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Diffstat (limited to 'src/ftgl/FTVector.h')
-rw-r--r-- | src/ftgl/FTVector.h | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/src/ftgl/FTVector.h b/src/ftgl/FTVector.h new file mode 100644 index 0000000..ceac72a --- /dev/null +++ b/src/ftgl/FTVector.h @@ -0,0 +1,215 @@ +/* + * FTGL - OpenGL font library + * + * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz> + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef __FTVector__ +#define __FTVector__ + +#include "FTGL/ftgl.h" + +/** + * Provides a non-STL alternative to the STL vector + */ +template <typename FT_VECTOR_ITEM_TYPE> +class FTVector +{ + public: + typedef FT_VECTOR_ITEM_TYPE value_type; + typedef value_type& reference; + typedef const value_type& const_reference; + typedef value_type* iterator; + typedef const value_type* const_iterator; + typedef size_t size_type; + + FTVector() + { + Capacity = Size = 0; + Items = 0; + } + + + virtual ~FTVector() + { + clear(); + } + + FTVector& operator =(const FTVector& v) + { + reserve(v.capacity()); + + iterator ptr = begin(); + const_iterator vbegin = v.begin(); + const_iterator vend = v.end(); + + while(vbegin != vend) + { + *ptr++ = *vbegin++; + } + + Size = v.size(); + return *this; + } + + size_type size() const + { + return Size; + } + + size_type capacity() const + { + return Capacity; + } + + iterator begin() + { + return Items; + } + + const_iterator begin() const + { + return Items; + } + + iterator end() + { + return begin() + size(); + } + + const_iterator end() const + { + return begin() + size(); + } + + bool empty() const + { + return size() == 0; + } + + reference operator [](size_type pos) + { + return(*(begin() + pos)); + } + + const_reference operator [](size_type pos) const + { + return *(begin() + pos); + } + + void clear() + { + if(Capacity) + { + delete [] Items; + Capacity = Size = 0; + Items = 0; + } + } + + void reserve(size_type n) + { + if(capacity() < n) + { + expand(n); + } + } + + void push_back(const value_type& x) + { + if(size() == capacity()) + { + expand(); + } + + (*this)[size()] = x; + ++Size; + } + + void resize(size_type n, value_type x) + { + if(n == size()) + { + return; + } + + reserve(n); + iterator ibegin, iend; + + if(n >= Size) + { + ibegin = this->end(); + iend = this->begin() + n; + } + else + { + ibegin = this->begin() + n; + iend = this->end(); + } + + while(ibegin != iend) + { + *ibegin++ = x; + } + + Size = n; + } + + + private: + void expand(size_type capacity_hint = 0) + { + size_type new_capacity = (capacity() == 0) ? 256 : capacity() * 2; + if(capacity_hint) + { + while(new_capacity < capacity_hint) + { + new_capacity *= 2; + } + } + + value_type *new_items = new value_type[new_capacity]; + + iterator ibegin = this->begin(); + iterator iend = this->end(); + value_type *ptr = new_items; + + while(ibegin != iend) + { + *ptr++ = *ibegin++; + } + + if(Capacity) + { + delete [] Items; + } + + Items = new_items; + Capacity = new_capacity; + } + + size_type Capacity; + size_type Size; + value_type* Items; +}; + +#endif // __FTVector__ |