private double getVertexWeight(Polyline polyline, int pathIndex, int pointIndex)
{
ICoordinate p1 = polyline.Paths[pathIndex].Vertices[pointIndex - 1];
ICoordinate p2 = polyline.Paths[pathIndex].Vertices[pointIndex];
ICoordinate p3 = polyline.Paths[pathIndex].Vertices[pointIndex + 1];
switch (_vertexWeighting)
{
case VertexWeightingType.NormalizedLinear:
case VertexWeightingType.AngleCube:
// length of the segments
double s1 = PlanimetryAlgorithms.Distance(p1, p2);
double s2 = PlanimetryAlgorithms.Distance(p2, p3);
double s1s2 = s1 * s2;
// angle of rotation
double angle = Math.PI - Math.Abs(Math.Acos(((p1.X - p2.X) * (p3.X - p2.X) + (p1.Y - p2.Y) * (p3.Y - p2.Y)) / s1s2));
if (_vertexWeighting == VertexWeightingType.SquareDifference)
{
return(s1s2 * angle / (s1 + s2));
}
else
{
return(s1s2 * angle * angle * angle);
}
case VertexWeightingType.SquareDifference:
return(Math.Abs((p2.X - p1.X) * (p3.Y - p1.Y) - (p3.X - p1.X) * (p2.Y - p1.Y)));
case VertexWeightingType.Custom:
if (SDMinVertexWeightNeeded != null)
{
SDMinVertexWeightNeededEventArgs args =
new SDMinVertexWeightNeededEventArgs(p1, p2, p3, pathIndex, pointIndex);
SDMinVertexWeightNeeded(this, args);
return(args.Weight);
}
break;
}
return(0);
}
private double getVertexWeight(Polyline polyline, int pathIndex, int pointIndex)
{
ICoordinate p1 = polyline.Paths[pathIndex].Vertices[pointIndex - 1];
ICoordinate p2 = polyline.Paths[pathIndex].Vertices[pointIndex];
ICoordinate p3 = polyline.Paths[pathIndex].Vertices[pointIndex + 1];
switch (_vertexWeighting)
{
case VertexWeightingType.NormalizedLinear:
case VertexWeightingType.AngleCube:
// length of the segments
double s1 = PlanimetryAlgorithms.Distance(p1, p2);
double s2 = PlanimetryAlgorithms.Distance(p2, p3);
double s1s2 = s1 * s2;
// angle of rotation
double angle = Math.PI - Math.Abs(Math.Acos(((p1.X - p2.X) * (p3.X - p2.X) + (p1.Y - p2.Y) * (p3.Y - p2.Y)) / s1s2));
if (_vertexWeighting == VertexWeightingType.SquareDifference)
return s1s2 * angle / (s1 + s2);
else
return s1s2 * angle * angle * angle;
case VertexWeightingType.SquareDifference:
return Math.Abs((p2.X - p1.X) * (p3.Y - p1.Y) - (p3.X - p1.X) * (p2.Y - p1.Y));
case VertexWeightingType.Custom:
if (SDMinVertexWeightNeeded != null)
{
SDMinVertexWeightNeededEventArgs args =
new SDMinVertexWeightNeededEventArgs(p1, p2, p3, pathIndex, pointIndex);
SDMinVertexWeightNeeded(this, args);
return args.Weight;
}
break;
}
return 0;
}