Simple Unit Test Project Let’s create a new unit test project firstly. Write our test functions in feild private Q_SLOTS for the class. tst_string.cpp: #include <QString> #include <QtTest> class String : public QObject { Q_OBJECT public: String(); private Q_SLOTS: void Read more…
accumulate Interval algorithm accumulate supports custom calculate method to count elemeints in the special range. We can use it to get summary, multiple, average and etc of some elements, it’s very convenient and powerful. The syntax and usage example are Read more…
count STL algorithm count can help us to count the elements that are equal to value.Its syntax is like the following form: C++ template typename iterator_traits::difference_type count( InputIt first, InputIt last, const T &value ); Example: C++ #include #include #include Read more…
The article shows how to use vtkViewUpdater to update different views when the selections changed. Relevant development environment: VTK-8.1.1; Qt 5.11.2 (x86_64-little_endian-lp64 shared (dynamic) release build; Clang 8.1.0 (clang-802.0.42) (Apple)) on “cocoa”; macOS 10.14 [darwin version 18.5.0]; #include <QApplication> #include Read more…
Here are some notes about how to create, change , and plot data stored by lists. Many examples come from the book An Elementary Introduction To The Wolfram Language. Make a plot of the first 10 squares, starting at 1. Read more…
Initial developing environment: “C:Program Files (x86)Microsoft Visual Studio 12.0VCvcvarsall.bat” x86 Use cmake to generate a project file. E:projectprivatedoubleView2>cmake ./ — Building for: Visual Studio 16 2019 — Selecting Windows SDK version 10.0.17763.0 to target Windows 10.0.17134. — The C compiler Read more…
I wanted to explore vtkPlaneSource’s interfaces SetPoint1 and SetPoint2 with visible 3D Axes. It’s awkward to find that it’s difficult to control plane’s shape by interfaces SetPoint1 and SetPoint2 directly. So I used vtkAxesActor to show three axes in the Read more…
The algorithm copy_if is useful, it can help us to get all elements that meet special conditions. C++ template OutputIt copy_if( InputIt first, InputIt last, OutputIt d_first, UnaryPredicate pred ); Possible implement: C++ template OutputIt copy_if(InputIt first, InputIt last, OutputIt Read more…
Print debug info by vtk macro How to show vtk object’s debug information? I introduce how to show vtk object’s debug information by the custom class which inherits vtkPolyDataAlgorithm, relevant article: 【VTK】Create source class which is derived from vtkPolyDataAlgorithm We Read more…