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//----------------------------------------------------------------------------
// 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
//----------------------------------------------------------------------------
//
// Line dash generator
//
//----------------------------------------------------------------------------
#ifndef AGG_VCGEN_DASH_INCLUDED
#define AGG_VCGEN_DASH_INCLUDED
#include "agg_basics.h"
#include "agg_vertex_sequence.h"
namespace agg
{
class vcgen_dash
{
enum max_dashes_e {
max_dashes = 32
};
enum status_e {
initial,
ready,
polyline,
stop
};
public:
typedef vertex_sequence<vertex_dist, 6> vertex_storage;
vcgen_dash();
void remove_all_dashes();
void add_dash(float dash_len, float gap_len);
void dash_start(float ds);
void shorten(float s)
{
m_shorten = s;
}
double shorten() const
{
return m_shorten;
}
void remove_all();
void add_vertex(float x, float y, unsigned cmd);
void rewind(unsigned path_id);
unsigned vertex(float* x, float* y);
private:
vcgen_dash(const vcgen_dash&);
const vcgen_dash& operator = (const vcgen_dash&);
void calc_dash_start(float ds);
float m_dashes[max_dashes];
float m_total_dash_len;
unsigned m_num_dashes;
float m_dash_start;
float m_shorten;
float m_curr_dash_start;
unsigned m_curr_dash;
float m_curr_rest;
const vertex_dist* m_v1;
const vertex_dist* m_v2;
vertex_storage m_src_vertices;
unsigned m_closed;
status_e m_status;
unsigned m_src_vertex;
};
}
#endif
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