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Diffstat (limited to 'agg/source/agg_trans_single_path.cpp')
| -rwxr-xr-x | agg/source/agg_trans_single_path.cpp | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/agg/source/agg_trans_single_path.cpp b/agg/source/agg_trans_single_path.cpp deleted file mode 100755 index cc4fb5356267..000000000000 --- a/agg/source/agg_trans_single_path.cpp +++ /dev/null @@ -1,202 +0,0 @@ -//---------------------------------------------------------------------------- -// Anti-Grain Geometry - Version 2.3 -// 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 -//---------------------------------------------------------------------------- - -#include "agg_math.h" -#include "agg_vertex_sequence.h" -#include "agg_trans_single_path.h" - -namespace agg -{ - - //------------------------------------------------------------------------ - trans_single_path::trans_single_path() : - m_base_length(0.0), - m_kindex(0.0), - m_status(initial), - m_preserve_x_scale(true) - { - } - - //------------------------------------------------------------------------ - void trans_single_path::reset() - { - m_src_vertices.remove_all(); - m_kindex = 0.0; - m_status = initial; - } - - //------------------------------------------------------------------------ - void trans_single_path::move_to(double x, double y) - { - if(m_status == initial) - { - m_src_vertices.modify_last(vertex_dist(x, y)); - m_status = making_path; - } - else - { - line_to(x, y); - } - } - - //------------------------------------------------------------------------ - void trans_single_path::line_to(double x, double y) - { - if(m_status == making_path) - { - m_src_vertices.add(vertex_dist(x, y)); - } - } - - - //------------------------------------------------------------------------ - void trans_single_path::finalize_path() - { - if(m_status == making_path && m_src_vertices.size() > 1) - { - unsigned i; - double dist; - double d; - - if(m_src_vertices.size() > 2) - { - if(m_src_vertices[m_src_vertices.size() - 2].dist * 10.0 < - m_src_vertices[m_src_vertices.size() - 3].dist) - { - d = m_src_vertices[m_src_vertices.size() - 3].dist + - m_src_vertices[m_src_vertices.size() - 2].dist; - - m_src_vertices[m_src_vertices.size() - 2] = - m_src_vertices[m_src_vertices.size() - 1]; - - m_src_vertices.remove_last(); - m_src_vertices[m_src_vertices.size() - 2].dist = d; - } - } - - dist = 0.0; - m_src_vertices.close(false); - for(i = 0; i < m_src_vertices.size(); i++) - { - vertex_dist& v = m_src_vertices[i]; - double _d = v.dist; - v.dist = dist; - dist += _d; - } - m_kindex = (m_src_vertices.size() - 1) / dist; - m_status = ready; - } - } - - - - //------------------------------------------------------------------------ - double trans_single_path::total_length() const - { - if(m_base_length >= 1e-10) return m_base_length; - return (m_status == ready) ? - m_src_vertices[m_src_vertices.size() - 1].dist : - 0.0; - } - - - //------------------------------------------------------------------------ - void trans_single_path::transform(double *x, double *y) const - { - if(m_status == ready) - { - if(m_base_length > 1e-10) - { - *x *= m_src_vertices[m_src_vertices.size() - 1].dist / - m_base_length; - } - - double x1 = 0.0; - double y1 = 0.0; - double dx = 1.0; - double dy = 1.0; - double d = 0.0; - double dd = 1.0; - if(*x < 0.0) - { - // Extrapolation on the left - //-------------------------- - x1 = m_src_vertices[0].x; - y1 = m_src_vertices[0].y; - dx = m_src_vertices[1].x - x1; - dy = m_src_vertices[1].y - y1; - dd = m_src_vertices[1].dist - m_src_vertices[0].dist; - d = *x; - } - else - if(*x > m_src_vertices[m_src_vertices.size() - 1].dist) - { - // Extrapolation on the right - //-------------------------- - unsigned i = m_src_vertices.size() - 2; - unsigned j = m_src_vertices.size() - 1; - x1 = m_src_vertices[j].x; - y1 = m_src_vertices[j].y; - dx = x1 - m_src_vertices[i].x; - dy = y1 - m_src_vertices[i].y; - dd = m_src_vertices[j].dist - m_src_vertices[i].dist; - d = *x - m_src_vertices[j].dist; - } - else - { - // Interpolation - //-------------------------- - unsigned i = 0; - unsigned j = m_src_vertices.size() - 1; - if(m_preserve_x_scale) - { - unsigned k; - for(i = 0; (j - i) > 1; ) - { - if(*x < m_src_vertices[k = (i + j) >> 1].dist) - { - j = k; - } - else - { - i = k; - } - } - d = m_src_vertices[i].dist; - dd = m_src_vertices[j].dist - d; - d = *x - d; - } - else - { - i = (unsigned)floor(*x * m_kindex); - j = i + 1; - dd = m_src_vertices[j].dist - m_src_vertices[i].dist; - d = ((*x * m_kindex) - i) * dd; - } - x1 = m_src_vertices[i].x; - y1 = m_src_vertices[i].y; - dx = m_src_vertices[j].x - x1; - dy = m_src_vertices[j].y - y1; - } - double x2 = x1 + dx * d / dd; - double y2 = y1 + dy * d / dd; - *x = x2 - *y * dy / dd; - *y = y2 + *y * dx / dd; - } - } - - -} - |