1.5 KiB
Creating Widgets
Goal
In this tutorial you will learn how to
- Create your own widgets using WidgetAccessor and VTK.
- Show your widget in the visualization window.
Code
You can download the code from here . @includelineno samples/cpp/tutorial_code/viz/creating_widgets.cpp
Explanation
Here is the general structure of the program:
-
Extend Widget3D class to create a new 3D widget. @code{.cpp} class WTriangle : public viz::Widget3D { public: WTriangle(const Point3f &pt1, const Point3f &pt2, const Point3f &pt3, const viz::Color & color = viz::Color::white()); }; @endcode
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Assign a VTK actor to the widget. @code{.cpp} // Store this actor in the widget in order that visualizer can access it viz::WidgetAccessor::setProp(*this, actor); @endcode
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Set color of the widget. @code{.cpp} // Set the color of the widget. This has to be called after WidgetAccessor. setColor(color); @endcode
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Construct a triangle widget and display it in the window. @code{.cpp} /// Create a triangle widget WTriangle tw(Point3f(0.0,0.0,0.0), Point3f(1.0,1.0,1.0), Point3f(0.0,1.0,0.0), viz::Color::red());
/// Show widget in the visualizer window myWindow.showWidget("TRIANGLE", tw); @endcode
Results
Here is the result of the program.
