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author | shumkovnd <shumkovnd@yandex-team.com> | 2023-11-10 14:39:34 +0300 |
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committer | shumkovnd <shumkovnd@yandex-team.com> | 2023-11-10 16:42:24 +0300 |
commit | 77eb2d3fdcec5c978c64e025ced2764c57c00285 (patch) | |
tree | c51edb0748ca8d4a08d7c7323312c27ba1a8b79a /contrib/python/matplotlib/py2/extern/agg24-svn/include/agg_dda_line.h | |
parent | dd6d20cadb65582270ac23f4b3b14ae189704b9d (diff) | |
download | ydb-77eb2d3fdcec5c978c64e025ced2764c57c00285.tar.gz |
KIKIMR-19287: add task_stats_drawing script
Diffstat (limited to 'contrib/python/matplotlib/py2/extern/agg24-svn/include/agg_dda_line.h')
-rw-r--r-- | contrib/python/matplotlib/py2/extern/agg24-svn/include/agg_dda_line.h | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/contrib/python/matplotlib/py2/extern/agg24-svn/include/agg_dda_line.h b/contrib/python/matplotlib/py2/extern/agg24-svn/include/agg_dda_line.h new file mode 100644 index 0000000000..f589e76b83 --- /dev/null +++ b/contrib/python/matplotlib/py2/extern/agg24-svn/include/agg_dda_line.h @@ -0,0 +1,290 @@ +//---------------------------------------------------------------------------- +// 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 +//---------------------------------------------------------------------------- +// +// classes dda_line_interpolator, dda2_line_interpolator +// +//---------------------------------------------------------------------------- + +#ifndef AGG_DDA_LINE_INCLUDED +#define AGG_DDA_LINE_INCLUDED + +#include <stdlib.h> +#include "agg_basics.h" + +namespace agg +{ + + //===================================================dda_line_interpolator + template<int FractionShift, int YShift=0> class dda_line_interpolator + { + public: + //-------------------------------------------------------------------- + dda_line_interpolator() {} + + //-------------------------------------------------------------------- + dda_line_interpolator(int y1, int y2, unsigned count) : + m_y(y1), + m_inc(((y2 - y1) << FractionShift) / int(count)), + m_dy(0) + { + } + + //-------------------------------------------------------------------- + void operator ++ () + { + m_dy += m_inc; + } + + //-------------------------------------------------------------------- + void operator -- () + { + m_dy -= m_inc; + } + + //-------------------------------------------------------------------- + void operator += (unsigned n) + { + m_dy += m_inc * n; + } + + //-------------------------------------------------------------------- + void operator -= (unsigned n) + { + m_dy -= m_inc * n; + } + + + //-------------------------------------------------------------------- + int y() const { return m_y + (m_dy >> (FractionShift-YShift)); } + int dy() const { return m_dy; } + + + private: + int m_y; + int m_inc; + int m_dy; + }; + + + + + + //=================================================dda2_line_interpolator + class dda2_line_interpolator + { + public: + typedef int save_data_type; + enum save_size_e { save_size = 2 }; + + //-------------------------------------------------------------------- + dda2_line_interpolator() {} + + //-------------------------------------------- Forward-adjusted line + dda2_line_interpolator(int y1, int y2, int count) : + m_cnt(count <= 0 ? 1 : count), + m_lft((y2 - y1) / m_cnt), + m_rem((y2 - y1) % m_cnt), + m_mod(m_rem), + m_y(y1) + { + if(m_mod <= 0) + { + m_mod += count; + m_rem += count; + m_lft--; + } + m_mod -= count; + } + + //-------------------------------------------- Backward-adjusted line + dda2_line_interpolator(int y1, int y2, int count, int) : + m_cnt(count <= 0 ? 1 : count), + m_lft((y2 - y1) / m_cnt), + m_rem((y2 - y1) % m_cnt), + m_mod(m_rem), + m_y(y1) + { + if(m_mod <= 0) + { + m_mod += count; + m_rem += count; + m_lft--; + } + } + + //-------------------------------------------- Backward-adjusted line + dda2_line_interpolator(int y, int count) : + m_cnt(count <= 0 ? 1 : count), + m_lft(y / m_cnt), + m_rem(y % m_cnt), + m_mod(m_rem), + m_y(0) + { + if(m_mod <= 0) + { + m_mod += count; + m_rem += count; + m_lft--; + } + } + + + //-------------------------------------------------------------------- + void save(save_data_type* data) const + { + data[0] = m_mod; + data[1] = m_y; + } + + //-------------------------------------------------------------------- + void load(const save_data_type* data) + { + m_mod = data[0]; + m_y = data[1]; + } + + //-------------------------------------------------------------------- + void operator++() + { + m_mod += m_rem; + m_y += m_lft; + if(m_mod > 0) + { + m_mod -= m_cnt; + m_y++; + } + } + + //-------------------------------------------------------------------- + void operator--() + { + if(m_mod <= m_rem) + { + m_mod += m_cnt; + m_y--; + } + m_mod -= m_rem; + m_y -= m_lft; + } + + //-------------------------------------------------------------------- + void adjust_forward() + { + m_mod -= m_cnt; + } + + //-------------------------------------------------------------------- + void adjust_backward() + { + m_mod += m_cnt; + } + + //-------------------------------------------------------------------- + int mod() const { return m_mod; } + int rem() const { return m_rem; } + int lft() const { return m_lft; } + + //-------------------------------------------------------------------- + int y() const { return m_y; } + + private: + int m_cnt; + int m_lft; + int m_rem; + int m_mod; + int m_y; + }; + + + + + + + + //---------------------------------------------line_bresenham_interpolator + class line_bresenham_interpolator + { + public: + enum subpixel_scale_e + { + subpixel_shift = 8, + subpixel_scale = 1 << subpixel_shift, + subpixel_mask = subpixel_scale - 1 + }; + + //-------------------------------------------------------------------- + static int line_lr(int v) { return v >> subpixel_shift; } + + //-------------------------------------------------------------------- + line_bresenham_interpolator(int x1, int y1, int x2, int y2) : + m_x1_lr(line_lr(x1)), + m_y1_lr(line_lr(y1)), + m_x2_lr(line_lr(x2)), + m_y2_lr(line_lr(y2)), + m_ver(abs(m_x2_lr - m_x1_lr) < abs(m_y2_lr - m_y1_lr)), + m_len(m_ver ? abs(m_y2_lr - m_y1_lr) : + abs(m_x2_lr - m_x1_lr)), + m_inc(m_ver ? ((y2 > y1) ? 1 : -1) : ((x2 > x1) ? 1 : -1)), + m_interpolator(m_ver ? x1 : y1, + m_ver ? x2 : y2, + m_len) + { + } + + //-------------------------------------------------------------------- + bool is_ver() const { return m_ver; } + unsigned len() const { return m_len; } + int inc() const { return m_inc; } + + //-------------------------------------------------------------------- + void hstep() + { + ++m_interpolator; + m_x1_lr += m_inc; + } + + //-------------------------------------------------------------------- + void vstep() + { + ++m_interpolator; + m_y1_lr += m_inc; + } + + //-------------------------------------------------------------------- + int x1() const { return m_x1_lr; } + int y1() const { return m_y1_lr; } + int x2() const { return line_lr(m_interpolator.y()); } + int y2() const { return line_lr(m_interpolator.y()); } + int x2_hr() const { return m_interpolator.y(); } + int y2_hr() const { return m_interpolator.y(); } + + private: + int m_x1_lr; + int m_y1_lr; + int m_x2_lr; + int m_y2_lr; + bool m_ver; + unsigned m_len; + int m_inc; + dda2_line_interpolator m_interpolator; + + }; + + +} + + + +#endif |