public void Build(TracingConfiguration config, Func <double> random, INamedDataCollection metadata, Vector2 min, Vector2 max)
{
Contract.Requires(config != null);
Contract.Requires(random != null);
Contract.Requires(metadata != null);
if (!_begun)
{
Begin(min, max);
AddBoundary(min, max);
}
var extent = max - min;
var eigens = config.TensorField.Presample(min, max, (uint)Math.Max(extent.X, extent.Y));
var count = (int)((extent.X * extent.Y) / 2500);
Func <Vector2, bool> isOutOfBounds = v => v.X > max.X || v.X <min.X || v.Y> max.Y || v.Y < min.Y;
var seeds = RandomSeedsInBounds(random, count, eigens.MajorEigenVectors, eigens.MinorEigenVectors, min, max, isOutOfBounds);
Build(seeds, min, max, config.SeparationField, true, true, config.SegmentLength, config.MergeDistance, config.CosineSearchConeAngle, isOutOfBounds, null, s =>
{
s.Width = (uint)config.RoadWidth.SelectIntValue(random, metadata);
LinearReduction(s);
});
}
public void Build(TracingConfiguration config, Func <double> random, INamedDataCollection metadata, Region region)
{
Contract.Requires(config != null);
Contract.Requires(random != null);
Contract.Requires(metadata != null);
Contract.Requires(region != null);
//var extent = region.Max - region.Min;
//var eigens = config.TensorField.Presample(new Vector2(region.Min.X, region.Min.Y), new Vector2(region.Max.X, region.Max.Y), (int)Math.Max(extent.X, extent.Y));
var ex = _max - _min;
var eigens = config.TensorField.Presample(_min, _max, (uint)Math.Max(ex.X, ex.Y));
var seeds = SeedsAlongEdge(region, config.SeparationField, eigens.MajorEigenVectors, eigens.MinorEigenVectors);
Build(seeds, region.Min, region.Max,
config.SeparationField,
true, true,
config.MergeDistance,
config.SegmentLength,
config.CosineSearchConeAngle,
p => !region.PointInPolygon(p), e => e.Streamline.Region == region,
s => {
s.Width = (uint)config.RoadWidth.SelectIntValue(random, metadata);
s.Region = region;
LinearReduction(s);
});
}
