玩转12864，划线，画圆，汉字，图片程序

fanichicl · 发表于 2019-1-21 09:42

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玩转12864，划线，画圆，汉字，图片程序

  F2 z3 T5 R, ?% u8 C
12864并行显示：
/*********************************************************
      功  能：12864并行驱动画任意线段和园以及图片.汉字程序
      单片机：STC12C5A60S2
      晶  振：11.0592M
      时  间：2017-3-1
      作  者：苏义江修改整理（感谢前辈的辛苦）
      注  释：在多功能试验板成功显示
*****************************************************/
#include<stc12c5a60s2.h>
#include<stdlib.h>
#include<math.h>
#define uint unsigned int
#define uchar unsigned char
#define pi 3.1415926
#define LCDDATA P0
sbit RS = P2^7;
sbit RW = P2^6;
sbit EN = P2^5;

uchar code hanz[]= {"玩转12864!"};
uchar code hanz2[]={"苏义江爱好单片机"};
uchar code logo[]= {
//取模方式：纵向字节倒序
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x0F,0xFF,0xFF,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x1F,0xFF,0xFF,0xFC,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x3F,0xFF,0xC3,
0xFC,0x00,0x30,0x00,0x06,0x00,0xE0,0x06,0x66,0x19,0x8C,0x31,
0x00,0x3F,0xFF,0xC3,0xFC,0x00,0x30,0x00,0x06,0x00,0xE0,0x06,
0x66,0x19,0x8C,0x31, 0x00,0x3F,0xFE,0x01,0xFE,0x02,0x39,0x00,
0x06,0x00,0xC0,0x0C,0x62,0x19,0x8C,0x31, 0x00,0x3F,0xF8,0x00,
0xFE,0x07,0x31,0x80,0xFC,0x00,0xC0,0x0C,0x62,0x19,0x8C,0x31,
0x00,0x3F,0xF0,0x00,0xFE,0x06,0x31,0x80,0x78,0x00,0xC0,0x0C,
0x66,0x1D,0xDC,0x31, 0x00,0x3F,0xE0,0x01,0xFE,0x06,0x31,0x80,
0x30,0x00,0xC0,0x0C,0x00,0x19,0xCC,0x30, 0x00,0x3F,0xC0,0x03,
0xFE,0x07,0x39,0x80,0x38,0x00,0xC0,0x1F,0x00,0x18,0x8C,0x00,
0x00,0x3F,0xC0,0x03,0xFE,0x07,0x39,0x80,0x38,0x00,0xC0,0x1F,
0x00,0x18,0x8C,0x00, 0x00,0x3F,0xC0,0x3F,0xFE,0x06,0x31,0x80,
0x38,0x00,0xC0,0x3D,0x18,0x19,0x8C,0x0C, 0x00,0x3F,0x80,0x7F,
0xFE,0x06,0x31,0x80,0x38,0x00,0xE0,0x3D,0x18,0x19,0x8C,0x1C,
0x00,0x3F,0x80,0xFF,0xFE,0x06,0x31,0x80,0x18,0x00,0xE0,0x3D,
0x18,0x19,0x8C,0x3C, 0x00,0x3F,0x81,0xF3,0xFE,0x07,0x31,0x80,
0x38,0x00,0xE0,0x3F,0x18,0x19,0xD8,0x0C, 0x00,0x3F,0x81,0xF3,
0xFE,0x07,0x31,0x80,0x38,0x00,0xE0,0x3F,0x18,0x19,0xD8,0x0C,
0x00,0x3F,0x03,0xC1,0xFE,0x00,0x30,0x00,0x30,0x00,0xE0,0x3F,
0x18,0x18,0x00,0x0C, 0x00,0x3F,0x03,0xC0,0xFE,0x00,0x30,0x01,
0xF0,0x00,0xE0,0x35,0x18,0x1C,0x00,0x0C, 0x00,0x3F,0x03,0x80,
0xFE,0x00,0x3C,0x80,0x00,0x00,0xE0,0x0C,0x18,0x0C,0x00,0x18,
0x00,0x3F,0x03,0x80,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00, 0x00,0x3F,0x03,0x80,0xFE,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x3F,0x03,0xC0,
0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x3F,0x01,0xC1,0xFE,0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF, 0x00,0x3F,0x81,0xFF,0xFE,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x3F,0x80,0xFF,
0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x3F,0x80,0xFF,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00, 0x00,0x3F,0x80,0x7F,0xFE,0x00,0x00,0x00,
0x00,0x00,0x08,0x08,0x00,0x00,0x00,0x00, 0x00,0x3F,0xC0,0x0F,
0xFE,0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00,0x00,0x00,0x00,
0x00,0x3F,0xE0,0x01,0xFE,0x01,0x01,0x80,0x00,0x60,0x10,0xD0,
0x00,0x00,0x00,0x00, 0x00,0x3F,0xF0,0x01,0xFE,0x04,0x44,0x4C,
0x89,0xB1,0x93,0x70,0x00,0x00,0x00,0x00, 0x00,0x3F,0xF8,0x00,
0xFE,0x0C,0x4C,0x4D,0xD3,0x1B,0x12,0x30,0x78,0xE3,0xF8,0x3C,
0x00,0x3F,0xF8,0x00,0xFE,0x0C,0x4C,0x4D,0xD3,0x1B,0x12,0x30,
0x78,0xE3,0xF8,0x3C, 0x00,0x3F,0xFC,0x01,0xFE,0x0F,0xCF,0xC5,
0xF2,0x12,0x24,0x30,0x81,0x16,0x48,0x60, 0x00,0x3F,0xFF,0x01,
0xFE,0x08,0x08,0x06,0x62,0x12,0x24,0x20,0x82,0x14,0x88,0x40,
0x00,0x3F,0xFF,0xFF,0xFE,0x08,0x08,0x06,0x63,0x26,0x26,0x60,
0x83,0x24,0x88,0x40, 0x00,0x0F,0xFF,0xFF,0xFE,0x07,0x07,0x04,
0x41,0xC4,0x63,0xE4,0x71,0xC0,0x92,0x39, 0x00,0x0F,0xFF,0xFF,
0xFE,0x07,0x07,0x04,0x41,0xC4,0x63,0xE4,0x71,0xC0,0x92,0x39,
0x00,0x07,0xFF,0xFF,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00 };          //图像数据

void delay(uchar i)
{
      for(;i>0;i--);
}
void delayms( uint i)
{
      uint j;
      for(;i>0;i--)
      { for(j=1000;j>0;j--);}
}
//写指令
void writecmd(uchar cmd)//写指令
{

      LCDDATA=0x00;
      RW=0;
      RS=0;
      EN=0;
      LCDDATA=cmd;
      delay(2);
      EN=1;
      delay(20);
      EN=0;
      delay(20);
}
//写数据
void writedate(uchar date)
{
//while((readstatus() &0x80 )!=0x00);
      LCDDATA=0x00;
      RW=0;
      RS=1;
      EN=0;
      LCDDATA=date;
      delay(2);
      EN=1;
      delay(20);
      EN=0;
      delay(20);
}
//读12864内部数据
uchar readdate()
{
      uchar i;
//while((readstatus() &0x80 )!=0x00);

      RW=1;
      RS=1;
      EN=0;
      delay(10);
      EN=1;
      LCDDATA=0xff;
      delay(10);
      EN=0;

      EN=1;
      LCDDATA=0;
      delay(10);

      delay(10);
      EN=0;
      i=LCDDATA;
      return i;
}
/*******************************************

函数名称：LCD_init

功能: 初始化LCD

参数：无

返回值：无

********************************************/

void LCD_init()

{
      delayms(30);
      writecmd(0x30);

      delay(20);

      writecmd(0x30);
      delay(20);

      writecmd(0x0c);

      delay(20);

      writecmd(0x01);

      delay(20);

      writecmd(0x06);

      delay(20);

}
//功能：指定地址输入指定个数的字
//addr表示地址 * pt表示数据 num表示数据或汉字个数
void Disp_HZ(uchar addr,const uchar * pt,uchar num)
{
      uchar i;
      writecmd(addr);
      for(i = 0;i < (num*2);i++)
      {
            writedate(*(pt++));
            delayms(1);
      }
}
//清内部随机数据
void Clear_GDRAM(void)
{
      uchar x,y,i,j;
      writecmd(0x34); //打开扩展指令集
      y=0x80;
      x=0x80;
      for(i=0;i<32;i++)
      {
            writecmd(y);
            writecmd(x);
            for(j=0;j<16;j++)
            {
                     writedate(0x00);
                     delay(30);
            }
            y++;
      }
      y=0x80;
      x=0x88;
      for(i=0;i<32;i++)
      {
            writecmd(y);
            writecmd(x);
            for(j=0;j<16;j++)
            {
                     writedate(0x00);
                     delay(30);
            }
            y++;
      }
      writecmd(0x30); //回到基本指令集

}
//画图片
void Draw_PM(uchar *ptr)
{
      uint x=0;
      uchar i,j;
      writecmd(0x34);                //扩展指令动作
      writecmd(0x36);                //扩展指令动作

      for(i=0;i<32;i++)                //上半屏显示
      {
               writecmd(0x80|i);          //列位置
               writecmd(0x80);             //行位置
            for(j=0;j<16;j++)                //256/8=32 byte
            {                         //列位置每行自动增加
                        writedate(*ptr);
                        ptr++;
            }
      }

      for(i=0;i<32;i++)                //下半屏显示
      {
            writecmd(0x80|i);             //列位置
            writecmd(0x88);             //行位置
            for(j=0;j<16;j++)                //256/8=32 byte
            {
                        writedate(*ptr);
                        ptr++;
            }
      }
      writecmd(0x30);

}

/*************************************
功能描述: 读取绘图RAM中指定坐标的数据
** 说明: 参数输入坐标地址，
读取后从坐标地址参数位返回数据,所以，
地址参数在输入前须使用
****************************************
void LCD_Read_dat_I(uchar *xp,uchar *yp)
{
writecmd(*yp);    //写竖坐标(0x80-0x9f)
writecmd(*xp);    //写横坐标(AC地址) 上半屏(0x80-0x87) 下半屏(0x88-0x90)
readdate();          //试读
*xp=readdate();       //读高字节并返回给xp
*yp=readdate();       //读低字节并返回给yp
}
*/
/*************************************
//画点在整个屏幕上画一个点 X 0~127 Y 0~63
功能描述: 指定坐标点画点
** 输　  入: unsigned char xp,unsigned char yp,bit dat
X,Y行列坐,dat 1写或0擦除
*******************************************/
/*
void Draw_point(uchar xp,uchar yp,bit dat)
{
uchar xd,rx,ry;

xd=xp/0x10;             //计算横坐标AC步进
xp%=0x10;             //计算AC地址位偏移
      xp++;
      writecmd(0x34);
      writecmd(0x36);
if(yp>31)
{                            //如果yp大于31选下半屏
      yp-=32;                   //计算yp在下半屏的竖向坐标
      yp+=0x80;                //地址命名
      xd+=0x88;                //下半屏起点地址是0x88,地址命名
}
else
{                         //选上半屏
      yp+=0x80;                   //地址命名
      xd+=0x80;                   //上半屏起点地址是0x80,地址命名
}
rx=xd;ry=yp;                   //取AC数据函数需要两个参数返回数据，且参数公用地址,所以使用零时变量
LCD_Read_dat_I(&rx,&ry);       //取当前字节数据
writecmd(yp);                      //重指定当前y地址
writecmd(xd);                      //重指定当前x地址
if(dat)
{                                  //如果是画点
      if(xp<=8)
      {  //如果当前画点坐标在AC地址数据对应的高字节(取余计算结果与字节移位方向相反)
         writedate(rx|(0x01<<(8-xp)));//读取的高位数据与翻转的指定位进行与操作后写入高位
         writedate(ry);       //读取的低位数据原样写回
  }
  else
      {                            //如果当前画点坐标在AC地址数据对应的低字节(取余计算结果与字节移位方向相反)
         writedate(rx);                //读取的高位数据原样写回
         writedate(ry|(0x01<<(16-xp))); //读取的低位数据与指定位进行或操作后写入低位
      }
}
else
{                                  //如果是擦除图像
      if(xp<=8)
      { //如果当前画点坐标在AC地址数据对应的高字节(取余计算结果与字节移位方向相反)
         writedate(rx&~(0x01<<(8-xp)));//读取的高位数据与翻转的指定位进行与操作后写入高位
         writedate(ry);       //读取的低位数据原样写回
      }
      else
      { //如果当前画点坐标在AC地址数据对应的低字节(取余计算结果与字节移位方向相反)
         writedate(rx);                   //读取的高位数据原样写回
         writedate(ry&~(0x01<<(16-xp))); //读取的低位数据与翻转的指定位进行与操作后写入低位
      }
}
      writecmd(0x30);
}
*/

void Draw_point(uchar X,uchar Y,uchar clour)
// X行 Y列 clour为0时画点为其它清除这个点
{
      uchar x_pos,y_pos,x_bit;
      uint read_data1,read_data2,dat1,dat2;
      //计算LCD位置
      writecmd(0x34);
      writecmd(0x36);
      x_pos=X/16; //取16*16首地址
      if(Y>31)
      x_pos+=8; //计算该点所属LCD液晶中X坐标位置，上半屏0-7，下半屏8-15
      x_bit=X%16; //该点位于所在16bit中的第几位
      y_pos=Y%32;
//       writecmd(0x34);
      writecmd(0x36);
      writecmd(0x80+y_pos);
      writecmd(0x80+x_pos);
      readdate(); //此处为什么要中上不知道为什么？？？？
      read_data1 = readdate(); //高八位!
      read_data2 = readdate(); //低八位！
      if(x_bit<8)
      {
            if(clour==0)
            {
                     dat1=read_data1|(1<<(7-x_bit));
            }
            else
            {
                     dat1=read_data1&~(1<<(7-x_bit));
            }
            dat2=read_data2;
      }
      else
      {
            dat1=read_data1;
            if(clour==0)
            {
                     dat2=read_data2|(1<<(15-x_bit));
            }

            else
            {
                     dat2=read_data2&~(1<<(15-x_bit));
            }
      }

      writecmd(0x36);
      writecmd(0x80+y_pos);
      writecmd(0x80+x_pos);
      writedate(dat1);
      writedate(dat2);
      writecmd(0x30);
}

//画直线X1行起点X2行终点 Y列 clour为0时画点为其它清除这个点
void Draw_zhi(uchar X1,uchar X2,uchar Y,uchar clour)
{
      uchar i,temp ;
      if(X1>X2) //X轴上，起点大于终点，交换数据
      {
            temp=X2;
            X2=X1;
            X1=temp;
      }
      for(i=X1;i<=X2;i++)
      {
            Draw_point(i,Y,clour);
      }
}
//画竖线 X行 Y1列起点点 Y2列终点 clour为0时画点为其它清除这个点
void Draw_shu(uchar X,uchar Y1,uchar Y2,uchar clour)
{
      uchar i ,temp;
      if(Y1>Y2) //X轴上，起点大于终点，交换数据
      {
            temp=Y2;
            Y2=Y1;
            Y1=temp;
      }
      for(i=Y1;i<=Y2;i++)
      {
            Draw_point(X,i,clour);
      }
}

/*******************************************
函数名称：Draw_line
功能：在整个屏幕上画一条线任一的角度都可以画线！！！！
参数：ptr--指向保存图片位置的指针
返回值：无
clour为0时画点为其它清除这个点
********************************************/

void Draw_line(uchar x0,uchar y0,uchar x1,uchar y1,uchar clour)
{
      int dx,dy; //定义X.Y轴上增加的变量值
      int sub;
      int temp; //起点、终点大小比较，交换数据时的中间变量
      uchar flag;
      if(x0>x1) //X轴上，起点大于终点，交换数据
      {
            temp=x1;
            x1=x0;
            x0=temp;
            temp=y1;
            y1=y0;
            y0=temp;
      }
      dx=x1-x0; //X轴方向上的增量
      dy=y1-y0; //Y轴方向上的增量
      if(dx==0)
      Draw_shu(x0,y0,y1,clour);
      if(dy==0)
      Draw_zhi(x0,x1,y0,clour);
      if(dy>0)
      flag=1;
      else
      flag=0;
      if((dx!=0)&&(dy!=0))
      {
            /* 布兰森汉姆(Bresenham)算法画线 */
            if(flag==1)
            {
                     if(dx>=dy) //靠近X轴
                     {
                              sub=2*dy-dx; //计算下个点的位置
                              while(x0!=x1)
                              {
                                    Draw_point(x0,y0,clour); //画起点
                                    x0++; // X轴上加1
                                    if(sub>0) // 判断下下个点的位置
                                    {
                                             y0++; // 为右上相邻点，即（x0+1,y0+1）
                                             sub+=2*dy-2*dx;
                                    }
                                    else
                                    sub+=2*dy; // 判断下下个点的位置
                              }
                              Draw_point(x0,y0,clour);
                     }
                     else
                     {
                              sub=2*dy-dx; //靠近Y轴
                              while(y0!=y1)
                              {
                                    Draw_point(x0,y0,clour); //画起点
                                    y0++;
                                    if(sub>0) //判断下下个点的位置
                                    {
                                             x0++;
                                             sub+=2*dx-2*dy;
                                    }
                                    else
                                    sub+=2*dx;
                              }
                              Draw_point(x0,y0,clour);
                     }
            }
            else
            {
                     dy=y0-y1;
                     if(dx>=dy) //靠近X轴
                     {
                              sub=2*dy-dx; //计算下个点的位置
                              while(x0!=x1)
                              {
                                    Draw_point(x0,y0,clour); //画起点
                                    x0++; // X轴上加1
                                    if(sub>0) // 判断下下个点的位置
                                    {
                                             y0--; // 为右上相邻点，即（x0+1,y0+1）
                                             sub+=2*dy-2*dx;
                                    }
                                    else
                                    sub+=2*dy; // 判断下下个点的位置
                              }
                              Draw_point(x0,y0,clour);
                     }
                     else
                     {
                              sub=2*dx-dy; //靠近Y轴
                              while(y0!=y1)
                              {
                                    Draw_point(x0,y0,clour); //画起点
                                    y0--;
                                    if(sub>0) //判断下下个点的位置
                                    {
                                             x0++;
                                             sub+=2*dx-2*dy;
                                    }
                                    else
                                    sub+=2*dx;
                              }
                              Draw_point(x0,y0,clour);
                     }
            }
      }
}

/****************************
//画任意线
功能：任意两点间的直线。根据硬件特点，实现加速。
* 入口参数：x0    直线起点所在行的位置
*       y0    直线起点所在列的位置
*       x1    直线终点所在行的位置
‘    y1    直线终点所在列的位置
说明：操作失败原因是指定地址超出缓冲区范围。
******************************
void GUI_Line8(uchar x0,uchar y0,uchar x1,uchar y1)
{
int temp;
int dx,dy;             //定义起点到终点的横、纵坐标增加值
int s1,s2,status,i;
int Dx,Dy,sub;

dx=x1-x0;
if(dx>=0)                //X的方向是增加的
  s1=1;
else                   //X的方向是降低的
  s1=-1;
dy=y1-y0;                //判断Y的方向是增加还是降到的
if(dy>=0)
  s2=1;
else
  s2=-1;

Dx=fabs(x1-x0);          //计算横、纵标志增加值的绝对值
Dy=fabs(y1-y0);
if(Dy>Dx)                //
  {                   //以45度角为分界线，靠进Y轴是status=1,靠近X轴是status=0
  temp=Dx;
  Dx=Dy;
  Dy=temp;
  status=1;
  }
else
  status=0;

//////////判断垂直线和水平线////////////
if(dx==0)                //横向上没有增量，画一条水平线
  Draw_zhi(x0,y0,y1,1);
if(dy==0)                //纵向上没有增量，画一条垂直线
  Draw_shu(x0,y0,x1,1);

//////////Bresenham算法画任意两点间的直线//////////
  sub=2*Dy-Dx;                //第1次判断下个点的位置
  for(i=0;i<Dx;i++)
  {
Draw_point(x0,y0,1);          //画点
if(sub>=0)
{
if(status==1)             //在靠近Y轴区，x值加1
   x0+=s1;
else                   //在靠近X轴区，y值加1
   y0+=s2;
sub-=2*Dx;                //判断下下个点的位置
}
if(status==1)
  y0+=s2;
else
x0+=s1;
sub+=2*Dy;

  }
}
*/
/*********************************************************

画圆算法
x0表示行的地址 y0表示列的地址 r表示圆的半径
****************************************/

void Draw_yuan(uchar x0,uchar y0,uchar r)

{

int a,b;

int di;

a=0;

b=r; //a=0,与b=r为圆的起始点！！然后往下走！！

di=3-2*r; //判断下个点位置的标志 ??

while(a<=b) //里面执行完了说明八分之一个圆画完啦！

{

Draw_point(x0-b,y0-a,0); //3

Draw_point(x0+b,y0-a,0); //0

Draw_point(x0-a,y0+b,0); //1

Draw_point(x0-b,y0-a,0); //7

Draw_point(x0-a,y0-b,0); //2

Draw_point(x0+b,y0+a,0); //4

Draw_point(x0+a,y0-b,0); //5

Draw_point(x0+a,y0+b,0); //6

Draw_point(x0-b,y0+a,0);

a++;

/***使用Bresenham算法画圆**/

if(di<0)

di +=4*a+6;

else

{

di+=10+4*(a-b);

b--;

}

Draw_point(x0+a,y0+b,0); //可在此处做想法！！！

}

}

void main()
{
      delayms(100);
      LCD_init();
      Clear_GDRAM();//必须清2遍彻底清除RAM内数据
      delayms(50);
      Clear_GDRAM();//必须清2遍彻底清除RAM内数据
      delayms(50);
      writecmd(0x01);//加上清楚命令
      delayms(50);
      while(1)
      {
            Draw_zhi(65,126,60,0);//直线
            Draw_shu(65,124,0,0);//竖线
            Draw_line(66,0,120,63,0);//画任意线
            Draw_line(66,0,120,30,0);//画任意线
            Draw_yuan(31,31,30);//左半屏画圆
            delayms(6000);
            Clear_GDRAM();
            delayms(60);
            Disp_HZ(0x90+2,hanz,5);//显示汉字
            Disp_HZ(0x98,hanz2,8);//显示汉字
            delayms(6000);
            writecmd(0x01);//加上清楚命令
            delayms(50);
            Draw_PM(logo);//显示图片
            delayms(6000);
            Clear_GDRAM();
            delayms(60);
      }
}

sunygd · 发表于 2019-1-21 13:14

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