diff options
Diffstat (limited to 'agg/inc/agg_span_gouraud_rgba.h')
| -rwxr-xr-x | agg/inc/agg_span_gouraud_rgba.h | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/agg/inc/agg_span_gouraud_rgba.h b/agg/inc/agg_span_gouraud_rgba.h deleted file mode 100755 index 75679a9426c2..000000000000 --- a/agg/inc/agg_span_gouraud_rgba.h +++ /dev/null @@ -1,206 +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_RGBA_INCLUDED -#define AGG_SPAN_GOURAUD_RGBA_INCLUDED - -#include "agg_basics.h" -#include "agg_color_rgba.h" -#include "agg_dda_line.h" -#include "agg_span_gouraud.h" - -namespace agg -{ - - //=======================================================span_gouraud_rgba - template<class ColorT, class Allocator = span_allocator<ColorT> > - class span_gouraud_rgba : public span_gouraud<ColorT, Allocator> - { - public: - typedef Allocator alloc_type; - typedef ColorT color_type; - typedef typename ColorT::value_type value_type; - typedef span_gouraud<color_type, alloc_type> base_type; - typedef typename base_type::coord_type coord_type; - - private: - //-------------------------------------------------------------------- - struct rgba_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_r1 = c1.color.r; - m_g1 = c1.color.g; - m_b1 = c1.color.b; - m_a1 = c1.color.a; - m_dr = c2.color.r - m_r1; - m_dg = c2.color.g - m_g1; - m_db = c2.color.b - m_b1; - 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; - color_type rgba; - m_r = m_r1 + int(m_dr * k); - m_g = m_g1 + int(m_dg * k); - m_b = m_b1 + int(m_db * 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_r1; - int m_g1; - int m_b1; - int m_a1; - int m_dr; - int m_dg; - int m_db; - int m_da; - int m_r; - int m_g; - int m_b; - int m_a; - int m_x; - }; - - public: - - //-------------------------------------------------------------------- - span_gouraud_rgba(alloc_type& alloc) : base_type(alloc) {} - - //-------------------------------------------------------------------- - span_gouraud_rgba(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_rgba1.init(coord[0], coord[2]); - m_rgba2.init(coord[0], coord[1]); - m_rgba3.init(coord[1], coord[2]); - } - - //-------------------------------------------------------------------- - color_type* generate(int x, int y, unsigned len) - { - m_rgba1.calc(y); - const rgba_calc* pc1 = &m_rgba1; - const rgba_calc* pc2 = &m_rgba2; - - if(y < m_y2) - { - m_rgba2.calc(y+1); - } - else - { - m_rgba3.calc(y); - pc2 = &m_rgba3; - } - - if(m_swap) - { - const rgba_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> r(pc1->m_r, pc2->m_r, nlen); - dda_line_interpolator<14> g(pc1->m_g, pc2->m_g, nlen); - dda_line_interpolator<14> b(pc1->m_b, pc2->m_b, nlen); - dda_line_interpolator<14> a(pc1->m_a, pc2->m_a, nlen); - - if(nx < x) - { - unsigned d = unsigned(x - nx); - r += d; - g += d; - b += d; - a += d; - } - - color_type* span = base_type::allocator().span(); - do - { - span->r = (value_type)r.y(); - span->g = (value_type)g.y(); - span->b = (value_type)b.y(); - span->a = (value_type)a.y(); - ++r; - ++g; - ++b; - ++a; - ++span; - } - while(--len); - return base_type::allocator().span(); - } - - - private: - bool m_swap; - int m_y2; - rgba_calc m_rgba1; - rgba_calc m_rgba2; - rgba_calc m_rgba3; - }; - - - -} - -#endif |