本文整理汇总了C++中SPCurve::backspace方法的典型用法代码示例。如果您正苦于以下问题：C++ SPCurve::backspace方法的具体用法？C++ SPCurve::backspace怎么用？C++ SPCurve::backspace使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SPCurve的用法示例。
在下文中一共展示了SPCurve::backspace方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: spdc_concat_colors_and_flush
//.........这里部分代码省略.........
// Red
if (dc->red_curve_is_valid) {
c->append_continuous(dc->red_curve, 0.0625);
}
dc->red_curve->reset();
sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(dc->red_bpath), NULL);
if (c->is_empty()) {
c->unref();
return;
}
// Step A - test, whether we ended on green anchor
if ( forceclosed || ( dc->green_anchor && dc->green_anchor->active ) ) {
// We hit green anchor, closing Green-Blue-Red
dc->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Path is closed."));
c->closepath_current();
// Closed path, just flush
spdc_flush_white(dc, c);
c->unref();
return;
}
// Step B - both start and end anchored to same curve
if ( dc->sa && dc->ea
&& ( dc->sa->curve == dc->ea->curve )
&& ( ( dc->sa != dc->ea )
|| dc->sa->curve->is_closed() ) )
{
// We hit bot start and end of single curve, closing paths
dc->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Closing path."));
if (dc->sa->start && !(dc->sa->curve->is_closed()) ) {
c = reverse_then_unref(c);
}
if(prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 1 ||
prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 2){
dc->overwrite_curve->append_continuous(c, 0.0625);
c->unref();
dc->overwrite_curve->closepath_current();
if(dc->sa){
dc->white_curves = g_slist_remove(dc->white_curves, dc->sa->curve);
dc->white_curves = g_slist_append(dc->white_curves, dc->overwrite_curve);
}
}else{
dc->sa->curve->append_continuous(c, 0.0625);
c->unref();
dc->sa->curve->closepath_current();
}
spdc_flush_white(dc, NULL);
return;
}
// Step C - test start
if (dc->sa) {
SPCurve *s = dc->sa->curve;
dc->white_curves = g_slist_remove(dc->white_curves, s);
if(prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 1 ||
prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 2){
s = dc->overwrite_curve;
}
if (dc->sa->start) {
s = reverse_then_unref(s);
}
s->append_continuous(c, 0.0625);
c->unref();
c = s;
} else /* Step D - test end */ if (dc->ea) {
SPCurve *e = dc->ea->curve;
dc->white_curves = g_slist_remove(dc->white_curves, e);
if (!dc->ea->start) {
e = reverse_then_unref(e);
}
if(prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 1 ||
prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 2){
e = reverse_then_unref(e);
Geom::CubicBezier const * cubic = dynamic_cast<Geom::CubicBezier const*>(&*e->last_segment());
SPCurve *lastSeg = new SPCurve();
if(cubic){
lastSeg->moveto((*cubic)[0]);
lastSeg->curveto((*cubic)[1],(*cubic)[3],(*cubic)[3]);
if( e->get_segment_count() == 1){
e = lastSeg;
}else{
//we eliminate the last segment
e->backspace();
//and we add it again with the recreation
e->append_continuous(lastSeg, 0.0625);
}
}
e = reverse_then_unref(e);
}
c->append_continuous(e, 0.0625);
e->unref();
}
spdc_flush_white(dc, c);
c->unref();
}