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Diffstat (limited to 'agg/inc/agg_bezier_arc.h')
| -rwxr-xr-x | agg/inc/agg_bezier_arc.h | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/agg/inc/agg_bezier_arc.h b/agg/inc/agg_bezier_arc.h deleted file mode 100755 index f437ab0a00bd..000000000000 --- a/agg/inc/agg_bezier_arc.h +++ /dev/null @@ -1,158 +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 -//---------------------------------------------------------------------------- -// -// Arc generator. Produces at most 4 consecutive cubic bezier curves, i.e., -// 4, 7, 10, or 13 vertices. -// -//---------------------------------------------------------------------------- - -#ifndef AGG_BEZIER_ARC_INCLUDED -#define AGG_BEZIER_ARC_INCLUDED - -#include "agg_conv_transform.h" - -namespace agg -{ - - //----------------------------------------------------------------------- - void arc_to_bezier(double cx, double cy, double rx, double ry, - double start_angle, double sweep_angle, - double* curve); - - - //==============================================================bezier_arc - // - // See implemantaion agg_bezier_arc.cpp - // - class bezier_arc - { - public: - //-------------------------------------------------------------------- - bezier_arc() : m_vertex(26) {} - bezier_arc(double x, double y, - double rx, double ry, - double start_angle, - double sweep_angle) - { - init(x, y, rx, ry, start_angle, sweep_angle); - } - - //-------------------------------------------------------------------- - void init(double x, double y, - double rx, double ry, - double start_angle, - double sweep_angle); - - //-------------------------------------------------------------------- - void rewind(unsigned) - { - m_vertex = 0; - } - - //-------------------------------------------------------------------- - unsigned vertex(double* x, double* y) - { - if(m_vertex >= m_num_vertices) return path_cmd_stop; - *x = m_vertices[m_vertex]; - *y = m_vertices[m_vertex + 1]; - m_vertex += 2; - return (m_vertex == 2) ? path_cmd_move_to : path_cmd_curve4; - } - - // Supplemantary functions. num_vertices() actually returns doubled - // number of vertices. That is, for 1 vertex it returns 2. - //-------------------------------------------------------------------- - unsigned num_vertices() const { return m_num_vertices; } - const double* vertices() const { return m_vertices; } - double* vertices() { return m_vertices; } - - private: - unsigned m_vertex; - unsigned m_num_vertices; - double m_vertices[26]; - }; - - - - //==========================================================bezier_arc_svg - // Compute an SVG-style bezier arc. - // - // Computes an elliptical arc from (x1, y1) to (x2, y2). The size and - // orientation of the ellipse are defined by two radii (rx, ry) - // and an x-axis-rotation, which indicates how the ellipse as a whole - // is rotated relative to the current coordinate system. The center - // (cx, cy) of the ellipse is calculated automatically to satisfy the - // constraints imposed by the other parameters. - // large-arc-flag and sweep-flag contribute to the automatic calculations - // and help determine how the arc is drawn. - class bezier_arc_svg - { - public: - //-------------------------------------------------------------------- - bezier_arc_svg() : m_arc(), m_radii_ok(false) {} - - bezier_arc_svg(double x1, double y1, - double rx, double ry, - double angle, - bool large_arc_flag, - bool sweep_flag, - double x2, double y2) : - m_arc(), m_radii_ok(false) - { - init(x1, y1, rx, ry, angle, large_arc_flag, sweep_flag, x2, y2); - } - - //-------------------------------------------------------------------- - void init(double x1, double y1, - double rx, double ry, - double angle, - bool large_arc_flag, - bool sweep_flag, - double x2, double y2); - - //-------------------------------------------------------------------- - bool radii_ok() const { return m_radii_ok; } - - //-------------------------------------------------------------------- - void rewind(unsigned) - { - m_arc.rewind(0); - } - - //-------------------------------------------------------------------- - unsigned vertex(double* x, double* y) - { - return m_arc.vertex(x, y); - } - - // Supplemantary functions. num_vertices() actually returns doubled - // number of vertices. That is, for 1 vertex it returns 2. - //-------------------------------------------------------------------- - unsigned num_vertices() const { return m_arc.num_vertices(); } - const double* vertices() const { return m_arc.vertices(); } - double* vertices() { return m_arc.vertices(); } - - private: - bezier_arc m_arc; - bool m_radii_ok; - }; - - - - -} - - -#endif |