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root |
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/* |
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* postscript interface |
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*/ |
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#include "config.h" |
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#include <sstream> |
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#include "interface.h" |
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#include "ps_int.h" |
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static const char ps_prolog[] = |
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"%!PS-Adobe-2.0\n" |
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"%%Creator: " PACKAGE " version " VERSION "\n" |
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"%%BeginProlog\n" |
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"\n" |
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"/rm { rmoveto } bind def\n" |
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"/rl { rlineto } bind def\n" |
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"/m { moveto } bind def\n" |
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"/l { lineto } bind def\n" |
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"/s { stroke } bind def\n" |
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"/w { setlinewidth } bind def\n" |
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"\n" |
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"/beginpage\n" |
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" {\n" |
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" clippath\n" |
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" pathbbox /py2 exch def /px2 exch def /py1 exch def /px1 exch def\n" |
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" /pw px2 px1 sub def /ph py2 py1 sub def\n" |
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" } bind def\n" |
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"\n" |
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"/endpage\n" |
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" {\n" |
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" showpage\n" |
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" } bind def\n" |
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"\n" |
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"/beginfig\n" |
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" {\n" |
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" /fy2 exch def /fx2 exch def /fy1 exch def /fx1 exch def\n" |
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" /fw fx2 fx1 sub def /fh fy2 fy1 sub def\n" |
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" px1 fx1 pw fw div mul sub py1 fy1 ph fh div mul sub translate\n" |
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" pw fw div ph fh div scale\n" |
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"% pw fw sub 0.5 mul ph fh sub 0.5 mul translate\n" |
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" newpath 0 0 moveto\n" |
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" } bind def\n" |
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"\n" |
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"/endfig\n" |
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" {\n" |
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" s\n" |
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" } bind def\n" |
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"\n" |
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"/bp\n" |
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" {\n" |
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" gsave newpath\n" |
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" } bind def\n" |
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"\n" |
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"/ep\n" |
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" {\n" |
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" closepath\n" |
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" fill\n" |
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" grestore\n" |
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" } bind def\n" |
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"\n" |
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"%%EndProlog\n" |
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; |
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static const char ps_epilog[] = |
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"%%Pages: 1\n" |
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"%%EOF\n" |
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; |
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ps_int::ps_int (ostream &out) t_no |
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: o(out) |
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{ |
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o << ps_prolog; |
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} |
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ps_int::~ps_int () t_no |
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{ |
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o << ps_epilog; |
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} |
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void ps_int::begin_fig () t_no |
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{ |
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x1 = 1e10; x2 = -x1; |
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y1 = 1e10; y2 = -y1; |
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last_pos = vec(0,0,0); |
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o << "%%Page:\n" |
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<< "beginpage\n"; |
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fig = new ostringstream; |
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} |
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void ps_int::end_fig () t_no |
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{ |
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o << x1-10 << " " << y1-10 << " " << x2+10 << " " << y2+10 << " beginfig\n"; |
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o << fig->str (); |
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delete fig; |
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o << "endfig\n" |
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<< "endpage\n" |
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<< "%%EndPage:\n"; |
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} |
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void ps_int::clip (const vec &v) t_no |
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{ |
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if (x1 > v[0]) x1 = v[0]; |
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if (y1 > v[1]) y1 = v[1]; |
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if (x2 < v[0]) x2 = v[0]; |
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if (y2 < v[1]) y2 = v[1]; |
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} |
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void ps_int::check_attrs (const attribute_set &attr) t_err |
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{ |
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*fig << "s 0 0 m\n"; |
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last_pos = vec(0,0,0); |
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*fig << attr("width", 1) << " w\n"; |
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} |
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void ps_int::segment (const point &a, const point &b) t_err |
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{ |
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check_attrs (a.attr); |
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if (last_pos[0] != a.v[0] || last_pos[1] != a.v[1]) |
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{ |
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clip (a.v); |
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*fig << a.v[0]-last_pos[0] << " " << a.v[1]-last_pos[1] << " rm\n"; |
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} |
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clip (b.v); |
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*fig << b.v[0]-a.v[0] << " " << b.v[1]-a.v[1] << " rl\n"; |
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last_pos = b.v; |
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} |
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void ps_int::object (const points &v) t_err |
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{ |
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char moveline = 'm'; |
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check_attrs (v.front().attr); |
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*fig << "bp "; |
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for(points::const_iterator i = v.begin (); i != v.end(); ++i) |
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{ |
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clip (i->v); |
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*fig << i->v[0] << " " << i->v[1] << " " << moveline << " "; |
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moveline = 'l'; |
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} |
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*fig << "ep\n"; |
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} |
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