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-rwxr-xr-xagg/source/agg_vpgen_clip_polygon.cpp133
1 files changed, 0 insertions, 133 deletions
diff --git a/agg/source/agg_vpgen_clip_polygon.cpp b/agg/source/agg_vpgen_clip_polygon.cpp
deleted file mode 100755
index 70f6e21..0000000
--- a/agg/source/agg_vpgen_clip_polygon.cpp
+++ /dev/null
@@ -1,133 +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
-//----------------------------------------------------------------------------
-
-#include "agg_vpgen_clip_polygon.h"
-#include "agg_clip_liang_barsky.h"
-
-namespace agg
-{
-
- //------------------------------------------------------------------------
- // Determine the clipping code of the vertex according to the
- // Cyrus-Beck line clipping algorithm
- //
- // | |
- // 0110 | 0010 | 0011
- // | |
- // -------+--------+-------- clip_box.y2
- // | |
- // 0100 | 0000 | 0001
- // | |
- // -------+--------+-------- clip_box.y1
- // | |
- // 1100 | 1000 | 1001
- // | |
- // clip_box.x1 clip_box.x2
- //
- //
- unsigned vpgen_clip_polygon::clipping_flags(double x, double y)
- {
- if(x < m_clip_box.x1)
- {
- if(y > m_clip_box.y2) return 6;
- if(y < m_clip_box.y1) return 12;
- return 4;
- }
-
- if(x > m_clip_box.x2)
- {
- if(y > m_clip_box.y2) return 3;
- if(y < m_clip_box.y1) return 9;
- return 1;
- }
-
- if(y > m_clip_box.y2) return 2;
- if(y < m_clip_box.y1) return 8;
-
- return 0;
- }
-
- //----------------------------------------------------------------------------
- void vpgen_clip_polygon::reset()
- {
- m_vertex = 0;
- m_num_vertices = 0;
- }
-
- //----------------------------------------------------------------------------
- void vpgen_clip_polygon::move_to(double x, double y)
- {
- m_vertex = 0;
- m_num_vertices = 0;
- m_clip_flags = clipping_flags(x, y);
- if(m_clip_flags == 0)
- {
- m_x[0] = x;
- m_y[0] = y;
- m_num_vertices = 1;
- }
- m_x1 = x;
- m_y1 = y;
- m_cmd = path_cmd_move_to;
- }
-
-
- //----------------------------------------------------------------------------
- void vpgen_clip_polygon::line_to(double x, double y)
- {
- m_vertex = 0;
- m_num_vertices = 0;
- unsigned flags = clipping_flags(x, y);
-
- if(m_clip_flags == flags)
- {
- if(flags == 0)
- {
- m_x[0] = x;
- m_y[0] = y;
- m_num_vertices = 1;
- }
- }
- else
- {
- m_num_vertices = clip_liang_barsky(m_x1, m_y1,
- x, y,
- m_clip_box,
- m_x, m_y);
- }
-
- m_clip_flags = flags;
- m_x1 = x;
- m_y1 = y;
- }
-
-
- //----------------------------------------------------------------------------
- unsigned vpgen_clip_polygon::vertex(double* x, double* y)
- {
- if(m_vertex < m_num_vertices)
- {
- *x = m_x[m_vertex];
- *y = m_y[m_vertex];
- ++m_vertex;
- unsigned cmd = m_cmd;
- m_cmd = path_cmd_line_to;
- return cmd;
- }
- return path_cmd_stop;
- }
-
-
-}