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/* This file contains the internal paint_path() and paint_paths() methods,
which the public method endpath() is a wrapper around. */
#include "sys-defines.h"
#include "extern.h"
void
#ifdef _HAVE_PROTOS
_m_paint_path (S___(Plotter *_plotter))
#else
_m_paint_path (S___(_plotter))
S___(Plotter *_plotter;)
#endif
{
const plPath *path;
bool explicit_endpath, sync_miter_limit = false;
/* sync basic path attributes */
_m_set_attributes (R___(_plotter)
PL_ATTR_TRANSFORMATION_MATRIX
| PL_ATTR_PEN_COLOR | PL_ATTR_PEN_TYPE
| PL_ATTR_LINE_STYLE | PL_ATTR_LINE_WIDTH
| PL_ATTR_JOIN_STYLE | PL_ATTR_CAP_STYLE
| PL_ATTR_FILL_COLOR | PL_ATTR_FILL_TYPE
| PL_ATTR_FILL_RULE);
/* our one and only simple path to paint */
path = _plotter->drawstate->path;
if (_plotter->drawstate->join_type == JOIN_MITER
&& (path->type == PATH_SEGMENT_LIST || path->type == PATH_BOX))
/* path may have mitered juncture points */
sync_miter_limit = true;
if (sync_miter_limit)
_m_set_attributes (R___(_plotter) PL_ATTR_MITER_LIMIT);
if (path->type == PATH_SEGMENT_LIST)
explicit_endpath = true;
else
explicit_endpath = false;
/* emit metafile object-drawing instructions to draw the path; include a
preliminary syncing of the `orientation' attribute if relevant */
_m_paint_path_internal (R___(_plotter) path);
if (explicit_endpath)
{
_m_emit_op_code (R___(_plotter) O_ENDPATH);
_m_emit_terminator (S___(_plotter));
}
}
bool
#ifdef _HAVE_PROTOS
_m_paint_paths (S___(Plotter *_plotter))
#else
_m_paint_paths (S___(_plotter))
S___(Plotter *_plotter;)
#endif
{
const plPath *path;
bool sync_miter_limit = false;
int i;
/* sanity check */
if (_plotter->drawstate->num_paths == 0)
return true;
/* sync basic path attributes */
_m_set_attributes (R___(_plotter)
PL_ATTR_TRANSFORMATION_MATRIX
| PL_ATTR_PEN_COLOR | PL_ATTR_PEN_TYPE
| PL_ATTR_LINE_STYLE | PL_ATTR_LINE_WIDTH
| PL_ATTR_JOIN_STYLE | PL_ATTR_CAP_STYLE
| PL_ATTR_FILL_COLOR | PL_ATTR_FILL_TYPE
| PL_ATTR_FILL_RULE);
if (_plotter->drawstate->join_type == JOIN_MITER)
{
for (i = 0; i < _plotter->drawstate->num_paths; i++)
{
path = _plotter->drawstate->paths[i];
if (path->type == PATH_SEGMENT_LIST || path->type == PATH_BOX)
/* compound path may have mitered juncture points */
{
sync_miter_limit = true;
break;
}
}
}
if (sync_miter_limit)
_m_set_attributes (R___(_plotter) PL_ATTR_MITER_LIMIT);
/* loop over simple paths in compound path */
for (i = 0; i < _plotter->drawstate->num_paths; i++)
{
path = _plotter->drawstate->paths[i];
/* emit metafile object-drawing instructions to draw the path; first
sync `orientation' attribute, if relevant */
_m_paint_path_internal (R___(_plotter) path);
if (i < _plotter->drawstate->num_paths - 1)
{
_m_emit_op_code (R___(_plotter) O_ENDSUBPATH);
_m_emit_terminator (S___(_plotter));
}
}
if (_plotter->drawstate->paths[_plotter->drawstate->num_paths - 1]->type == PATH_SEGMENT_LIST)
/* append explicit (as opposed to implicit) endpath; if we didn't wish
to be clever, we'd append one even if the final simple path isn't a
segment list */
{
_m_emit_op_code (R___(_plotter) O_ENDPATH);
_m_emit_terminator (S___(_plotter));
}
/* succesfully painted compound path */
return true;
}
/* Internal routine, called by the MetaPlotter-specific versions of
paint_path() and paint_paths(). Besides emitting metafile instructions
to draw a path, it may emit an instruction to update the `orientation'
attribute, relevant to paths that are boxes/circles/ellipses. */
void
#ifdef _HAVE_PROTOS
_m_paint_path_internal (R___(Plotter *_plotter) const plPath *path)
#else
_m_paint_path_internal (R___(_plotter) path)
S___(Plotter *_plotter;)
const plPath *path;
#endif
{
if (path->type == PATH_BOX
|| path->type == PATH_CIRCLE || path->type == PATH_ELLIPSE)
/* sync orientation; orientation is stored in the path itself, not in
the drawing state */
{
int orientation = (path->clockwise ? -1 : 1);
if (_plotter->meta_orientation != orientation)
{
_m_emit_op_code (R___(_plotter) O_ORIENTATION);
_m_emit_integer (R___(_plotter) orientation);
_m_emit_terminator (S___(_plotter));
_plotter->meta_orientation = orientation;
}
}
switch ((int)path->type)
{
case (int)PATH_SEGMENT_LIST:
{
plPathSegment segment;
int i;
/* last-minute sanity check */
if (path->num_segments == 0)/* nothing to do */
break;
if (path->num_segments == 1) /* shouldn't happen */
break;
segment = path->segments[0]; /* initial moveto */
if (_plotter->meta_pos.x != segment.p.x
|| _plotter->meta_pos.y != segment.p.y)
{
_m_emit_op_code (R___(_plotter) O_FMOVE);
_m_emit_float (R___(_plotter) segment.p.x);
_m_emit_float (R___(_plotter) segment.p.y);
_m_emit_terminator (S___(_plotter));
_plotter->meta_pos = segment.p;
}
for (i = 1; i < path->num_segments; i++)
{
plPathSegment prev_segment;
prev_segment = segment;
segment = path->segments[i];
switch ((int)segment.type)
{
case (int)S_LINE:
_m_emit_op_code (R___(_plotter) O_FCONT);
_m_emit_float (R___(_plotter) segment.p.x);
_m_emit_float (R___(_plotter) segment.p.y);
_m_emit_terminator (S___(_plotter));
_plotter->meta_pos = segment.p;
break;
case (int)S_ARC:
_m_emit_op_code (R___(_plotter) O_FARC);
_m_emit_float (R___(_plotter) segment.pc.x);
_m_emit_float (R___(_plotter) segment.pc.y);
_m_emit_float (R___(_plotter) prev_segment.p.x);
_m_emit_float (R___(_plotter) prev_segment.p.y);
_m_emit_float (R___(_plotter) segment.p.x);
_m_emit_float (R___(_plotter) segment.p.y);
_m_emit_terminator (S___(_plotter));
_plotter->meta_pos = segment.p;
break;
case (int)S_ELLARC:
_m_emit_op_code (R___(_plotter) O_FELLARC);
_m_emit_float (R___(_plotter) segment.pc.x);
_m_emit_float (R___(_plotter) segment.pc.y);
_m_emit_float (R___(_plotter) prev_segment.p.x);
_m_emit_float (R___(_plotter) prev_segment.p.y);
_m_emit_float (R___(_plotter) segment.p.x);
_m_emit_float (R___(_plotter) segment.p.y);
_m_emit_terminator (S___(_plotter));
_plotter->meta_pos = segment.p;
break;
case (int)S_QUAD:
_m_emit_op_code (R___(_plotter) O_FBEZIER2);
_m_emit_float (R___(_plotter) prev_segment.p.x);
_m_emit_float (R___(_plotter) prev_segment.p.y);
_m_emit_float (R___(_plotter) segment.pc.x);
_m_emit_float (R___(_plotter) segment.pc.y);
_m_emit_float (R___(_plotter) segment.p.x);
_m_emit_float (R___(_plotter) segment.p.y);
_m_emit_terminator (S___(_plotter));
_plotter->meta_pos = segment.p;
break;
case (int)S_CUBIC:
_m_emit_op_code (R___(_plotter) O_FBEZIER3);
_m_emit_float (R___(_plotter) prev_segment.p.x);
_m_emit_float (R___(_plotter) prev_segment.p.y);
_m_emit_float (R___(_plotter) segment.pc.x);
_m_emit_float (R___(_plotter) segment.pc.y);
_m_emit_float (R___(_plotter) segment.pd.x);
_m_emit_float (R___(_plotter) segment.pd.y);
_m_emit_float (R___(_plotter) segment.p.x);
_m_emit_float (R___(_plotter) segment.p.y);
_m_emit_terminator (S___(_plotter));
_plotter->meta_pos = segment.p;
break;
default: /* shouldn't happen */
break;
}
}
}
break;
case (int)PATH_BOX:
{
_m_emit_op_code (R___(_plotter) O_FBOX);
_m_emit_float (R___(_plotter) path->p0.x);
_m_emit_float (R___(_plotter) path->p0.y);
_m_emit_float (R___(_plotter) path->p1.x);
_m_emit_float (R___(_plotter) path->p1.y);
_m_emit_terminator (S___(_plotter));
_plotter->meta_pos.x = 0.5 * (path->p0.x + path->p1.x);
_plotter->meta_pos.y = 0.5 * (path->p0.y + path->p1.y);
}
break;
case (int)PATH_CIRCLE:
{
_m_emit_op_code (R___(_plotter) O_FCIRCLE);
_m_emit_float (R___(_plotter) path->pc.x);
_m_emit_float (R___(_plotter) path->pc.y);
_m_emit_float (R___(_plotter) path->radius);
_m_emit_terminator (S___(_plotter));
_plotter->meta_pos = path->pc;
}
break;
case (int)PATH_ELLIPSE:
{
_m_emit_op_code (R___(_plotter) O_FELLIPSE);
_m_emit_float (R___(_plotter) path->pc.x);
_m_emit_float (R___(_plotter) path->pc.y);
_m_emit_float (R___(_plotter) path->rx);
_m_emit_float (R___(_plotter) path->ry);
_m_emit_float (R___(_plotter) path->angle);
_m_emit_terminator (S___(_plotter));
_plotter->meta_pos = path->pc;
}
break;
default: /* shouldn't happen */
break;
}
}
bool
#ifdef _HAVE_PROTOS
_m_path_is_flushable (S___(Plotter *_plotter))
#else
_m_path_is_flushable (S___(_plotter))
S___(Plotter *_plotter;)
#endif
{
return true;
}
void
#ifdef _HAVE_PROTOS
_m_maybe_prepaint_segments (R___(Plotter *_plotter) int prev_num_segments)
#else
_m_maybe_prepaint_segments (R___(_plotter) prev_num_segments)
S___(Plotter *_plotter;)
int prev_num_segments;
#endif
{
return;
}
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