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Diffstat (limited to 'source/blender/freestyle/intern/stroke/CurveIterators.h')
| -rw-r--r-- | source/blender/freestyle/intern/stroke/CurveIterators.h | 591 |
1 files changed, 297 insertions, 294 deletions
diff --git a/source/blender/freestyle/intern/stroke/CurveIterators.h b/source/blender/freestyle/intern/stroke/CurveIterators.h index a45ef4bfdaf..7d9e0e00ef1 100644 --- a/source/blender/freestyle/intern/stroke/CurveIterators.h +++ b/source/blender/freestyle/intern/stroke/CurveIterators.h @@ -1,299 +1,302 @@ -// -// Filename : CurveIterators.h -// Author(s) : Stephane Grabli -// Purpose : Iterators used to iterate over the elements of the Curve -// Date of creation : 01/08/2003 -// -/////////////////////////////////////////////////////////////////////////////// - - -// -// 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 CURVEITERATORS_H -# define CURVEITERATORS_H +/* + * ***** 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 __FREESTYLE_CURVE_ITERATORS_H__ +#define __FREESTYLE_CURVE_ITERATORS_H__ + +/** \file blender/freestyle/intern/stroke/CurveIterators.h + * \ingroup freestyle + * \brief Iterators used to iterate over the elements of the Curve + * \author Stephane Grabli + * \date 01/08/2003 + */ -#include "Stroke.h" #include "Curve.h" +#include "Stroke.h" namespace CurveInternal { - /*! iterator on a curve. Allows an iterating outside - * initial vertices. A CurvePoint is instanciated an returned - * when the iterator is dereferenced. - */ - - class CurvePointIterator : public Interface0DIteratorNested - { - public: - friend class ::Curve; - public: - float _CurvilinearLength; - float _step; - ::Curve::vertex_container::iterator __A; - ::Curve::vertex_container::iterator __B; - ::Curve::vertex_container::iterator _begin; - ::Curve::vertex_container::iterator _end; - int _n; - int _currentn; - float _t; - mutable CurvePoint _Point; - float _CurveLength; - - public: - - public: - inline CurvePointIterator(float step = 0.f) - : Interface0DIteratorNested() - { - _step = step; - _CurvilinearLength = 0.f; - _t = 0.f; - //_Point = 0; - _n = 0; - _currentn = 0; - _CurveLength=0; - } - - inline CurvePointIterator(const CurvePointIterator& iBrother) - : Interface0DIteratorNested() - { - __A = iBrother.__A; - __B = iBrother.__B; - _begin = iBrother._begin; - _end = iBrother._end; - _CurvilinearLength = iBrother._CurvilinearLength; - _step = iBrother._step; - _t = iBrother._t; - _Point = iBrother._Point; - _n = iBrother._n; - _currentn = iBrother._currentn; - _CurveLength = iBrother._CurveLength; - } - inline CurvePointIterator& operator=(const CurvePointIterator& iBrother) - { - __A = iBrother.__A; - __B = iBrother.__B; - _begin = iBrother._begin; - _end = iBrother._end; - _CurvilinearLength = iBrother._CurvilinearLength; - _step = iBrother._step; - _t = iBrother._t; - _Point = iBrother._Point; - _n = iBrother._n; - _currentn = iBrother._currentn; - _CurveLength = iBrother._CurveLength; - return *this; - } - virtual ~CurvePointIterator() - { - } - protected: - inline CurvePointIterator(::Curve::vertex_container::iterator iA, - ::Curve::vertex_container::iterator iB, - ::Curve::vertex_container::iterator ibegin, - ::Curve::vertex_container::iterator iend, - int currentn, - int n, - float iCurveLength, - float step, float t=0.f, float iCurvilinearLength = 0.f) - : Interface0DIteratorNested() - { - __A = iA; - __B = iB; - _begin = ibegin; - _end = iend; - _CurvilinearLength = iCurvilinearLength; - _step = step; - _t = t; - _n = n; - _currentn = currentn; - _CurveLength = iCurveLength; - } - - public: - - virtual CurvePointIterator* copy() const { - return new CurvePointIterator(*this); - } - - inline Interface0DIterator castToInterface0DIterator() const{ - Interface0DIterator ret(new CurveInternal::CurvePointIterator(*this)); - return ret; - } - virtual string getExactTypeName() const { - return "CurvePointIterator"; - } - - // operators - inline CurvePointIterator& operator++() // operator corresponding to ++i - { - increment(); - return *this; - } - - inline CurvePointIterator& operator--() // operator corresponding to ++i - { - decrement(); - return *this; - } - - // comparibility - virtual bool operator==(const Interface0DIteratorNested& b) const - { - const CurvePointIterator* it_exact = dynamic_cast<const CurvePointIterator*>(&b); - if (!it_exact) - return false; - return ((__A==it_exact->__A) && (__B==it_exact->__B) && (_t == it_exact->_t)); - } - - // dereferencing - virtual CurvePoint& operator*() - { - return (_Point = CurvePoint(*__A,*__B,_t)); - } - virtual CurvePoint* operator->() { return &(operator*());} - public: - virtual bool isBegin() const - { - if((__A == _begin) && (_t < (float)M_EPSILON)) - return true; - return false; - } - virtual bool isEnd() const - { - if(__B == _end) - return true; - return false; - } - -// protected: - - virtual int increment() - { - if((_currentn == _n-1) && (_t == 1.f)) - { - // we're setting the iterator to end - ++__A; - ++__B; - ++_currentn; - _t = 0.f; - return 0; - } - - if(0 == _step) // means we iterate over initial vertices - { - Vec3r vec_tmp((*__B)->point2d() - (*__A)->point2d()); - _CurvilinearLength += (float)vec_tmp.norm(); - if(_currentn == _n-1) - { - _t = 1.f; - return 0; - } - ++__B; - ++__A; - ++_currentn; - return 0; - } - - // compute the new position: - Vec3r vec_tmp2((*__A)->point2d() - (*__B)->point2d()); - float normAB = (float)vec_tmp2.norm(); - - if(normAB > M_EPSILON) - { - _CurvilinearLength += _step; - _t = _t + _step/normAB; - } - else - _t = 1.f; // AB is a null segment, we're directly at its end - //if normAB ~= 0, we don't change these values - if(_t >= 1) - { - _CurvilinearLength -= normAB*(_t-1); - if(_currentn == _n-1) - _t=1.f; - else - { - _t = 0.f; - ++_currentn; - ++__A;++__B; - } - } - return 0; - } - virtual int decrement() - { - if(_t == 0.f) //we're at the beginning of the edge - { - _t = 1.f; - --_currentn; - --__A; --__B; - if(_currentn == _n-1) - return 0; - } - - if(0 == _step) // means we iterate over initial vertices - { - Vec3r vec_tmp((*__B)->point2d() - (*__A)->point2d()); - _CurvilinearLength -= (float)vec_tmp.norm(); - _t = 0; - return 0; - } - - // compute the new position: - Vec3r vec_tmp2((*__A)->point2d() - (*__B)->point2d()); - float normAB = (float)vec_tmp2.norm(); - - if(normAB >M_EPSILON) - { - _CurvilinearLength -= _step; - _t = _t - _step/normAB; - } - else - _t = -1.f; // We just need a negative value here - - // round value - if(fabs(_t) < (float)M_EPSILON) - _t = 0.0; - if(_t < 0) - { - if(_currentn == 0) - _CurvilinearLength = 0.f; - else - _CurvilinearLength += normAB*(-_t); - _t = 0.f; - } - return 0; - } - - virtual float t() const{ - return _CurvilinearLength; - } - virtual float u() const{ - return _CurvilinearLength/_CurveLength; - } - }; - - - -} // end of namespace StrokeInternal - -#endif // CURVEITERATORS_H +/*! iterator on a curve. Allows an iterating outside +* initial vertices. A CurvePoint is instanciated an returned +* when the iterator is dereferenced. +*/ + +class CurvePointIterator : public Interface0DIteratorNested +{ +public: + friend class ::Curve; + +public: + float _CurvilinearLength; + float _step; + ::Curve::vertex_container::iterator __A; + ::Curve::vertex_container::iterator __B; + ::Curve::vertex_container::iterator _begin; + ::Curve::vertex_container::iterator _end; + int _n; + int _currentn; + float _t; + mutable CurvePoint _Point; + float _CurveLength; + +public: + inline CurvePointIterator(float step = 0.0f) : Interface0DIteratorNested() + { + _step = step; + _CurvilinearLength = 0.0f; + _t = 0.0f; + //_Point = 0; + _n = 0; + _currentn = 0; + _CurveLength = 0; + } + + inline CurvePointIterator(const CurvePointIterator& iBrother) : Interface0DIteratorNested() + { + __A = iBrother.__A; + __B = iBrother.__B; + _begin = iBrother._begin; + _end = iBrother._end; + _CurvilinearLength = iBrother._CurvilinearLength; + _step = iBrother._step; + _t = iBrother._t; + _Point = iBrother._Point; + _n = iBrother._n; + _currentn = iBrother._currentn; + _CurveLength = iBrother._CurveLength; + } + + inline CurvePointIterator& operator=(const CurvePointIterator& iBrother) + { + __A = iBrother.__A; + __B = iBrother.__B; + _begin = iBrother._begin; + _end = iBrother._end; + _CurvilinearLength = iBrother._CurvilinearLength; + _step = iBrother._step; + _t = iBrother._t; + _Point = iBrother._Point; + _n = iBrother._n; + _currentn = iBrother._currentn; + _CurveLength = iBrother._CurveLength; + return *this; + } + + virtual ~CurvePointIterator() {} + +protected: + inline CurvePointIterator(::Curve::vertex_container::iterator iA, ::Curve::vertex_container::iterator iB, + ::Curve::vertex_container::iterator ibegin, ::Curve::vertex_container::iterator iend, + int currentn, int n, float iCurveLength, float step, float t = 0.0f, + float iCurvilinearLength = 0.0f) + : Interface0DIteratorNested() + { + __A = iA; + __B = iB; + _begin = ibegin; + _end = iend; + _CurvilinearLength = iCurvilinearLength; + _step = step; + _t = t; + _n = n; + _currentn = currentn; + _CurveLength = iCurveLength; + } + +public: + virtual CurvePointIterator* copy() const + { + return new CurvePointIterator(*this); + } + + inline Interface0DIterator castToInterface0DIterator() const + { + Interface0DIterator ret(new CurveInternal::CurvePointIterator(*this)); + return ret; + } + + virtual string getExactTypeName() const + { + return "CurvePointIterator"; + } + + // operators + inline CurvePointIterator& operator++() // operator corresponding to ++i + { + increment(); + return *this; + } + + inline CurvePointIterator& operator--() // operator corresponding to --i + { + decrement(); + return *this; + } + + // comparibility + virtual bool operator==(const Interface0DIteratorNested& b) const + { + const CurvePointIterator* it_exact = dynamic_cast<const CurvePointIterator*>(&b); + if (!it_exact) + return false; + return ((__A == it_exact->__A) && (__B == it_exact->__B) && (_t == it_exact->_t)); + } + + // dereferencing + virtual CurvePoint& operator*() + { + return (_Point = CurvePoint(*__A, *__B, _t)); + } + + virtual CurvePoint* operator->() + { + return &(operator*()); + } + + virtual bool isBegin() const + { + if ((__A == _begin) && (_t < (float)M_EPSILON)) + return true; + return false; + } + + virtual bool isEnd() const + { + if (__B == _end) + return true; + return false; + } + +//protected: + virtual int increment() + { + if ((_currentn == _n - 1) && (_t == 1.0f)) { + // we're setting the iterator to end + ++__A; + ++__B; + ++_currentn; + _t = 0.0f; + return 0; + } + + if (0 == _step) { // means we iterate over initial vertices + Vec3r vec_tmp((*__B)->point2d() - (*__A)->point2d()); + _CurvilinearLength += (float)vec_tmp.norm(); + if (_currentn == _n - 1) { + _t = 1.0f; + return 0; + } + ++__B; + ++__A; + ++_currentn; + return 0; + } + + // compute the new position: + Vec3r vec_tmp2((*__A)->point2d() - (*__B)->point2d()); + float normAB = (float)vec_tmp2.norm(); + + if (normAB > M_EPSILON) { + _CurvilinearLength += _step; + _t = _t + _step / normAB; + } + else { + _t = 1.0f; // AB is a null segment, we're directly at its end + } + //if normAB ~= 0, we don't change these values + if (_t >= 1) { + _CurvilinearLength -= normAB * (_t - 1); + if (_currentn == _n - 1) { + _t = 1.0f; + } + else { + _t = 0.0f; + ++_currentn; + ++__A; + ++__B; + } + } + return 0; + } + + virtual int decrement() + { + if (_t == 0.0f) { //we're at the beginning of the edge + _t = 1.0f; + --_currentn; + --__A; + --__B; + if (_currentn == _n - 1) + return 0; + } + + if (0 == _step) { // means we iterate over initial vertices + Vec3r vec_tmp((*__B)->point2d() - (*__A)->point2d()); + _CurvilinearLength -= (float)vec_tmp.norm(); + _t = 0; + return 0; + } + + // compute the new position: + Vec3r vec_tmp2((*__A)->point2d() - (*__B)->point2d()); + float normAB = (float)vec_tmp2.norm(); + + if (normAB > M_EPSILON) { + _CurvilinearLength -= _step; + _t = _t - _step / normAB; + } + else { + _t = -1.0f; // We just need a negative value here + } + + // round value + if (fabs(_t) < (float)M_EPSILON) + _t = 0.0f; + if (_t < 0) { + if (_currentn == 0) + _CurvilinearLength = 0.0f; + else + _CurvilinearLength += normAB * (-_t); + _t = 0.0f; + } + return 0; + } + + virtual float t() const + { + return _CurvilinearLength; + } + + virtual float u() const + { + return _CurvilinearLength / _CurveLength; + } +}; + +} // end of namespace CurveInternal + +#endif // __FREESTYLE_CURVE_ITERATORS_H__ |