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Diffstat (limited to 'agg/inc/agg_ellipse_bresenham.h')
-rwxr-xr-x | agg/inc/agg_ellipse_bresenham.h | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/agg/inc/agg_ellipse_bresenham.h b/agg/inc/agg_ellipse_bresenham.h deleted file mode 100755 index 41133a473d9e..000000000000 --- a/agg/inc/agg_ellipse_bresenham.h +++ /dev/null @@ -1,113 +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 -//---------------------------------------------------------------------------- -// -// Simple Bresenham interpolator for ellipsees -// -//---------------------------------------------------------------------------- - -#ifndef AGG_ELLIPSE_BRESENHAM_INCLUDED -#define AGG_ELLIPSE_BRESENHAM_INCLUDED - - -#include "agg_basics.h" - - -namespace agg -{ - - //------------------------------------------ellipse_bresenham_interpolator - class ellipse_bresenham_interpolator - { - public: - ellipse_bresenham_interpolator(int rx, int ry) : - m_rx2(rx * rx), - m_ry2(ry * ry), - m_two_rx2(m_rx2 << 1), - m_two_ry2(m_ry2 << 1), - m_dx(0), - m_dy(0), - m_inc_x(0), - m_inc_y(-ry * m_two_rx2), - m_cur_f(0) - {} - - int dx() const { return m_dx; } - int dy() const { return m_dy; } - - void operator++ () - { - int mx, my, mxy, min_m; - int fx, fy, fxy; - - mx = fx = m_cur_f + m_inc_x + m_ry2; - if(mx < 0) mx = -mx; - - my = fy = m_cur_f + m_inc_y + m_rx2; - if(my < 0) my = -my; - - mxy = fxy = m_cur_f + m_inc_x + m_ry2 + m_inc_y + m_rx2; - if(mxy < 0) mxy = -mxy; - - min_m = mx; - bool flag = true; - - if(min_m > my) - { - min_m = my; - flag = false; - } - - m_dx = m_dy = 0; - - if(min_m > mxy) - { - m_inc_x += m_two_ry2; - m_inc_y += m_two_rx2; - m_cur_f = fxy; - m_dx = 1; - m_dy = 1; - return; - } - - if(flag) - { - m_inc_x += m_two_ry2; - m_cur_f = fx; - m_dx = 1; - return; - } - - m_inc_y += m_two_rx2; - m_cur_f = fy; - m_dy = 1; - } - - private: - int m_rx2; - int m_ry2; - int m_two_rx2; - int m_two_ry2; - int m_dx; - int m_dy; - int m_inc_x; - int m_inc_y; - int m_cur_f; - - }; - -} - -#endif - |