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Diffstat (limited to 'source/blender/freestyle/intern/geometry/Polygon.h')
| -rw-r--r-- | source/blender/freestyle/intern/geometry/Polygon.h | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/geometry/Polygon.h b/source/blender/freestyle/intern/geometry/Polygon.h new file mode 100644 index 00000000000..5ee4353ef5a --- /dev/null +++ b/source/blender/freestyle/intern/geometry/Polygon.h @@ -0,0 +1,221 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2010 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#ifndef __POLYGON_H__ +#define __POLYGON_H__ + +/** \file blender/freestyle/intern/geometry/Polygon.h + * \ingroup freestyle + * \brief Class to define a polygon + * \author Stephane Grabli + * \date 30/07/2002 + */ + +#include <vector> + +#include "Geom.h" +#include "GeomUtils.h" + +using namespace std; + +namespace Geometry { + +template <class Point> +class Polygon +{ +public: + inline Polygon() + { + _id = 0; + userdata = 0; + userdata2 = 0; + } + + inline Polygon(const vector<Point>& vertices) + { + _vertices = vertices; + computeBBox(); + _id = 0; + userdata = 0; + userdata2 = 0; + } + + inline Polygon(const Polygon<Point>& poly) + { + Point p; + for (typename vector<Point>::const_iterator it = poly.getVertices().begin(); + it != poly.getVertices().end(); + it++) + { + p = *it; + _vertices.push_back(p); + } + + _id = poly.getId(); + poly.getBBox(_min, _max); + userdata = 0; + userdata2 = 0; + } + + virtual ~Polygon() {} + + // + // Accessors + // + ///////////////////////////////////////////////////////////////////////////// + inline const vector<Point>& getVertices() const + { + return _vertices; + } + + inline void getBBox(Point& min, Point& max) const + { + min = _min; + max = _max; + } + + inline Point& getBBoxCenter() + { + Point result; + result = (_min + _max) / 2; + return result; + } + + inline Point& getCenter() + { + Point result; + for (typename vector<Point>::iterator it = _vertices.begin(); it != _vertices.end(); it++) + result += *it; + result /= _vertices.size(); + return result; + } + + inline unsigned getId() const + { + return _id; + } + + // + // Modifiers + // + ///////////////////////////////////////////////////////////////////////////// + inline void setVertices(const vector<Point>& vertices) + { + _vertices.clear(); + Point p; + for (typename vector<Point>::const_iterator it = vertices.begin(); it != vertices.end(); it++) { + p = *it; + _vertices.push_back(p); + } + computeBBox(); + } + + inline void setId(unsigned id) + { + _id = id; + } + + // + // Other methods + // + ///////////////////////////////////////////////////////////////////////////// + inline void computeBBox() + { + if (_vertices.empty()) + return; + + _max = _vertices[0]; + _min = _vertices[0]; + + for (typename vector<Point>::iterator it = _vertices.begin(); it != _vertices.end(); it++) { + for (unsigned int i = 0; i < Point::dim(); i++) { + if ((*it)[i] > _max[i]) + _max[i] = (*it)[i]; + if ((*it)[i] < _min[i]) + _min[i] = (*it)[i]; + } + } + } + + // FIXME Is it possible to get rid of userdatas ? + void* userdata; + void* userdata2; // Used during ray casting + +protected: + vector<Point> _vertices; + Point _min; + Point _max; + unsigned _id; +}; + + +// +// Polygon3r class +// +/////////////////////////////////////////////////////////////////////////////// +class Polygon3r : public Polygon<Vec3r> +{ +public: + inline Polygon3r() : Polygon<Vec3r>() {} + + inline Polygon3r(const vector<Vec3r>& vertices, const Vec3r& normal) : Polygon<Vec3r>(vertices) + { + setNormal(normal); + } + + inline Polygon3r(const Polygon3r& poly) : Polygon<Vec3r>(poly), _normal(poly._normal) {} + + virtual ~Polygon3r() {} + + void setNormal(const Vec3r& normal) + { + _normal = normal; + } + + inline Vec3r getNormal() const + { + return _normal; + } + + /*! Check whether the Polygon intersects with the ray or not */ + inline bool rayIntersect(const Vec3r& orig, const Vec3r& dir, real& t, real& u, real& v, + real epsilon = M_EPSILON) const + { +#if 0 + if (_vertices.size() < 3) + return false; +#endif + return GeomUtils::intersectRayTriangle(orig, dir, _vertices[0], _vertices[1], _vertices[2], t, u, v, epsilon); + } + +private: + Vec3r _normal; +}; + +} // end of namespace Geometry + +#endif // __POLYGON_H__ |