mirror of
https://github.com/opencv/opencv.git
synced 2024-12-29 20:48:39 +08:00
114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
/**
|
|
* @file creating_widgets.cpp
|
|
* @brief Creating custom widgets using VTK
|
|
* @author Ozan Cagri Tonkal
|
|
*/
|
|
|
|
#include <opencv2/viz.hpp>
|
|
#include <opencv2/viz/widget_accessor.hpp>
|
|
#include <iostream>
|
|
|
|
#include <vtkPoints.h>
|
|
#include <vtkTriangle.h>
|
|
#include <vtkCellArray.h>
|
|
#include <vtkPolyData.h>
|
|
#include <vtkPolyDataMapper.h>
|
|
#include <vtkIdList.h>
|
|
#include <vtkActor.h>
|
|
#include <vtkProp.h>
|
|
|
|
using namespace cv;
|
|
using namespace std;
|
|
|
|
/**
|
|
* @function help
|
|
* @brief Display instructions to use this tutorial program
|
|
*/
|
|
void help()
|
|
{
|
|
cout
|
|
<< "--------------------------------------------------------------------------" << endl
|
|
<< "This program shows how to create a custom widget. You can create your own "
|
|
<< "widgets by extending Widget2D/Widget3D, and with the help of WidgetAccessor." << endl
|
|
<< "Usage:" << endl
|
|
<< "./creating_widgets" << endl
|
|
<< endl;
|
|
}
|
|
|
|
/**
|
|
* @class TriangleWidget
|
|
* @brief Defining our own 3D Triangle widget
|
|
*/
|
|
class WTriangle : public viz::Widget3D
|
|
{
|
|
public:
|
|
WTriangle(const Point3f &pt1, const Point3f &pt2, const Point3f &pt3, const viz::Color & color = viz::Color::white());
|
|
};
|
|
|
|
/**
|
|
* @function TriangleWidget::TriangleWidget
|
|
* @brief Constructor
|
|
*/
|
|
WTriangle::WTriangle(const Point3f &pt1, const Point3f &pt2, const Point3f &pt3, const viz::Color & color)
|
|
{
|
|
// Create a triangle
|
|
vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
|
|
points->InsertNextPoint(pt1.x, pt1.y, pt1.z);
|
|
points->InsertNextPoint(pt2.x, pt2.y, pt2.z);
|
|
points->InsertNextPoint(pt3.x, pt3.y, pt3.z);
|
|
|
|
vtkSmartPointer<vtkTriangle> triangle = vtkSmartPointer<vtkTriangle>::New();
|
|
triangle->GetPointIds()->SetId(0,0);
|
|
triangle->GetPointIds()->SetId(1,1);
|
|
triangle->GetPointIds()->SetId(2,2);
|
|
|
|
vtkSmartPointer<vtkCellArray> cells = vtkSmartPointer<vtkCellArray>::New();
|
|
cells->InsertNextCell(triangle);
|
|
|
|
// Create a polydata object
|
|
vtkSmartPointer<vtkPolyData> polyData = vtkSmartPointer<vtkPolyData>::New();
|
|
|
|
// Add the geometry and topology to the polydata
|
|
polyData->SetPoints(points);
|
|
polyData->SetPolys(cells);
|
|
|
|
// Create mapper and actor
|
|
vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
|
|
#if VTK_MAJOR_VERSION <= 5
|
|
mapper->SetInput(polyData);
|
|
#else
|
|
mapper->SetInputData(polyData);
|
|
#endif
|
|
|
|
vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
|
|
actor->SetMapper(mapper);
|
|
|
|
// Store this actor in the widget in order that visualizer can access it
|
|
viz::WidgetAccessor::setProp(*this, actor);
|
|
|
|
// Set the color of the widget. This has to be called after WidgetAccessor.
|
|
setColor(color);
|
|
}
|
|
|
|
/**
|
|
* @function main
|
|
*/
|
|
int main()
|
|
{
|
|
help();
|
|
|
|
/// Create a window
|
|
viz::Viz3d myWindow("Creating Widgets");
|
|
|
|
/// 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);
|
|
|
|
/// Start event loop
|
|
myWindow.spin();
|
|
|
|
return 0;
|
|
}
|