本文整理汇总了C++中Piecewise::push_seg方法的典型用法代码示例。如果您正苦于以下问题：C++ Piecewise::push_seg方法的具体用法？C++ Piecewise::push_seg怎么用？C++ Piecewise::push_seg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Piecewise的用法示例。
在下文中一共展示了Piecewise::push_seg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: draw
void draw( cairo_t *cr, std::ostringstream *notify,
int width, int height, bool save )
{
Point p = ph.pos;
Point np = p;
std::vector<Point> nps;
cairo_set_line_width (cr, 0.3);
cairo_set_source_rgb(cr, 0,0,0);
switch ( choice )
{
case '1':
{
LineSegment seg(psh.pts[0], psh.pts[1]);
cairo_move_to(cr, psh.pts[0]);
cairo_curve(cr, seg);
double t = seg.nearestPoint(p);
np = seg.pointAt(t);
if ( toggles[0].on )
{
nps.push_back(np);
}
break;
}
case '2':
{
SVGEllipticalArc earc;
bool earc_constraints_satisfied = true;
try
{
earc.set(psh.pts[0], 200, 150, 0, true, true, psh.pts[1]);
}
catch( RangeError e )
{
earc_constraints_satisfied = false;
}
if ( earc_constraints_satisfied )
{
cairo_d2_sb(cr, earc.toSBasis());
if ( toggles[0].on )
{
std::vector<double> t = earc.allNearestPoints(p);
for ( unsigned int i = 0; i < t.size(); ++i )
nps.push_back(earc.pointAt(t[i]));
}
else
{
double t = earc.nearestPoint(p);
np = earc.pointAt(t);
}
}
break;
}
case '3':
{
D2<SBasis> A = psh.asBezier();
cairo_d2_sb(cr, A);
if ( toggles[0].on )
{
std::vector<double> t = Geom::all_nearest_points(p, A);
for ( unsigned int i = 0; i < t.size(); ++i )
nps.push_back(A(t[i]));
}
else
{
double t = nearest_point(p, A);
np = A(t);
}
break;
}
case '4':
{
D2<SBasis> A = handles_to_sbasis(psh.pts.begin(), 3);
D2<SBasis> B = handles_to_sbasis(psh.pts.begin() + 3, 3);
D2<SBasis> C = handles_to_sbasis(psh.pts.begin() + 6, 3);
D2<SBasis> D = handles_to_sbasis(psh.pts.begin() + 9, 3);
cairo_d2_sb(cr, A);
cairo_d2_sb(cr, B);
cairo_d2_sb(cr, C);
cairo_d2_sb(cr, D);
Piecewise< D2<SBasis> > pwc;
pwc.push_cut(0);
pwc.push_seg(A);
pwc.push_cut(0.25);
pwc.push_seg(B);
pwc.push_cut(0.50);
pwc.push_seg(C);
pwc.push_cut(0.75);
pwc.push_seg(D);
pwc.push_cut(1);
if ( toggles[0].on )
{
std::vector<double> t = Geom::all_nearest_points(p, pwc);
for ( unsigned int i = 0; i < t.size(); ++i )
nps.push_back(pwc(t[i]));
}
else
{
double t = Geom::nearest_point(p, pwc);
//.........这里部分代码省略.........