//---------------------------------------------------------------------------- // Anti-Grain Geometry - Version 2.4 // Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com) // // Permission to copy, use, modify, sell and distribute this software // is granted provided this copyright notice appears in all copies. // This software is provided "as is" without express or implied // warranty, and with no claim as to its suitability for any purpose. // //---------------------------------------------------------------------------- // Contact: mcseem@antigrain.com // mcseemagg@yahoo.com // http://www.antigrain.com //---------------------------------------------------------------------------- #ifndef AGG_SPAN_ALLOCATOR_INCLUDED #define AGG_SPAN_ALLOCATOR_INCLUDED #include "agg_array.h" namespace agg { //----------------------------------------------------------span_allocator template<class ColorT> class span_allocator { public: typedef ColorT color_type; //-------------------------------------------------------------------- AGG_INLINE color_type* allocate(unsigned span_len) { if(span_len > m_span.size()) { // To reduce the number of reallocs we align the // span_len to 256 color elements. // Well, I just like this number and it looks reasonable. //----------------------- m_span.resize(((span_len + 255) >> 8) << 8); } return &m_span[0]; } AGG_INLINE color_type* span() { return &m_span[0]; } AGG_INLINE unsigned max_span_len() const { return m_span.size(); } private: pod_array<color_type> m_span; }; } #endif