public CH0805()
{
Factory <Dog> doMaker = MakeDog;
//Factory<Animal> animalMaker = doMaker;
//Factory<Dog>和Factory<Animal>不是同一个对象，不存在继承关系
FactoryOut <Dog> dog = MakeDog;
FactoryOut <Animal> animal = dog; //协变
Console.WriteLine(animal().Legs.ToString());
FactoryIn <Animal> animalIn = Animal;
FactoryIn <Dog> dogIn = animalIn; //逆变
dogIn(new Dog());
}
public override void ProcessEntity(PicEntity entity)
{
if (entity is PicPoint point)
{
FactoryOut.AddPoint(point.LineType, point.Group, point.Layer, Multiplicator * point.Coord);
}
else if (entity is PicSegment seg)
{
FactoryOut.AddSegment(seg.LineType, seg.Group, seg.Layer, Multiplicator * seg.Pt0, Multiplicator * seg.Pt1);
}
else if (entity is PicArc arc)
{
FactoryOut.AddArc(arc.LineType, arc.Group, arc.Layer, Multiplicator * arc.Center, Multiplicator * arc.Radius, arc.AngleBeg, arc.AngleEnd);
}
else if (entity is PicNurb nurb)
{
FactoryOut.AddNurb(nurb.LineType, nurb.Group, nurb.Layer);
}
else if (entity is PicCotationDistance cotDist)
{
PicCotation.CotType eCotType = PicCotation.CotType.COT_DISTANCE;;
if (entity is PicCotationDistance)
{
eCotType = PicCotation.CotType.COT_DISTANCE;
}
else if (entity is PicCotationHorizontal)
{
eCotType = PicCotation.CotType.COT_HORIZONTAL;
}
else if (entity is PicCotationVertical)
{
eCotType = PicCotation.CotType.COT_VERTICAL;
}
FactoryOut.AddCotation(eCotType, cotDist.Group, cotDist.Layer, Multiplicator * cotDist.Pt0, Multiplicator * cotDist.Pt1, Multiplicator * cotDist.Offset, cotDist.Text, 1);
}
}