private static bool EntityPoints(PicTypedDrawable entity, Vector2D pt, ref Vector2D pt0, ref Vector2D pt1)
{
PicSegment seg = entity as PicSegment;
if (null != seg)
{
if ((pt - seg.Pt0).GetLength() < (pt - seg.Pt1).GetLength())
{
pt0 = seg.Pt0; pt1 = seg.Pt1;
}
else
{
pt0 = seg.Pt1; pt1 = seg.Pt0;
}
}
PicArc arc = entity as PicArc;
if (null != arc)
{
if ((pt - arc.Source).GetLength() < (pt - arc.Target).GetLength())
{
pt0 = arc.Source; pt1 = arc.Target;
}
else
{
pt1 = arc.Target; pt0 = arc.Source;
}
}
return((pt0 - pt).GetLength() < _epsilon);
}
private static Vector2D OppositePoint(PicTypedDrawable entity, Vector2D pt)
{
PicSegment seg = entity as PicSegment;
if (null != seg)
{
if ((seg.Pt0 - pt).GetLength() < (seg.Pt1 - pt).GetLength())
{
return(seg.Pt1);
}
else
{
return(seg.Pt0);
}
}
PicArc arc = entity as PicArc;
if (null != arc)
{
if ((arc.Source - pt).GetLength() < (arc.Target - pt).GetLength())
{
return(arc.Target);
}
else
{
return(arc.Source);
}
}
return(Vector2D.Zero);
}
public static PicSegment CreateNewSegment(uint id, PicGraphics.LT lType, Vector2D pt0, Vector2D pt1)
{
PicSegment segment = new PicSegment(id, lType);
segment._pt0 = pt0;
segment._pt1 = pt1;
return segment;
}
public override PicEntity Clone(IEntityContainer factory)
{
PicSegment segment = new PicSegment(factory.GetNewEntityId(), LineType);
segment._pt0 = this._pt0;
segment._pt1 = this._pt1;
return segment;
}
private static double DistanceEntityPt(PicTypedDrawable entity, Vector2D pt)
{
PicSegment seg = entity as PicSegment;
if (null != seg)
{
return(Math.Min((seg.Pt0 - pt).GetLength(), (seg.Pt1 - pt).GetLength()));
}
PicArc arc = entity as PicArc;
if (null != arc)
{
return(Math.Min((arc.Source - pt).GetLength(), (arc.Target - pt).GetLength()));
}
return(0.0);
}
public void CreateEntities(PicFactory factory)
{
if (null == _entities)
{
return;
}
// show entities
for (int i = 0; i < Math.Min(_entities.Count, trackBarEntities.Value); ++i)
{
PicTypedDrawable entity = _entities[i];
PicSegment seg = entity as PicSegment;
if (null != seg)
{
factory.AddSegment(seg.LineType, seg.Group, seg.Layer, seg.Pt0, seg.Pt1);
}
PicArc arc = entity as PicArc;
if (null != arc)
{
factory.AddArc(arc.LineType, arc.Group, arc.Layer, arc.Center, arc.Radius, arc.AngleBeg, arc.AngleEnd);
}
}
}
/// <summary>
/// instantiate the tool with 2 segments and a radius
/// </summary>
/// <param name="seg0">first segment (order does not matter)</param>
/// <param name="seg1">second segment (order does not matter)</param>
/// <param name="radius"></param>
public PicToolRound(PicEntity seg0, PicEntity seg1, double radius)
{
_picSeg0 = seg0 as PicSegment;
_picSeg1 = seg1 as PicSegment;
_radius = radius;
}
