📄 gui_basic.c
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xx++;
draw_x0++;
draw_x1--;
draw_x2++;
draw_x3--;
draw_y4++;
draw_y5++;
draw_y6--;
draw_y7--;
/* 要判断当前点是否在有效范围内 */
if( (draw_x0<=GUI_LCM_XMAX)&&(draw_y0>=0) )
{
point.x = draw_x0;
point.y = draw_y0;
LCDDrawPoint( &point );
}
if( (draw_x1>=0)&&(draw_y1>=0) )
{
point.x = draw_x1;
point.y = draw_y1;
LCDDrawPoint( &point );
}
/* 第二点水直线填充(下半圆的点) */
if(draw_x1>=0)
{ /* 设置填充线条起始点fill_x0 */
fill_x0 = draw_x1;
/* 设置填充线条起始点fill_y0 */
fill_y0 = draw_y1;
if(fill_y0>GUI_LCM_YMAX) fill_y0 = GUI_LCM_YMAX;
if(fill_y0<0) fill_y0 = 0;
/* 设置填充线条结束点fill_x1 */
fill_x1 = pCircle->x*2 - draw_x1;
if(fill_x1>GUI_LCM_XMAX) fill_x1 = GUI_LCM_XMAX;
line.xs = fill_x0;
line.xe = fill_x1;
line.ys = line.ye = fill_y0;
LCDDrawHRLine( &line );
}
if( (draw_x2<=GUI_LCM_XMAX)&&(draw_y2<=GUI_LCM_YMAX) )
{
point.x = draw_x2;
point.y = draw_y2;
LCDDrawPoint( &point );
}
if( (draw_x3>=0)&&(draw_y3<=GUI_LCM_YMAX) )
{
point.x = draw_x3;
point.y = draw_y3;
LCDDrawPoint( &point );
}
/* 第四点垂直线填充(上半圆的点) */
if(draw_x3>=0)
{ /* 设置填充线条起始点fill_x0 */
fill_x0 = draw_x3;
/* 设置填充线条起始点fill_y0 */
fill_y0 = draw_y3;
if(fill_y0>GUI_LCM_YMAX) fill_y0 = GUI_LCM_YMAX;
if(fill_y0<0) fill_y0 = 0;
/* 设置填充线条结束点fill_x1 */
fill_x1 = pCircle->x*2 - draw_x3;
if(fill_x1>GUI_LCM_XMAX) fill_x1 = GUI_LCM_XMAX;
line.xs = fill_x0;
line.xe = fill_x1;
line.ys = line.ye = fill_y0;
LCDDrawHRLine( &line );
}
if( (draw_x4<=GUI_LCM_XMAX)&&(draw_y4>=0) )
{
point.x = draw_x4;
point.y = draw_y4;
LCDDrawPoint( &point );
}
if( (draw_x5>=0)&&(draw_y5>=0) )
{
point.x = draw_x5;
point.y = draw_y5;
LCDDrawPoint( &point );
}
/* 第六点垂直线填充(上半圆的点) */
if(draw_x5>=0)
{ /* 设置填充线条起始点fill_x0 */
fill_x0 = draw_x5;
/* 设置填充线条起始点fill_y0 */
fill_y0 = draw_y5;
if(fill_y0>GUI_LCM_YMAX) fill_y0 = GUI_LCM_YMAX;
if(fill_y0<0) fill_y0 = 0;
/* 设置填充线条结束点fill_x1 */
fill_x1 = pCircle->x*2 - draw_x5;
if(fill_x1>GUI_LCM_XMAX) fill_x1 = GUI_LCM_XMAX;
line.xs = fill_x0;
line.xe = fill_x1;
line.ys = line.ye = fill_y0;
LCDDrawHRLine( &line );
}
if( (draw_x6<=GUI_LCM_XMAX)&&(draw_y6<=GUI_LCM_YMAX) )
{
point.x = draw_x6;
point.y = draw_y6;
LCDDrawPoint( &point );
}
if( (draw_x7>=0)&&(draw_y7<=GUI_LCM_YMAX) )
{
point.x = draw_x7;
point.y = draw_y7;
LCDDrawPoint( &point );
}
/* 第八点垂直线填充(上半圆的点) */
if(draw_x7>=0)
{ /* 设置填充线条起始点fill_x0 */
fill_x0 = draw_x7;
/* 设置填充线条起始点fill_y0 */
fill_y0 = draw_y7;
if(fill_y0>GUI_LCM_YMAX) fill_y0 = GUI_LCM_YMAX;
if(fill_y0<0) fill_y0 = 0;
/* 设置填充线条结束点fill_x1 */
fill_x1 = pCircle->x*2 - draw_x7;
if(fill_x1>GUI_LCM_XMAX) fill_x1 = GUI_LCM_XMAX;
line.xs = fill_x0;
line.xe = fill_x1;
line.ys = line.ye = fill_y0;
LCDDrawHRLine( &line );
}
}
}
/*
================================================================================
Name: GUI_DrawEllipse( )
Function: Display a ellipse at a special area
Input: -pCycle, A pinter point to a ellipse structure
Output: None
Author: LiYong
Date : 2008.08.09
================================================================================
*/
void GUI_DrawEllipse( ELLIPSE* pEllipse )
{
INT32S draw_x0, draw_y0; // 刽图点坐标变量
INT32S draw_x1, draw_y1;
INT32S draw_x2, draw_y2;
INT32S draw_x3, draw_y3;
INT32S xx, yy; // 画图控制变量
INT32S center_x, center_y; // 椭圆中心点坐标变量
INT32S radius_x, radius_y; // 椭圆的半径，x轴半径和y轴半径
INT32S radius_xx, radius_yy; // 半径乘平方值
INT32S radius_xx2, radius_yy2; // 半径乘平方值的两倍
INT32S di; // 定义决策变量
POINT point;
point.Color = pEllipse->Color;
/* 参数过滤 */
if( (pEllipse->xs == pEllipse->xe ) ||
(pEllipse->ys == pEllipse->ye ) ) return;
/* 计算出椭圆中心点坐标 */
center_x = (pEllipse->xs + pEllipse->xe) >> 1;
center_y = (pEllipse->ys + pEllipse->ye) >> 1;
/* 计算出椭圆的半径，x轴半径和y轴半径 */
if(pEllipse->xs > pEllipse->xe)
{ radius_x = (pEllipse->xs - pEllipse->xe) >> 1;
}
else
{ radius_x = (pEllipse->xe - pEllipse->xs) >> 1;
}
if(pEllipse->ys > pEllipse->ye)
{ radius_y = (pEllipse->ys - pEllipse->ye) >> 1;
}
else
{ radius_y = (pEllipse->ye - pEllipse->ys) >> 1;
}
/* 计算半径平方值 */
radius_xx = radius_x * radius_x;
radius_yy = radius_y * radius_y;
/* 计算半径平方值乘2值 */
radius_xx2 = radius_xx<<1;
radius_yy2 = radius_yy<<1;
/* 初始化画图变量 */
xx = 0;
yy = radius_y;
di = radius_yy2 + radius_xx - radius_xx2*radius_y ; // 初始化决策变量
/* 计算出椭圆y轴上的两个端点坐标，作为作图起点 */
draw_x0 = draw_x1 = draw_x2 = draw_x3 = center_x;
draw_y0 = draw_y1 = center_y + radius_y;
draw_y2 = draw_y3 = center_y - radius_y;
point.x = draw_x0;
point.y = draw_y0;
LCDDrawPoint( &point );
point.x = draw_x2;
point.y = draw_y2;
LCDDrawPoint( &point ); // 画y轴上的两个端点
while( (radius_yy*xx) < (radius_xx*yy) )
{ if(di<0)
{ di+= radius_yy2*(2*xx+3);
}
else
{ di += radius_yy2*(2*xx+3) + 4*radius_xx - 4*radius_xx*yy;
yy--;
draw_y0--;
draw_y1--;
draw_y2++;
draw_y3++;
}
xx ++; // x轴加1
draw_x0++;
draw_x1--;
draw_x2++;
draw_x3--;
point.x = draw_x0;
point.y = draw_y0;
LCDDrawPoint( &point );
point.x = draw_x1;
point.y = draw_y1;
LCDDrawPoint( &point );
point.x = draw_x2;
point.y = draw_y2;
LCDDrawPoint( &point );
point.x = draw_x3;
point.y = draw_y3;
LCDDrawPoint( &point );
}
di = radius_xx2*(yy-1)*(yy-1) + radius_yy2*xx*xx + radius_yy + radius_yy2*xx - radius_xx2*radius_yy;
while(yy>=0)
{ if(di<0)
{ di+= radius_xx2*3 + 4*radius_yy*xx + 4*radius_yy - 2*radius_xx2*yy;
xx ++; // x轴加1
draw_x0++;
draw_x1--;
draw_x2++;
draw_x3--;
}
else
{ di += radius_xx2*3 - 2*radius_xx2*yy;
}
yy--;
draw_y0--;
draw_y1--;
draw_y2++;
draw_y3++;
point.x = draw_x0;
point.y = draw_y0;
LCDDrawPoint( &point );
point.x = draw_x1;
point.y = draw_y1;
LCDDrawPoint( &point );
point.x = draw_x2;
point.y = draw_y2;
LCDDrawPoint( &point );
point.x = draw_x3;
point.y = draw_y3;
LCDDrawPoint( &point );
}
}
/*
================================================================================
Name: GUI_DrawEllipseFill( )
Function: Display a ellipse at a special area and fill its area
Input: -pCycle, A pinter point to a ellipse structure
Output: None
Author: LiYong
Date : 2008.08.09
================================================================================
*/
void GUI_DrawEllipseFill( ELLIPSE* pEllipse )
{
INT32S draw_x0, draw_y0; // 刽图点坐标变量
INT32S draw_x1, draw_y1;
INT32S draw_x2, draw_y2;
INT32S draw_x3, draw_y3;
INT32S xx, yy; // 画图控制变量
INT32S center_x, center_y; // 椭圆中心点坐标变量
INT32S radius_x, radius_y; // 椭圆的半径，x轴半径和y轴半径
INT32S radius_xx, radius_yy; // 半径乘平方值
INT32S radius_xx2, radius_yy2; // 半径乘平方值的两倍
INT32S di; // 定义决策变量
POINT point;
LINE line;
point.Color = pEllipse->Color;
line.Color = pEllipse->Color;
/* 参数过滤 */
if( (pEllipse->xs==pEllipse->xe) ||
(pEllipse->ys==pEllipse->ye) ) return;
/* 计算出椭圆中心点坐标 */
center_x = (pEllipse->xs + pEllipse->xe) >> 1;
center_y = (pEllipse->ys + pEllipse->ye) >> 1;
/* 计算出椭圆的半径，x轴半径和y轴半径 */
if(pEllipse->xs > pEllipse->xe)
{
radius_x = (pEllipse->xs - pEllipse->xe) >> 1;
}
else
{
radius_x = (pEllipse->xe - pEllipse->xs) >> 1;
}
if(pEllipse->ys > pEllipse->ye)
{
radius_y = (pEllipse->ys - pEllipse->ye) >> 1;
}
else
{
radius_y = (pEllipse->ye - pEllipse->ys) >> 1;
}
/* 计算半径乘平方值 */
radius_xx = radius_x * radius_x;
radius_yy = radius_y * radius_y;
/* 计算半径乘4值 */
radius_xx2 = radius_xx<<1;
radius_yy2 = radius_yy<<1;
/* 初始化画图变量 */
xx = 0;
yy = radius_y;
di = radius_yy2 + radius_xx - radius_xx2*radius_y ; // 初始化决策变量
/* 计算出椭圆y轴上的两个端点坐标，作为作图起点 */
draw_x0 = draw_x1 = draw_x2 = draw_x3 = center_x;
draw_y0 = draw_y1 = center_y + radius_y;
draw_y2 = draw_y3 = center_y - radius_y;
point.x = draw_x0;
point.y = draw_y0;
LCDDrawPoint( &point );
point.x = draw_x2;
point.y = draw_y2;
LCDDrawPoint( &point );// 画y轴上的两个端点
while( (radius_yy*xx) < (radius_xx*yy) )
{ if(di<0)
{ di+= radius_yy2*(2*xx+3);
}
else
{ di += radius_yy2*(2*xx+3) + 4*radius_xx - 4*radius_xx*yy;
yy--;
draw_y0--;
draw_y1--;
draw_y2++;
draw_y3++;
}
xx ++; // x轴加1
draw_x0++;
draw_x1--;
draw_x2++;
draw_x3--;
point.x = draw_x0;
point.y = draw_y0;
LCDDrawPoint( &point );
point.x = draw_x1;
point.y = draw_y1;
LCDDrawPoint( &point );
point.x = draw_x2;
point.y = draw_y2;
LCDDrawPoint( &point );
point.x = draw_x3;
point.y = draw_y3;
LCDDrawPoint( &point );
/* 若y轴已变化，进行填充 */
if(di>=0)
{
line.xs = draw_x0;
line.xe = draw_x1;
line.ys = line.ye = draw_y0;
LCDDrawHRLine( &line );
line.xs = draw_x2;
line.xe = draw_x3;
line.ys = line.ye = draw_y2;
LCDDrawHRLine( &line );
}
}
di = radius_xx2*(yy-1)*(yy-1) + radius_yy2*xx*xx + radius_yy +
radius_yy2*xx - radius_xx2*radius_yy;
while(yy>=0)
{ if(di<0)
{ di+= radius_xx2*3 + 4*radius_yy*xx + 4*radius_yy - 2*radius_xx2*yy;
xx ++; // x轴加1
draw_x0++;
draw_x1--;
draw_x2++;
draw_x3--;
}
else
{ di += radius_xx2*3 - 2*radius_xx2*yy;
}
yy--;
draw_y0--;
draw_y1--;
draw_y2++;
draw_y3++;
point.x = draw_x0;
point.y = draw_y0;
LCDDrawPoint( &point );
point.x = draw_x1;
point.y = draw_y1;
LCDDrawPoint( &point );
point.x = draw_x2;
point.y = draw_y2;
LCDDrawPoint( &point );
point.x = draw_x3;
point.y = draw_y3;
LCDDrawPoint( &point );
/* y轴已变化，进行填充 */
line.xs = draw_x0;
line.xe = draw_x1;
line.ys = line.ye = draw_y0;
LCDDrawHRLine( &line );
line.xs = draw_x2;
line.xe = draw_x3;
line.ys = line.ye = draw_y2;
LCDDrawHRLine( &line );
}
}
/*
================================================================================
Name: GUI_Inital( )
Function: Initialize GUI with single color
Input: -Color, Initialize color
Output: None
Author: LiYong
Date : 2008.08.09
================================================================================
*/
void GUI_Inital( TCOLOR Color )
{
DOLLOP dollop;
dollop.xs = 0;
dollop.xe = GUI_LCM_XMAX;
dollop.ys = 0;
dollop.ye = GUI_LCM_YMAX;
dollop.Color = Color;
LCDDrawDollop( &dollop );
}
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