--- /dev/null
+/**
+ * @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 TriangleWidget : public viz::Widget3D
+{
+ public:
+ TriangleWidget(const Point3f &pt1, const Point3f &pt2, const Point3f &pt3, const viz::Color & color = viz::Color::white());
+};
+
+/**
+ * @function TriangleWidget::TriangleWidget
+ * @brief Constructor
+ */
+TriangleWidget::TriangleWidget(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();
+ mapper->SetInput(polyData);
+
+ 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);
+}
+
+/**
+ * @function main
+ */
+int main()
+{
+ help();
+
+ /// Create a window
+ viz::Viz3d myWindow("Creating Widgets");
+
+ /// Create a triangle widget
+ TriangleWidget tw(Point3f(0.0,0.0,0.0), Point3f(1.0,1.0,1.0), Point3f(0.0,1.0,0.0));
+
+ /// Show widget in the visualizer window
+ myWindow.showWidget("TRIANGLE", tw);
+
+ /// Start event loop
+ myWindow.spin();
+
+ return 0;
+}
+/**
+ * @file launching_viz.cpp
+ * @brief Launching visualization window
+ * @author Ozan Cagri Tonkal
+ */
+
#include <opencv2/viz.hpp>
#include <iostream>
using namespace cv;
using namespace std;
+/**
+ * @function help
+ * @brief Display instructions to use this tutorial program
+ */
void help()
{
cout
<< "This program shows how to launch a 3D visualization window. You can stop event loop to continue executing. "
<< "You can access the same window via its name. You can run event loop for a given period of time. " << endl
<< "Usage:" << endl
- << "./window_demo" << endl
+ << "./launching_viz" << endl
<< endl;
}
+/**
+ * @function main
+ */
int main()
{
help();
sameWindow.spinOnce(1, true);
while(!sameWindow.wasStopped())
{
- /// Interact with window
-
- /// Event loop for 1 millisecond
- sameWindow.spinOnce(1, true);
+ /// Interact with window
+
+ /// Event loop for 1 millisecond
+ sameWindow.spinOnce(1, true);
}
/// Once more event loop is stopped