1048 lines
38 KiB
C++
1048 lines
38 KiB
C++
// -*-c++-*-
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/*
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* 3DS reader/writer for Open Scene Graph
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*
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* Copyright (C) ???
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*
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* Writing support added 2007 by Sukender (Benoit Neil), http://sukender.free.fr,
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* strongly inspired by the OBJ writer object by Stephan Huber
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*
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* The Open Scene Graph (OSG) is a cross platform C++/OpenGL library for
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* real-time rendering of large 3D photo-realistic models.
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* The OSG homepage is http://www.openscenegraph.org/
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*/
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#include <osg/io_utils>
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#include <osg/CullFace>
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#include <osg/Billboard>
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#include <osgDB/WriteFile>
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#include "WriterNodeVisitor.h"
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#include <assert.h>
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#include <string.h>
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void copyOsgMatrixToLib3dsMatrix(Lib3dsMatrix lib3ds_matrix, const osg::Matrix& osg_matrix)
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{
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for(int row=0; row<4; ++row)
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{
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lib3ds_matrix[row][0] = osg_matrix.ptr()[row*4+0];
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lib3ds_matrix[row][1] = osg_matrix.ptr()[row*4+1];
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lib3ds_matrix[row][2] = osg_matrix.ptr()[row*4+2];
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lib3ds_matrix[row][3] = osg_matrix.ptr()[row*4+3];
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}
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}
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inline void copyOsgVectorToLib3dsVector(Lib3dsVector lib3ds_vector, const osg::Vec3f& osg_vector)
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{
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lib3ds_vector[0] = osg_vector[0];
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lib3ds_vector[1] = osg_vector[1];
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lib3ds_vector[2] = osg_vector[2];
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}
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inline void copyOsgVectorToLib3dsVector(Lib3dsVector lib3ds_vector, const osg::Vec3d& osg_vector)
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{
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lib3ds_vector[0] = osg_vector[0];
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lib3ds_vector[1] = osg_vector[1];
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lib3ds_vector[2] = osg_vector[2];
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}
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inline void copyOsgColorToLib3dsColor(Lib3dsVector lib3ds_vector, const osg::Vec4f& osg_vector)
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{
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lib3ds_vector[0] = osg_vector[0];
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lib3ds_vector[1] = osg_vector[1];
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lib3ds_vector[2] = osg_vector[2];
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}
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inline void copyOsgColorToLib3dsColor(Lib3dsVector lib3ds_vector, const osg::Vec4d& osg_vector)
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{
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lib3ds_vector[0] = osg_vector[0];
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lib3ds_vector[1] = osg_vector[1];
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lib3ds_vector[2] = osg_vector[2];
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}
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inline void copyOsgQuatToLib3dsQuat(float lib3ds_vector[4], const osg::Quat& osg_quat)
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{
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//lib3ds_vector[0] = osg_quat[3]; // Not sure
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//lib3ds_vector[1] = osg_quat[0];
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//lib3ds_vector[2] = osg_quat[1];
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//lib3ds_vector[3] = osg_quat[2];
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// 3DS seems to store (angle in radians, axis_x, axis_y, axis_z), but it works with (axis_x, axis_y, axis_z, -angle in radians)!
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osg::Quat::value_type angle, x, y, z;
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osg_quat.getRotate(angle, x, y, z);
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lib3ds_vector[0] = static_cast<float>(x);
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lib3ds_vector[1] = static_cast<float>(y);
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lib3ds_vector[2] = static_cast<float>(z);
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lib3ds_vector[3] = static_cast<float>(-angle);
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}
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std::string getFileName(const std::string & path)
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{
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unsigned int slashPos = path.find_last_of("/\\");
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if (slashPos == std::string::npos) return path;
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return path.substr(slashPos+1);
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}
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/// Checks if a filename (\b not path) is 8.3 (an empty name is never 8.3, and a path is never 8.3).
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bool is83(const std::string & s)
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{
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// 012345678901
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// ABCDEFGH.ABC
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if (s.find_first_of("/\\") != std::string::npos) return false; // It should not be a path, but a filename
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unsigned int len = s.length();
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if (len > 12 || len == 0) return false;
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unsigned int pointPos = s.rfind('.');
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if (pointPos == std::string::npos) return len <= 8; // Without point
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// With point
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if (pointPos > 8) return false;
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if (len-1 - pointPos > 3) return false;
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return true;
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}
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/// Tests if the given string is a path supported by 3DS format (8.3, 63 chars max).
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bool is3DSpath(const std::string & s, bool extendedFilePaths)
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{
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unsigned int len = s.length();
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if (len >= 64 || len == 0) return false;
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if (extendedFilePaths) return true; // Extended paths are simply those that fits the 64 bytes buffer!
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// For each subdirectory
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unsigned int tokenLen;
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for (unsigned int tokenBegin=0, tokenEnd=0; tokenEnd == std::string::npos; tokenBegin = tokenEnd+1)
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{
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tokenEnd = s.find_first_of("/\\", tokenBegin);
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if (tokenEnd != std::string::npos) tokenLen = tokenEnd-tokenBegin-1; // -1 to avoid reading the separator
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else tokenLen = len-tokenBegin;
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if ( tokenLen>0 && !is83(s.substr(tokenBegin, tokenLen)) ) return false;
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}
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return true;
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}
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/** writes all primitives of a primitive-set out to a stream, decomposes quads to triangles, line-strips to lines etc */
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class PrimitiveIndexWriter : public osg::PrimitiveIndexFunctor
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{
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public:
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PrimitiveIndexWriter(osg::Geometry * geo,
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ListTriangle & listTriangles,
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unsigned int drawable_n,
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unsigned int material) :
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osg::PrimitiveIndexFunctor(),
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_drawable_n(drawable_n),
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_listTriangles(listTriangles),
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_hasNormalCoords(geo->getNormalArray() != NULL),
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_hasTexCoords(geo->getTexCoordArray(0) != NULL),
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_geo(geo),
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_lastFaceIndex(0),
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_material(material)
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{
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}
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unsigned int getNextFaceIndex() { return _lastFaceIndex; }
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virtual void setVertexArray(unsigned int,const osg::Vec2*) {}
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virtual void setVertexArray(unsigned int count,const osg::Vec3* vecs) {}
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virtual void setVertexArray(unsigned int,const osg::Vec4* ) {}
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virtual void setVertexArray(unsigned int,const osg::Vec2d*) {}
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virtual void setVertexArray(unsigned int ,const osg::Vec3d* ) {}
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virtual void setVertexArray(unsigned int,const osg::Vec4d* ) {}
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// operator for triangles
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void writeTriangle(unsigned int i1, unsigned int i2, unsigned int i3)
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{
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Triangle triangle;
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triangle.t1 = i1;
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triangle.t2 = i2;
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triangle.t3 = i3;
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triangle.material = _material;
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_listTriangles.push_back(ListTriangle::value_type(triangle, _drawable_n));
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}
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virtual void begin(GLenum mode)
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{
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_modeCache = mode;
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_indexCache.clear();
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}
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virtual void vertex(unsigned int vert)
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{
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_indexCache.push_back(vert);
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}
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virtual void end()
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{
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if (!_indexCache.empty())
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{
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drawElements(_modeCache,_indexCache.size(),&_indexCache.front());
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}
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}
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virtual void drawArrays(GLenum mode,GLint first,GLsizei count);
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virtual void drawElements(GLenum mode,GLsizei count,const GLubyte* indices)
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{
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drawElementsImplementation<GLubyte>(mode, count, indices);
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}
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virtual void drawElements(GLenum mode,GLsizei count,const GLushort* indices)
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{
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drawElementsImplementation<GLushort>(mode, count, indices);
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}
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virtual void drawElements(GLenum mode,GLsizei count,const GLuint* indices)
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{
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drawElementsImplementation<GLuint>(mode, count, indices);
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}
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protected:
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template<typename T>void drawElementsImplementation(GLenum mode, GLsizei count, const T* indices)
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{
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if (indices==0 || count==0) return;
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typedef const T* IndexPointer;
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switch(mode)
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{
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case(GL_TRIANGLES):
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{
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//lib3ds_mesh_resize_faces(_mesh, _lastFaceIndex + count / 3);
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IndexPointer ilast = &indices[count];
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for(IndexPointer iptr=indices;iptr<ilast;iptr+=3)
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writeTriangle(*iptr,*(iptr+1),*(iptr+2));
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break;
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}
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case(GL_TRIANGLE_STRIP):
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{
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//lib3ds_mesh_resize_faces(_mesh, _lastFaceIndex + count -2);
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IndexPointer iptr = indices;
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for(GLsizei i=2;i<count;++i,++iptr)
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{
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if ((i%2)) writeTriangle(*(iptr),*(iptr+2),*(iptr+1));
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else writeTriangle(*(iptr),*(iptr+1),*(iptr+2));
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}
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break;
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}
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case(GL_QUADS):
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{
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//lib3ds_mesh_resize_faces(_mesh, _lastFaceIndex + count /2); // count/4*2
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IndexPointer iptr = indices;
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for(GLsizei i=3;i<count;i+=4,iptr+=4)
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{
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writeTriangle(*(iptr),*(iptr+1),*(iptr+2));
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writeTriangle(*(iptr),*(iptr+2),*(iptr+3));
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}
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break;
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}
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case(GL_QUAD_STRIP):
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{
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//lib3ds_mesh_resize_faces(_mesh, _lastFaceIndex + (count / 2 -1)*2);
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IndexPointer iptr = indices;
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for(GLsizei i=3;i<count;i+=2,iptr+=2)
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{
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writeTriangle(*(iptr),*(iptr+1),*(iptr+2));
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writeTriangle(*(iptr+1),*(iptr+3),*(iptr+2));
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}
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break;
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}
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case(GL_POLYGON): // treat polygons as GL_TRIANGLE_FAN
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case(GL_TRIANGLE_FAN):
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{
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//lib3ds_mesh_resize_faces(_mesh, _lastFaceIndex + count -2);
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IndexPointer iptr = indices;
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unsigned int first = *iptr;
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++iptr;
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for(GLsizei i=2;i<count;++i,++iptr)
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{
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writeTriangle(first,*(iptr),*(iptr+1));
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}
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break;
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}
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case(GL_POINTS):
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case(GL_LINES):
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case(GL_LINE_STRIP):
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case(GL_LINE_LOOP):
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// Not handled
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break;
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default:
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// uhm should never come to this point :)
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break;
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}
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}
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private:
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PrimitiveIndexWriter& operator = (const PrimitiveIndexWriter&) { return *this; }
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unsigned int _drawable_n;
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ListTriangle & _listTriangles;
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GLenum _modeCache;
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std::vector<GLuint> _indexCache;
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bool _hasNormalCoords, _hasTexCoords;
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osg::Geometry* _geo;
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unsigned int _lastFaceIndex;
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unsigned int _material;
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};
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void PrimitiveIndexWriter::drawArrays(GLenum mode,GLint first,GLsizei count)
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{
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switch(mode)
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{
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case(GL_TRIANGLES):
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{
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unsigned int pos=first;
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for(GLsizei i=2;i<count;i+=3,pos+=3)
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{
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writeTriangle(pos,pos+1,pos+2);
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}
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break;
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}
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case(GL_TRIANGLE_STRIP):
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{
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unsigned int pos=first;
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for(GLsizei i=2;i<count;++i,++pos)
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{
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if ((i%2)) writeTriangle(pos,pos+2,pos+1);
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else writeTriangle(pos,pos+1,pos+2);
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}
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break;
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}
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case(GL_QUADS):
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{
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unsigned int pos=first;
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for(GLsizei i=3;i<count;i+=4,pos+=4)
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{
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writeTriangle(pos,pos+1,pos+2);
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writeTriangle(pos,pos+2,pos+3);
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}
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break;
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}
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case(GL_QUAD_STRIP):
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{
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unsigned int pos=first;
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for(GLsizei i=3;i<count;i+=2,pos+=2)
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{
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writeTriangle(pos,pos+1,pos+2);
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writeTriangle(pos+1,pos+3,pos+2);
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}
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break;
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}
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case(GL_POLYGON): // treat polygons as GL_TRIANGLE_FAN
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case(GL_TRIANGLE_FAN):
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{
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unsigned int pos=first+1;
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for(GLsizei i=2;i<count;++i,++pos)
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{
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writeTriangle(first,pos,pos+1);
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}
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break;
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}
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case(GL_POINTS):
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case(GL_LINES):
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case(GL_LINE_STRIP):
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case(GL_LINE_LOOP):
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//break;
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default:
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OSG_NOTIFY(osg::WARN) << "3DS WriterNodeVisitor: can't handle mode " << mode << std::endl;
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break;
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}
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}
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WriterNodeVisitor::Material::Material(WriterNodeVisitor & writerNodeVisitor, osg::StateSet * stateset, osg::Material* mat, osg::Texture* tex, int index) :
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index(index),
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diffuse(1,1,1,1),
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ambient(0.2,0.2,0.2,1),
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specular(0,0,0,1),
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shininess(0),
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transparency(0),
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double_sided(false),
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image(NULL),
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texture_transparency(false),
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texture_no_tile(false)
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{
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//static unsigned int s_objmaterial_id = 0;
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//++s_objmaterial_id;
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if (mat)
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{
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assert(stateset);
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diffuse = mat->getDiffuse(osg::Material::FRONT);
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ambient = mat->getAmbient(osg::Material::FRONT);
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specular = mat->getSpecular(osg::Material::FRONT);
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shininess = mat->getShininess(osg::Material::FRONT);
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transparency = 1-diffuse.w();
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name = writerNodeVisitor.getUniqueName(mat->getName(),"mat");
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osg::StateAttribute * attribute = stateset->getAttribute(osg::StateAttribute::CULLFACE);
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if (!attribute)
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{
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double_sided = true;
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}
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else
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{
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assert(dynamic_cast<osg::CullFace *>(attribute));
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osg::CullFace::Mode mode = static_cast<osg::CullFace *>(attribute)->getMode();
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if (mode == osg::CullFace::BACK) double_sided = false;
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else if (mode == osg::CullFace::FRONT)
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{
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OSG_NOTIFY(osg::WARN) << "3DS Writer: Reversed face (culled FRONT) not supported yet." << std::endl;
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double_sided = false;
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}
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else
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{
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assert(mode == osg::CullFace::FRONT_AND_BACK);
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OSG_NOTIFY(osg::WARN) << "3DS Writer: Invisible face (culled FRONT_AND_BACK) not supported yet." << std::endl;
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double_sided = false;
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}
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}
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}
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if (tex)
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{
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osg::Image* img = tex->getImage(0);
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if(img)
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{
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texture_transparency = (stateset->getMode(GL_BLEND) == osg::StateAttribute::ON);
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texture_no_tile = (tex->getWrap(osg::Texture2D::WRAP_S) == osg::Texture2D::CLAMP);
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image = img;
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}
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}
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if (name.empty())
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{
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std::stringstream ss;
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ss << "m" << index;
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name = ss.str();
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}
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}
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// If 'to' is in a subdirectory of 'from' then this function returns the
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// subpath. Otherwise it just returns the file name.
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// (Same as in FBX plugin)
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std::string getPathRelative(const std::string& from/*directory*/,
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const std::string& to/*file path*/)
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{
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std::string::size_type slash = to.find_last_of('/');
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std::string::size_type backslash = to.find_last_of('\\');
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if (slash == std::string::npos)
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{
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if (backslash == std::string::npos) return to;
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slash = backslash;
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}
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else if (backslash != std::string::npos && backslash > slash)
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{
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slash = backslash;
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}
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if (from.empty() || from.length() > to.length())
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return osgDB::getSimpleFileName(to);
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std::string::const_iterator itTo = to.begin();
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for (std::string::const_iterator itFrom = from.begin();
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itFrom != from.end(); ++itFrom, ++itTo)
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{
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char a = tolower(*itFrom), b = tolower(*itTo);
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if (a == '\\') a = '/';
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if (b == '\\') b = '/';
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if (a != b || itTo == to.begin() + slash + 1)
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{
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return osgDB::getSimpleFileName(to);
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}
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}
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while (itTo != to.end() && (*itTo == '\\' || *itTo == '/'))
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{
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++itTo;
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}
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return std::string(itTo, to.end());
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}
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/// Converts an extension to a 3-letters long one equivalent.
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std::string convertExt(const std::string & path, bool extendedFilePaths)
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{
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if (extendedFilePaths) return path; // Extensions are not truncated for extended filenames
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std::string ext = osgDB::getFileExtensionIncludingDot(path);
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if (ext == ".tiff") ext = ".tif";
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else if (ext == ".jpeg") ext = ".jpg";
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else if (ext == ".jpeg2000" || ext == ".jpg2000") ext = ".jpc";
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return osgDB::getNameLessExtension(path) + ext;
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}
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WriterNodeVisitor::WriterNodeVisitor(Lib3dsFile * file3ds, const std::string & fileName,
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const osgDB::ReaderWriter::Options* options,
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const std::string & srcDirectory) :
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osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
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_succeeded(true),
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_srcDirectory(srcDirectory),
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file3ds(file3ds),
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_currentStateSet(new osg::StateSet()),
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_lastMaterialIndex(0),
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_lastMeshIndex(0),
|
|
_cur3dsNode(NULL),
|
|
options(options),
|
|
_imageCount(0),
|
|
_extendedFilePaths(false)
|
|
{
|
|
if (!fileName.empty())
|
|
_directory = options->getDatabasePathList().empty() ? osgDB::getFilePath(fileName) : options->getDatabasePathList().front();
|
|
|
|
if (options)
|
|
{
|
|
std::istringstream iss(options->getOptionString());
|
|
std::string opt;
|
|
while (iss >> opt)
|
|
{
|
|
if (opt == "extended3dsFilePaths" || opt == "extended3DSFilePaths")
|
|
_extendedFilePaths = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void WriterNodeVisitor::writeMaterials()
|
|
{
|
|
unsigned int nbMat = _materialMap.size();
|
|
lib3ds_file_reserve_materials(file3ds, nbMat, 1);
|
|
// Ugly thing: it seems lib3ds_file_insert_material() doesn't support insertion in a random order (else materials are not assigned the right way)
|
|
for (unsigned int iMat=0; iMat<nbMat; ++iMat)
|
|
{
|
|
bool found = false;
|
|
for(MaterialMap::iterator itr = _materialMap.begin(); itr != _materialMap.end(); ++itr)
|
|
{
|
|
const Material & mat = itr->second;
|
|
if (mat.index != static_cast<int>(iMat)) continue; // Ugly thing (2)
|
|
found = true;
|
|
|
|
assert(mat.index>=0 && mat.index < static_cast<int>(_materialMap.size()));
|
|
Lib3dsMaterial * mat3ds = lib3ds_material_new(getFileName(mat.name).c_str());
|
|
copyOsgColorToLib3dsColor(mat3ds->ambient, mat.ambient);
|
|
copyOsgColorToLib3dsColor(mat3ds->diffuse, mat.diffuse);
|
|
copyOsgColorToLib3dsColor(mat3ds->specular, mat.specular);
|
|
mat3ds->shininess = mat.shininess;
|
|
mat3ds->transparency = mat.transparency;
|
|
mat3ds->two_sided = mat.double_sided ? 1 : 0;
|
|
if (mat.image)
|
|
{
|
|
Lib3dsTextureMap & tex = mat3ds->texture1_map;
|
|
std::string path;
|
|
if(mat.image->getFileName().empty())
|
|
{
|
|
std::ostringstream oss;
|
|
oss << "Image_" << _imageCount++ << ".rgb";
|
|
path = oss.str();
|
|
}
|
|
else
|
|
{
|
|
path = getPathRelative(_srcDirectory, mat.image->getFileName());
|
|
}
|
|
path = convertExt(path, _extendedFilePaths);
|
|
|
|
if(!is3DSpath(path, _extendedFilePaths))
|
|
{
|
|
path = getUniqueName(path, "", true);
|
|
//path = osgDB::getSimpleFileName(path);
|
|
}
|
|
|
|
strcpy(tex.name, path.c_str());
|
|
path = osgDB::concatPaths(_directory, path);
|
|
osgDB::makeDirectoryForFile(path);
|
|
|
|
//if (mat.image->valid()) osgDB::writeImageFile(*(mat.image), path);
|
|
if(_imageSet.find(mat.image.get()) == _imageSet.end())
|
|
{
|
|
_imageSet.insert(mat.image.get());
|
|
osgDB::writeImageFile(*(mat.image), path);
|
|
}
|
|
if (mat.texture_transparency) tex.flags |= LIB3DS_TEXTURE_ALPHA_SOURCE;
|
|
if (mat.texture_no_tile) tex.flags |= LIB3DS_TEXTURE_NO_TILE;
|
|
}
|
|
if (!succeeded())
|
|
return;
|
|
lib3ds_file_insert_material(file3ds, mat3ds, itr->second.index);
|
|
break; // Ugly thing (3)
|
|
}
|
|
assert(found); // Ugly thing (4) - Implementation error if !found
|
|
}
|
|
}
|
|
|
|
|
|
std::string WriterNodeVisitor::getUniqueName(const std::string& _defaultValue, const std::string & _defaultPrefix, bool nameIsPath)
|
|
{
|
|
static const unsigned int MAX_PREFIX_LEGNTH = 4; // Arbitrarily defined to 4 chars
|
|
assert(_defaultPrefix.length()<=MAX_PREFIX_LEGNTH); // Default prefix is too long (implementation error)
|
|
|
|
// Tests if default name is valid and unique
|
|
bool defaultIs83 = is83(_defaultValue);
|
|
bool defaultIsValid = nameIsPath ? is3DSpath(_defaultValue, _extendedFilePaths) : defaultIs83;
|
|
if (defaultIsValid && _nameMap.find(_defaultValue) == _nameMap.end())
|
|
{
|
|
_nameMap.insert(_defaultValue);
|
|
return _defaultValue;
|
|
}
|
|
|
|
// Handling of paths is not well done yet. Defaulting to something very simple.
|
|
// We should actually ensure each component is 8 chars long, and final filename is 8.3, and total is <64 chars, or simply ensure total length for extended 3DS paths.
|
|
std::string defaultValue(nameIsPath ? osgDB::getSimpleFileName(_defaultValue) : _defaultValue);
|
|
std::string ext(nameIsPath ? osgDB::getFileExtensionIncludingDot(_defaultValue).substr(0, std::min<unsigned int>(_defaultValue.size(), 4)) : ""); // 4 chars = dot + 3 chars
|
|
if (ext == ".") ext = "";
|
|
|
|
std::string defaultPrefix(_defaultPrefix.empty() ? "_" : _defaultPrefix);
|
|
|
|
unsigned int max_val = 0;
|
|
std::string truncDefaultValue = "";
|
|
for (unsigned int i = 0; i < std::min<unsigned int>(defaultValue.size(), MAX_PREFIX_LEGNTH); ++i)
|
|
{
|
|
if (defaultValue[i] == '.')
|
|
{
|
|
truncDefaultValue = defaultValue.substr(0, i);
|
|
break;
|
|
}
|
|
}
|
|
if (truncDefaultValue.empty())
|
|
truncDefaultValue = defaultValue.substr(0, std::min<unsigned int>(defaultValue.size(), MAX_PREFIX_LEGNTH));
|
|
assert(truncDefaultValue.size() <= MAX_PREFIX_LEGNTH);
|
|
std::map<std::string, unsigned int>::iterator pairPrefix;
|
|
|
|
// TODO - Handle the case of extended 3DS paths and allow more than 8 chars
|
|
defaultIs83 = is83(truncDefaultValue);
|
|
if (defaultIs83)
|
|
{
|
|
max_val = static_cast<unsigned int>(pow(10., 8. - truncDefaultValue.length())) -1;
|
|
pairPrefix = _mapPrefix.find(truncDefaultValue);
|
|
}
|
|
|
|
if (defaultIs83 && (pairPrefix == _mapPrefix.end() || pairPrefix->second <= max_val))
|
|
{
|
|
defaultPrefix = truncDefaultValue;
|
|
}
|
|
else
|
|
{
|
|
max_val = static_cast<unsigned int>(pow(10., 8. - defaultPrefix.length())) -1;
|
|
pairPrefix = _mapPrefix.find(defaultPrefix);
|
|
}
|
|
|
|
unsigned int searchStart = 0;
|
|
if (pairPrefix != _mapPrefix.end())
|
|
{
|
|
searchStart = pairPrefix->second;
|
|
}
|
|
|
|
for(unsigned int i = searchStart; i <= max_val; ++i)
|
|
{
|
|
std::stringstream ss;
|
|
ss << defaultPrefix << i;
|
|
const std::string & res = ss.str();
|
|
if (_nameMap.find(res) == _nameMap.end())
|
|
{
|
|
if (pairPrefix != _mapPrefix.end())
|
|
{
|
|
pairPrefix->second = i + 1;
|
|
} else
|
|
{
|
|
_mapPrefix.insert(std::pair<std::string, unsigned int>(defaultPrefix, i + 1));
|
|
}
|
|
_nameMap.insert(res);
|
|
return res + ext;
|
|
}
|
|
}
|
|
|
|
// Failed finding a name
|
|
// Try with a shorter prefix if possible
|
|
if (defaultPrefix.length()>1) return getUniqueName(_defaultValue, defaultPrefix.substr(0, defaultPrefix.length()-1), nameIsPath);
|
|
// Try with default prefix if not arleady done
|
|
if (defaultPrefix != std::string("_")) return getUniqueName(_defaultValue, "_", nameIsPath);
|
|
|
|
// No more names
|
|
OSG_NOTIFY(osg::FATAL) << "No more names available!" << std::endl;
|
|
_succeeded = false;
|
|
return "ERROR";
|
|
}
|
|
|
|
int WriterNodeVisitor::processStateSet(osg::StateSet* ss)
|
|
{
|
|
MaterialMap::const_iterator itr = _materialMap.find(ss);
|
|
if (itr != _materialMap.end())
|
|
{
|
|
assert(itr->second.index>=0);
|
|
return itr->second.index;
|
|
}
|
|
|
|
osg::Material* mat = dynamic_cast<osg::Material*>(ss->getAttribute(osg::StateAttribute::MATERIAL));
|
|
osg::Texture* tex = dynamic_cast<osg::Texture*>(ss->getTextureAttribute(0, osg::StateAttribute::TEXTURE));
|
|
|
|
if (mat || tex)
|
|
{
|
|
int matNum = _lastMaterialIndex;
|
|
_materialMap.insert(std::make_pair(osg::ref_ptr<osg::StateSet>(ss), Material(*this, ss, mat, tex, matNum) ));
|
|
++_lastMaterialIndex;
|
|
return matNum;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Add a vertice to the index and link it with the Triangle index and the drawable.
|
|
* \param index_vert is the map where the vertice are stored.
|
|
* \param index is the indice of the vertice's position in the vec3.
|
|
* \param drawable_n is the number of the drawable.
|
|
* \return the position of the vertice in the final mesh.
|
|
*/
|
|
unsigned int
|
|
WriterNodeVisitor::getMeshIndexForGeometryIndex(MapIndices & index_vert,
|
|
unsigned int index,
|
|
unsigned int drawable_n)
|
|
{
|
|
MapIndices::iterator itIndex = index_vert.find(std::pair<unsigned int, unsigned int>(index, drawable_n));
|
|
if (itIndex == index_vert.end())
|
|
{
|
|
unsigned int indexMesh = index_vert.size();
|
|
index_vert.insert(std::make_pair(std::pair<unsigned int, unsigned int>(index, drawable_n), indexMesh));
|
|
return indexMesh;
|
|
}
|
|
return itIndex->second;
|
|
}
|
|
|
|
|
|
void
|
|
WriterNodeVisitor::buildMesh(osg::Geode & geo,
|
|
const osg::Matrix & mat,
|
|
MapIndices & index_vert,
|
|
bool texcoords,
|
|
Lib3dsMesh * mesh)
|
|
{
|
|
OSG_NOTIFY(osg::DEBUG_INFO) << "Building Mesh" << std::endl;
|
|
assert(mesh);
|
|
|
|
// Write points
|
|
assert(index_vert.size() <= MAX_VERTICES);
|
|
lib3ds_mesh_resize_vertices(mesh, index_vert.size(), texcoords ? 1 : 0, 0);
|
|
|
|
for(MapIndices::iterator it = index_vert.begin(); it != index_vert.end();++it)
|
|
{
|
|
osg::Geometry *g = geo.getDrawable( it->first.second )->asGeometry();
|
|
assert(g->getVertexArray());
|
|
if (g->getVertexArray()->getType() != osg::Array::Vec3ArrayType)
|
|
{
|
|
// TODO Handle double presision vertices by converting them to float with a warning
|
|
OSG_NOTIFY(osg::FATAL) << "Vertex array is not Vec3. Not implemented" << std::endl;
|
|
_succeeded = false;
|
|
return;
|
|
}
|
|
const osg::Vec3Array & vecs= *static_cast<osg::Vec3Array *>(g->getVertexArray());
|
|
copyOsgVectorToLib3dsVector(mesh->vertices[it->second], vecs[it->first.first]*mat);
|
|
}
|
|
|
|
// Write texture coords (Texture 0 only)
|
|
if (texcoords)
|
|
{
|
|
for(MapIndices::iterator it = index_vert.begin(); it != index_vert.end(); ++it)
|
|
{
|
|
osg::Geometry *g = geo.getDrawable( it->first.second )->asGeometry();
|
|
osg::Array * texarray = g->getTexCoordArray(0);
|
|
if (texarray)
|
|
{
|
|
if (g->getTexCoordArray(0)->getType() != osg::Array::Vec2ArrayType)
|
|
{
|
|
OSG_NOTIFY(osg::FATAL) << "Texture coords array is not Vec2. Not implemented" << std::endl;
|
|
_succeeded = false;
|
|
return;
|
|
}
|
|
const osg::Vec2Array & vecs= *static_cast<osg::Vec2Array *>(texarray);
|
|
mesh->texcos[it->second][0] = vecs[it->first.first][0];
|
|
mesh->texcos[it->second][1] = vecs[it->first.first][1];
|
|
}
|
|
}
|
|
}
|
|
lib3ds_file_insert_mesh(file3ds, mesh, _lastMeshIndex);
|
|
++_lastMeshIndex;
|
|
|
|
Lib3dsMeshInstanceNode * node3ds = lib3ds_node_new_mesh_instance(mesh, mesh->name, NULL, NULL, NULL);
|
|
lib3ds_file_append_node(file3ds, reinterpret_cast<Lib3dsNode*>(node3ds), reinterpret_cast<Lib3dsNode*>(_cur3dsNode));
|
|
}
|
|
|
|
unsigned int
|
|
WriterNodeVisitor::calcVertices(osg::Geode & geo)
|
|
{
|
|
unsigned int numVertice = 0;
|
|
for (unsigned int i = 0; i < geo.getNumDrawables(); ++i)
|
|
{
|
|
osg::Geometry *g = geo.getDrawable( i )->asGeometry();
|
|
assert(g->getVertexArray());
|
|
if (g->getVertexArray()->getType() != osg::Array::Vec3ArrayType)
|
|
{
|
|
// TODO Handle double presision vertices by converting them to float with a warning
|
|
OSG_NOTIFY(osg::FATAL) << "Vertex array is not Vec3. Not implemented" << std::endl;
|
|
_succeeded = false;
|
|
return 0;
|
|
}
|
|
const osg::Vec3Array & vecs= *static_cast<osg::Vec3Array *>(g->getVertexArray());
|
|
numVertice += vecs.getNumElements();
|
|
}
|
|
return numVertice;
|
|
}
|
|
|
|
|
|
void
|
|
WriterNodeVisitor::buildFaces(osg::Geode & geo,
|
|
const osg::Matrix & mat,
|
|
ListTriangle & listTriangles,
|
|
bool texcoords)
|
|
{
|
|
unsigned int nbTrianglesRemaining = listTriangles.size();
|
|
unsigned int nbVerticesRemaining = calcVertices(geo); // May set _succeded to false
|
|
if (!succeeded()) return;
|
|
|
|
std::string name( getUniqueName(geo.getName().empty() ? geo.className() : geo.getName(), "geo") );
|
|
if (!succeeded()) return;
|
|
Lib3dsMesh *mesh = lib3ds_mesh_new( name.c_str() );
|
|
if (!mesh)
|
|
{
|
|
OSG_NOTIFY(osg::FATAL) << "Allocation error" << std::endl;
|
|
_succeeded = false;
|
|
return;
|
|
}
|
|
|
|
lib3ds_mesh_resize_faces (mesh, osg::minimum(nbTrianglesRemaining, MAX_FACES));
|
|
lib3ds_mesh_resize_vertices(mesh, osg::minimum(nbVerticesRemaining, MAX_VERTICES), texcoords ? 0 : 1, 0); // Not mandatory but will allocate once a big block
|
|
|
|
// Test if the mesh will be split and needs sorting
|
|
if (nbVerticesRemaining >= MAX_VERTICES || nbTrianglesRemaining >= MAX_FACES)
|
|
{
|
|
OSG_NOTIFY(osg::INFO) << "Sorting elements..." << std::endl;
|
|
WriterCompareTriangle cmp(geo, nbVerticesRemaining);
|
|
std::sort(listTriangles.begin(), listTriangles.end(), cmp);
|
|
}
|
|
|
|
MapIndices index_vert;
|
|
unsigned int numFace = 0; // Current face index
|
|
for (ListTriangle::iterator it = listTriangles.begin(); it != listTriangles.end(); ++it) //Go through the triangle list to define meshs
|
|
{
|
|
// Test if the mesh will be full after adding a face
|
|
if (index_vert.size()+3 >= MAX_VERTICES || numFace+1 >= MAX_FACES)
|
|
{
|
|
// Finnish mesh
|
|
lib3ds_mesh_resize_faces (mesh, numFace);
|
|
//lib3ds_mesh_resize_vertices() will be called in buildMesh()
|
|
buildMesh(geo, mat, index_vert, texcoords, mesh); // May set _succeded to false
|
|
if (!succeeded())
|
|
{
|
|
lib3ds_mesh_free(mesh);
|
|
return;
|
|
}
|
|
|
|
// "Reset" values and start over a new mesh
|
|
index_vert.clear();
|
|
nbTrianglesRemaining -= numFace;
|
|
numFace = 0;
|
|
// We can't call a thing like "nbVerticesRemaining -= ...;" because points may be used multiple times.
|
|
// [Sukender: An optimisation here would take too much time I think.]
|
|
|
|
mesh = lib3ds_mesh_new( getUniqueName(geo.getName().empty() ? geo.className() : geo.getName(), "geo").c_str());
|
|
if (!mesh)
|
|
{
|
|
OSG_NOTIFY(osg::FATAL) << "Allocation error" << std::endl;
|
|
_succeeded = false;
|
|
return;
|
|
}
|
|
lib3ds_mesh_resize_faces (mesh, osg::minimum(nbTrianglesRemaining, MAX_FACES));
|
|
lib3ds_mesh_resize_vertices(mesh, osg::minimum(nbVerticesRemaining, MAX_VERTICES), texcoords ? 0 : 1, 0); // Not mandatory but will allocate once a big block
|
|
}
|
|
Lib3dsFace & face = mesh->faces[numFace++];
|
|
face.index[0] = getMeshIndexForGeometryIndex(index_vert, it->first.t1, it->second);
|
|
face.index[1] = getMeshIndexForGeometryIndex(index_vert, it->first.t2, it->second);
|
|
face.index[2] = getMeshIndexForGeometryIndex(index_vert, it->first.t3, it->second);
|
|
face.material = it->first.material;
|
|
}
|
|
|
|
buildMesh(geo, mat, index_vert, texcoords, mesh); // May set _succeded to false
|
|
if (!succeeded())
|
|
{
|
|
lib3ds_mesh_free(mesh);
|
|
return;
|
|
}
|
|
}
|
|
|
|
void
|
|
WriterNodeVisitor::createListTriangle(osg::Geometry * geo,
|
|
ListTriangle & listTriangles,
|
|
bool & texcoords,
|
|
unsigned int & drawable_n)
|
|
{
|
|
unsigned int nbVertices = 0;
|
|
{
|
|
if (geo->getVertexArray() && geo->getVertexArray()->getType() != osg::Array::Vec3ArrayType)
|
|
{
|
|
// TODO Handle double presision vertices by converting them to float with a warning
|
|
OSG_NOTIFY(osg::FATAL) << "Vertex array is not Vec3. Not implemented" << std::endl;
|
|
_succeeded = false;
|
|
return;
|
|
}
|
|
const osg::Vec3Array * vecs = geo->getVertexArray() ? static_cast<osg::Vec3Array *>(geo->getVertexArray()) : NULL;
|
|
if (vecs)
|
|
{
|
|
nbVertices = geo->getVertexArray()->getNumElements();
|
|
// Texture coords
|
|
if (geo->getTexCoordArray(0) && geo->getTexCoordArray(0)->getType() != osg::Array::Vec2ArrayType)
|
|
{
|
|
OSG_NOTIFY(osg::FATAL) << "Texture coords array is not Vec2. Not implemented" << std::endl;
|
|
_succeeded = false;
|
|
return;
|
|
}
|
|
const osg::Vec2Array * texvecs = geo->getTexCoordArray(0) ? static_cast<osg::Vec2Array *>(geo->getTexCoordArray(0)) : NULL;
|
|
if (texvecs)
|
|
{
|
|
unsigned int nb = geo->getTexCoordArray(0)->getNumElements();
|
|
if (nb != geo->getVertexArray()->getNumElements())
|
|
{
|
|
OSG_NOTIFY(osg::FATAL) << "There are more/less texture coords than vertices (corrupted geometry)" << std::endl;
|
|
_succeeded = false;
|
|
return;
|
|
}
|
|
texcoords = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nbVertices==0) return;
|
|
|
|
int material = processStateSet(_currentStateSet.get());
|
|
|
|
for(unsigned int i = 0; i < geo->getNumPrimitiveSets(); ++i) //Fill the Triangle List
|
|
{
|
|
osg::PrimitiveSet* ps = geo->getPrimitiveSet(i);
|
|
PrimitiveIndexWriter pif(geo, listTriangles, drawable_n, material);
|
|
ps->accept(pif);
|
|
}
|
|
}
|
|
|
|
void WriterNodeVisitor::apply( osg::Geode &node )
|
|
{
|
|
pushStateSet(node.getStateSet());
|
|
//_nameStack.push_back(node.getName());
|
|
unsigned int count = node.getNumDrawables();
|
|
ListTriangle listTriangles;
|
|
bool texcoords = false;
|
|
for ( unsigned int i = 0; i < count; i++ )
|
|
{
|
|
osg::Geometry *g = node.getDrawable( i )->asGeometry();
|
|
if ( g != NULL )
|
|
{
|
|
pushStateSet(g->getStateSet());
|
|
createListTriangle(g, listTriangles, texcoords, i); // May set _succeded to false
|
|
popStateSet(g->getStateSet());
|
|
if (!succeeded()) break;
|
|
}
|
|
}
|
|
if (succeeded() && count > 0)
|
|
{
|
|
osg::Matrix mat( osg::computeLocalToWorld(getNodePath()) );
|
|
buildFaces(node, mat, listTriangles, texcoords); // May set _succeded to false
|
|
}
|
|
popStateSet(node.getStateSet());
|
|
//_nameStack.pop_back();
|
|
if (succeeded())
|
|
traverse(node);
|
|
}
|
|
|
|
void WriterNodeVisitor::apply( osg::Billboard &node )
|
|
{
|
|
// TODO Does not handle Billboards' points yet
|
|
|
|
pushStateSet(node.getStateSet());
|
|
Lib3dsMeshInstanceNode * parent = _cur3dsNode;
|
|
|
|
unsigned int count = node.getNumDrawables();
|
|
ListTriangle listTriangles;
|
|
bool texcoords = false;
|
|
OSG_NOTIFY(osg::NOTICE) << "Warning: 3DS writer is incomplete for Billboards (rotation not implemented)." << std::endl;
|
|
osg::Matrix m( osg::computeLocalToWorld(getNodePath()) );
|
|
for ( unsigned int i = 0; i < count; i++ )
|
|
{
|
|
osg::Geometry *g = node.getDrawable( i )->asGeometry();
|
|
if ( g != NULL )
|
|
{
|
|
listTriangles.clear();
|
|
_cur3dsNode = parent;
|
|
|
|
pushStateSet(g->getStateSet());
|
|
createListTriangle(g, listTriangles, texcoords, i);
|
|
popStateSet(g->getStateSet()); // May set _succeded to false
|
|
if (!succeeded()) break;
|
|
|
|
osg::Matrix currentBillBoardMat(osg::Matrix::translate(node.getPosition(i)) * m); // TODO handle rotation
|
|
apply3DSMatrixNode(node, currentBillBoardMat, "bil"); // Add a 3DS matrix node
|
|
buildFaces(node, currentBillBoardMat, listTriangles, texcoords); // May set _succeded to false
|
|
if (!succeeded()) break;
|
|
}
|
|
}
|
|
|
|
if (succeeded())
|
|
traverse(node);
|
|
_cur3dsNode = parent;
|
|
popStateSet(node.getStateSet());
|
|
}
|
|
|
|
|
|
|
|
void WriterNodeVisitor::apply(osg::Group &node)
|
|
{
|
|
pushStateSet(node.getStateSet());
|
|
Lib3dsMeshInstanceNode * parent = _cur3dsNode;
|
|
apply3DSMatrixNode(node, osg::computeLocalToWorld(getNodePath()), "grp");
|
|
if (succeeded())
|
|
traverse(node);
|
|
_cur3dsNode = parent;
|
|
popStateSet(node.getStateSet());
|
|
}
|
|
|
|
void WriterNodeVisitor::apply(osg::MatrixTransform &node)
|
|
{
|
|
pushStateSet(node.getStateSet());
|
|
Lib3dsMeshInstanceNode * parent = _cur3dsNode;
|
|
apply3DSMatrixNode(node, osg::computeLocalToWorld(getNodePath()), "mtx");
|
|
if (succeeded())
|
|
traverse(node);
|
|
_cur3dsNode = parent;
|
|
popStateSet(node.getStateSet());
|
|
}
|
|
|
|
void WriterNodeVisitor::apply3DSMatrixNode(osg::Node &node, const osg::Matrix & m, const char * const prefix)
|
|
{
|
|
Lib3dsMeshInstanceNode * parent = _cur3dsNode;
|
|
|
|
//const osg::Matrix & m = node.getMatrix();
|
|
//const osg::Matrix m( osg::computeLocalToWorld(nodePath) ); // [NEEDS TESTING!] 3DS matrices always contain world to local transformation (not local transform; ie. from parent)
|
|
|
|
// Transform data used to be given to lib3ds_node_new_mesh_instance(), but it seems buggy (pivot problem? bug in conversion?).
|
|
float pos[3];
|
|
float scl[3];
|
|
float rot[4];
|
|
osg::Vec3 osgScl, osgPos;
|
|
osg::Quat osgRot, osgSo;
|
|
m.decompose(osgPos, osgRot, osgScl, osgSo);
|
|
copyOsgVectorToLib3dsVector(pos, osgPos);
|
|
copyOsgVectorToLib3dsVector(scl, osgScl);
|
|
copyOsgQuatToLib3dsQuat(rot, osgRot);
|
|
Lib3dsMeshInstanceNode * node3ds = lib3ds_node_new_mesh_instance
|
|
(NULL, getUniqueName(node.getName().empty() ? node.className() : node.getName(), prefix).c_str(), pos, scl, rot);
|
|
|
|
//// Create a mesh instance with no transform and then copy the matrix (doesn't work)
|
|
//Lib3dsMeshInstanceNode * node3ds = lib3ds_node_new_mesh_instance
|
|
// (NULL, getUniqueName(node.getName().empty() ? node.className() : node.getName(), "mtx").c_str(), NULL, NULL, NULL);
|
|
// copyOsgMatrixToLib3dsMatrix(node3ds->base.matrix, m);
|
|
|
|
lib3ds_file_append_node(file3ds, reinterpret_cast<Lib3dsNode*>(node3ds), reinterpret_cast<Lib3dsNode*>(parent));
|
|
_cur3dsNode = node3ds;
|
|
}
|