241 lines
8.3 KiB
C
241 lines
8.3 KiB
C
|
//----------------------------------------------------------------------------
|
||
|
|
// Anti-Grain Geometry - Version 2.4
|
||
|
|
// 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
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
#ifndef AGG_PIXFMT_AMASK_ADAPTOR_INCLUDED
|
||
|
|
#define AGG_PIXFMT_AMASK_ADAPTOR_INCLUDED
|
||
|
|
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
#include "agg_array.h"
|
||
|
|
#include "agg_rendering_buffer.h"
|
||
|
|
|
||
|
|
|
||
|
|
namespace agg
|
||
|
|
{
|
||
|
|
//==================================================pixfmt_amask_adaptor
|
||
|
|
template<class PixFmt, class AlphaMask> class pixfmt_amask_adaptor
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
typedef PixFmt pixfmt_type;
|
||
|
|
typedef typename pixfmt_type::color_type color_type;
|
||
|
|
typedef typename pixfmt_type::row_data row_data;
|
||
|
|
typedef AlphaMask amask_type;
|
||
|
|
typedef typename amask_type::cover_type cover_type;
|
||
|
|
|
||
|
|
private:
|
||
|
|
enum span_extra_tail_e { span_extra_tail = 256 };
|
||
|
|
|
||
|
|
void realloc_span(unsigned len)
|
||
|
|
{
|
||
|
|
if(len > m_span.size())
|
||
|
|
{
|
||
|
|
m_span.resize(len + span_extra_tail);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void init_span(unsigned len)
|
||
|
|
{
|
||
|
|
realloc_span(len);
|
||
|
|
memset(&m_span[0], amask_type::cover_full, len * sizeof(cover_type));
|
||
|
|
}
|
||
|
|
|
||
|
|
void init_span(unsigned len, const cover_type* covers)
|
||
|
|
{
|
||
|
|
realloc_span(len);
|
||
|
|
memcpy(&m_span[0], covers, len * sizeof(cover_type));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
public:
|
||
|
|
pixfmt_amask_adaptor(pixfmt_type& pixf, const amask_type& mask) :
|
||
|
|
m_pixf(&pixf), m_mask(&mask), m_span()
|
||
|
|
{}
|
||
|
|
|
||
|
|
void attach_pixfmt(pixfmt_type& pixf) { m_pixf = &pixf; }
|
||
|
|
void attach_alpha_mask(const amask_type& mask) { m_mask = &mask; }
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
template<class PixFmt2>
|
||
|
|
bool attach_pixfmt(PixFmt2& pixf, int x1, int y1, int x2, int y2)
|
||
|
|
{
|
||
|
|
return m_pixf->attach(pixf, x1, y1, x2, y2);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
unsigned width() const { return m_pixf->width(); }
|
||
|
|
unsigned height() const { return m_pixf->height(); }
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
color_type pixel(int x, int y)
|
||
|
|
{
|
||
|
|
return m_pixf->pixel(x, y);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void copy_pixel(int x, int y, const color_type& c)
|
||
|
|
{
|
||
|
|
m_pixf->blend_pixel(x, y, c, m_mask->pixel(x, y));
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void blend_pixel(int x, int y, const color_type& c, cover_type cover)
|
||
|
|
{
|
||
|
|
m_pixf->blend_pixel(x, y, c, m_mask->combine_pixel(x, y, cover));
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void copy_hline(int x, int y,
|
||
|
|
unsigned len,
|
||
|
|
const color_type& c)
|
||
|
|
{
|
||
|
|
realloc_span(len);
|
||
|
|
m_mask->fill_hspan(x, y, &m_span[0], len);
|
||
|
|
m_pixf->blend_solid_hspan(x, y, len, c, &m_span[0]);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void blend_hline(int x, int y,
|
||
|
|
unsigned len,
|
||
|
|
const color_type& c,
|
||
|
|
cover_type cover)
|
||
|
|
{
|
||
|
|
init_span(len);
|
||
|
|
m_mask->combine_hspan(x, y, &m_span[0], len);
|
||
|
|
m_pixf->blend_solid_hspan(x, y, len, c, &m_span[0]);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void copy_vline(int x, int y,
|
||
|
|
unsigned len,
|
||
|
|
const color_type& c)
|
||
|
|
{
|
||
|
|
realloc_span(len);
|
||
|
|
m_mask->fill_vspan(x, y, &m_span[0], len);
|
||
|
|
m_pixf->blend_solid_vspan(x, y, len, c, &m_span[0]);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void blend_vline(int x, int y,
|
||
|
|
unsigned len,
|
||
|
|
const color_type& c,
|
||
|
|
cover_type cover)
|
||
|
|
{
|
||
|
|
init_span(len);
|
||
|
|
m_mask->combine_vspan(x, y, &m_span[0], len);
|
||
|
|
m_pixf->blend_solid_vspan(x, y, len, c, &m_span[0]);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void copy_from(const rendering_buffer& from,
|
||
|
|
int xdst, int ydst,
|
||
|
|
int xsrc, int ysrc,
|
||
|
|
unsigned len)
|
||
|
|
{
|
||
|
|
m_pixf->copy_from(from, xdst, ydst, xsrc, ysrc, len);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void blend_solid_hspan(int x, int y,
|
||
|
|
unsigned len,
|
||
|
|
const color_type& c,
|
||
|
|
const cover_type* covers)
|
||
|
|
{
|
||
|
|
init_span(len, covers);
|
||
|
|
m_mask->combine_hspan(x, y, &m_span[0], len);
|
||
|
|
m_pixf->blend_solid_hspan(x, y, len, c, &m_span[0]);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void blend_solid_vspan(int x, int y,
|
||
|
|
unsigned len,
|
||
|
|
const color_type& c,
|
||
|
|
const cover_type* covers)
|
||
|
|
{
|
||
|
|
init_span(len, covers);
|
||
|
|
m_mask->combine_vspan(x, y, &m_span[0], len);
|
||
|
|
m_pixf->blend_solid_vspan(x, y, len, c, &m_span[0]);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void copy_color_hspan(int x, int y, unsigned len, const color_type* colors)
|
||
|
|
{
|
||
|
|
realloc_span(len);
|
||
|
|
m_mask->fill_hspan(x, y, &m_span[0], len);
|
||
|
|
m_pixf->blend_color_hspan(x, y, len, colors, &m_span[0], cover_full);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void copy_color_vspan(int x, int y, unsigned len, const color_type* colors)
|
||
|
|
{
|
||
|
|
realloc_span(len);
|
||
|
|
m_mask->fill_vspan(x, y, &m_span[0], len);
|
||
|
|
m_pixf->blend_color_vspan(x, y, len, colors, &m_span[0], cover_full);
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void blend_color_hspan(int x, int y,
|
||
|
|
unsigned len,
|
||
|
|
const color_type* colors,
|
||
|
|
const cover_type* covers,
|
||
|
|
cover_type cover = cover_full)
|
||
|
|
{
|
||
|
|
if(covers)
|
||
|
|
{
|
||
|
|
init_span(len, covers);
|
||
|
|
m_mask->combine_hspan(x, y, &m_span[0], len);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
realloc_span(len);
|
||
|
|
m_mask->fill_hspan(x, y, &m_span[0], len);
|
||
|
|
}
|
||
|
|
m_pixf->blend_color_hspan(x, y, len, colors, &m_span[0], cover);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------
|
||
|
|
void blend_color_vspan(int x, int y,
|
||
|
|
unsigned len,
|
||
|
|
const color_type* colors,
|
||
|
|
const cover_type* covers,
|
||
|
|
cover_type cover = cover_full)
|
||
|
|
{
|
||
|
|
if(covers)
|
||
|
|
{
|
||
|
|
init_span(len, covers);
|
||
|
|
m_mask->combine_vspan(x, y, &m_span[0], len);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
realloc_span(len);
|
||
|
|
m_mask->fill_vspan(x, y, &m_span[0], len);
|
||
|
|
}
|
||
|
|
m_pixf->blend_color_vspan(x, y, len, colors, &m_span[0], cover);
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
pixfmt_type* m_pixf;
|
||
|
|
const amask_type* m_mask;
|
||
|
|
pod_array<cover_type> m_span;
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|