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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/src/agg_trans_affine.cpp | |
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/src/agg_trans_affine.cpp')
-rw-r--r-- | contrib/python/matplotlib/py2/extern/agg24-svn/src/agg_trans_affine.cpp | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/contrib/python/matplotlib/py2/extern/agg24-svn/src/agg_trans_affine.cpp b/contrib/python/matplotlib/py2/extern/agg24-svn/src/agg_trans_affine.cpp new file mode 100644 index 0000000000..99febc953a --- /dev/null +++ b/contrib/python/matplotlib/py2/extern/agg24-svn/src/agg_trans_affine.cpp @@ -0,0 +1,194 @@ +//---------------------------------------------------------------------------- +// 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 +//---------------------------------------------------------------------------- +// +// Affine transformations +// +//---------------------------------------------------------------------------- +#include "agg_trans_affine.h" + + + +namespace agg +{ + + //------------------------------------------------------------------------ + const trans_affine& trans_affine::parl_to_parl(const double* src, + const double* dst) + { + sx = src[2] - src[0]; + shy = src[3] - src[1]; + shx = src[4] - src[0]; + sy = src[5] - src[1]; + tx = src[0]; + ty = src[1]; + invert(); + multiply(trans_affine(dst[2] - dst[0], dst[3] - dst[1], + dst[4] - dst[0], dst[5] - dst[1], + dst[0], dst[1])); + return *this; + } + + //------------------------------------------------------------------------ + const trans_affine& trans_affine::rect_to_parl(double x1, double y1, + double x2, double y2, + const double* parl) + { + double src[6]; + src[0] = x1; src[1] = y1; + src[2] = x2; src[3] = y1; + src[4] = x2; src[5] = y2; + parl_to_parl(src, parl); + return *this; + } + + //------------------------------------------------------------------------ + const trans_affine& trans_affine::parl_to_rect(const double* parl, + double x1, double y1, + double x2, double y2) + { + double dst[6]; + dst[0] = x1; dst[1] = y1; + dst[2] = x2; dst[3] = y1; + dst[4] = x2; dst[5] = y2; + parl_to_parl(parl, dst); + return *this; + } + + //------------------------------------------------------------------------ + const trans_affine& trans_affine::multiply(const trans_affine& m) + { + double t0 = sx * m.sx + shy * m.shx; + double t2 = shx * m.sx + sy * m.shx; + double t4 = tx * m.sx + ty * m.shx + m.tx; + shy = sx * m.shy + shy * m.sy; + sy = shx * m.shy + sy * m.sy; + ty = tx * m.shy + ty * m.sy + m.ty; + sx = t0; + shx = t2; + tx = t4; + return *this; + } + + + //------------------------------------------------------------------------ + const trans_affine& trans_affine::invert() + { + double d = determinant_reciprocal(); + + double t0 = sy * d; + sy = sx * d; + shy = -shy * d; + shx = -shx * d; + + double t4 = -tx * t0 - ty * shx; + ty = -tx * shy - ty * sy; + + sx = t0; + tx = t4; + return *this; + } + + + //------------------------------------------------------------------------ + const trans_affine& trans_affine::flip_x() + { + sx = -sx; + shy = -shy; + tx = -tx; + return *this; + } + + //------------------------------------------------------------------------ + const trans_affine& trans_affine::flip_y() + { + shx = -shx; + sy = -sy; + ty = -ty; + return *this; + } + + //------------------------------------------------------------------------ + const trans_affine& trans_affine::reset() + { + sx = sy = 1.0; + shy = shx = tx = ty = 0.0; + return *this; + } + + //------------------------------------------------------------------------ + bool trans_affine::is_identity(double epsilon) const + { + return is_equal_eps(sx, 1.0, epsilon) && + is_equal_eps(shy, 0.0, epsilon) && + is_equal_eps(shx, 0.0, epsilon) && + is_equal_eps(sy, 1.0, epsilon) && + is_equal_eps(tx, 0.0, epsilon) && + is_equal_eps(ty, 0.0, epsilon); + } + + //------------------------------------------------------------------------ + bool trans_affine::is_valid(double epsilon) const + { + return fabs(sx) > epsilon && fabs(sy) > epsilon; + } + + //------------------------------------------------------------------------ + bool trans_affine::is_equal(const trans_affine& m, double epsilon) const + { + return is_equal_eps(sx, m.sx, epsilon) && + is_equal_eps(shy, m.shy, epsilon) && + is_equal_eps(shx, m.shx, epsilon) && + is_equal_eps(sy, m.sy, epsilon) && + is_equal_eps(tx, m.tx, epsilon) && + is_equal_eps(ty, m.ty, epsilon); + } + + //------------------------------------------------------------------------ + double trans_affine::rotation() const + { + double x1 = 0.0; + double y1 = 0.0; + double x2 = 1.0; + double y2 = 0.0; + transform(&x1, &y1); + transform(&x2, &y2); + return atan2(y2-y1, x2-x1); + } + + //------------------------------------------------------------------------ + void trans_affine::translation(double* dx, double* dy) const + { + *dx = tx; + *dy = ty; + } + + //------------------------------------------------------------------------ + void trans_affine::scaling(double* x, double* y) const + { + double x1 = 0.0; + double y1 = 0.0; + double x2 = 1.0; + double y2 = 1.0; + trans_affine t(*this); + t *= trans_affine_rotation(-rotation()); + t.transform(&x1, &y1); + t.transform(&x2, &y2); + *x = x2 - x1; + *y = y2 - y1; + } + + +} + |