VRUT::STLWriter Class Reference

Class for writing STL files. More...

#include <stlwriter.h>

List of all members.

Public Member Functions
	STLWriter (wxBufferedOutputStream *_outputStream, const Scene *_scene)
	~STLWriter ()
	Class destructor.
void	Write (bool saveBinary)
	Write STL stream.
Private Member Functions
void	writeASCII ()
	Write as ASCII.
void	writeBinary ()
	Write as binary data.
Private Attributes
wxOutputStream *	outputStream
	Input stream.
const Scene *	scene
	Scene container to be built.
std::vector< STLBinary >	facets

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Detailed Description

Class for writing STL files.

Definition at line 22 of file stlwriter.h.

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Constructor & Destructor Documentation

STLWriter::STLWriter	(	wxBufferedOutputStream *	_outputStream,
		const Scene *	_scene
	)

Class constructor

Parameters:

[in]	_outputStream	Stream to read data from
[in]	_scene	Scene to asve

Definition at line 18 of file stlwriter.cpp.

                                                                                 : outputStream(_outputStream), scene(_scene)
{
}

STLWriter::~STLWriter

(

)

Class destructor.

Is called by wxWidgets itself on wxApp end but it doesn't work in dynamic library

Definition at line 22 of file stlwriter.cpp.

{
}

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Member Function Documentation

void STLWriter::writeASCII

(

)

[private]

Write as ASCII.

Definition at line 27 of file stlwriter.cpp.

{
       TextWriter textWriter((wxBufferedOutputStream *)outputStream);
       //write header
       textWriter.Write("solid ")->Write(scene->GetName())->Write("\n");

       //write facets
       for (std::vector<STLBinary>::const_iterator facetIT = facets.begin(); facetIT != facets.end(); facetIT++)
       {
              textWriter.Write("   facet normal ")->Write(facetIT->norm, 3, " ")->Write("\n      outer loop\n         vertex ");
              textWriter.Write(facetIT->vert1, 3, " ")->Write("\n         vertex ")->Write(facetIT->vert2, 3, " ");
              textWriter.Write("\n         vertex ")->Write(facetIT->vert3, 3, " ")->Write("\n      endloop\n   endfacet\n");
       }
       
       //write tail
       textWriter.Write("endsolid ")->Write(scene->GetName())->Write("\n");
}

void STLWriter::writeBinary

(

)

[private]

Write as binary data.

Definition at line 45 of file stlwriter.cpp.

{
       //write header
       char header[80];
       strncpy(header, scene->GetName().mb_str(wxConvISO8859_1), 80);
       outputStream->Write(header, 80);
       unsigned long count = (unsigned long)facets.size();
       outputStream->Write(&count, 4);

       //write facets
       wxString facet;
       for (std::vector<STLBinary>::const_iterator facetIT = facets.begin(); facetIT != facets.end(); facetIT++)
       {
              outputStream->Write(&(*facetIT), 50);
       }
}

void STLWriter::Write

(

bool

saveBinary

)

Write STL stream.

Definition at line 62 of file stlwriter.cpp.

{
       //build facets list
       std::vector<NODE_ID> nodes;
       scene->GetNodeIDs(&nodes);

       for (std::vector<NODE_ID>::const_iterator nodeIt = nodes.begin();
              nodeIt != nodes.end(); nodeIt++)
       {
              const SceneNode * node = scene->GetNode(*nodeIt);
              if (!node || !node->IsOfType(SceneNode::GEOMETRY))
                     continue;
              scene->UpdateTransformation(*nodeIt);

              const Geometry * geom = scene->GetGeometry(((const GeometryNode *)node)->GetGeometryID());
              if (geom && geom->type == Geometry::GEOMETRY_TRIANGLE)
              {
                     std::vector<Triangle> triangles = geom->Triangulate();
                     MATRIX transf(*node->GetWorldTransMatrix());
                     for (size_t i=0; i<triangles.size(); i++)
                     {
                            STLBinary facet;
                            memcpy(facet.vert1, transf.TransformCoord(triangles.at(i).v1)._v, sizeof(float)*3);
                            memcpy(facet.vert2, transf.TransformCoord(triangles.at(i).v2)._v, sizeof(float)*3);
                            memcpy(facet.vert3, transf.TransformCoord(triangles.at(i).v3)._v, sizeof(float)*3);
                            memcpy(facet.norm, (VECTOR3(facet.vert2) - VECTOR3(facet.vert1)).Cross(VECTOR3(facet.vert3) - VECTOR3(facet.vert1)).Normalize()._v, sizeof(float)*3);
                            if (_isnan(facet.norm[0]) || _isnan(facet.norm[1]) || _isnan(facet.norm[2]))
                                   continue;//skip degenerated triangles
                            facet.attr[0]=0;
                            facet.attr[1]=0;
                            facets.push_back(facet);
                     }
              }
       }
       if (saveBinary)
              writeBinary();
       else
              writeASCII();
}

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Member Data Documentation

wxOutputStream* VRUT::STLWriter::outputStream [private]

Input stream.

Definition at line 26 of file stlwriter.h.

const Scene* VRUT::STLWriter::scene [private]

Scene container to be built.

Definition at line 28 of file stlwriter.h.

std::vector<STLBinary> VRUT::STLWriter::facets [private]

Definition at line 29 of file stlwriter.h.

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The documentation for this class was generated from the following files:

• /cygdrive/d/src/svn/vrut/trunk/core/src/base_modules/iostl/stlwriter.h
• /cygdrive/d/src/svn/vrut/trunk/core/src/base_modules/iostl/stlwriter.cpp