350 lines
12 KiB
C
350 lines
12 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
|
||
|
//----------------------------------------------------------------------------
|
||
|
//
|
||
|
// class renderer_mclip
|
||
|
//
|
||
|
//----------------------------------------------------------------------------
|
||
|
|
||
|
#ifndef AGG_RENDERER_MCLIP_INCLUDED
|
||
|
#define AGG_RENDERER_MCLIP_INCLUDED
|
||
|
|
||
|
#include "agg_basics.h"
|
||
|
#include "agg_array.h"
|
||
|
#include "agg_renderer_base.h"
|
||
|
|
||
|
namespace agg
|
||
|
{
|
||
|
|
||
|
//----------------------------------------------------------renderer_mclip
|
||
|
template<class PixelFormat> class renderer_mclip
|
||
|
{
|
||
|
public:
|
||
|
typedef PixelFormat pixfmt_type;
|
||
|
typedef typename pixfmt_type::color_type color_type;
|
||
|
typedef typename pixfmt_type::row_data row_data;
|
||
|
typedef renderer_base<pixfmt_type> base_ren_type;
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
explicit renderer_mclip(pixfmt_type& pixf) :
|
||
|
m_ren(pixf),
|
||
|
m_curr_cb(0),
|
||
|
m_bounds(m_ren.xmin(), m_ren.ymin(), m_ren.xmax(), m_ren.ymax())
|
||
|
{}
|
||
|
void attach(pixfmt_type& pixf)
|
||
|
{
|
||
|
m_ren.attach(pixf);
|
||
|
reset_clipping(true);
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
const pixfmt_type& ren() const { return m_ren.ren(); }
|
||
|
pixfmt_type& ren() { return m_ren.ren(); }
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
unsigned width() const { return m_ren.width(); }
|
||
|
unsigned height() const { return m_ren.height(); }
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
const rect_i& clip_box() const { return m_ren.clip_box(); }
|
||
|
int xmin() const { return m_ren.xmin(); }
|
||
|
int ymin() const { return m_ren.ymin(); }
|
||
|
int xmax() const { return m_ren.xmax(); }
|
||
|
int ymax() const { return m_ren.ymax(); }
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
const rect_i& bounding_clip_box() const { return m_bounds; }
|
||
|
int bounding_xmin() const { return m_bounds.x1; }
|
||
|
int bounding_ymin() const { return m_bounds.y1; }
|
||
|
int bounding_xmax() const { return m_bounds.x2; }
|
||
|
int bounding_ymax() const { return m_bounds.y2; }
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void first_clip_box()
|
||
|
{
|
||
|
m_curr_cb = 0;
|
||
|
if(m_clip.size())
|
||
|
{
|
||
|
const rect_i& cb = m_clip[0];
|
||
|
m_ren.clip_box_naked(cb.x1, cb.y1, cb.x2, cb.y2);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
bool next_clip_box()
|
||
|
{
|
||
|
if(++m_curr_cb < m_clip.size())
|
||
|
{
|
||
|
const rect_i& cb = m_clip[m_curr_cb];
|
||
|
m_ren.clip_box_naked(cb.x1, cb.y1, cb.x2, cb.y2);
|
||
|
return true;
|
||
|
}
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void reset_clipping(bool visibility)
|
||
|
{
|
||
|
m_ren.reset_clipping(visibility);
|
||
|
m_clip.remove_all();
|
||
|
m_curr_cb = 0;
|
||
|
m_bounds = m_ren.clip_box();
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void add_clip_box(int x1, int y1, int x2, int y2)
|
||
|
{
|
||
|
rect_i cb(x1, y1, x2, y2);
|
||
|
cb.normalize();
|
||
|
if(cb.clip(rect_i(0, 0, width() - 1, height() - 1)))
|
||
|
{
|
||
|
m_clip.add(cb);
|
||
|
if(cb.x1 < m_bounds.x1) m_bounds.x1 = cb.x1;
|
||
|
if(cb.y1 < m_bounds.y1) m_bounds.y1 = cb.y1;
|
||
|
if(cb.x2 > m_bounds.x2) m_bounds.x2 = cb.x2;
|
||
|
if(cb.y2 > m_bounds.y2) m_bounds.y2 = cb.y2;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void clear(const color_type& c)
|
||
|
{
|
||
|
m_ren.clear(c);
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void copy_pixel(int x, int y, const color_type& c)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
if(m_ren.inbox(x, y))
|
||
|
{
|
||
|
m_ren.ren().copy_pixel(x, y, c);
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void blend_pixel(int x, int y, const color_type& c, cover_type cover)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
if(m_ren.inbox(x, y))
|
||
|
{
|
||
|
m_ren.ren().blend_pixel(x, y, c, cover);
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
color_type pixel(int x, int y) const
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
if(m_ren.inbox(x, y))
|
||
|
{
|
||
|
return m_ren.ren().pixel(x, y);
|
||
|
}
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
return color_type::no_color();
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void copy_hline(int x1, int y, int x2, const color_type& c)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.copy_hline(x1, y, x2, c);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void copy_vline(int x, int y1, int y2, const color_type& c)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.copy_vline(x, y1, y2, c);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void blend_hline(int x1, int y, int x2,
|
||
|
const color_type& c, cover_type cover)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.blend_hline(x1, y, x2, c, cover);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void blend_vline(int x, int y1, int y2,
|
||
|
const color_type& c, cover_type cover)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.blend_vline(x, y1, y2, c, cover);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void copy_bar(int x1, int y1, int x2, int y2, const color_type& c)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.copy_bar(x1, y1, x2, y2, c);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void blend_bar(int x1, int y1, int x2, int y2,
|
||
|
const color_type& c, cover_type cover)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.blend_bar(x1, y1, x2, y2, c, cover);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void blend_solid_hspan(int x, int y, int len,
|
||
|
const color_type& c, const cover_type* covers)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.blend_solid_hspan(x, y, len, c, covers);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void blend_solid_vspan(int x, int y, int len,
|
||
|
const color_type& c, const cover_type* covers)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.blend_solid_vspan(x, y, len, c, covers);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void copy_color_hspan(int x, int y, int len, const color_type* colors)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.copy_color_hspan(x, y, len, colors);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void blend_color_hspan(int x, int y, int len,
|
||
|
const color_type* colors,
|
||
|
const cover_type* covers,
|
||
|
cover_type cover = cover_full)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.blend_color_hspan(x, y, len, colors, covers, cover);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void blend_color_vspan(int x, int y, int len,
|
||
|
const color_type* colors,
|
||
|
const cover_type* covers,
|
||
|
cover_type cover = cover_full)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.blend_color_vspan(x, y, len, colors, covers, cover);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
void copy_from(const rendering_buffer& from,
|
||
|
const rect_i* rc=0,
|
||
|
int x_to=0,
|
||
|
int y_to=0)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.copy_from(from, rc, x_to, y_to);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
//--------------------------------------------------------------------
|
||
|
template<class SrcPixelFormatRenderer>
|
||
|
void blend_from(const SrcPixelFormatRenderer& src,
|
||
|
const rect_i* rect_src_ptr = 0,
|
||
|
int dx = 0,
|
||
|
int dy = 0,
|
||
|
cover_type cover = cover_full)
|
||
|
{
|
||
|
first_clip_box();
|
||
|
do
|
||
|
{
|
||
|
m_ren.blend_from(src, rect_src_ptr, dx, dy, cover);
|
||
|
}
|
||
|
while(next_clip_box());
|
||
|
}
|
||
|
|
||
|
|
||
|
private:
|
||
|
renderer_mclip(const renderer_mclip<PixelFormat>&);
|
||
|
const renderer_mclip<PixelFormat>&
|
||
|
operator = (const renderer_mclip<PixelFormat>&);
|
||
|
|
||
|
base_ren_type m_ren;
|
||
|
pod_bvector<rect_i, 4> m_clip;
|
||
|
unsigned m_curr_cb;
|
||
|
rect_i m_bounds;
|
||
|
};
|
||
|
|
||
|
|
||
|
}
|
||
|
|
||
|
#endif
|