diff options
| author | Tobias Weimer <wishmaster51@googlemail.com> | 2015-07-12 14:10:16 +0000 |
|---|---|---|
| committer | Tobias Weimer <wishmaster51@googlemail.com> | 2015-07-12 14:10:16 +0000 |
| commit | f4ce2b5c214cce406dbd7a73dc7f35ae409546ad (patch) | |
| tree | 533cc821ffc9c5664c075930be6a40fde9593aba /plugins/Clist_ng/AGG/src/agg_vcgen_stroke.cpp | |
| parent | 71a88c6d8c4578ca24e02a5c6f4860c206e7c6da (diff) | |
Clist NG:
Commit of CList NG by silvercircle from https://github.com/silvercircle/miranda-ng
This is based on clist_nicer and Anti-Grain Geometry: http://www.antigrain.com/
This is the first version that actually compiles.
Do NOT use it in production environment!
git-svn-id: http://svn.miranda-ng.org/main/trunk@14543 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
Diffstat (limited to 'plugins/Clist_ng/AGG/src/agg_vcgen_stroke.cpp')
| -rw-r--r-- | plugins/Clist_ng/AGG/src/agg_vcgen_stroke.cpp | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/plugins/Clist_ng/AGG/src/agg_vcgen_stroke.cpp b/plugins/Clist_ng/AGG/src/agg_vcgen_stroke.cpp new file mode 100644 index 0000000000..b36927bf31 --- /dev/null +++ b/plugins/Clist_ng/AGG/src/agg_vcgen_stroke.cpp @@ -0,0 +1,219 @@ +//----------------------------------------------------------------------------
+// Anti-Grain Geometry (AGG) - Version 2.5
+// A high quality rendering engine for C++
+// Copyright (C) 2002-2006 Maxim Shemanarev
+// Contact: mcseem@antigrain.com
+// mcseemagg@yahoo.com
+// http://antigrain.com
+//
+// AGG is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// AGG is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with AGG; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301, USA.
+//----------------------------------------------------------------------------
+
+#include <math.h>
+#include "agg_vcgen_stroke.h"
+#include "agg_shorten_path.h"
+
+namespace agg
+{
+
+ //------------------------------------------------------------------------
+ vcgen_stroke::vcgen_stroke() :
+ m_stroker(),
+ m_src_vertices(),
+ m_out_vertices(),
+ m_shorten(0.0),
+ m_closed(0),
+ m_status(initial),
+ m_src_vertex(0),
+ m_out_vertex(0)
+ {
+ }
+
+ //------------------------------------------------------------------------
+ void vcgen_stroke::remove_all()
+ {
+ m_src_vertices.remove_all();
+ m_closed = 0;
+ m_status = initial;
+ }
+
+
+ //------------------------------------------------------------------------
+ void vcgen_stroke::add_vertex(double x, double y, unsigned cmd)
+ {
+ m_status = initial;
+ if(is_move_to(cmd))
+ {
+ m_src_vertices.modify_last(vertex_dist(x, y));
+ }
+ else
+ {
+ if(is_vertex(cmd))
+ {
+ m_src_vertices.add(vertex_dist(x, y));
+ }
+ else
+ {
+ m_closed = get_close_flag(cmd);
+ }
+ }
+ }
+
+ //------------------------------------------------------------------------
+ void vcgen_stroke::rewind(unsigned)
+ {
+ if(m_status == initial)
+ {
+ m_src_vertices.close(m_closed != 0);
+ shorten_path(m_src_vertices, m_shorten, m_closed);
+ if(m_src_vertices.size() < 3) m_closed = 0;
+ }
+ m_status = ready;
+ m_src_vertex = 0;
+ m_out_vertex = 0;
+ }
+
+
+ //------------------------------------------------------------------------
+ unsigned vcgen_stroke::vertex(double* x, double* y)
+ {
+ unsigned cmd = path_cmd_line_to;
+ while(!is_stop(cmd))
+ {
+ switch(m_status)
+ {
+ case initial:
+ rewind(0);
+
+ case ready:
+ if(m_src_vertices.size() < 2 + unsigned(m_closed != 0))
+ {
+ cmd = path_cmd_stop;
+ break;
+ }
+ m_status = m_closed ? outline1 : cap1;
+ cmd = path_cmd_move_to;
+ m_src_vertex = 0;
+ m_out_vertex = 0;
+ break;
+
+ case cap1:
+ m_stroker.calc_cap(m_out_vertices,
+ m_src_vertices[0],
+ m_src_vertices[1],
+ m_src_vertices[0].dist);
+ m_src_vertex = 1;
+ m_prev_status = outline1;
+ m_status = out_vertices;
+ m_out_vertex = 0;
+ break;
+
+ case cap2:
+ m_stroker.calc_cap(m_out_vertices,
+ m_src_vertices[m_src_vertices.size() - 1],
+ m_src_vertices[m_src_vertices.size() - 2],
+ m_src_vertices[m_src_vertices.size() - 2].dist);
+ m_prev_status = outline2;
+ m_status = out_vertices;
+ m_out_vertex = 0;
+ break;
+
+ case outline1:
+ if(m_closed)
+ {
+ if(m_src_vertex >= m_src_vertices.size())
+ {
+ m_prev_status = close_first;
+ m_status = end_poly1;
+ break;
+ }
+ }
+ else
+ {
+ if(m_src_vertex >= m_src_vertices.size() - 1)
+ {
+ m_status = cap2;
+ break;
+ }
+ }
+ m_stroker.calc_join(m_out_vertices,
+ m_src_vertices.prev(m_src_vertex),
+ m_src_vertices.curr(m_src_vertex),
+ m_src_vertices.next(m_src_vertex),
+ m_src_vertices.prev(m_src_vertex).dist,
+ m_src_vertices.curr(m_src_vertex).dist);
+ ++m_src_vertex;
+ m_prev_status = m_status;
+ m_status = out_vertices;
+ m_out_vertex = 0;
+ break;
+
+ case close_first:
+ m_status = outline2;
+ cmd = path_cmd_move_to;
+
+ case outline2:
+ if(m_src_vertex <= unsigned(m_closed == 0))
+ {
+ m_status = end_poly2;
+ m_prev_status = stop;
+ break;
+ }
+
+ --m_src_vertex;
+ m_stroker.calc_join(m_out_vertices,
+ m_src_vertices.next(m_src_vertex),
+ m_src_vertices.curr(m_src_vertex),
+ m_src_vertices.prev(m_src_vertex),
+ m_src_vertices.curr(m_src_vertex).dist,
+ m_src_vertices.prev(m_src_vertex).dist);
+
+ m_prev_status = m_status;
+ m_status = out_vertices;
+ m_out_vertex = 0;
+ break;
+
+ case out_vertices:
+ if(m_out_vertex >= m_out_vertices.size())
+ {
+ m_status = m_prev_status;
+ }
+ else
+ {
+ const point_d& c = m_out_vertices[m_out_vertex++];
+ *x = c.x;
+ *y = c.y;
+ return cmd;
+ }
+ break;
+
+ case end_poly1:
+ m_status = m_prev_status;
+ return path_cmd_end_poly | path_flags_close | path_flags_ccw;
+
+ case end_poly2:
+ m_status = m_prev_status;
+ return path_cmd_end_poly | path_flags_close | path_flags_cw;
+
+ case stop:
+ cmd = path_cmd_stop;
+ break;
+ }
+ }
+ return cmd;
+ }
+
+}
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