[vtkusers] Visualizing normal vectors

[mozendi]

Dear Andaharoo,
Thank you for your recommendation. I tried to modify my codes according to
your recommendations, my code is getting compiled successfully. However,
when I run it I am getting an error message. The screenshot and my code are
below. Could you please tell me what is wrong with my code?
Thanks in advance
<http://vtk.1045678.n5.nabble.com/file/t341822/vtk_error_message.png> 


#include <vtkVersion.h>
#include <vtkSmartPointer.h>
#include <vtkProperty.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkDelimitedTextReader.h>
#include <vtkDoubleArray.h>
#include <vtkTable.h>
#include <vtkPointData.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkVertexGlyphFilter.h>
#include <vtkArrowSource.h>
#include <vtkGlyph3D.h>
#include <vtkPointSource.h>
# include "vtkGlyph3DMapper.h"
# include "vtkGlyph3DMapper.h"
#include <vtkOpenGLGlyph3DMapper.h>
#include <vector>


int main(int argc, char* argv[])
{
	vtkSmartPointer<vtkDelimitedTextReader> reader =
vtkSmartPointer<vtkDelimitedTextReader>::New();
	reader->SetFileName("points_and_normals.xyz");
	reader->DetectNumericColumnsOn();
	reader->SetFieldDelimiterCharacters(" ");
	reader->Update();

	vtkTable* table = reader->GetOutput();
	vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
	vtkSmartPointer<vtkDoubleArray> normals =
vtkSmartPointer<vtkDoubleArray>::New();
	normals->SetNumberOfComponents(3); //3d normals (ie x,y,z)

	std::cout << "Table has " << table->GetNumberOfRows()
		<< " rows." << std::endl;
	std::cout << "Table has " << table->GetNumberOfColumns()
		<< " columns." << std::endl;

	for (vtkIdType i = 0; i < table->GetNumberOfRows(); i++)
	{

		points->InsertNextPoint((table->GetValue(i, 0)).ToDouble(),
			(table->GetValue(i, 1)).ToDouble(),
			(table->GetValue(i, 2)).ToDouble());

		double n[3];
		n[0] = (table->GetValue(i, 3)).ToDouble();
		n[1] = (table->GetValue(i, 4)).ToDouble();
		n[2] = (table->GetValue(i, 5)).ToDouble();
		normals->InsertNextTuple(n);
	}

	std::cout << "There are " << points->GetNumberOfPoints()
		<< " points." << std::endl;
		

	vtkSmartPointer<vtkPolyData> polydata =
vtkSmartPointer<vtkPolyData>::New();
	polydata->SetPoints(points);
	//polydata->GetPointData()->SetNormals(normals);
	polydata->GetPointData()->AddArray(normals);
	
	vtkSmartPointer<vtkOpenGLGlyph3DMapper> Glyph3D =
vtkSmartPointer<vtkOpenGLGlyph3DMapper>::New();
	Glyph3D->SetInputData(polydata);
	Glyph3D->SetOrientationArray("normals");
	Glyph3D->SetScaleFactor(.5);
	Glyph3D->Update();
		
	vtkSmartPointer<vtkActor> glyph3DActor =	vtkSmartPointer<vtkActor>::New();
	glyph3DActor->SetMapper(Glyph3D);
	glyph3DActor->GetProperty()->SetColor(0.8900, 0.8100, 0.3400);

	vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
	vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
	renderWindow->AddRenderer(renderer);
	vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
	renderWindowInteractor->SetRenderWindow(renderWindow);
	renderer->AddActor(glyph3DActor);
	renderer->SetBackground(.5, .5, .5);
	renderWindow->Render();
	renderWindowInteractor->Start();
	return EXIT_SUCCESS;
}





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