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141 lines
4.1 KiB
C++
141 lines
4.1 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkSTLReader.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkSTLReader
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* @brief read ASCII or binary stereo lithography files
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*
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* vtkSTLReader is a source object that reads ASCII or binary stereo
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* lithography files (.stl files). The FileName must be specified to
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* vtkSTLReader. The object automatically detects whether the file is
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* ASCII or binary.
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*
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* .stl files are quite inefficient since they duplicate vertex
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* definitions. By setting the Merging boolean you can control whether the
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* point data is merged after reading. Merging is performed by default,
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* however, merging requires a large amount of temporary storage since a
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* 3D hash table must be constructed.
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*
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* @warning
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* Binary files written on one system may not be readable on other systems.
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* vtkSTLWriter uses VAX or PC byte ordering and swaps bytes on other systems.
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*/
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#ifndef vtkSTLReader_h
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#define vtkSTLReader_h
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#include "vtkAbstractPolyDataReader.h"
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#include "vtkIOGeometryModule.h" // For export macro
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class vtkCellArray;
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class vtkFloatArray;
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class vtkIncrementalPointLocator;
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class vtkPoints;
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class VTKIOGEOMETRY_EXPORT vtkSTLReader : public vtkAbstractPolyDataReader
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{
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public:
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vtkTypeMacro(vtkSTLReader, vtkAbstractPolyDataReader);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Construct object with merging set to true.
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*/
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static vtkSTLReader* New();
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/**
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* Overload standard modified time function. If locator is modified,
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* then this object is modified as well.
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*/
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vtkMTimeType GetMTime() override;
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//@{
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/**
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* Turn on/off merging of points/triangles.
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*/
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vtkSetMacro(Merging, vtkTypeBool);
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vtkGetMacro(Merging, vtkTypeBool);
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vtkBooleanMacro(Merging, vtkTypeBool);
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//@}
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//@{
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/**
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* Turn on/off tagging of solids with scalars.
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*/
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vtkSetMacro(ScalarTags, vtkTypeBool);
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vtkGetMacro(ScalarTags, vtkTypeBool);
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vtkBooleanMacro(ScalarTags, vtkTypeBool);
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//@}
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//@{
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/**
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* Specify a spatial locator for merging points. By
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* default an instance of vtkMergePoints is used.
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*/
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void SetLocator(vtkIncrementalPointLocator* locator);
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vtkGetObjectMacro(Locator, vtkIncrementalPointLocator);
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//@}
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/**
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* Get header string.
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* If an ASCII STL file contains multiple solids then
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* headers are separated by newline character.
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* If a binary STL file is read, the first zero-terminated
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* string is stored in this header, the full header is available
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* by using GetBinaryHeader().
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* \sa GetBinaryHeader()
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*/
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vtkGetStringMacro(Header);
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/**
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* Get binary file header string.
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* If ASCII STL file is read then BinaryHeader is not set,
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* and the header can be retrieved using.GetHeader() instead.
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* \sa GetHeader()
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*/
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vtkGetObjectMacro(BinaryHeader, vtkUnsignedCharArray);
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protected:
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vtkSTLReader();
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~vtkSTLReader() override;
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/**
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* Create default locator. Used to create one when none is specified.
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*/
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vtkIncrementalPointLocator* NewDefaultLocator();
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/**
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* Set header string. Internal use only.
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*/
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vtkSetStringMacro(Header);
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virtual void SetBinaryHeader(vtkUnsignedCharArray* binaryHeader);
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vtkTypeBool Merging;
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vtkTypeBool ScalarTags;
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vtkIncrementalPointLocator* Locator;
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char* Header;
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vtkUnsignedCharArray* BinaryHeader;
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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bool ReadBinarySTL(FILE* fp, vtkPoints*, vtkCellArray*);
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bool ReadASCIISTL(FILE* fp, vtkPoints*, vtkCellArray*, vtkFloatArray* scalars = nullptr);
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int GetSTLFileType(const char* filename);
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private:
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vtkSTLReader(const vtkSTLReader&) = delete;
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void operator=(const vtkSTLReader&) = delete;
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};
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#endif
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