vtk体绘制代码报错的解决办法(代码在vtk7,8,9中都能运行)，以及VTK数据集网站

链接：vtk7.1.1官方文档

链接：官方示例代码

链接：VTK资源网站（需要什么资源搜索就行，官网示例中的数据集、资源基本都有）

---

体绘制代码运行不了，一直报错的解决方案

• 大家应该都看过VTK图形图像进阶那本书了，那本书的VTK版本为5.10.1，随书代码中体绘制部分在VTK7 8 9版本中是不能运行的，需要稍微改一些东西（没有《VTK图形图像进阶》这本书和随书代码的可以找我私聊，我可以发百度网盘）
• 还需要注意添加：VTK_MODULE_INIT(vtkRenderingVolumeOpenGL2); 否则会报错

#include<vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2)
VTK_MODULE_INIT(vtkInteractionStyle);
VTK_MODULE_INIT(vtkRenderingFreeType);
VTK_MODULE_INIT(vtkRenderingVolumeOpenGL2); 
#include <vtkSmartPointer.h>
#include <vtkImageData.h>
#include <vtkStructuredPoints.h>
#include <vtkStructuredPointsReader.h>
#include <vtkVolumeRayCastCompositeFunction.h>
#include <vtkGPUVolumeRayCastMapper.h>
#include <vtkVolumeRayCastMapper.h>
#include <vtkColorTransferFunction.h>
#include <vtkPiecewiseFunction.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkVolumeProperty.h>
#include <vtkAxesActor.h>
#include <vtkImageShiftScale.h>
#include <vtkImageCast.h>
#include <vtkFixedPointVolumeRayCastMapper.h>

// ../data/mummy.128.vtk
int main(int argc, char *argv[])
{
    
	vtkSmartPointer<vtkStructuredPointsReader> reader =
		vtkSmartPointer<vtkStructuredPointsReader>::New();
	reader->SetFileName(../data/mummy.128.vtk);
	reader->Update();

	//vtkSmartPointer<vtkVolumeRayCastCompositeFunction> rayCastFun = vtkSmartPointer<vtkVolumeRayCastCompositeFunction>::New(); // 舍弃了

	vtkSmartPointer<vtkFixedPointVolumeRayCastMapper> volumeMapper = vtkSmartPointer<vtkFixedPointVolumeRayCastMapper>::New();
	volumeMapper->SetInputDataObject(reader->GetOutput());
	//volumeMapper->SetVolumeRayCastFunction(rayCastFun); // 舍弃了

	vtkSmartPointer<vtkVolumeProperty> volumeProperty =  vtkSmartPointer<vtkVolumeProperty>::New();
	volumeProperty->SetInterpolationTypeToLinear();
	volumeProperty->ShadeOn();  //打开或者关闭光照着色
	volumeProperty->SetAmbient(0.4);
	volumeProperty->SetDiffuse(0.6);
	volumeProperty->SetSpecular(0.2);

	vtkSmartPointer<vtkPiecewiseFunction> compositeOpacity = vtkSmartPointer<vtkPiecewiseFunction>::New();
	compositeOpacity->AddPoint(70,   0.00);
	compositeOpacity->AddPoint(90,   0.40);
	compositeOpacity->AddPoint(180,  0.60);
	volumeProperty->SetScalarOpacity(compositeOpacity); //设置不透明度传输函数

	vtkSmartPointer<vtkPiecewiseFunction> volumeGradientOpacity = vtkSmartPointer<vtkPiecewiseFunction>::New();
	volumeGradientOpacity->AddPoint(10,  0.0);
	volumeGradientOpacity->AddPoint(90,  0.5);
	volumeGradientOpacity->AddPoint(100, 1.0);
	//volumeProperty->SetGradientOpacity(volumeGradientOpacity);//设置梯度不透明度效果对比

	vtkSmartPointer<vtkColorTransferFunction> color = vtkSmartPointer<vtkColorTransferFunction>::New();
	color->AddRGBPoint(0.000,  0.00, 0.00, 0.00);
	color->AddRGBPoint(64.00,  1.00, 0.52, 0.30);
	color->AddRGBPoint(190.0,  1.00, 1.00, 1.00);
	color->AddRGBPoint(220.0,  0.20, 0.20, 0.20);
	volumeProperty->SetColor(color);

	vtkSmartPointer<vtkVolume> volume = vtkSmartPointer<vtkVolume>::New();
	volume->SetMapper(volumeMapper);
	volume->SetProperty(volumeProperty);

	vtkSmartPointer<vtkRenderer> ren = vtkSmartPointer<vtkRenderer>::New();
	ren->SetBackground(1, 1, 0);
	ren->AddVolume( volume ); 

	vtkSmartPointer<vtkRenderWindow> renWin = vtkSmartPointer<vtkRenderWindow>::New();
	renWin->AddRenderer(ren);
	renWin->SetSize(640, 480);
	renWin->Render();
	renWin->SetWindowName("VolumeRenderingApp");

	vtkSmartPointer<vtkRenderWindowInteractor> iren = vtkSmartPointer<vtkRenderWindowInteractor>::New();
	iren->SetRenderWindow(renWin);
	ren->ResetCamera();

	renWin->Render();
	iren->Start();

	std::cin.get();

	return EXIT_SUCCESS;
}