private List <EntityObject> CreateRoundCap(Vector2 start, Vector2 end, Matrix3 transformation, AciColor color1, Linetype linetype1, AciColor color2, Linetype linetype2)
{
List <EntityObject> entities = new List <EntityObject>();
Vector2 center = Vector2.MidPoint(start, end);
double startAngle = Vector2.Angle(start - center) * MathHelper.RadToDeg;
double endAngle = startAngle + 180.0;
double radius = (start - center).Modulus();
if (!MathHelper.IsZero(radius))
{
if (!color1.Equals(color2) || !linetype1.Equals(linetype2))
{
double midAngle = startAngle + 90.0;
Arc arc1 = this.CreateArc(center, radius, startAngle, midAngle, color1, linetype1);
arc1.TransformBy(transformation, Vector3.Zero);
entities.Add(arc1);
Arc arc2 = this.CreateArc(center, radius, midAngle, endAngle, color2, linetype2);
arc2.TransformBy(transformation, Vector3.Zero);
entities.Add(arc2);
}
else
{
Arc arc = this.CreateArc(center, radius, startAngle, endAngle, color1, linetype1);
arc.TransformBy(transformation, Vector3.Zero);
entities.Add(arc);
}
}
return(entities);
}
private List <EntityObject> CreateSquareCap(Vector2 start, Vector2 end, Matrix3 transformation, AciColor color1, Linetype linetype1, AciColor color2, Linetype linetype2)
{
List <EntityObject> entities = new List <EntityObject>();
Vector2 midPoint = Vector2.MidPoint(start, end);
if (!color1.Equals(color2) || !linetype1.Equals(linetype2))
{
Line line1 = this.CreateLine(start, midPoint, color1, linetype1);
line1.TransformBy(transformation, Vector3.Zero);
entities.Add(line1);
Line line2 = this.CreateLine(midPoint, end, color2, linetype2);
line2.TransformBy(transformation, Vector3.Zero);
entities.Add(line2);
}
else
{
Line line = this.CreateLine(start, end, color1, linetype1);
line.TransformBy(transformation, Vector3.Zero);
entities.Add(line);
}
return(entities);
}
/// <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);
}
