直线段裁剪:需要判断线段与裁剪矩形的位置关系,有多种算法: 1)Cohen-Sutherland算法; 2)梁有栋-Barsky算法; 3)Nicholl-Lee-Nicholl算法; 有的文献会通过对象与观察体的位置,严格区分裁剪(clipping)与剔除(culling). 裁剪,指对象与观察体边界相交;剔除,指对象完全位于观察体外. Cohen-Sutherland线段裁剪算法 基本思想...
Cohen-Sutherland直线裁剪算法 在二维观察中,需要在观察坐标系下根据窗口大小对二维图形进行裁剪(clipping),只将位于窗口内的图形变换到视区输出。直线段裁剪是二维图形裁剪的基础,裁剪的实质是判断直线段是否与窗口相交,如相交则进一步确定直线段上位于窗口内的部分。 编码原理 Cohen-Sutherland直线段裁剪算法是最早流行的...
publicfinalclassClipping{privatestaticfinalintINSIDE =0;privatestaticfinalintLEFT =1;privatestaticfinalintRIGHT =2;privatestaticfinalintBOTTOM =4;privatestaticfinalintTOP =8;privatedoublexMin;privatedoubleyMin;privatedoublexMax;privatedoubleyMax;publicClipping() { }publicClipping(Rectangle2D clip) { setCli...
Cohen–Sutherland是一个线段裁剪算法 原理 将窗口区域分为9个部分,每个部分给一个区域码,然后计算线段两端端点的区域码,根据区域码来选择抛弃线段 Paste_Image.png 两端点都在视口区域内,区域码相或为0,接受 两端点至少共享一个不可见区域,区域码相与不为1,拒绝 实现 typedefintOutCode;constintINSIDE=0;// 0000...
Cohen Sutherland裁剪算法 //LineClippingView.cpp /*………*/ #defineXL100 #defineXR300 #defineYT100 #defineYB250 structCODE { inta3; inta2; inta1; inta0; }; voidencode(CPointptset[],inti,CODE&code1,CODE&code2,int&c1,int&c2); //……… voidCLineClippingView::OnDraw(CDC*pD...
(x > 0) return 1; else return 0; } // CohenSutherLand LineClipping Algorithm As Described in theory. // This will clip the lines as per window boundaries. void clip(struct lines mylines) { // arrays will store bits // Here bits implies initial Point whereas bite implies end points ...
其中比较著名的有:Cohen-Sutherland算法、中点分割算法、Liang-Barsky算法、Sobkow-Pospisil-Yang算法,及Nicholl-Lee-Ncholl算法等。 2 直线裁剪的基本原理 图1所示的为直线与窗口边界之间可能出现的几种关系。可以通过检查直线的两个端点是否在窗口之确定如何对此直线裁剪。如果一直线的两个端点均在窗口边界之(如图1中...
Here you will learn about liang barsky line clipping algorithm in C and C++. 在这里,您将了解C和C ++中的liang barsky线裁剪算法。 This Algorithm was developed by Liang and Barsky. It is used for line clipping as i... 多边形裁剪:Sutherland-Hodgman算法 ...
opencvcomputer-visiongeosciencecohen-sutherland UpdatedAug 2, 2021 Python asjadnaqvi/stata-clipgeo Sponsor Star5 Code Issues Pull requests Discussions Stata program for clipping polyline and polygon shapefiles on a bounding box mapmapsadostatapolygoncohen-sutherlandclipping-algorithm ...
1. Cohen-sutherland line clipping algorithm in javascript 2. Sutherland-Hodgman polygon clipping algorithm in javascript. cohen-hogman polygon clipping in action I believe the code is pretty readable – I had commented lavishly. Save them as html files, open in a browser, and keep clicking left...