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//----------------------------------------------------------------------------
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// Anti-Grain Geometry - Version 2.3
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// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//----------------------------------------------------------------------------
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// Contact: mcseem@antigrain.com
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// mcseemagg@yahoo.com
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// http://www.antigrain.com
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//----------------------------------------------------------------------------
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// SVG path tokenizer.
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//----------------------------------------------------------------------------
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#ifndef AGG_SVG_PATH_TOKENIZER_INCLUDED
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#define AGG_SVG_PATH_TOKENIZER_INCLUDED
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#include "agg_svg_exception.h"
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// SVG path tokenizer.
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// agg::svg::path_tokenizer tok;
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// tok.set_str("M-122.304 84.285L-122.304 84.285 122.203 86.179 ");
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// printf("command='%c' number=%f\n",
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// tok.last_command(),
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// tok.last_number());
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// The tokenizer does all the routine job of parsing the SVG paths.
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// It doesn't recognize any graphical primitives, it even doesn't know
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// anything about pairs of coordinates (X,Y). The purpose of this class
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// is to tokenize the numeric values and commands. SVG paths can
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// have single numeric values for Horizontal or Vertical line_to commands
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// as well as more than two coordinates (4 or 6) for Bezier curves
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// depending on the semantics of the command.
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// The behaviour is as follows:
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// Each call to next() returns true if there's new command or new numeric
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// value or false when the path ends. How to interpret the result
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// depends on the sematics of the command. For example, command "C"
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// (cubic Bezier curve) implies 6 floating point numbers preceded by this
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// command. If the command assumes no arguments (like z or Z) the
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// the last_number() values won't change, that is, last_number() always
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// returns the last recognized numeric value, so does last_command().
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//===============================================================
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void set_path_str(const char* str);
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double next(char cmd);
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char last_command() const { return m_last_command; }
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double last_number() const { return m_last_number; }
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static void init_char_mask(char* mask, const char* char_set);
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bool contains(const char* mask, unsigned c) const
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return (mask[(c >> 3) & (256/8-1)] & (1 << (c & 7))) != 0;
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bool is_command(unsigned c) const
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return contains(m_commands_mask, c);
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bool is_numeric(unsigned c) const
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return contains(m_numeric_mask, c);
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bool is_separator(unsigned c) const
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return contains(m_separators_mask, c);
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char m_separators_mask[256/8];
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char m_commands_mask[256/8];
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char m_numeric_mask[256/8];
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double m_last_number;
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static const char s_commands[];
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static const char s_numeric[];
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static const char s_separators[];
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} //namespace mapserver
added
removed
renderers/agg/include/agg_svg_path_tokenizer.h
