You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
3 weeks ago
|
/*=========================================================================
|
||
|
|
|
||
|
|
Program: Visualization Toolkit
|
||
|
|
Module: vtkGLTFExporter.h
|
||
|
|
|
||
|
|
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
|
||
|
|
All rights reserved.
|
||
|
|
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
|
||
|
|
|
||
|
|
This software is distributed WITHOUT ANY WARRANTY; without even
|
||
|
|
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||
|
|
PURPOSE. See the above copyright notice for more information.
|
||
|
|
|
||
|
|
=========================================================================*/
|
||
|
|
/**
|
||
|
|
* @class vtkGLTFExporter
|
||
|
|
* @brief export a scene into GLTF 2.0 format.
|
||
|
|
*
|
||
|
|
* vtkGLTFExporter is a concrete subclass of vtkExporter that writes GLTF 2.0
|
||
|
|
* files. It currently only supports a very small subset of what VTK can do
|
||
|
|
* including polygonal meshes with optional vertex colors. Over time the class
|
||
|
|
* can be expanded to support more and more of what VTK renders.
|
||
|
|
*
|
||
|
|
* It should be noted that gltf is a format for rendering data. As such
|
||
|
|
* it stores what the VTK scene renders as, not the underlying data. For
|
||
|
|
* example it currently does not support quads or higher sided polygons
|
||
|
|
* although VTK does. As such taking an exported gltf file and then selecting
|
||
|
|
* wireframe in a viewer will give all triangles where VTK's rendering
|
||
|
|
* would correctly draw the original polygons. etc.
|
||
|
|
*
|
||
|
|
* @sa
|
||
|
|
* vtkExporter
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef vtkGLTFExporter_h
|
||
|
|
#define vtkGLTFExporter_h
|
||
|
|
|
||
|
|
#include "vtkExporter.h"
|
||
|
|
#include "vtkIOExportModule.h" // For export macro
|
||
|
|
|
||
|
|
#include <string> // for std::string
|
||
|
|
|
||
|
|
class VTKIOEXPORT_EXPORT vtkGLTFExporter : public vtkExporter
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
static vtkGLTFExporter* New();
|
||
|
|
vtkTypeMacro(vtkGLTFExporter, vtkExporter);
|
||
|
|
void PrintSelf(ostream& os, vtkIndent indent) override;
|
||
|
|
|
||
|
|
//@{
|
||
|
|
/**
|
||
|
|
* Specify the name of the GLTF file to write.
|
||
|
|
*/
|
||
|
|
vtkSetStringMacro(FileName);
|
||
|
|
vtkGetStringMacro(FileName);
|
||
|
|
//@}
|
||
|
|
|
||
|
|
//@{
|
||
|
|
/**
|
||
|
|
* Should the binary data be included in the json file as a base64
|
||
|
|
* string.
|
||
|
|
*/
|
||
|
|
vtkGetMacro(InlineData, bool);
|
||
|
|
vtkSetMacro(InlineData, bool);
|
||
|
|
vtkBooleanMacro(InlineData, bool);
|
||
|
|
//@}
|
||
|
|
|
||
|
|
//@{
|
||
|
|
/**
|
||
|
|
* It looks for a point array called
|
||
|
|
* NORMAL in the data and it saves it in the
|
||
|
|
* GLTF file if found.
|
||
|
|
* NORMAL is the vertex normal. Cesium needs this to render buildings correctly
|
||
|
|
* if there is no texture.
|
||
|
|
*/
|
||
|
|
vtkGetMacro(SaveNormal, bool);
|
||
|
|
vtkSetMacro(SaveNormal, bool);
|
||
|
|
vtkBooleanMacro(SaveNormal, bool);
|
||
|
|
//@}
|
||
|
|
|
||
|
|
//@{
|
||
|
|
/**
|
||
|
|
* It looks for point arrays called
|
||
|
|
* _BATCHID in the data and it saves it in the
|
||
|
|
* GLTF file if found.
|
||
|
|
* _BATCHID is an index used in 3D Tiles b3dm format. This format stores
|
||
|
|
* a binary gltf with a mesh that has several objects (buildings).
|
||
|
|
* Objects are indexed from 0 to number of objects - 1, all points
|
||
|
|
* of an objects have the same index. These index values are stored
|
||
|
|
* in _BATCHID
|
||
|
|
*/
|
||
|
|
vtkGetMacro(SaveBatchId, bool);
|
||
|
|
vtkSetMacro(SaveBatchId, bool);
|
||
|
|
vtkBooleanMacro(SaveBatchId, bool);
|
||
|
|
//@}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Write the result to a string instead of a file
|
||
|
|
*/
|
||
|
|
std::string WriteToString();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Write the result to a provided ostream
|
||
|
|
*/
|
||
|
|
void WriteToStream(ostream& out);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
vtkGLTFExporter();
|
||
|
|
~vtkGLTFExporter() override;
|
||
|
|
|
||
|
|
void WriteData() override;
|
||
|
|
|
||
|
|
|
||
|
|
char* FileName;
|
||
|
|
bool InlineData;
|
||
|
|
bool SaveNormal;
|
||
|
|
bool SaveBatchId;
|
||
|
|
|
||
|
|
private:
|
||
|
|
vtkGLTFExporter(const vtkGLTFExporter&) = delete;
|
||
|
|
void operator=(const vtkGLTFExporter&) = delete;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|