protected override void layout_item(SceneUIElement e)
{
AxisAlignedBox2f box = Container.Bounds2D;
IBoxModelElement boxElem = e as IBoxModelElement;
IElementFrame eFramed = e as IElementFrame;
if (PinConstraints.ContainsKey(e))
{
Pin pin = PinConstraints[e];
// evaluate pin constraints in 2D box space
Vector2f SourcePos = pin.FromF();
Vector2f PinToPos = pin.ToF();
// map center of object into box space
// note: ignores orientation!
Frame3f objF = eFramed.GetObjectFrame();
Vector2f center2 = Region.To2DCoords(objF.Origin);
// construct new 2D position
Vector2f vOffset = SourcePos - center2;
Vector2f vNewPos = PinToPos - vOffset;
// map 2D position back to 3D surface and orient object
Frame3f frame = Region.From2DCoords(vNewPos, pin.fZ);
eFramed.SetObjectFrame(frame);
}
else if (boxElem != null)
{
// position object at center of box region
Frame3f frame = Region.From2DCoords(Vector2f.Zero, 0);
eFramed.SetObjectFrame(frame);
}
else
{
// do nothing?
}
}
protected override Vector3f layout_item(SceneUIElement e)
{
AxisAlignedBox2f box = Container.Bounds2D;
IBoxModelElement boxElem = e as IBoxModelElement;
IElementFrame eFramed = e as IElementFrame;
Vector3f vNewPos3 = Vector3f.Zero; // 2.5d center coordinate
if (PinConstraints.ContainsKey(e))
{
Pin pin = PinConstraints[e];
// [TODO] We have to xform the center of the object. But if we pin
// a corner, we want to enforce the corner position in 3D (eg on curved surf).
// Currently we pin the corner in 2D, but then conver that to a 2D-center
// and then use that position. So on curved surf, things overlap, etc
// evaluate pin constraints in 2D box space
Vector2f SourcePos = pin.FromF();
Vector2f PinToPos = pin.ToF();
// map center of object into box space
// note: ignores orientation!
//Frame3f objF = eFramed.GetObjectFrame();
//Vector2f center2 = Region.To2DCoords(objF.Origin);
Vector2f center2 = Vector2f.Zero;
// construct new 2D position
Vector2f vOffset = SourcePos - center2;
Vector2f vNewPos = PinToPos - vOffset;
vNewPos3 = new Vector3f(vNewPos.x, vNewPos.y, pin.fZ);
// map 2D position back to 3D surface and orient object
Frame3f frame = Region.From2DCoords(vNewPos, pin.fZ);
eFramed.SetObjectFrame(frame);
}
else if (boxElem != null)
{
Vector2f vNewPos = Vector2f.Zero;
vNewPos3 = new Vector3f(vNewPos.x, vNewPos.y, 0);
// position object at center of box region
Frame3f frame = Region.From2DCoords(vNewPos, 0);
eFramed.SetObjectFrame(frame);
}
else
{
// do nothing?
}
if (PostTransforms.ContainsKey(e))
{
foreach (var xform in PostTransforms[e])
{
xform(e);
}
}
return(vNewPos3);
}