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120 lines
4.1 KiB
C
120 lines
4.1 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkPLYReader.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 vtkPLYReader
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* @brief read Stanford University PLY polygonal file format
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*
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* vtkPLYReader is a source object that reads polygonal data in
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* Stanford University PLY file format (see
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* http://graphics.stanford.edu/data/3Dscanrep). It requires that
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* the elements "vertex" and "face" are defined. The "vertex" element
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* must have the properties "x", "y", and "z". The "face" element must
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* have the property "vertex_indices" defined. Optionally, if the "face"
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* element has the properties "intensity" and/or the triplet "red",
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* "green", "blue", and optionally "alpha"; these are read and added as scalars
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* to the output data.
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* If the "face" element has the property "texcoord" a new TCoords
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* point array is created and points are duplicated if they have 2 or
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* more different texture coordinates. Points are duplicated only if
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* DuplicatePointsForFaceTexture is true (default).
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* This creates a polygonal data that can be textured without
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* artifacts. If unique points are required use a vtkCleanPolyData
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* filter after this reader or use this reader with DuplicatePointsForFaceTexture
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* set to false.
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*
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* @sa
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* vtkPLYWriter, vtkCleanPolyData
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*/
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#ifndef vtkPLYReader_h
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#define vtkPLYReader_h
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#include "vtkAbstractPolyDataReader.h"
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#include "vtkIOPLYModule.h" // For export macro
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class vtkStringArray;
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class VTKIOPLY_EXPORT vtkPLYReader : public vtkAbstractPolyDataReader
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{
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public:
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vtkTypeMacro(vtkPLYReader, 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 vtkPLYReader* New();
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/**
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* A simple, non-exhaustive check to see if a file is a valid ply file.
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*/
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static int CanReadFile(const char* filename);
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vtkGetObjectMacro(Comments, vtkStringArray);
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/**
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* Tolerance used to detect different texture coordinates for shared
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* points for faces.
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*/
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vtkGetMacro(FaceTextureTolerance, float);
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vtkSetMacro(FaceTextureTolerance, float);
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//@{
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/**
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* Enable reading from an InputString instead of the default, a file.
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* Note that reading from an input stream would be more flexible (enabling
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* other kind of streams) and possibly more efficient because we don't need
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* to save the whole stream to a string. However a stream interface
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* does not translate well to python and the string interface satisfies
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* our current needs. So we leave the stream interface for future work.
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*/
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vtkSetMacro(ReadFromInputString, bool);
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vtkGetMacro(ReadFromInputString, bool);
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vtkBooleanMacro(ReadFromInputString, bool);
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void SetInputString(const std::string& s) { this->InputString = s; }
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//@}
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/**
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* If true (default) and the "face" element has the property "texcoord" duplicate
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* face points if they have 2 or more different texture coordinates.
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* Otherwise, each texture coordinate for a face point overwrites previously set
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* texture coordinates for that point.
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*/
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vtkGetMacro(DuplicatePointsForFaceTexture, bool);
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vtkSetMacro(DuplicatePointsForFaceTexture, bool);
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protected:
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vtkPLYReader();
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~vtkPLYReader() override;
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vtkStringArray* Comments;
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// Whether this object is reading from a string or a file.
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// Default is 0: read from file.
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bool ReadFromInputString;
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// The input string.
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std::string InputString;
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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private:
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vtkPLYReader(const vtkPLYReader&) = delete;
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void operator=(const vtkPLYReader&) = delete;
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float FaceTextureTolerance;
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bool DuplicatePointsForFaceTexture;
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};
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#endif
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