void Dasher::Line(const Pointf& p)
{
	if(sum == 0) {
		PutLine(p);
		return;
	}
	Pointf v = p - p0;
	double len = Length(v);
	double pos = 0;
	while(pos + rem < len) {
		pos += rem;
		Put(pos / len * v + p0);
		flag = !flag;
		rem = (*pattern)[patterni];
		patterni = (patterni + 1) % pattern->GetCount();
	}
	rem -= len - pos;
	Put(p);
	p0 = p;
}