/// <summary>
/// Moves, scales, and/or rotates the current entity given a 3x3 transformation matrix and a translation vector.
/// </summary>
/// <param name="transformation">Transformation matrix.</param>
/// <param name="translation">Translation vector.</param>
/// <remarks>
/// Non-uniform scaling is not supported for multilines.
/// Explode the entity and, in case round end caps has been applied, convert the arcs into ellipse arcs and transform them instead.
/// </remarks>
public override void TransformBy(Matrix3 transformation, Vector3 translation)
{
Vector3 newNormal;
double newElevation;
double newScale;
newNormal = transformation * Normal;
newElevation = Elevation;
newScale = newNormal.Modulus();
Matrix3 transOW = MathHelper.ArbitraryAxis(Normal);
Matrix3 transWO = MathHelper.ArbitraryAxis(newNormal).Transpose();
for (int i = 0; i < Vertexes.Count; i++)
{
Vector2 position;
Vector2 direction;
Vector2 mitter;
Vector3 v = transOW * new Vector3(Vertexes[i].Position.X, Vertexes[i].Position.Y, Elevation);
v = transformation * v + translation;
v = transWO * v;
position = new Vector2(v.X, v.Y);
newElevation = v.Z;
v = transOW * new Vector3(Vertexes[i].Direction.X, Vertexes[i].Direction.Y, Elevation);
v = transformation * v;
v = transWO * v;
direction = new Vector2(v.X, v.Y);
v = transOW * new Vector3(Vertexes[i].Miter.X, Vertexes[i].Miter.Y, Elevation);
v = transformation * v;
v = transWO * v;
mitter = new Vector2(v.X, v.Y);
List <double>[] newDistances = new List <double> [style.Elements.Count];
for (int j = 0; j < style.Elements.Count; j++)
{
newDistances[j] = new List <double>();
for (int k = 0; k < Vertexes[i].Distances[j].Count; k++)
{
newDistances[j].Add(Vertexes[i].Distances[j][k] * newScale);
}
}
vertexes[i] = new MLineVertex(position, direction, mitter, newDistances);
}
Elevation = newElevation;
Normal = newNormal;
Scale *= newScale;
}
/// <summary>
/// Decompose the actual multiline in its internal entities, <see cref="Line">lines</see> and <see cref="Arc">arcs</see>.
/// </summary>
/// <returns>A list of <see cref="Line">lines</see> and <see cref="Arc">arcs</see> that made up the multiline.</returns>
public List <EntityObject> Explode()
{
List <EntityObject> entities = new List <EntityObject>();
Matrix3 transformation = MathHelper.ArbitraryAxis(this.Normal);
// precomputed points at mline vertexes for start and end caps calculations
Vector2[][] cornerVextexes = new Vector2[this.vertexes.Count][];
for (int i = 0; i < this.vertexes.Count; i++)
{
MLineVertex vertex = this.vertexes[i];
MLineVertex nextVertex;
if (this.IsClosed && i == this.vertexes.Count - 1)
{
nextVertex = this.vertexes[0];
}
else if (!this.IsClosed && i == this.vertexes.Count - 1)
{
continue;
}
else
{
nextVertex = this.vertexes[i + 1];
cornerVextexes[i + 1] = new Vector2[this.style.Elements.Count];
}
cornerVextexes[i] = new Vector2[this.style.Elements.Count];
for (int j = 0; j < this.style.Elements.Count; j++)
{
if (vertex.Distances[j].Count == 0)
{
continue;
}
Vector2 refStart = vertex.Position + vertex.Miter * vertex.Distances[j][0];
cornerVextexes[i][j] = refStart;
for (int k = 1; k < vertex.Distances[j].Count; k++)
{
Vector2 start = refStart + vertex.Direction * vertex.Distances[j][k];
Vector2 end;
if (k >= vertex.Distances[j].Count - 1)
{
end = nextVertex.Position + nextVertex.Miter * nextVertex.Distances[j][0];
if (!this.IsClosed)
{
cornerVextexes[i + 1][j] = end;
}
}
else
{
end = refStart + vertex.Direction * vertex.Distances[j][k + 1];
k++; // skip next segment it is a blank space
}
Line line = this.CreateLine(start, end, this.style.Elements[j].Color, this.style.Elements[j].Linetype);
line.TransformBy(transformation, Vector3.Zero);
entities.Add(line);
}
}
}
if (this.style.Flags.HasFlag(MLineStyleFlags.DisplayJoints))
{
AciColor color1 = this.style.Elements[0].Color;
AciColor color2 = this.style.Elements[this.style.Elements.Count - 1].Color;
Linetype linetype1 = this.style.Elements[0].Linetype;
Linetype linetype2 = this.style.Elements[this.style.Elements.Count - 1].Linetype;
for (int i = 0; i < cornerVextexes.Length; i++)
{
if (!this.IsClosed && (i == 0 || i == cornerVextexes.Length - 1))
{
continue;
}
Vector2 start = cornerVextexes[i][0];
Vector2 end = cornerVextexes[i][cornerVextexes[0].Length - 1];
entities.AddRange(this.CreateSquareCap(start, end, transformation, color1, linetype1, color2, linetype2));
}
}
// when the mline is closed there are no caps
if (this.IsClosed)
{
return(entities);
}
if (!this.NoStartCaps)
{
if (this.style.Flags.HasFlag(MLineStyleFlags.StartRoundCap))
{
AciColor color1 = this.style.Elements[0].Color;
AciColor color2 = this.style.Elements[this.style.Elements.Count - 1].Color;
Linetype linetype1 = this.style.Elements[0].Linetype;
Linetype linetype2 = this.style.Elements[this.style.Elements.Count - 1].Linetype;
Vector2 start = cornerVextexes[0][0];
Vector2 end = cornerVextexes[0][cornerVextexes[0].Length - 1];
entities.AddRange(this.scale >= 0 ?
this.CreateRoundCap(start, end, transformation, color1, linetype1, color2, linetype2) :
this.CreateRoundCap(end, start, transformation, color2, linetype2, color1, linetype1));
}
if (this.style.Flags.HasFlag(MLineStyleFlags.StartInnerArcsCap))
{
int j = (int)(this.style.Elements.Count / 2.0); // Math.Floor
for (int i = 1; i < j; i++)
{
AciColor color1 = this.style.Elements[i].Color;
AciColor color2 = this.style.Elements[this.style.Elements.Count - 1 - i].Color;
Linetype linetype1 = this.style.Elements[i].Linetype;
Linetype linetype2 = this.style.Elements[this.style.Elements.Count - 1 - i].Linetype;
Vector2 start = cornerVextexes[0][i];
Vector2 end = cornerVextexes[0][cornerVextexes[0].Length - 1 - i];
entities.AddRange(this.scale >= 0 ?
this.CreateRoundCap(start, end, transformation, color1, linetype1, color2, linetype2) :
this.CreateRoundCap(end, start, transformation, color2, linetype2, color1, linetype1));
}
}
if (this.style.Flags.HasFlag(MLineStyleFlags.StartSquareCap))
{
AciColor color1 = this.style.Elements[0].Color;
AciColor color2 = this.style.Elements[this.style.Elements.Count - 1].Color;
Linetype linetype1 = this.style.Elements[0].Linetype;
Linetype linetype2 = this.style.Elements[this.style.Elements.Count - 1].Linetype;
Vector2 start = cornerVextexes[0][0];
Vector2 end = cornerVextexes[0][cornerVextexes[0].Length - 1];
entities.AddRange(this.CreateSquareCap(start, end, transformation, color1, linetype1, color2, linetype2));
}
}
if (!this.NoEndCaps)
{
if (this.style.Flags.HasFlag(MLineStyleFlags.EndRoundCap))
{
AciColor color1 = this.style.Elements[this.style.Elements.Count - 1].Color;
AciColor color2 = this.style.Elements[0].Color;
Linetype linetype1 = this.style.Elements[this.style.Elements.Count - 1].Linetype;
Linetype linetype2 = this.style.Elements[0].Linetype;
Vector2 start = cornerVextexes[this.vertexes.Count - 1][cornerVextexes[0].Length - 1];
Vector2 end = cornerVextexes[this.vertexes.Count - 1][0];
entities.AddRange(this.scale >= 0 ?
this.CreateRoundCap(start, end, transformation, color1, linetype1, color2, linetype2) :
this.CreateRoundCap(end, start, transformation, color2, linetype2, color1, linetype1));
}
if (this.style.Flags.HasFlag(MLineStyleFlags.EndInnerArcsCap))
{
int j = (int)(this.style.Elements.Count / 2.0); // Math.Floor
for (int i = 1; i < j; i++)
{
AciColor color1 = this.style.Elements[this.style.Elements.Count - 1 - i].Color;
AciColor color2 = this.style.Elements[i].Color;
Linetype linetype1 = this.style.Elements[this.style.Elements.Count - 1 - i].Linetype;
Linetype linetype2 = this.style.Elements[i].Linetype;
Vector2 start = cornerVextexes[this.vertexes.Count - 1][cornerVextexes[0].Length - 1 - i];
Vector2 end = cornerVextexes[this.vertexes.Count - 1][i];
entities.AddRange(this.scale >= 0 ?
this.CreateRoundCap(start, end, transformation, color1, linetype1, color2, linetype2) :
this.CreateRoundCap(end, start, transformation, color2, linetype2, color1, linetype1));
}
}
if (this.style.Flags.HasFlag(MLineStyleFlags.EndSquareCap))
{
AciColor color1 = this.style.Elements[this.style.Elements.Count - 1].Color;
AciColor color2 = this.style.Elements[0].Color;
Linetype linetype1 = this.style.Elements[this.style.Elements.Count - 1].Linetype;
Linetype linetype2 = this.style.Elements[0].Linetype;
Vector2 start = cornerVextexes[this.vertexes.Count - 1][cornerVextexes[0].Length - 1];
Vector2 end = cornerVextexes[this.vertexes.Count - 1][0];
entities.AddRange(this.CreateSquareCap(start, end, transformation, color1, linetype1, color2, linetype2));
}
}
return(entities);
}
/// <summary>
/// Calculates the internal information of the multiline vertexes.
/// </summary>
/// <remarks>
/// <para>
/// This function needs to be called manually when any modification is done that affects the final shape of the multiline.
/// </para>
/// <para>
/// If the vertex distance list needs to be edited to represent trimmed multilines this function needs to be called prior to any modification.
/// It will calculate the minimum information needed to build a correct multiline.
/// </para>
/// </remarks>
public void Update()
{
if (vertexes.Count == 0)
{
return;
}
double reference = 0.0;
switch (justification)
{
case MLineJustification.Top:
reference = -style.Elements[0].Offset;
break;
case MLineJustification.Zero:
reference = 0.0;
break;
case MLineJustification.Bottom:
reference = -style.Elements[style.Elements.Count - 1].Offset;
break;
}
Vector2 prevDir;
if (vertexes[0].Position.Equals(vertexes[vertexes.Count - 1].Position))
{
prevDir = Vector2.UnitY;
}
else
{
prevDir = vertexes[0].Position - vertexes[vertexes.Count - 1].Position;
prevDir.Normalize();
}
for (int i = 0; i < vertexes.Count; i++)
{
Vector2 position = vertexes[i].Position;
Vector2 mitter;
Vector2 dir;
if (i == 0)
{
if (vertexes[i + 1].Position.Equals(position))
{
dir = Vector2.UnitY;
}
else
{
dir = vertexes[i + 1].Position - position;
dir.Normalize();
}
if (IsClosed)
{
mitter = prevDir - dir;
mitter.Normalize();
}
else
{
mitter = MathHelper.Transform(dir, style.StartAngle * MathHelper.DegToRad, CoordinateSystem.Object, CoordinateSystem.World);
mitter.Normalize();
}
}
else if (i + 1 == vertexes.Count)
{
if (IsClosed)
{
if (vertexes[0].Position.Equals(position))
{
dir = Vector2.UnitY;
}
else
{
dir = vertexes[0].Position - position;
dir.Normalize();
}
mitter = prevDir - dir;
mitter.Normalize();
}
else
{
dir = prevDir;
mitter = MathHelper.Transform(dir, style.EndAngle * MathHelper.DegToRad, CoordinateSystem.Object, CoordinateSystem.World);
mitter.Normalize();
}
}
else
{
if (vertexes[i + 1].Position.Equals(position))
{
dir = Vector2.UnitY;
}
else
{
dir = vertexes[i + 1].Position - position;
dir.Normalize();
}
mitter = prevDir - dir;
mitter.Normalize();
}
prevDir = dir;
List <double>[] distances = new List <double> [style.Elements.Count];
double angleMitter = Vector2.Angle(mitter);
double angleDir = Vector2.Angle(dir);
double cos = Math.Cos(angleMitter + (MathHelper.HalfPI - angleDir));
for (int j = 0; j < style.Elements.Count; j++)
{
double distance = (style.Elements[j].Offset + reference) / cos;
distances[j] = new List <double>
{
distance *scale,
0.0
};
}
vertexes[i] = new MLineVertex(position, dir, -mitter, distances);
}
}
/// <summary>
/// Decompose the actual multiline in its internal entities, <see cref="Line">lines</see> and <see cref="Arc">arcs</see>.
/// </summary>
/// <returns>A list of <see cref="Line">lines</see> and <see cref="Arc">arcs</see> that made up the multiline.</returns>
/// <exception cref="InvalidOperationException">An exception will be thrown if the number of distances for a given MLineStyleElement is not an even number.</exception>
public List <EntityObject> Explode()
{
Matrix3 transformation = MathHelper.ArbitraryAxis(Normal);
List <EntityObject> entities = new List <EntityObject>();
// precomputed points at mline vertexes for start and end caps calculations
Vector2[][] cornerVextexes = new Vector2[vertexes.Count][];
for (int i = 0; i < vertexes.Count; i++)
{
MLineVertex vertex = vertexes[i];
MLineVertex nextVertex;
if (IsClosed && i == vertexes.Count - 1)
{
nextVertex = vertexes[0];
}
else if (!IsClosed && i == vertexes.Count - 1)
{
continue;
}
else
{
nextVertex = vertexes[i + 1];
cornerVextexes[i + 1] = new Vector2[style.Elements.Count];
}
cornerVextexes[i] = new Vector2[style.Elements.Count];
for (int j = 0; j < style.Elements.Count; j++)
{
if (style.Elements.Count % 2 != 0)
{
throw new InvalidOperationException("The number of distances for a given MLineStyleElement must be an even number.");
}
Vector2 refStart = vertex.Position + vertex.Miter * vertex.Distances[j][0];
cornerVextexes[i][j] = refStart;
for (int k = 1; k < vertex.Distances[j].Count; k++)
{
Vector2 start = refStart + vertex.Direction * vertex.Distances[j][k];
Vector2 end;
if (k >= vertex.Distances[j].Count - 1)
{
end = nextVertex.Position + nextVertex.Miter * nextVertex.Distances[j][0];
if (!IsClosed)
{
cornerVextexes[i + 1][j] = end;
}
}
else
{
end = refStart + vertex.Direction * vertex.Distances[j][k + 1];
k++; // skip next segment it is a blank space
}
Line line = CreateLine(start, end, style.Elements[j].Color, style.Elements[j].Linetype);
line.TransformBy(transformation, Vector3.Zero);
entities.Add(line);
}
}
}
if (style.Flags.HasFlag(MLineStyleFlags.DisplayJoints))
{
AciColor color1 = style.Elements[0].Color;
AciColor color2 = style.Elements[style.Elements.Count - 1].Color;
Linetype linetype1 = style.Elements[0].Linetype;
Linetype linetype2 = style.Elements[style.Elements.Count - 1].Linetype;
bool trim = !color1.Equals(color2) || !linetype1.Equals(linetype2);
for (int i = 0; i < cornerVextexes.Length; i++)
{
if (!IsClosed && (i == 0 || i == cornerVextexes.Length - 1))
{
continue;
}
Vector2 start = cornerVextexes[i][0];
Vector2 end = cornerVextexes[i][cornerVextexes[0].Length - 1];
Vector2 midPoint = Vector2.MidPoint(start, end);
if (trim)
{
Line line1 = CreateLine(start, midPoint, color1, linetype1);
line1.TransformBy(transformation, Vector3.Zero);
entities.Add(line1);
Line line2 = CreateLine(midPoint, end, color2, linetype2);
line2.TransformBy(transformation, Vector3.Zero);
entities.Add(line2);
}
else
{
Line line = CreateLine(start, end, color1, linetype1);
line.TransformBy(transformation, Vector3.Zero);
entities.Add(line);
}
}
}
// when the mline is closed there are no caps
if (IsClosed)
{
return(entities);
}
if (!NoStartCaps)
{
if (style.Flags.HasFlag(MLineStyleFlags.StartRoundCap))
{
AciColor color1 = style.Elements[0].Color;
AciColor color2 = style.Elements[style.Elements.Count - 1].Color;
Linetype linetype1 = style.Elements[0].Linetype;
Linetype linetype2 = style.Elements[style.Elements.Count - 1].Linetype;
bool trim = !color1.Equals(color2) || !linetype1.Equals(linetype2);
Vector2 center = Vector2.MidPoint(cornerVextexes[0][0], cornerVextexes[0][cornerVextexes.Length - 1]);
Vector2 start = cornerVextexes[0][0];
//Vector2 end = cornerVextexes[0][cornerVextexes[0].Length - 1];
double startAngle = Vector2.Angle(start - center) * MathHelper.RadToDeg;
//double endAngle = Vector2.Angle(end - center) * MathHelper.RadToDeg;
double endAngle = startAngle + 180.0;
double radius = (start - center).Modulus();
if (trim)
{
double midAngle = startAngle + 90.0;
Arc arc1 = CreateArc(center, radius, startAngle, midAngle, color1, linetype1);
arc1.TransformBy(transformation, Vector3.Zero);
entities.Add(arc1);
Arc arc2 = CreateArc(center, radius, midAngle, endAngle, color2, linetype2);
arc2.TransformBy(transformation, Vector3.Zero);
entities.Add(arc2);
}
else
{
Arc arc = CreateArc(center, radius, startAngle, endAngle, color1, linetype1);
arc.TransformBy(transformation, Vector3.Zero);
entities.Add(arc);
}
}
if (style.Flags.HasFlag(MLineStyleFlags.StartInnerArcsCap))
{
Vector2 center = Vector2.MidPoint(cornerVextexes[0][0], cornerVextexes[0][cornerVextexes.Length - 1]);;
int j = (int)Math.Floor(style.Elements.Count / 2.0);
for (int i = 1; i < j; i++)
{
AciColor color1 = style.Elements[i].Color;
AciColor color2 = style.Elements[style.Elements.Count - 1 - i].Color;
Linetype linetype1 = style.Elements[i].Linetype;
Linetype linetype2 = style.Elements[style.Elements.Count - 1 - i].Linetype;
bool trim = !color1.Equals(color2) || !linetype1.Equals(linetype2);
Vector2 start = cornerVextexes[0][i];
//Vector2 end = cornerVextexes[0][cornerVextexes[0].Length - 1 - i];
double startAngle = Vector2.Angle(start - center) * MathHelper.RadToDeg;
//double endAngle = Vector2.Angle(end - center) * MathHelper.RadToDeg;
double endAngle = startAngle + 180.0;
double radius = (start - center).Modulus();
if (trim)
{
double midAngle = startAngle + 90.0;
Arc arc1 = CreateArc(center, radius, startAngle, midAngle, color1, linetype1);
arc1.TransformBy(transformation, Vector3.Zero);
entities.Add(arc1);
Arc arc2 = CreateArc(center, radius, midAngle, endAngle, color2, linetype2);
arc2.TransformBy(transformation, Vector3.Zero);
entities.Add(arc2);
}
else
{
Arc arc = CreateArc(center, radius, startAngle, endAngle, color1, linetype1);
arc.TransformBy(transformation, Vector3.Zero);
entities.Add(arc);
}
}
}
if (style.Flags.HasFlag(MLineStyleFlags.StartSquareCap))
{
AciColor color1 = style.Elements[0].Color;
AciColor color2 = style.Elements[style.Elements.Count - 1].Color;
Linetype linetype1 = style.Elements[0].Linetype;
Linetype linetype2 = style.Elements[style.Elements.Count - 1].Linetype;
bool trim = !color1.Equals(color2) || !linetype1.Equals(linetype2);
Vector2 start = cornerVextexes[0][0];
Vector2 end = cornerVextexes[0][cornerVextexes[0].Length - 1];
Vector2 midPoint = Vector2.MidPoint(start, end);
if (trim)
{
Line line1 = CreateLine(start, midPoint, color1, linetype1);
line1.TransformBy(transformation, Vector3.Zero);
entities.Add(line1);
Line line2 = CreateLine(midPoint, end, color2, linetype2);
line2.TransformBy(transformation, Vector3.Zero);
entities.Add(line2);
}
else
{
Line line = CreateLine(start, end, color1, linetype1);
line.TransformBy(transformation, Vector3.Zero);
entities.Add(line);
}
}
}
if (!NoEndCaps)
{
if (style.Flags.HasFlag(MLineStyleFlags.EndRoundCap))
{
AciColor color1 = style.Elements[0].Color;
AciColor color2 = style.Elements[style.Elements.Count - 1].Color;
Linetype linetype1 = style.Elements[0].Linetype;
Linetype linetype2 = style.Elements[style.Elements.Count - 1].Linetype;
bool trim = !color1.Equals(color2) || !linetype1.Equals(linetype2);
Vector2 center = Vector2.MidPoint(cornerVextexes[vertexes.Count - 1][0], cornerVextexes[vertexes.Count - 1][cornerVextexes.Length - 1]);
Vector2 start = cornerVextexes[vertexes.Count - 1][cornerVextexes[0].Length - 1];
//Vector2 end = cornerVextexes[this.vertexes.Count - 1][0];
double startAngle = Vector2.Angle(start - center) * MathHelper.RadToDeg;
//double endAngle = Vector2.Angle(end - center) * MathHelper.RadToDeg;
double endAngle = startAngle + 180.0;
double radius = (start - center).Modulus();
if (trim)
{
double midAngle = startAngle + 90.0;
Arc arc1 = CreateArc(center, radius, midAngle, endAngle, color1, linetype1);
arc1.TransformBy(transformation, Vector3.Zero);
entities.Add(arc1);
Arc arc2 = CreateArc(center, radius, startAngle, midAngle, color2, linetype2);
arc2.TransformBy(transformation, Vector3.Zero);
entities.Add(arc2);
}
else
{
Arc arc = CreateArc(center, radius, startAngle, endAngle, color1, linetype1);
arc.TransformBy(transformation, Vector3.Zero);
entities.Add(arc);
}
}
if (style.Flags.HasFlag(MLineStyleFlags.EndInnerArcsCap))
{
Vector2 center = Vector2.MidPoint(cornerVextexes[vertexes.Count - 1][0], cornerVextexes[vertexes.Count - 1][cornerVextexes.Length - 1]);
int j = (int)Math.Floor(style.Elements.Count / 2.0);
for (int i = 1; i < j; i++)
{
AciColor color1 = style.Elements[i].Color;
AciColor color2 = style.Elements[style.Elements.Count - 1 - i].Color;
Linetype linetype1 = style.Elements[i].Linetype;
Linetype linetype2 = style.Elements[style.Elements.Count - 1 - i].Linetype;
bool trim = !color1.Equals(color2) || !linetype1.Equals(linetype2);
Vector2 start = cornerVextexes[vertexes.Count - 1][cornerVextexes[0].Length - 1 - i];
//Vector2 end = cornerVextexes[this.vertexes.Count - 1][i];
double startAngle = Vector2.Angle(start - center) * MathHelper.RadToDeg;
//double endAngle = Vector2.Angle(end - center) * MathHelper.RadToDeg;
double endAngle = startAngle + 180.0;
double radius = (start - center).Modulus();
if (trim)
{
double midAngle = startAngle + 90.0;
Arc arc1 = CreateArc(center, radius, midAngle, endAngle, color1, linetype1);
arc1.TransformBy(transformation, Vector3.Zero);
entities.Add(arc1);
Arc arc2 = CreateArc(center, radius, startAngle, midAngle, color2, linetype2);
arc2.TransformBy(transformation, Vector3.Zero);
entities.Add(arc2);
}
else
{
Arc arc = CreateArc(center, radius, startAngle, endAngle, color1, linetype1);
arc.TransformBy(transformation, Vector3.Zero);
entities.Add(arc);
}
}
}
if (style.Flags.HasFlag(MLineStyleFlags.EndSquareCap))
{
AciColor color1 = style.Elements[0].Color;
AciColor color2 = style.Elements[style.Elements.Count - 1].Color;
Linetype linetype1 = style.Elements[0].Linetype;
Linetype linetype2 = style.Elements[style.Elements.Count - 1].Linetype;
bool trim = !color1.Equals(color2) || !linetype1.Equals(linetype2);
Vector2 start = cornerVextexes[vertexes.Count - 1][cornerVextexes[0].Length - 1];
Vector2 end = cornerVextexes[vertexes.Count - 1][0];
Vector2 midPoint = Vector2.MidPoint(start, end);
if (trim)
{
Line line1 = CreateLine(midPoint, end, color1, linetype1);
line1.TransformBy(transformation, Vector3.Zero);
entities.Add(line1);
Line line2 = CreateLine(start, midPoint, color2, linetype2);
line2.TransformBy(transformation, Vector3.Zero);
entities.Add(line2);
}
else
{
Line line = CreateLine(start, end, color1, linetype1);
line.TransformBy(transformation, Vector3.Zero);
entities.Add(line);
}
}
}
return(entities);
}
private List<MLineVertex> ReadMLineSegments(int numVertexes, int numStyleElements, Vector3 normal, out double elevation)
{
elevation = 0.0;
List<MLineVertex> segments = new List<MLineVertex>();
Matrix3 trans = MathHelper.ArbitraryAxis(normal).Traspose();
for (int i = 0; i < numVertexes; i++)
{
Vector3 vertex = new Vector3();
vertex.X = this.chunk.ReadDouble(); // code 11
this.chunk.Next();
vertex.Y = this.chunk.ReadDouble(); // code 21
this.chunk.Next();
vertex.Z = this.chunk.ReadDouble(); // code 31
this.chunk.Next();
Vector3 dir = new Vector3();
dir.X = this.chunk.ReadDouble(); // code 12
this.chunk.Next();
dir.Y = this.chunk.ReadDouble(); // code 22
this.chunk.Next();
dir.Z = this.chunk.ReadDouble(); // code 32
this.chunk.Next();
Vector3 mitter = new Vector3();
mitter.X = this.chunk.ReadDouble(); // code 13
this.chunk.Next();
mitter.Y = this.chunk.ReadDouble(); // code 23
this.chunk.Next();
mitter.Z = this.chunk.ReadDouble(); // code 33
this.chunk.Next();
List<double>[] distances = new List<double>[numStyleElements];
for (int j = 0; j < numStyleElements; j++)
{
distances[j] = new List<double>();
short numDistances = this.chunk.ReadShort(); // code 74
this.chunk.Next();
for (short k = 0; k < numDistances; k++)
{
distances[j].Add(this.chunk.ReadDouble()); // code 41
this.chunk.Next();
}
// no more info is needed, fill parameters are not supported
short numFillParams = this.chunk.ReadShort(); // code 75
this.chunk.Next();
for (short k = 0; k < numFillParams; k++)
{
//double param = this.chunk.ReadDouble(); // code 42
this.chunk.Next();
}
}
// we need to convert WCS coordinates to OCS coordinates
if (!normal.Equals(Vector3.UnitZ))
{
vertex = trans*vertex;
dir = trans*dir;
mitter = trans*mitter;
}
MLineVertex segment = new MLineVertex(new Vector2(vertex.X, vertex.Y),
new Vector2(dir.X, dir.Y),
new Vector2(mitter.X, mitter.Y),
distances);
elevation = vertex.Z;
segments.Add(segment);
}
return segments;
}
