多边形数据由POINTS,VERTICES,LINES,POLYGONS或TRIANGLE_STRIPS部分定义。POINTS定义与我们看到的结构化网格数据集相同。VERTICES,LINES,POLYGONS或TRIANGLE_STRIPS关键字定义多边形数据集拓扑。 这些关键字中的每一个都需要两个参数:单元数n和单元列表大小的size。单元列表大小是表示列表所需的整数值的总数(即,每个单元上的...
莫比乌斯环-vtkTriangleStrip 1#ifndef INITIAL_OPENGL2#defineINITIAL_OPENGL3#include <vtkAutoInit.h>4VTK_MODULE_INIT(vtkRenderingOpenGL)5VTK_MODULE_INIT(vtkInteractionStyle)6VTK_MODULE_INIT(vtkRenderingFreeType)7#endif8#include <iostream>9usingnamespacestd;1011#include"vtkPolyDataMapper.h"12#include"vt...
在介绍 SetStrips 的用法之前,我们首先要了解三角形条带和连续三角形带的概念。 •三角形条带(Triangle Strips):三角形条带是指将连续的三角形连接起来形成的带状结构。在条带中的每个三角形共享两条边,这样可以减少绘制过程中的顶点数目,提高渲染效率。
在这个样例里,mapper的类型是vtkPolyDataMapper,也就是用类似点、线、多边形(Polygons)和三角形带(Triangle Strips)等几何图元进行渲染的。Mapper会结束可视化管线。在可视化子系统和图形子系统之间起到桥梁的作用。 Actor的属性。Actor里有一个类型为vtkProperty的实例,主要是用来控制Actor的显示属性。经常使用的属性是Ac...
// vtkPolyData represents a geometric structure consisting of vertices, lines, // polygons, and/or triangle strips vtkNew<vtkPolyData> polygon; polygon->SetPoints(points); polygon->SetLines(lines); // vtkPolyDataMapper is a class that maps polygonal data (i.e., vtkPolyData) // to graphics...
在这个样例里,mapper的类型是vtkPolyDataMapper,也就是用类似点、线、多边形(Polygons)和三角形带(Triangle Strips)等几何图元进行渲染的。Mapper会结束可视化管线。在可视化子系统和图形子系统之间起到桥梁的作用。 Actor的属性。Actor里有一个类型为vtkProperty的实例,主要是用来控制Actor的显示属性。经常使用的属性是Ac...
The only disadvantage to using triangle strips is that they require time to compute, so if your data is changing every time you render, it could actually be slower. Use a different filter or mapperThis is a tough issue. In VTK there are typically a couple of ways to solve any problem....
//# polyline, triangle, quad, pentagon, and triangle strip. vtkPoints *pts = vtkPoints::New(); pts->InsertPoint(0 ,0 ,0 ,0 ); pts->InsertPoint(1 ,0 ,1 ,0 ); pts->InsertPoint(2 ,0 ,2 ,0 ); pts->InsertPoint(3 ,1 ,0 ,0 ); pts->InsertPoint(4 ,1 ,1 ,0 ); pts...
(60.0);41//Specify the angle that defines a sharp edge.42//If the difference in angle across neighboring polygons is greater than this value,43//the shared edge is considered "sharp".444546//create triangle strips and/or poly-lines 为了更快的显示速度47vtkSmartPointer<vtkStripper> skin...
To provide satisfactory results, we decided to implement a specialized class to perform the cutting operation described previously. The filter crops polygonal data (vertices, lines and polylines, polygons, and triangle strips) positioned in a 2D plane with one or more loops. Both the loop and ...