private RigidBodyBase MakeBodyFromClosedStroke(Stroke stroke, Point[] vertices)
{
// Form a new body -- ellipse or polygon?
RigidBodyBase newbody = null;
Point[] points = stroke.GetPoints();
Ellipse elli = Ellipse.FromRegression(points);
if (!elli.IsEmpty && elli.IsFit(points))
{
dbg.WriteLine("new EllipticalBody");
newbody = new EllipticalBody();
EllipticalBody body = newbody as EllipticalBody;
body.CenterPoint = elli.Center;
body.MajorAxis = elli.MajorAxis;
body.MinorAxis = elli.MinorAxis;
body.Orientation = elli.Orientation;
// Close to circle? Snap to it.
if ((float)elli.MajorAxis / (float)elli.MinorAxis < 1.25)
{
int r = (elli.MajorAxis + elli.MinorAxis) / 2;
body.MajorAxis = body.MinorAxis = r;
body.Orientation = 0;
}
}
else
{
dbg.WriteLine("new PolygonalBody");
newbody = new PolygonalBody();
PolygonalBody body = newbody as PolygonalBody;
body.Vertices = vertices;
}
dbg.WriteLine(String.Format("Mass={0}, I={1}", newbody.Mass, newbody.I));
newbody.strokeid = stroke.Id;
doc.Bodies.Add(newbody);
return(newbody);
}
static MagicDocument CreateDocumentFixture()
{
MagicDocument doc = new MagicDocument();
RigidBodyBase body;
body = new EllipticalBody();
body.strokeid = 1;
doc.Bodies.Add(body);
body = new EllipticalBody();
body.strokeid = 2;
doc.Bodies.Add(body);
body = new PolygonalBody();
body.strokeid = 3;
doc.Bodies.Add(body);
((PolygonalBody)body).Vertices = new Point[] {
new Point(120,340),
new Point(560,340),
new Point(560,780),
new Point(120,780)
};
BindingMechanismBase mech;
mech = new RodMech();
mech.EndpointA = BodyRef.For((RigidBodyBase)doc.Bodies[0],Point.Empty);
mech.EndpointB = BodyRef.For((RigidBodyBase)doc.Bodies[1],Point.Empty);
doc.Mechanisms.Add(mech);
mech = new RopeMech();
mech.EndpointA = BodyRef.For((RigidBodyBase)doc.Bodies[1],Point.Empty);
mech.EndpointB = BodyRef.For((RigidBodyBase)doc.Bodies[2],Point.Empty);
doc.Mechanisms.Add(mech);
mech = new SpringMech();
mech.EndpointA = BodyRef.For((RigidBodyBase)doc.Bodies[2],Point.Empty);
mech.EndpointB = BodyRef.For((RigidBodyBase)doc.Bodies[0],Point.Empty);
doc.Mechanisms.Add(mech);
return doc;
}
static MagicDocument CreateDocumentFixture()
{
MagicDocument doc = new MagicDocument();
RigidBodyBase body;
body = new EllipticalBody();
body.strokeid = 1;
doc.Bodies.Add(body);
body = new EllipticalBody();
body.strokeid = 2;
doc.Bodies.Add(body);
body = new PolygonalBody();
body.strokeid = 3;
doc.Bodies.Add(body);
((PolygonalBody)body).Vertices = new Point[] {
new Point(120, 340),
new Point(560, 340),
new Point(560, 780),
new Point(120, 780)
};
BindingMechanismBase mech;
mech = new RodMech();
mech.EndpointA = BodyRef.For((RigidBodyBase)doc.Bodies[0], Point.Empty);
mech.EndpointB = BodyRef.For((RigidBodyBase)doc.Bodies[1], Point.Empty);
doc.Mechanisms.Add(mech);
mech = new RopeMech();
mech.EndpointA = BodyRef.For((RigidBodyBase)doc.Bodies[1], Point.Empty);
mech.EndpointB = BodyRef.For((RigidBodyBase)doc.Bodies[2], Point.Empty);
doc.Mechanisms.Add(mech);
mech = new SpringMech();
mech.EndpointA = BodyRef.For((RigidBodyBase)doc.Bodies[2], Point.Empty);
mech.EndpointB = BodyRef.For((RigidBodyBase)doc.Bodies[0], Point.Empty);
doc.Mechanisms.Add(mech);
return(doc);
}
internal override RigidBodyBase Clone(int newstrokeid)
{
// Instantiate a clone as the most-derived type.
EllipticalBody clone = (EllipticalBody)this.MemberwiseClone();
// Sever ties to the original's gp and rgn caches.
clone.gp = null;
clone.rgncache = null;
// Set the new stroke id.
clone.strokeid = newstrokeid;
// Move it down, and to the right a bit.
using (Matrix m = new Matrix())
{
m.Translate(1000f, 1000f);
clone.Transform(m);
}
return(clone);
}
private RigidBodyBase MakeBodyFromClosedStroke(Stroke stroke, Point[] vertices)
{
// Form a new body -- ellipse or polygon?
RigidBodyBase newbody = null;
Point[] points = stroke.GetPoints();
Ellipse elli = Ellipse.FromRegression(points);
if (!elli.IsEmpty && elli.IsFit(points))
{
dbg.WriteLine("new EllipticalBody");
newbody = new EllipticalBody();
EllipticalBody body = newbody as EllipticalBody;
body.CenterPoint = elli.Center;
body.MajorAxis = elli.MajorAxis;
body.MinorAxis = elli.MinorAxis;
body.Orientation = elli.Orientation;
// Close to circle? Snap to it.
if ((float)elli.MajorAxis/(float)elli.MinorAxis < 1.25)
{
int r = (elli.MajorAxis+elli.MinorAxis)/2;
body.MajorAxis = body.MinorAxis = r;
body.Orientation = 0;
}
}
else
{
dbg.WriteLine("new PolygonalBody");
newbody = new PolygonalBody();
PolygonalBody body = newbody as PolygonalBody;
body.Vertices = vertices;
}
dbg.WriteLine(String.Format("Mass={0}, I={1}",newbody.Mass,newbody.I));
newbody.strokeid = stroke.Id;
doc.Bodies.Add(newbody);
return newbody;
}
