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author | Maxime Curioni <maxime.curioni@gmail.com> | 2008-05-08 23:16:40 +0400 |
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committer | Maxime Curioni <maxime.curioni@gmail.com> | 2008-05-08 23:16:40 +0400 |
commit | 64e4a3ec9aed6c8abe095e2cd1fe1552f7cde51c (patch) | |
tree | 6c77358bd447b6c2d215324ef48fc12d1f5ae5ca /source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.h | |
parent | cf2e1e2857cfc5b3c2848c7fc6c9d919ac72fabb (diff) | |
parent | 106974a9d2d5caa5188322507980e3d57d2e3517 (diff) |
soc-2008-mxcurioni: merged changes to revision 14747, cosmetic changes for source/blender/freestyle
Diffstat (limited to 'source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.h')
-rwxr-xr-x | source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.h b/source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.h new file mode 100755 index 00000000000..159dda1afc0 --- /dev/null +++ b/source/blender/freestyle/intern/view_map/SilhouetteGeomEngine.h @@ -0,0 +1,122 @@ +// +// Filename : SilhouetteGeomEngine.h +// Author(s) : Stephane Grabli +// Purpose : Class to perform all geometric operations dedicated +// to silhouette. That, for example, implies that +// this geom engine has as member data the viewpoint, +// transformations, projections... +// Date of creation : 03/09/2002 +// +/////////////////////////////////////////////////////////////////////////////// + + +// +// 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 SILHOUETTEGEOMENGINE_H +# define SILHOUETTEGEOMENGINE_H + +# include <vector> +# include "../system/FreestyleConfig.h" +# include "../geometry/Geom.h" + +using namespace Geometry; + +class SVertex; +class FEdge; + +class LIB_VIEW_MAP_EXPORT SilhouetteGeomEngine +{ +private: + static Vec3r _Viewpoint; // The viewpoint under which the silhouette has to be computed + static real _translation[3]; + static real _modelViewMatrix[4][4]; // the model view matrix (_modelViewMatrix[i][j] means element of line i and column j) + static real _projectionMatrix[4][4]; // the projection matrix (_projectionMatrix[i][j] means element of line i and column j) + static real _transform[4][4]; // the global transformation from world to screen (projection included) (_transform[i][j] means element of line i and column j) + static int _viewport[4]; // the viewport + static real _Focal; + + static real _znear; + static real _zfar; + + static real _glProjectionMatrix[4][4]; // GL style (column major) projection matrix + static real _glModelViewMatrix[4][4]; // GL style (column major) model view matrix + + + + static SilhouetteGeomEngine *_pInstance; +public: + + /*! retrieves an instance on the singleton */ + static SilhouetteGeomEngine * getInstance() + { + if(0 == _pInstance) + { + _pInstance = new SilhouetteGeomEngine; + } + return _pInstance; + } + + /*! Sets the current viewpoint */ + static inline void SetViewpoint(const Vec3r& ivp) {_Viewpoint = ivp;} + + /*! Sets the current transformation + * iModelViewMatrix + * The 4x4 model view matrix, in column major order (openGL like). + * iProjection matrix + * The 4x4 projection matrix, in column major order (openGL like). + * iViewport + * The viewport. 4 real array: origin.x, origin.y, width, length + * iFocal + * The focal length + */ + static void SetTransform(const real iModelViewMatrix[4][4], const real iProjectionMatrix[4][4], const int iViewport[4], real iFocal) ; + + /*! Sets the current znear and zfar + */ + static void SetFrustum(real iZNear, real iZFar) ; + + /* accessors */ + static void retrieveViewport(int viewport[4]); + + /*! Projects the silhouette in camera coordinates + * This method modifies the ioEdges passed as argument. + * ioVertices + * The vertices to project. It is modified during the + * operation. + */ + static void ProjectSilhouette(std::vector<SVertex*>& ioVertices); + static void ProjectSilhouette(SVertex* ioVertex); + + /*! transforms the parameter t defining a 2D intersection for edge fe in order to obtain + * the parameter giving the corresponding 3D intersection. + * Returns the 3D parameter + * fe + * The edge + * t + * The parameter for the 2D intersection. + */ + static real ImageToWorldParameter(FEdge *fe, real t); + + /*! From world to image */ + static Vec3r WorldToImage(const Vec3r& M); +}; + +#endif // SILHOUETTEGEOMENGINE_H |