如何获取点数据的边界框? [英] How do I get the bounding box of point data?

问题描述

如何获取数据集的范围?也称为数据的边界框.使用 StructuredPointsReader 读取数据.

How do I get the range of the data set? Also known as the bounding box for the data. The data is read with the StructuredPointsReader.

推荐答案

因为 vtkStructuredPoints(vtkStructuredPointsReader 上的 GetOutput() 类型)是 vtkDataSet 的子类，所以可以使用 vtkDataSet 的 GetBounds(double[6]) 函数.下面是一个例子:

Because vtkStructuredPoints (the type of GetOutput() on a vtkStructuredPointsReader) is a subclass of vtkDataSet, you can use the GetBounds(double[6]) function of vtkDataSet. Here is an example:

  double bounds[6];
  structuredPointsReader->Update();
  structuredPointsReader->GetOutput()->GetBounds(bounds);

  std::cout  << "xmin: " << bounds[0] << " " 
             << "xmax: " << bounds[1] << std::endl
             << "ymin: " << bounds[2] << " " 
             << "ymax: " << bounds[3] << std::endl
             << "zmin: " << bounds[4] << " " 
             << "zmax: " << bounds[5] << std::endl;

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