/// <summary>
/// Initializes a new instance of the <see cref="StraightLeg"/> class that corresponds to
/// the end of a face on another leg (for use when breaking a leg).
/// </summary>
/// <param name="face">The face on the other leg</param>
/// <param name="startIndex">The array index of the first span that should be copied.</param>
StraightLeg(LegFace face, int startIndex)
: base(face, startIndex)
{
// Stick in a (clockwise) angle of 180 degrees.
m_StartAngle = Math.PI;
m_IsDeflection = false;
}
/// <summary>
/// Obtains line sections for a specific face in this path.
/// </summary>
/// <param name="face">The face of interest</param>
/// <returns>The corresponding sections</returns>
internal ILineGeometry[] GetSections(LegFace face)
{
EnsureAdjusted();
// Initialize position to the start of the path.
IPosition p = new Position(m_From);
// Initial bearing is whatever the rotation is.
double bearing = m_Rotation;
// Get the position at the start of the required leg.
foreach (Leg leg in m_Legs)
{
if (leg == face.Leg)
{
break;
}
leg.Project(ref p, ref bearing, m_ScaleFactor);
}
// We've now got the position at the start of the required leg, and the bearing of the previous leg.
// If the leg we actually want if a straight leg (or an extra leg layered on a straight), add on any
// initial angle.
StraightLeg sLeg = (face.Leg as StraightLeg);
if (sLeg != null)
{
bearing = sLeg.AddStartAngle(bearing);
}
return(face.Leg.GetSpanSections(p, bearing, m_ScaleFactor, face.Spans));
}
/// <summary>
/// Initializes a new instance of the <see cref="StraightLeg"/> class that corresponds to
/// the end of a face on another leg (for use when breaking a leg).
/// </summary>
/// <param name="face">The face on the other leg</param>
/// <param name="startIndex">The array index of the first span that should be copied.</param>
StraightLeg(LegFace face, int startIndex)
: base(face, startIndex)
{
// Stick in a (clockwise) angle of 180 degrees.
m_StartAngle = Math.PI;
m_IsDeflection = false;
}
/// <summary>
/// Initializes a new instance of the <see cref="LegFace"/> class
/// using the data read from persistent storage.
/// </summary>
/// <param name="editDeserializer">The mechanism for reading back content.</param>
internal LegFace(EditDeserializer editDeserializer)
{
// Only connection paths should generate LegFace instances
PathOperation op = (editDeserializer.CurrentEdit as PathOperation);
if (op == null)
{
throw new ApplicationException("Unexpected creating edit for a leg face");
}
this.Sequence = editDeserializer.ReadInternalId(DataField.Id);
if (editDeserializer.IsNextField(DataField.PrimaryFaceId))
{
InternalIdValue primaryFaceId = editDeserializer.ReadInternalId(DataField.PrimaryFaceId);
LegFace face = op.FindFace(primaryFaceId);
if (face == null)
{
throw new ApplicationException("Cannot locate primary face " + primaryFaceId);
}
Leg = face.Leg;
Leg.AlternateFace = this;
}
else
{
// This should never happen. Primary faces are not serialized using the LegFace
// class (we only use LegFace as part of a PathOperation to simplify import of
// extra legs from old CEdit files).
throw new ApplicationException();
}
// Convert the data entry string into observed spans
string entryString = editDeserializer.ReadString(DataField.EntryString);
DistanceUnit defaultEntryUnit = EditingController.Current.EntryUnit;
Distance[] dists = LineSubdivisionFace.GetDistances(entryString, defaultEntryUnit, false);
m_Spans = new SpanInfo[dists.Length];
for (int i = 0; i < m_Spans.Length; i++)
{
m_Spans[i] = new SpanInfo()
{
ObservedDistance = dists[i]
};
}
}
/// <summary>
/// Initializes a new instance of the <see cref="LegFace"/> class.
/// </summary>
/// <param name="leg">The leg this face relates to.</param>
/// <param name="copy">The face to copy from.</param>
/// <param name="startIndex">The start index of the first span to copy</param>
internal LegFace(Leg leg, LegFace copy, int startIndex)
{
this.Leg = leg;
int nSpan = copy.m_Spans.Length - startIndex;
if (nSpan <= 0)
{
throw new IndexOutOfRangeException();
}
// Perform shallow copy
m_Spans = new SpanInfo[nSpan];
Array.Copy(copy.m_Spans, startIndex, m_Spans, 0, nSpan);
}
/// <summary>
/// Initializes a new instance of the <see cref="LegFace"/> class.
/// </summary>
/// <param name="leg">The leg this face relates to.</param>
/// <param name="copy">The face to copy from.</param>
/// <param name="startIndex">The start index of the first span to copy</param>
internal LegFace(Leg leg, LegFace copy, int startIndex)
{
this.Leg = leg;
int nSpan = copy.m_Spans.Length - startIndex;
if (nSpan <= 0)
throw new IndexOutOfRangeException();
// Perform shallow copy
m_Spans = new SpanInfo[nSpan];
Array.Copy(copy.m_Spans, startIndex, m_Spans, 0, nSpan);
}
/// <summary>
/// Initializes a new instance of the <see cref="Leg"/> class that corresponds to
/// the end of another leg face (for use when breaking a straight leg).
/// </summary>
/// <param name="face">The face on the other leg</param>
/// <param name="startIndex">The array index of the first span that should be copied.</param>
protected Leg(LegFace face, int startIndex)
{
m_FirstSide = new LegFace(this, face, startIndex);
m_OtherSide = null;
}
protected Leg(int nspan)
{
m_FirstSide = new LegFace(this, nspan);
m_OtherSide = null;
}
/// <summary>
/// Obtains line sections for a specific face in this path.
/// </summary>
/// <param name="face">The face of interest</param>
/// <returns>The corresponding sections</returns>
internal ILineGeometry[] GetSections(LegFace face)
{
EnsureAdjusted();
// Initialize position to the start of the path.
IPosition p = new Position(m_From);
// Initial bearing is whatever the rotation is.
double bearing = m_Rotation;
// Get the position at the start of the required leg.
foreach (Leg leg in m_Legs)
{
if (leg == face.Leg)
break;
leg.Project(ref p, ref bearing, m_ScaleFactor);
}
// We've now got the position at the start of the required leg, and the bearing of the previous leg.
// If the leg we actually want if a straight leg (or an extra leg layered on a straight), add on any
// initial angle.
StraightLeg sLeg = (face.Leg as StraightLeg);
if (sLeg != null)
bearing = sLeg.AddStartAngle(bearing);
return face.Leg.GetSpanSections(p, bearing, m_ScaleFactor, face.Spans);
}
/// <summary>
/// Initializes a new instance of the <see cref="Leg"/> class that corresponds to
/// the end of another leg face (for use when breaking a straight leg).
/// </summary>
/// <param name="face">The face on the other leg</param>
/// <param name="startIndex">The array index of the first span that should be copied.</param>
protected Leg(LegFace face, int startIndex)
{
m_FirstSide = new LegFace(this, face, startIndex);
m_OtherSide = null;
}
protected Leg(int nspan)
{
m_FirstSide = new LegFace(this, nspan);
m_OtherSide = null;
}
