);

    while(str_num[count]!='\0')
    {
        switch(str_num[count])
        {
        case '0':
            flag=0;
            manchester_graph(length,100,75,count,flag);
            sine_graph(length,10,flag);
            length=length+50;
            break;
        case '1':
            flag=1;
            manchester_graph(length,75,100,count,flag);
            sine_graph(length,50,flag);
            length=length+50;
            break;
        default:
            cleardevice();
            outtextxy(200,200,"input error number!");
            getch();
            closegraph();
            exit(8);
        }
        ++count;
    }
    getch();
    closegraph();
    return 0;
}



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