600 lines
20 KiB
C
600 lines
20 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_RASTERIZER_OUTLINE_AA_INCLUDED
|
||
|
|
#define AGG_RASTERIZER_OUTLINE_AA_INCLUDED
|
||
|
|
|
||
|
|
#include "agg_basics.h"
|
||
|
|
#include "agg_line_aa_basics.h"
|
||
|
|
#include "agg_vertex_sequence.h"
|
||
|
|
|
||
|
|
namespace agg
|
||
|
|
{
|
||
|
|
|
||
|
|
//-------------------------------------------------------------------------
|
||
|
|
inline bool cmp_dist_start(int d) { return d > 0; }
|
||
|
|
inline bool cmp_dist_end(int d) { return d <= 0; }
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//-----------------------------------------------------------line_aa_vertex
|
||
|
|
// Vertex (x, y) with the distance to the next one. The last vertex has
|
||
|
|
// the distance between the last and the first points
|
||
|
|
struct line_aa_vertex
|
||
|
|
{
|
||
|
|
int x;
|
||
|
|
int y;
|
||
|
|
int len;
|
||
|
|
|
||
|
|
line_aa_vertex() {}
|
||
|
|
line_aa_vertex(int x_, int y_) :
|
||
|
|
x(x_),
|
||
|
|
y(y_),
|
||
|
|
len(0)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
bool operator () (const line_aa_vertex& val)
|
||
|
|
{
|
||
|
|
double dx = val.x - x;
|
||
|
|
double dy = val.y - y;
|
||
|
|
return (len = uround(sqrt(dx * dx + dy * dy))) >
|
||
|
|
(line_subpixel_scale + line_subpixel_scale / 2);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
//----------------------------------------------------------outline_aa_join_e
|
||
|
|
enum outline_aa_join_e
|
||
|
|
{
|
||
|
|
outline_no_join, //-----outline_no_join
|
||
|
|
outline_miter_join, //-----outline_miter_join
|
||
|
|
outline_round_join, //-----outline_round_join
|
||
|
|
outline_miter_accurate_join //-----outline_accurate_join
|
||
|
|
};
|
||
|
|
|
||
|
|
//=======================================================rasterizer_outline_aa
|
||
|
|
template<class Renderer, class Coord=line_coord> class rasterizer_outline_aa
|
||
|
|
{
|
||
|
|
private:
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
struct draw_vars
|
||
|
|
{
|
||
|
|
unsigned idx;
|
||
|
|
int x1, y1, x2, y2;
|
||
|
|
line_parameters curr, next;
|
||
|
|
int lcurr, lnext;
|
||
|
|
int xb1, yb1, xb2, yb2;
|
||
|
|
unsigned flags;
|
||
|
|
};
|
||
|
|
|
||
|
|
void draw(draw_vars& dv, unsigned start, unsigned end);
|
||
|
|
|
||
|
|
public:
|
||
|
|
typedef line_aa_vertex vertex_type;
|
||
|
|
typedef vertex_sequence<vertex_type, 6> vertex_storage_type;
|
||
|
|
|
||
|
|
rasterizer_outline_aa(Renderer& ren) :
|
||
|
|
m_ren(ren),
|
||
|
|
m_line_join(ren.accurate_join_only() ?
|
||
|
|
outline_miter_accurate_join :
|
||
|
|
outline_round_join),
|
||
|
|
m_round_cap(false),
|
||
|
|
m_start_x(0),
|
||
|
|
m_start_y(0)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
void line_join(outline_aa_join_e join)
|
||
|
|
{
|
||
|
|
m_line_join = m_ren.accurate_join_only() ?
|
||
|
|
outline_miter_accurate_join :
|
||
|
|
join;
|
||
|
|
}
|
||
|
|
bool line_join() const { return m_line_join; }
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
void round_cap(bool v) { m_round_cap = v; }
|
||
|
|
bool round_cap() const { return m_round_cap; }
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
void move_to(int x, int y)
|
||
|
|
{
|
||
|
|
m_src_vertices.modify_last(vertex_type(m_start_x = x, m_start_y = y));
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
void line_to(int x, int y)
|
||
|
|
{
|
||
|
|
m_src_vertices.add(vertex_type(x, y));
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
void move_to_d(double x, double y)
|
||
|
|
{
|
||
|
|
move_to(Coord::conv(x), Coord::conv(y));
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
void line_to_d(double x, double y)
|
||
|
|
{
|
||
|
|
line_to(Coord::conv(x), Coord::conv(y));
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
void render(bool close_polygon);
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
void add_vertex(double x, double y, unsigned cmd)
|
||
|
|
{
|
||
|
|
if(is_move_to(cmd))
|
||
|
|
{
|
||
|
|
render(false);
|
||
|
|
move_to_d(x, y);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if(is_end_poly(cmd))
|
||
|
|
{
|
||
|
|
render(is_closed(cmd));
|
||
|
|
if(is_closed(cmd))
|
||
|
|
{
|
||
|
|
move_to(m_start_x, m_start_y);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
line_to_d(x, y);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
template<class VertexSource>
|
||
|
|
void add_path(VertexSource& vs, unsigned path_id=0)
|
||
|
|
{
|
||
|
|
double x;
|
||
|
|
double y;
|
||
|
|
|
||
|
|
unsigned cmd;
|
||
|
|
vs.rewind(path_id);
|
||
|
|
while(!is_stop(cmd = vs.vertex(&x, &y)))
|
||
|
|
{
|
||
|
|
add_vertex(x, y, cmd);
|
||
|
|
}
|
||
|
|
render(false);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
template<class VertexSource, class ColorStorage, class PathId>
|
||
|
|
void render_all_paths(VertexSource& vs,
|
||
|
|
const ColorStorage& colors,
|
||
|
|
const PathId& path_id,
|
||
|
|
unsigned num_paths)
|
||
|
|
{
|
||
|
|
for(unsigned i = 0; i < num_paths; i++)
|
||
|
|
{
|
||
|
|
m_ren.color(colors[i]);
|
||
|
|
add_path(vs, path_id[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
template<class Ctrl> void render_ctrl(Ctrl& c)
|
||
|
|
{
|
||
|
|
unsigned i;
|
||
|
|
for(i = 0; i < c.num_paths(); i++)
|
||
|
|
{
|
||
|
|
m_ren.color(c.color(i));
|
||
|
|
add_path(c, i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
rasterizer_outline_aa(const rasterizer_outline_aa<Renderer, Coord>&);
|
||
|
|
const rasterizer_outline_aa<Renderer, Coord>& operator =
|
||
|
|
(const rasterizer_outline_aa<Renderer, Coord>&);
|
||
|
|
|
||
|
|
Renderer& m_ren;
|
||
|
|
vertex_storage_type m_src_vertices;
|
||
|
|
outline_aa_join_e m_line_join;
|
||
|
|
bool m_round_cap;
|
||
|
|
int m_start_x;
|
||
|
|
int m_start_y;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
template<class Renderer, class Coord>
|
||
|
|
void rasterizer_outline_aa<Renderer, Coord>::draw(draw_vars& dv,
|
||
|
|
unsigned start,
|
||
|
|
unsigned end)
|
||
|
|
{
|
||
|
|
unsigned i;
|
||
|
|
const vertex_storage_type::value_type* v;
|
||
|
|
|
||
|
|
for(i = start; i < end; i++)
|
||
|
|
{
|
||
|
|
if(m_line_join == outline_round_join)
|
||
|
|
{
|
||
|
|
dv.xb1 = dv.curr.x1 + (dv.curr.y2 - dv.curr.y1);
|
||
|
|
dv.yb1 = dv.curr.y1 - (dv.curr.x2 - dv.curr.x1);
|
||
|
|
dv.xb2 = dv.curr.x2 + (dv.curr.y2 - dv.curr.y1);
|
||
|
|
dv.yb2 = dv.curr.y2 - (dv.curr.x2 - dv.curr.x1);
|
||
|
|
}
|
||
|
|
|
||
|
|
switch(dv.flags)
|
||
|
|
{
|
||
|
|
case 0: m_ren.line3(dv.curr, dv.xb1, dv.yb1, dv.xb2, dv.yb2); break;
|
||
|
|
case 1: m_ren.line2(dv.curr, dv.xb2, dv.yb2); break;
|
||
|
|
case 2: m_ren.line1(dv.curr, dv.xb1, dv.yb1); break;
|
||
|
|
case 3: m_ren.line0(dv.curr); break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(m_line_join == outline_round_join && (dv.flags & 2) == 0)
|
||
|
|
{
|
||
|
|
m_ren.pie(dv.curr.x2, dv.curr.y2,
|
||
|
|
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
|
||
|
|
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1),
|
||
|
|
dv.curr.x2 + (dv.next.y2 - dv.next.y1),
|
||
|
|
dv.curr.y2 - (dv.next.x2 - dv.next.x1));
|
||
|
|
}
|
||
|
|
|
||
|
|
dv.x1 = dv.x2;
|
||
|
|
dv.y1 = dv.y2;
|
||
|
|
dv.lcurr = dv.lnext;
|
||
|
|
dv.lnext = m_src_vertices[dv.idx].len;
|
||
|
|
|
||
|
|
++dv.idx;
|
||
|
|
if(dv.idx >= m_src_vertices.size()) dv.idx = 0;
|
||
|
|
|
||
|
|
v = &m_src_vertices[dv.idx];
|
||
|
|
dv.x2 = v->x;
|
||
|
|
dv.y2 = v->y;
|
||
|
|
|
||
|
|
dv.curr = dv.next;
|
||
|
|
dv.next = line_parameters(dv.x1, dv.y1, dv.x2, dv.y2, dv.lnext);
|
||
|
|
dv.xb1 = dv.xb2;
|
||
|
|
dv.yb1 = dv.yb2;
|
||
|
|
|
||
|
|
switch(m_line_join)
|
||
|
|
{
|
||
|
|
case outline_no_join:
|
||
|
|
dv.flags = 3;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case outline_miter_join:
|
||
|
|
dv.flags >>= 1;
|
||
|
|
dv.flags |= ((dv.curr.diagonal_quadrant() ==
|
||
|
|
dv.next.diagonal_quadrant()) << 1);
|
||
|
|
if((dv.flags & 2) == 0)
|
||
|
|
{
|
||
|
|
bisectrix(dv.curr, dv.next, &dv.xb2, &dv.yb2);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case outline_round_join:
|
||
|
|
dv.flags >>= 1;
|
||
|
|
dv.flags |= ((dv.curr.diagonal_quadrant() ==
|
||
|
|
dv.next.diagonal_quadrant()) << 1);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case outline_miter_accurate_join:
|
||
|
|
dv.flags = 0;
|
||
|
|
bisectrix(dv.curr, dv.next, &dv.xb2, &dv.yb2);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
template<class Renderer, class Coord>
|
||
|
|
void rasterizer_outline_aa<Renderer, Coord>::render(bool close_polygon)
|
||
|
|
{
|
||
|
|
m_src_vertices.close(close_polygon);
|
||
|
|
draw_vars dv;
|
||
|
|
const vertex_storage_type::value_type* v;
|
||
|
|
int x1;
|
||
|
|
int y1;
|
||
|
|
int x2;
|
||
|
|
int y2;
|
||
|
|
int lprev;
|
||
|
|
|
||
|
|
if(close_polygon)
|
||
|
|
{
|
||
|
|
if(m_src_vertices.size() >= 3)
|
||
|
|
{
|
||
|
|
dv.idx = 2;
|
||
|
|
|
||
|
|
v = &m_src_vertices[m_src_vertices.size() - 1];
|
||
|
|
x1 = v->x;
|
||
|
|
y1 = v->y;
|
||
|
|
lprev = v->len;
|
||
|
|
|
||
|
|
v = &m_src_vertices[0];
|
||
|
|
x2 = v->x;
|
||
|
|
y2 = v->y;
|
||
|
|
dv.lcurr = v->len;
|
||
|
|
line_parameters prev(x1, y1, x2, y2, lprev);
|
||
|
|
|
||
|
|
v = &m_src_vertices[1];
|
||
|
|
dv.x1 = v->x;
|
||
|
|
dv.y1 = v->y;
|
||
|
|
dv.lnext = v->len;
|
||
|
|
dv.curr = line_parameters(x2, y2, dv.x1, dv.y1, dv.lcurr);
|
||
|
|
|
||
|
|
v = &m_src_vertices[dv.idx];
|
||
|
|
dv.x2 = v->x;
|
||
|
|
dv.y2 = v->y;
|
||
|
|
dv.next = line_parameters(dv.x1, dv.y1, dv.x2, dv.y2, dv.lnext);
|
||
|
|
|
||
|
|
dv.xb1 = 0;
|
||
|
|
dv.yb1 = 0;
|
||
|
|
dv.xb2 = 0;
|
||
|
|
dv.yb2 = 0;
|
||
|
|
|
||
|
|
switch(m_line_join)
|
||
|
|
{
|
||
|
|
case outline_no_join:
|
||
|
|
dv.flags = 3;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case outline_miter_join:
|
||
|
|
case outline_round_join:
|
||
|
|
dv.flags =
|
||
|
|
(prev.diagonal_quadrant() == dv.curr.diagonal_quadrant()) |
|
||
|
|
((dv.curr.diagonal_quadrant() == dv.next.diagonal_quadrant()) << 1);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case outline_miter_accurate_join:
|
||
|
|
dv.flags = 0;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if((dv.flags & 1) == 0 && m_line_join != outline_round_join)
|
||
|
|
{
|
||
|
|
bisectrix(prev, dv.curr, &dv.xb1, &dv.yb1);
|
||
|
|
}
|
||
|
|
|
||
|
|
if((dv.flags & 2) == 0 && m_line_join != outline_round_join)
|
||
|
|
{
|
||
|
|
bisectrix(dv.curr, dv.next, &dv.xb2, &dv.yb2);
|
||
|
|
}
|
||
|
|
draw(dv, 0, m_src_vertices.size());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
switch(m_src_vertices.size())
|
||
|
|
{
|
||
|
|
case 0:
|
||
|
|
case 1:
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 2:
|
||
|
|
{
|
||
|
|
v = &m_src_vertices[0];
|
||
|
|
x1 = v->x;
|
||
|
|
y1 = v->y;
|
||
|
|
lprev = v->len;
|
||
|
|
v = &m_src_vertices[1];
|
||
|
|
x2 = v->x;
|
||
|
|
y2 = v->y;
|
||
|
|
line_parameters lp(x1, y1, x2, y2, lprev);
|
||
|
|
if(m_round_cap)
|
||
|
|
{
|
||
|
|
m_ren.semidot(cmp_dist_start, x1, y1, x1 + (y2 - y1), y1 - (x2 - x1));
|
||
|
|
}
|
||
|
|
m_ren.line3(lp,
|
||
|
|
x1 + (y2 - y1),
|
||
|
|
y1 - (x2 - x1),
|
||
|
|
x2 + (y2 - y1),
|
||
|
|
y2 - (x2 - x1));
|
||
|
|
if(m_round_cap)
|
||
|
|
{
|
||
|
|
m_ren.semidot(cmp_dist_end, x2, y2, x2 + (y2 - y1), y2 - (x2 - x1));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 3:
|
||
|
|
{
|
||
|
|
int x3, y3;
|
||
|
|
int lnext;
|
||
|
|
v = &m_src_vertices[0];
|
||
|
|
x1 = v->x;
|
||
|
|
y1 = v->y;
|
||
|
|
lprev = v->len;
|
||
|
|
v = &m_src_vertices[1];
|
||
|
|
x2 = v->x;
|
||
|
|
y2 = v->y;
|
||
|
|
lnext = v->len;
|
||
|
|
v = &m_src_vertices[2];
|
||
|
|
x3 = v->x;
|
||
|
|
y3 = v->y;
|
||
|
|
line_parameters lp1(x1, y1, x2, y2, lprev);
|
||
|
|
line_parameters lp2(x2, y2, x3, y3, lnext);
|
||
|
|
|
||
|
|
if(m_round_cap)
|
||
|
|
{
|
||
|
|
m_ren.semidot(cmp_dist_start, x1, y1, x1 + (y2 - y1), y1 - (x2 - x1));
|
||
|
|
}
|
||
|
|
|
||
|
|
if(m_line_join == outline_round_join)
|
||
|
|
{
|
||
|
|
m_ren.line3(lp1, x1 + (y2 - y1), y1 - (x2 - x1),
|
||
|
|
x2 + (y2 - y1), y2 - (x2 - x1));
|
||
|
|
|
||
|
|
m_ren.pie(x2, y2, x2 + (y2 - y1), y2 - (x2 - x1),
|
||
|
|
x2 + (y3 - y2), y2 - (x3 - x2));
|
||
|
|
|
||
|
|
m_ren.line3(lp2, x2 + (y3 - y2), y2 - (x3 - x2),
|
||
|
|
x3 + (y3 - y2), y3 - (x3 - x2));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
bisectrix(lp1, lp2, &dv.xb1, &dv.yb1);
|
||
|
|
m_ren.line3(lp1, x1 + (y2 - y1), y1 - (x2 - x1),
|
||
|
|
dv.xb1, dv.yb1);
|
||
|
|
|
||
|
|
m_ren.line3(lp2, dv.xb1, dv.yb1,
|
||
|
|
x3 + (y3 - y2), y3 - (x3 - x2));
|
||
|
|
}
|
||
|
|
if(m_round_cap)
|
||
|
|
{
|
||
|
|
m_ren.semidot(cmp_dist_end, x3, y3, x3 + (y3 - y2), y3 - (x3 - x2));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
{
|
||
|
|
dv.idx = 3;
|
||
|
|
|
||
|
|
v = &m_src_vertices[0];
|
||
|
|
x1 = v->x;
|
||
|
|
y1 = v->y;
|
||
|
|
lprev = v->len;
|
||
|
|
|
||
|
|
v = &m_src_vertices[1];
|
||
|
|
x2 = v->x;
|
||
|
|
y2 = v->y;
|
||
|
|
dv.lcurr = v->len;
|
||
|
|
line_parameters prev(x1, y1, x2, y2, lprev);
|
||
|
|
|
||
|
|
v = &m_src_vertices[2];
|
||
|
|
dv.x1 = v->x;
|
||
|
|
dv.y1 = v->y;
|
||
|
|
dv.lnext = v->len;
|
||
|
|
dv.curr = line_parameters(x2, y2, dv.x1, dv.y1, dv.lcurr);
|
||
|
|
|
||
|
|
v = &m_src_vertices[dv.idx];
|
||
|
|
dv.x2 = v->x;
|
||
|
|
dv.y2 = v->y;
|
||
|
|
dv.next = line_parameters(dv.x1, dv.y1, dv.x2, dv.y2, dv.lnext);
|
||
|
|
|
||
|
|
dv.xb1 = 0;
|
||
|
|
dv.yb1 = 0;
|
||
|
|
dv.xb2 = 0;
|
||
|
|
dv.yb2 = 0;
|
||
|
|
|
||
|
|
switch(m_line_join)
|
||
|
|
{
|
||
|
|
case outline_no_join:
|
||
|
|
dv.flags = 3;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case outline_miter_join:
|
||
|
|
case outline_round_join:
|
||
|
|
dv.flags =
|
||
|
|
(prev.diagonal_quadrant() == dv.curr.diagonal_quadrant()) |
|
||
|
|
((dv.curr.diagonal_quadrant() == dv.next.diagonal_quadrant()) << 1);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case outline_miter_accurate_join:
|
||
|
|
dv.flags = 0;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(m_round_cap)
|
||
|
|
{
|
||
|
|
m_ren.semidot(cmp_dist_start, x1, y1, x1 + (y2 - y1), y1 - (x2 - x1));
|
||
|
|
}
|
||
|
|
if((dv.flags & 1) == 0)
|
||
|
|
{
|
||
|
|
if(m_line_join == outline_round_join)
|
||
|
|
{
|
||
|
|
m_ren.line3(prev, x1 + (y2 - y1), y1 - (x2 - x1),
|
||
|
|
x2 + (y2 - y1), y2 - (x2 - x1));
|
||
|
|
m_ren.pie(prev.x2, prev.y2,
|
||
|
|
x2 + (y2 - y1), y2 - (x2 - x1),
|
||
|
|
dv.curr.x1 + (dv.curr.y2 - dv.curr.y1),
|
||
|
|
dv.curr.y1 - (dv.curr.x2 - dv.curr.x1));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
bisectrix(prev, dv.curr, &dv.xb1, &dv.yb1);
|
||
|
|
m_ren.line3(prev, x1 + (y2 - y1), y1 - (x2 - x1),
|
||
|
|
dv.xb1, dv.yb1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
m_ren.line1(prev,
|
||
|
|
x1 + (y2 - y1),
|
||
|
|
y1 - (x2 - x1));
|
||
|
|
}
|
||
|
|
if((dv.flags & 2) == 0 && m_line_join != outline_round_join)
|
||
|
|
{
|
||
|
|
bisectrix(dv.curr, dv.next, &dv.xb2, &dv.yb2);
|
||
|
|
}
|
||
|
|
|
||
|
|
draw(dv, 1, m_src_vertices.size() - 2);
|
||
|
|
|
||
|
|
if((dv.flags & 1) == 0)
|
||
|
|
{
|
||
|
|
if(m_line_join == outline_round_join)
|
||
|
|
{
|
||
|
|
m_ren.line3(dv.curr,
|
||
|
|
dv.curr.x1 + (dv.curr.y2 - dv.curr.y1),
|
||
|
|
dv.curr.y1 - (dv.curr.x2 - dv.curr.x1),
|
||
|
|
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
|
||
|
|
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
m_ren.line3(dv.curr, dv.xb1, dv.yb1,
|
||
|
|
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
|
||
|
|
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
m_ren.line2(dv.curr,
|
||
|
|
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
|
||
|
|
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
|
||
|
|
}
|
||
|
|
if(m_round_cap)
|
||
|
|
{
|
||
|
|
m_ren.semidot(cmp_dist_end, dv.curr.x2, dv.curr.y2,
|
||
|
|
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
|
||
|
|
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
m_src_vertices.remove_all();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|