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path: root/source/blender/freestyle/intern/stroke/CurveIterators.h
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-rw-r--r--source/blender/freestyle/intern/stroke/CurveIterators.h511
1 files changed, 259 insertions, 252 deletions
diff --git a/source/blender/freestyle/intern/stroke/CurveIterators.h b/source/blender/freestyle/intern/stroke/CurveIterators.h
index 7b13abf9c0f..428ea022dfd 100644
--- a/source/blender/freestyle/intern/stroke/CurveIterators.h
+++ b/source/blender/freestyle/intern/stroke/CurveIterators.h
@@ -34,260 +34,267 @@ namespace CurveInternal {
* when the iterator is dereferenced.
*/
-class CurvePointIterator : public Interface0DIteratorNested
-{
-public:
- friend class Freestyle::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;
- }
+class CurvePointIterator : public Interface0DIteratorNested {
+ public:
+ friend class Freestyle::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
+} // end of namespace CurveInternal
} /* namespace Freestyle */
-#endif // __FREESTYLE_CURVE_ITERATORS_H__
+#endif // __FREESTYLE_CURVE_ITERATORS_H__
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 05:55:47 +0300