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Diffstat (limited to 'agg/inc/agg_span_gouraud_gray.h')
| -rwxr-xr-x | agg/inc/agg_span_gouraud_gray.h | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/agg/inc/agg_span_gouraud_gray.h b/agg/inc/agg_span_gouraud_gray.h deleted file mode 100755 index caf288919e93..000000000000 --- a/agg/inc/agg_span_gouraud_gray.h +++ /dev/null @@ -1,185 +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 -//---------------------------------------------------------------------------- -// -// Adaptation for high precision colors has been sponsored by -// Liberty Technology Systems, Inc., visit http://lib-sys.com -// -// Liberty Technology Systems, Inc. is the provider of -// PostScript and PDF technology for software developers. -// -//---------------------------------------------------------------------------- - -#ifndef AGG_SPAN_GOURAUD_GRAY_INCLUDED -#define AGG_SPAN_GOURAUD_GRAY_INCLUDED - -#include "agg_basics.h" -#include "agg_color_gray.h" -#include "agg_dda_line.h" -#include "agg_span_gouraud.h" - -namespace agg -{ - - //=======================================================span_gouraud_gray - template<class ColorT, class Allocator = span_allocator<ColorT> > - class span_gouraud_gray : public span_gouraud<ColorT, Allocator> - { - public: - typedef Allocator alloc_type; - typedef ColorT color_type; - typedef typename color_type::value_type value_type; - typedef span_gouraud<color_type, alloc_type> base_type; - typedef typename base_type::coord_type coord_type; - - private: - //-------------------------------------------------------------------- - struct gray_calc - { - void init(const coord_type& c1, const coord_type& c2) - { - m_x1 = c1.x; - m_y1 = c1.y; - m_dx = c2.x - c1.x; - m_dy = 1.0 / (c2.y - c1.y); - m_v1 = c1.color.v; - m_a1 = c1.color.a; - m_dv = c2.color.v - m_v1; - m_da = c2.color.a - m_a1; - } - - void calc(int y) - { - double k = 0.0; - if(y > m_y1) k = (y - m_y1) * m_dy; - gray8 c; - m_v = m_v1 + int(m_dv * k); - m_a = m_a1 + int(m_da * k); - m_x = int(m_x1 + m_dx * k); - } - - double m_x1; - double m_y1; - double m_dx; - double m_dy; - int m_v1; - int m_a1; - int m_dv; - int m_da; - int m_v; - int m_a; - int m_x; - }; - - - public: - //-------------------------------------------------------------------- - span_gouraud_gray(alloc_type& alloc) : base_type(alloc) {} - - //-------------------------------------------------------------------- - span_gouraud_gray(alloc_type& alloc, - const color_type& c1, - const color_type& c2, - const color_type& c3, - double x1, double y1, - double x2, double y2, - double x3, double y3, - double d = 0) : - base_type(alloc, c1, c2, c3, x1, y1, x2, y2, x3, y3, d) - {} - - //-------------------------------------------------------------------- - void prepare(unsigned max_span_len) - { - base_type::prepare(max_span_len); - - coord_type coord[3]; - arrange_vertices(coord); - - m_y2 = int(coord[1].y); - - m_swap = calc_point_location(coord[0].x, coord[0].y, - coord[2].x, coord[2].y, - coord[1].x, coord[1].y) < 0.0; - - m_c1.init(coord[0], coord[2]); - m_c2.init(coord[0], coord[1]); - m_c3.init(coord[1], coord[2]); - } - - //-------------------------------------------------------------------- - color_type* generate(int x, int y, unsigned len) - { - m_c1.calc(y); - const gray_calc* pc1 = &m_c1; - const gray_calc* pc2 = &m_c2; - - if(y < m_y2) - { - m_c2.calc(y+1); - } - else - { - m_c3.calc(y); - pc2 = &m_c3; - } - - if(m_swap) - { - const gray_calc* t = pc2; - pc2 = pc1; - pc1 = t; - } - - int nx = pc1->m_x; - unsigned nlen = pc2->m_x - pc1->m_x + 1; - - if(nlen < len) nlen = len; - - dda_line_interpolator<14> v(pc1->m_v, pc2->m_v, nlen); - dda_line_interpolator<14> a(pc1->m_a, pc2->m_a, nlen); - - if(nx < x) - { - unsigned d = unsigned(x - nx); - v += d; - a += d; - } - - color_type* span = base_type::allocator().span(); - do - { - span->v = (value_type)v.y(); - span->a = (value_type)a.y(); - ++v; - ++a; - ++span; - } - while(--len); - return base_type::allocator().span(); - } - - - private: - bool m_swap; - int m_y2; - gray_calc m_c1; - gray_calc m_c2; - gray_calc m_c3; - }; - - -} - -#endif |