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Diffstat (limited to 'source/blender/freestyle/intern/winged_edge/WXEdge.h')
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1 files changed, 582 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/winged_edge/WXEdge.h b/source/blender/freestyle/intern/winged_edge/WXEdge.h new file mode 100755 index 00000000000..c51b6a84a98 --- /dev/null +++ b/source/blender/freestyle/intern/winged_edge/WXEdge.h @@ -0,0 +1,582 @@ +// +// Filename : WXEdge.h +// Author(s) : Stephane Grabli +// Purpose : Classes to define an Extended Winged Edge data structure. +// Date of creation : 26/10/2003 +// +/////////////////////////////////////////////////////////////////////////////// + + +// +// Copyright (C) : Please refer to the COPYRIGHT file distributed +// with this source distribution. +// +// This program is free software; you can redistribute it and/or +// modify it under the terms of the GNU General Public License +// as published by the Free Software Foundation; either version 2 +// of the License, or (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +/////////////////////////////////////////////////////////////////////////////// + +#ifndef WXEDGE_H +# define WXEDGE_H + +# include "WEdge.h" +# include "Nature.h" +# include "Curvature.h" + +typedef Nature::EdgeNature WXNature; + + /**********************************/ + /* */ + /* */ + /* WXVertex */ + /* */ + /* */ + /**********************************/ + +class WXVertex : public WVertex +{ +private: + // Curvature info + CurvatureInfo *_curvatures; + +public: + inline WXVertex(const Vec3r &v) + : WVertex(v) + {_curvatures = 0;} + /*! Copy constructor */ + WXVertex(WXVertex& iBrother) + : WVertex(iBrother) + {_curvatures = new CurvatureInfo(*iBrother._curvatures);} + virtual WVertex * duplicate() + { + WXVertex *clone = new WXVertex(*this); + return clone; + } + virtual ~WXVertex() {if(_curvatures) delete _curvatures;} + virtual void Reset() {if(_curvatures) _curvatures->Kr = 0.0;} + inline void setCurvatures(CurvatureInfo *ci) {_curvatures = ci;} + + inline bool isFeature(); + inline CurvatureInfo* curvatures() {return _curvatures;} + +}; + + + + /**********************************/ + /* */ + /* */ + /* WXEdge */ + /* */ + /* */ + /**********************************/ +class WXEdge : public WEdge +{ +private: + WXNature _nature; // flag to indicate whether the edge is a silhouette edge or not + int _order; // 0: the order doesn't matter. 1: the order is the orginal one. -1: the order is not good + bool _front; // a front facing edge is an edge for which the bording face which is the nearest + // from the viewpoint is front. A back facing edge is the opposite. + +public: + inline WXEdge() + : WEdge(){ + _nature = Nature::NO_FEATURE; + _front = false; + _order=0; + } + + inline WXEdge(WOEdge *iOEdge) + : WEdge(iOEdge) + { _nature = Nature::NO_FEATURE;_front = false;_order=0;} + + inline WXEdge(WOEdge *iaOEdge, WOEdge *ibOEdge) + : WEdge(iaOEdge, ibOEdge) + { _nature = Nature::NO_FEATURE;_front = false;_order=0;} + + /*! Copy constructor */ + inline WXEdge(WXEdge& iBrother) + : WEdge(iBrother) + {_nature = iBrother.nature();_front = iBrother._front;_order = iBrother._order;} + virtual WEdge * duplicate() + { + WXEdge *clone = new WXEdge(*this); + return clone; + } + + virtual ~WXEdge() + {} + + virtual void Reset(){ + _nature = _nature & ~Nature::SILHOUETTE; + _nature = _nature & ~Nature::SUGGESTIVE_CONTOUR; + } + + /*! accessors */ + inline WXNature nature() {return _nature;} + inline bool front() {return _front;} + inline int order() const {return _order;} + + /*! modifiers */ + inline void setFront(bool iFront) {_front = iFront;} + inline void setNature(WXNature iNature) {_nature = iNature;} + inline void AddNature(WXNature iNature) {_nature = _nature|iNature;} + inline void setOrder(int i) {_order = i;} + +}; + + /**********************************/ + /* */ + /* */ + /* WXFace */ + /* */ + /* */ + /**********************************/ + +/*! Class to store a smooth edge (i.e Hertzman & Zorin smooth silhouette edges) */ +class WXSmoothEdge{ +public: + typedef enum{ + EDGE_EDGE, + VERTEX_EDGE, + EDGE_VERTEX + } Configuration; + + WOEdge *_woea; // Oriented edge from which the silhouette edge starts + WOEdge *_woeb; // Oriented edge where the silhouette edge ends + real _ta; // The silhouette starting point's coordinates are : _woea[0]+ta*(_woea[1]-_woea[0]) + real _tb; // The silhouette ending point's coordinates are : _woeb[0]+ta*(_woeb[1]-_woeb[0]) + bool _front; + Configuration _config; + + WXSmoothEdge(){ + _woea = 0; + _woeb = 0; + _ta = 0; + _tb = 0; + _front = false; + _config = EDGE_EDGE; + } + WXSmoothEdge(const WXSmoothEdge& iBrother){ + _woea = iBrother._woea; + _woeb = iBrother._woeb; + _ta = iBrother._ta; + _tb = iBrother._tb; + _config = iBrother._config; + _front = iBrother._front; + } + ~WXSmoothEdge() {} + + inline WOEdge * woea() {return _woea;} + inline WOEdge * woeb() {return _woeb;} + inline real ta() const {return _ta;} + inline real tb() const {return _tb;} + inline bool front() const {return _front;} + inline Configuration configuration() const {return _config;} + + /*! modifiers */ + inline void setWOeA(WOEdge *iwoea) {_woea = iwoea;} + inline void setWOeB(WOEdge *iwoeb) {_woeb = iwoeb;} + inline void setTa(real ta) {_ta = ta;} + inline void setTb(real tb) {_tb = tb;} + inline void setFront(bool iFront) {_front = iFront;} + inline void setConfiguration(Configuration iConf) {_config = iConf;} + +}; +/* Class to store a value per vertex and a smooth edge. + * The WXFace stores a list of these + */ +class WXFace; +class LIB_WINGED_EDGE_EXPORT WXFaceLayer{ +public: + void * userdata; + WXFace * _pWXFace; + vector<real> _DotP;// in case of silhouette: the values obtained when computing the normal-view direction + // dot product. _DotP[i] is this value for the vertex i for that + // face. + WXSmoothEdge * _pSmoothEdge; + WXNature _Nature; + + //oldtmp values + unsigned _nPosDotP; // count the number of positive dot products for vertices. + // if this number is != 0 and !=_DotP.size() -> it is a silhouette fac + + unsigned _nNullDotP; // count the number of null dot products for vertices. + unsigned _ClosestPointIndex; + bool _viewDependant; + + WXFaceLayer(WXFace *iFace, WXNature iNature, bool viewDependant){ + _pWXFace = iFace; + _pSmoothEdge = 0; + _nPosDotP = 0; + _nNullDotP=0; + _Nature = iNature; + _viewDependant = viewDependant; + userdata = 0; + } + WXFaceLayer(const WXFaceLayer& iBrother){ + _pWXFace = iBrother._pWXFace; + _pSmoothEdge = 0; + _DotP = iBrother._DotP; + _nPosDotP = iBrother._nPosDotP; + _nNullDotP = iBrother._nNullDotP; + _Nature = iBrother._Nature; + if(0 != iBrother._pSmoothEdge) + { + _pSmoothEdge = new WXSmoothEdge(*(iBrother._pSmoothEdge)); + } + _viewDependant = iBrother._viewDependant; + userdata = 0; + } + virtual ~WXFaceLayer() { + if(!_DotP.empty()) + _DotP.clear(); + if(0 != _pSmoothEdge){ + delete _pSmoothEdge; + _pSmoothEdge = 0; + } + } + inline const real dotP(int i) const {return _DotP[i];} + inline unsigned nPosDotP() const {return _nPosDotP;} + inline unsigned nNullDotP() const {return _nNullDotP;} + inline int closestPointIndex() const {return _ClosestPointIndex;} + inline Nature::EdgeNature nature() const {return _Nature;} + inline bool hasSmoothEdge() const {if(_pSmoothEdge) return true; return false;} + inline WXFace * getFace() {return _pWXFace;} + inline WXSmoothEdge * getSmoothEdge() {return _pSmoothEdge;} + inline bool isViewDependant() const {return _viewDependant;} + inline void setClosestPointIndex(int iIndex) {_ClosestPointIndex = iIndex;} + + inline void removeSmoothEdge() { + if(!_DotP.empty()) + _DotP.clear(); + if (_pSmoothEdge) { + delete _pSmoothEdge; + _pSmoothEdge = 0; + } + } + + /*! If one of the face layer vertex has a DotP equal + * to 0, this method returns the vertex where it happens + */ + unsigned int Get0VertexIndex() const ; + + /*! In case one of the edge of the triangle + * is a smooth edge, this method + * allows to retrieve the concerned edge + */ + unsigned int GetSmoothEdgeIndex() const; + /*! retrieves the edges of the triangle for which + * the signs are different (a null value is not considered) for the dotp + * values at each edge extrimity + */ + void RetrieveCuspEdgesIndices(vector<int>& oCuspEdges); + WXSmoothEdge * BuildSmoothEdge(); + inline void setDotP(const vector<real>& iDotP) {_DotP = iDotP;} + inline void PushDotP(real iDotP) { + _DotP.push_back(iDotP); + if(iDotP > 0) + ++_nPosDotP; + if(iDotP == 0) + ++_nNullDotP; + } + inline void ReplaceDotP(unsigned int index, real newDotP){ + _DotP[index] = newDotP; + updateDotPInfos(); + } + inline void updateDotPInfos() { + _nPosDotP = 0; + _nNullDotP = 0; + for(vector<real>::iterator d=_DotP.begin(), dend=_DotP.end(); + d!=dend; + ++d){ + if((*d) > 0) + ++_nPosDotP; + if((*d) == 0) + ++_nNullDotP; + } + } +}; + + +class WXFace : public WFace +{ +protected: + Vec3r _center; // center of the face + real _Z; // distance from viewpoint to the center of the face + bool _front; // flag to tell whether the face is front facing or back facing + real _dotp; // value obtained when computing the normal-viewpoint dot product + + vector<WXFaceLayer*> _SmoothLayers; // The data needed to store one or several smooth edges that traverse the face +public: + inline WXFace() : WFace() {_Z=0.0;_front = false;} + /*! Copy constructor */ + WXFace(WXFace& iBrother) + : WFace(iBrother) + { + _center = iBrother.center(); + _Z = iBrother.Z(); + _front = iBrother.front(); + for(vector<WXFaceLayer*>::iterator wxf = iBrother._SmoothLayers.begin(), wxfend = iBrother._SmoothLayers.end(); + wxf != wxfend; + ++wxf){ + _SmoothLayers.push_back(new WXFaceLayer(**wxf)); + } + } + virtual WFace * duplicate() + { + WXFace * clone = new WXFace(*this); + return clone; + } + + virtual ~WXFace() { + if(!_SmoothLayers.empty()){ + for(vector<WXFaceLayer*>::iterator wxf = _SmoothLayers.begin(), wxfend = _SmoothLayers.end(); + wxf != wxfend; + ++wxf){ + delete (*wxf); + } + _SmoothLayers.clear(); + } + } + + /*! designed to build a specialized WEdge + * for use in MakeEdge + */ + virtual WEdge * instanciateEdge() const {return new WXEdge;} + + /*! accessors */ + inline Vec3r& center() {return _center;} + inline real Z() {return _Z;} + inline bool front() {return _front;} + inline real dotp() {return _dotp;} + inline bool hasSmoothEdges() const { + for(vector<WXFaceLayer*>::const_iterator wxf = _SmoothLayers.begin(), wxfend = _SmoothLayers.end(); + wxf != wxfend; + ++wxf){ + if( ((*wxf)->hasSmoothEdge())){ + return true; + } + } + return false; + } + vector<WXFaceLayer*>& getSmoothLayers() {return _SmoothLayers;} + /*! retrieve the smooth edges that match the Nature given as argument */ + void retrieveSmoothEdges(WXNature iNature, vector<WXSmoothEdge*>& oSmoothEdges){ + for(vector<WXFaceLayer*>::iterator wxf = _SmoothLayers.begin(), wxfend = _SmoothLayers.end(); + wxf != wxfend; + ++wxf){ + if( ((*wxf)->hasSmoothEdge()) && ((*wxf)->_Nature & iNature) ){ + oSmoothEdges.push_back((*wxf)->_pSmoothEdge); + } + } + } + void retrieveSmoothEdgesLayers(WXNature iNature, vector<WXFaceLayer*>& oSmoothEdgesLayers){ + for(vector<WXFaceLayer*>::iterator wxf = _SmoothLayers.begin(), wxfend = _SmoothLayers.end(); + wxf != wxfend; + ++wxf){ + if( ((*wxf)->hasSmoothEdge()) && ((*wxf)->_Nature & iNature) ){ + oSmoothEdgesLayers.push_back((*wxf)); + } + } + } + void retrieveSmoothLayers(WXNature iNature, vector<WXFaceLayer*>& oSmoothLayers){ + for(vector<WXFaceLayer*>::iterator wxf = _SmoothLayers.begin(), wxfend = _SmoothLayers.end(); + wxf != wxfend; + ++wxf){ + if((*wxf)->_Nature & iNature){ + oSmoothLayers.push_back(*wxf); + } + } + } + /*! modifiers */ + inline void setCenter(const Vec3r& iCenter) {_center = iCenter;} + void ComputeCenter(); + inline void setZ(real z) {_Z = z;} + inline void setFront(bool iFront) {_front = iFront;} + inline void setDotP(real iDotP) + { + _dotp = iDotP; + if(_dotp > 0) + _front = true; + else + _front = false; + } + inline void AddSmoothLayer(WXFaceLayer * iLayer){ + _SmoothLayers.push_back(iLayer); + } + inline void Reset() { + vector<WXFaceLayer*> layersToKeep; + for(vector<WXFaceLayer*>::iterator wxf = _SmoothLayers.begin(), wxfend = _SmoothLayers.end(); + wxf != wxfend; + ++wxf){ + if((*wxf)->isViewDependant()) + delete (*wxf); + else + layersToKeep.push_back(*wxf); + } + _SmoothLayers = layersToKeep; + } + /*! Clears everything */ + inline void Clear() { + for(vector<WXFaceLayer*>::iterator wxf = _SmoothLayers.begin(), wxfend = _SmoothLayers.end(); + wxf != wxfend; + ++wxf){ + delete (*wxf); + } + _SmoothLayers.clear(); + } + virtual void ResetUserData() { + WFace::ResetUserData(); + for(vector<WXFaceLayer*>::iterator wxf = _SmoothLayers.begin(), wxfend = _SmoothLayers.end(); + wxf != wxfend; + ++wxf){ + (*wxf)->userdata = 0; + } + } +}; + + + /**********************************/ + /* */ + /* */ + /* WXShape */ + /* */ + /* */ + /**********************************/ + + +class WXShape : public WShape +{ +public: + typedef WXShape type_name; +protected: + bool _computeViewIndependant; // flag to indicate whether the view independant stuff must be computed or not +public: + inline WXShape() : WShape() {_computeViewIndependant = true;} + /*! copy constructor */ + inline WXShape(WXShape& iBrother) + :WShape(iBrother) + { + _computeViewIndependant = iBrother._computeViewIndependant; + } + virtual WShape * duplicate() + { + WXShape *clone = new WXShape(*this); + return clone; + } + + virtual ~WXShape() + { + } + + inline bool getComputeViewIndependantFlag() const {return _computeViewIndependant;} + inline void setComputeViewIndependantFlag(bool iFlag) {_computeViewIndependant = iFlag;} + + /*! designed to build a specialized WFace + * for use in MakeFace + */ + virtual WFace * instanciateFace() const {return new WXFace;} + + /*! adds a new face to the shape + * returns the built face. + * iVertexList + * List of face's vertices. These vertices are + * not added to the WShape vertex list; they are + * supposed to be already stored when calling MakeFace. + * The order in which the vertices are stored in the list + * determines the face's edges orientation and (so) the + * face orientation. + */ + virtual WFace * MakeFace(vector<WVertex*>& iVertexList, vector<bool>& iFaceEdgeMarksList, unsigned iMaterialIndex); + + /*! adds a new face to the shape. The difference with + * the previous method is that this one is designed + * to build a WingedEdge structure for which there are + * per vertex normals, opposed to per face normals. + * returns the built face. + * iVertexList + * List of face's vertices. These vertices are + * not added to the WShape vertex list; they are + * supposed to be already stored when calling MakeFace. + * The order in which the vertices are stored in the list + * determines the face's edges orientation and (so) the + * face orientation. + * iNormalsList + * The list of normals, iNormalsList[i] corresponding to the + * normal of the vertex iVertexList[i] for that face. + * iTexCoordsList + * The list of tex coords, iTexCoordsList[i] corresponding to the + * normal of the vertex iVertexList[i] for that face. + */ + virtual WFace * MakeFace(vector<WVertex*>& iVertexList, vector<Vec3r>& iNormalsList, vector<Vec2r>& iTexCoordsList, vector<bool>& iFaceEdgeMarksList, unsigned iMaterialIndex); + + /*! Reset all edges and vertices flags (which might + * have been set up on a previous pass) + */ + virtual void Reset(){ + // Reset Edges + vector<WEdge*>& wedges = getEdgeList(); + for(vector<WEdge*>::iterator we=wedges.begin(),weend=wedges.end(); + we!=weend; + we++){ + ((WXEdge*)(*we))->Reset(); + } + + //Reset faces: + vector<WFace*>& wfaces = GetFaceList(); + for(vector<WFace*>::iterator wf=wfaces.begin(),wfend=wfaces.end(); + wf!=wfend; + wf++){ + ((WXFace*)(*wf))->Reset(); + } + } + /*! accessors */ +}; + +/* + + ############################################# + ############################################# + ############################################# + ###### ###### + ###### I M P L E M E N T A T I O N ###### + ###### ###### + ############################################# + ############################################# + ############################################# + +*/ +/* for inline functions */ + +bool WXVertex::isFeature() +{ + int counter = 0; + vector<WEdge*>& vedges = GetEdges(); + for(vector<WEdge*>::iterator ve=vedges.begin(), vend=vedges.end(); + ve!=vend; + ve++) + { + if(((WXEdge*)(*ve))->nature() != Nature::NO_FEATURE) + counter++; + } + + if((counter == 1) || (counter > 2)) + return true; + + return false; +} + + +#endif |