//绘制文本
#include<vtkRenderer.h>
#include<vtkPolyDataMapper.h>
#include<vtkActor.h>
#include<vtkRenderWindow.h>
#include<vtkPolyDataMapper.h>
#include<vtkFollower.h>
#include<vtkVectorText.h>
#include<vtkAxes.h>
#include<vtkProperty.h>
#include<vtkNamedColors.h>

#include <vtkAppendPolyData.h>
#include<vtkRenderWindowInteractor.h>
#include<vtkAutoInit.h>


#include <vtkVectorText.h>
#include <vtkTransform.h>
#include <vtkTransformFilter.h>
#include <vtkAppendPolyData.h>

int main(int argc, char *argv[])
{
	//点集合
	vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
	//定义cells
	vtkSmartPointer<vtkCellArray> verts = vtkSmartPointer<vtkCellArray>::New();
	//保存标签多边形的
	vtkSmartPointer<vtkAppendPolyData> appendPolyData = vtkSmartPointer<vtkAppendPolyData>::New();

	vtkSmartPointer<vtkMath> math = vtkSmartPointer<vtkMath>::New();
	for (int i = 0;i<500;i++) {
		double x = math->Random(1, 3);
		double y = math->Random(1, 3);
		double z = math->Random(1, 3);
		points->InsertNextPoint(x, y, z);
		verts->InsertNextCell(1);
		verts->InsertCellPoint(i);

		vtkSmartPointer<vtkVectorText> text = vtkSmartPointer<vtkVectorText>::New();
		text->SetText(std::to_string(i).c_str());
		//--进行缩放
		vtkSmartPointer<vtkTransform> t = vtkSmartPointer<vtkTransform>::New();
		t->Translate(x, y, z);
		t->Scale(.04, .04, .04); //NOTICE，缩放比例，注意，放在正常比例中会很小，甚至看不到

		vtkSmartPointer<vtkTransformFilter> tf = vtkSmartPointer<vtkTransformFilter>::New();
		tf->SetTransform(t);
		//tf->SetInputData(text->GetOutput());
		tf->SetInputConnection(text->GetOutputPort());

		appendPolyData->AddInputConnection(tf->GetOutputPort());
	}
	//原始数据 显示点集合
	vtkSmartPointer<vtkPolyData> polyData = vtkSmartPointer<vtkPolyData>::New();
	polyData->SetPoints(points);
	polyData->SetVerts(verts);

	vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
	mapper->SetInputData(polyData);

	vtkSmartPointer<vtkActor> vertsActor = vtkSmartPointer<vtkActor>::New();
	vertsActor->SetMapper(mapper);
	vertsActor->GetProperty()->SetPointSize(5);
	//显示字体
	vtkSmartPointer<vtkPolyDataMapper> textMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
	textMapper->SetInputConnection(appendPolyData->GetOutputPort());
	//textMapper->SetInputData(appendPolyData->GetOutput());
	vtkSmartPointer<vtkActor> textActor = vtkSmartPointer<vtkActor>::New();
	textActor->SetMapper(textMapper);


	vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
	renderer->AddActor(vertsActor);
	renderer->AddActor(textActor);
	renderer->SetBackground(.4, .5, .6);

	vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
	renderWindow->AddRenderer(renderer);
	renderWindow->SetSize(500, 500);

	vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New();

	renderWindowInteractor->SetRenderWindow(renderWindow);
	renderWindowInteractor->Initialize();
	renderWindowInteractor->Start();

}