計算機(jī)圖形學(xué)代碼_CS法直線段裁剪

1、這段代碼主要是用 CS法對一個直線段進(jìn)行裁剪。 運(yùn)行在 VC 環(huán)境下。typedef structfloat x,y;Point;typedef structunsigned all;unsigned left,right,top,bottom;OutCode;void CompOutCode(Point p,RECT* rect,OutCode *outCode)outCode-all=0; outCode-top=outCode-bottom=0; if(float)rect-bottom)outCode-top=1; outCode-all+=1;else iftop)outCode-b

2、ottom=1; outCode-all+=1; outCode-left=outCode-right=0; if(float)rect-right)outCode-right=1; outCode-all+=1;else ifleft)outCode-left=1; outCode-all+=1;void Cohen_SutherlandLineClip(Point p0,Point p1,RECT *rect,CDC* pDC) bool accept=false,done=false;OutCode outCode0,outCode1;OutCode *outCodeOut;Point

3、p;CompOutCode(p0,rect,&outCode0);CompOutCode(p1,rect,&outCode1);doif(!&!accept=done=true;else if(&!=0)done=true;elseifoutCodeOut=&outCode0;elseoutCodeOut=&outCode1;if(outCodeOut-left)=+ =(float)rect-left;else if(outCodeOut-top)=+ =(float)rect-top;else if(outCodeOut-right)=+ =(float)rect-right;else i

4、f(outCodeOut-bottom)=+ =(float)rect-bottom;if(outCodeOut-all=CompOutCode(p0,rect,&outCode0); elseCompOutCode(p1,rect,&outCode1);while(!done);if(accept)pDC-MoveTo(int),(int); pDC-LineTo(int),(int);void CCohen_SutherlandView:OnDraw(CDC* pDC)CCohen_SutherlandDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc);/ TODO: add draw code for native data here RECT rect=50,100,150,200; pDC-Rectangle(&rect);Poin