VTK第一篇之菜鳥入門——經(jīng)典的那個圓錐例子+本人幾天的感受.doc

VTK第一篇之菜鳥入門經(jīng)典的那個圓錐例子+本人幾天的感受 說到這個VTK，(o)，真是悲劇，本來老板是讓用OPENGL做東西的，博士師姐不知何故，提議用VTK做東西，遂老板就同意了。然后，咱的英語又不是很行，教材是英文的，所以很郁悶?？戳艘恍?，一知半解。但是不能不寫程序撒，要不然永遠不會。今天先把那個最小的例子貼上來，順便說說自己對VTK運作過程的理解吧。純屬自娛自樂，請勿拍磚！呃，咱這么冷清的博客，想要人拍可能還找不到人呢。1.開篇當然是引入頭文件啦，其實和OpenGL差不多，只是頭文件不同罷了。在數(shù)量上倒是多了不少，復(fù)雜的程序頭文件總是有一大堆的。#include vtkConeSource.h#include vtkPolyDataMapper.h#include vtkRenderWindow.h#include vtkCamera.h#include vtkActor.h#include vtkRenderer.hint main( int argc, char *argv )復(fù)制代碼2.創(chuàng)建和設(shè)置圓錐的代碼 vtkConeSource *cone = vtkConeSource:New();/cone就是圓錐，咱英語爛啊 cone-SetHeight( 3.0 ); cone-SetRadius( 1.0 ); cone-SetResolution( 10 );/十個側(cè)面組成的cone復(fù)制代碼3.Mapper？不解，只知道必須用的東西 / / In this example we terminate the pipeline with a mapper process object. / (Intermediate filters such as vtkShrinkPolyData could be inserted in / between the source and the mapper.) We create an instance of / vtkPolyDataMapper to map the polygonal data into graphics primitives. We / connect the output of the cone souece to the input of this mapper. / vtkPolyDataMapper *coneMapper = vtkPolyDataMapper:New(); coneMapper-SetInput( cone-GetOutput() );復(fù)制代碼4.Actor？還是不解，只知道也是不能少的，弄完這個程序之后，發(fā)現(xiàn)一環(huán)套一環(huán)的。 vtkActor *coneActor = vtkActor:New(); coneActor-SetMapper( coneMapper );復(fù)制代碼5.Render，貌似是渲染圖片了，感覺和MFC里面的VIEW差不多吧 vtkRenderer *ren1= vtkRenderer:New(); ren1-AddActor( coneActor ); ren1-SetBackground( 0.1, 0.2, 0.4 );復(fù)制代碼6.Renderwindow，顧名思義了 vtkRenderWindow *renWin = vtkRenderWindow:New(); renWin-AddRenderer( ren1 ); renWin-SetSize( 300, 300 );復(fù)制代碼7.顯示，順便讓圓錐轉(zhuǎn)動起來 / / Now we loop over 360 degreeees and render the cone each time. / int i; for (i = 0; i Render(); / rotate the active camera by one degree ren1-GetActiveCamera()-Azimuth( 1 ); 復(fù)制代碼8.把創(chuàng)建的對象都刪除，然后結(jié)束程序 cone-Delete(); coneMapper-Delete(); coneActor-Delete(); ren1-Delete(); renWin-Delete(); return 0;復(fù)制代碼由上面的這些代碼推斷這樣一個結(jié)論吧，可能不是很成熟。vtkR