图形图像软件使用说明

1、软件使用说明书1. 软件作者 QQ12087062822. 开发环境 visual studio 2005基于MFC编程平台3. 软件概述：实现一个简单的图形处理和图像显示，包含人机交互形式（包括菜单、工具栏、对话框响应，鼠标点击及拖动）。使用直线、圆、椭圆的几种经典扫描转换算法。软件可以移动图形的位置亦可拖动改变直线，矩形等的大小，使用橡皮擦小工具可以清除选中图形，动态重绘的实现。还有些细节操作不便赘述。由于时间短暂，个人能力有限，软件只做到这种程度，程序中不免有bug，希望学弟们再接再厉不断完善。其中直线扫描算法用到dda,bresenham,中点圆算法等(部分算法函数为void CCan

2、vas:DDALine(CDC* pDC,int fx,int fy,int sx,int sy),void CCanvas:BresenhamLine(CDC * pDC, int x1, int y1, int x2, int y2),void CCanvas:MidpointCircle(CDC *pDC,int radius,int px,int py),void CCanvas:BresenhamCircle(CDC *pDC,int radius, int px, int py),void CCanvas:Midponitellispe(CDC *pDC,int x0,int y0

3、,int x1,int y1)。4. 软件操作简单描述(1)点击file菜单,在下拉菜单点击open，打开文件选择框载入图像，如下图所示：(1) 点击view菜单，在下拉菜单点击toolbar,statebar,控制工具栏，状态栏的显示。(2) 点击draw菜单，在下拉菜单点击line，实现画直线操作，效果如下：(3) 点击draw菜单，在下拉菜单点击circle，实现画圆操作，效果如下：(5) 点击draw菜单，在下拉菜单点击rectangle，实现画矩形操作，效果如下：(6)点击draw菜单，在下拉菜单点击ellipse，实现画椭圆操作，效果如下： (7) 点击clear菜单，弹出对话框，

4、实现了窗口间的交互，选择是否清空已画内容，如图： (8) 左图为软件工具栏实现的操作依次为：画矩形，画圆，画直线，橡皮擦，画椭圆，改变图形颜色为红色，改变图形颜色为绿色，改变图形颜色为蓝色，弹出颜色选择框改变图形颜色。5.软件的综合应用，效果如下：4. 部分算法void CCanvas:DDALine(CDC* pDC,int fx,int fy,int sx,int sy)int dx=sx-fx;int dy=sy-fy;double steps;if(abs(dx)abs(dy)steps=abs(dx);elsesteps=abs(dy);if(steps=0)pDC-SetPixel

5、(fx,fy,RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue);return;double xincrem=dx/steps;double yincrem=dy/steps;double x=fx,y=fy;for(int i=0;iSetPixel(int)(x+0.5),(int)(y+0.5),RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue);x+=xincrem;y+=yincrem;void CCanvas:BresenhamLine(CDC * pDC, int x1, int y1, int x2

6、, int y2) int dx = x2 - x1; int sx = 1; int dy = y2 - y1; int sy = 1; if (dx 0) sx = -1; dx = -dx; if (dy 0) sy = -1; dy = -dy; dx = dx 1; /进位即*2 dy = dy SetPixel(x1, y1,RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue); if (dy 1); while (x1 != x2) if (fraction = 0) y1 += sy; fraction -= dx; fraction +=

7、 dy; x1 += sx; pDC-SetPixel(x1, y1,RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue); else int fraction = dx - (dy1); while (y1 != y2) if (fraction = 0) x1 += sx; fraction -= dy; fraction += dx; y1 += sy; pDC-SetPixel(x1, y1,RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue); void CCanvas:MidpointCircle(CDC

8、*pDC,int radius,int px,int py)/CDC *pDC=GetDC();int x=0; int y=radius;int d=1-radius;pDC-SetPixel(x+px,y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(y+px,x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue); pDC-SetPixel(-y+px,x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel

9、(x+px,-y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(-x+px,-y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(-y+px,-x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(y+px,-x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(-x+px,y+py,RGB(m_dColorRe

10、d,m_dColorGreen,m_dColorBlue);while (y = x) if (d SetPixel(x+px,y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(y+px,x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue); pDC-SetPixel(-y+px,x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(x+px,-y+py,RGB(m_dColorRed,m_dColorGre

11、en,m_dColorBlue);pDC-SetPixel(-x+px,-y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(-y+px,-x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(y+px,-x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(-x+px,y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);/ReleaseD

12、C(pDC);void CCanvas:BresenhamCircle(CDC *pDC,int radius, int px, int py)/CDC *pDC=GetDC();int x=0; int y=radius;int d1=(x+1)*(x+1)+y*y-radius*radius; int d2=radius*radius-(x+1)*(x+1)-(y-1)*(y-1);int d=d1-d2;pDC-SetPixel(x+px,y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(y+px,x+py,RGB

13、(m_dColorRed,m_dColorGreen,m_dColorBlue); pDC-SetPixel(-y+px,x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(x+px,-y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(-x+px,-y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(-y+px,-x+py,RGB(m_dColorRed,m_dColorGree

14、n,m_dColorBlue);pDC-SetPixel(y+px,-x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(-x+px,y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);while (y = x) if (d = 0) y-;x+; d1=(x+1)*(x+1)+y*y-radius*radius; d2=radius*radius-(x+1)*(x+1)-(y-1)*(y-1); d=d1-d2;pDC-SetPixel(x+px,y+py,RGB(m_dCo

15、lorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(y+px,x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue); pDC-SetPixel(-y+px,x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(x+px,-y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(-x+px,-y+py,RGB(m_dColorRed,m_dColorGreen,m_dCol

16、orBlue);pDC-SetPixel(-y+px,-x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(y+px,-x+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);pDC-SetPixel(-x+px,y+py,RGB(m_dColorRed,m_dColorGreen,m_dColorBlue);/ReleaseDC(pDC);void CCanvas:Midponitellispe(CDC *pDC,int x0,int y0,int x1,int y1) int

17、a=abs(x1-x0),b=abs(y1-y0),x,y,color=0; /定义中心在（x0,y0），长半轴为a，短半轴为b. float d1,d2; x=0;y=b; d1=b*b+a*a*(-b+0.25); /判别式 pDC-SetPixel(x+x0,y+y0,RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue); pDC-SetPixel(-x+x0,-y+y0,RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue); pDC-SetPixel(-x+x0,y+y0,RGB(m_dColorRed ,m_

18、dColorGreen ,m_dColorBlue); pDC-SetPixel(x+x0,-y+y0,RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue); while(b*b*(x+1)a*a*(y-0.5) if(d1SetPixel(x+x0,y+y0,RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue); pDC-SetPixel(-x+x0,-y+y0,RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue); pDC-SetPixel(-x+x0,y+y0,RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue); pDC-SetPixel(x+x0,-y+y0,RGB(m_dColorRed ,m_dColorGreen ,m_dColorBlue); d2=b*b*(x+0.5)*(x+0.5)+a*a*(y-1)*(y-1)-a*a*b*b; whil