private List <List <Vector2> > GenerateInsidePoints(IEnumerable <PSPolygon> polygons, int r)
{
var area = new Vector2[] {
new Vector2(r, r), new Vector2(r, -r), new Vector2(-r, -r), new Vector2(-r, r)
};
var insidePolygons = MeshToPolygonConverter.InsidePolygons(area, polygons, -insideOffset).ToList();
insidePolygons.ForEach(p => p.Precalc());
var insideLookup = insidePolygons.ToLookup(p => p.IsHole);
var magnitudeStep = 1f;
var magnitudeCount = Mathf.CeilToInt((outerRadius - insideInnerRadius) / magnitudeStep);
return(Enumerable.Range(0, 360).Select(i => {
var angle = i * Mathf.Deg2Rad;
var direction = new Vector2(Mathf.Sin(angle), Mathf.Cos(angle));
return Enumerable.Range(0, magnitudeCount).Select(j => direction * (insideInnerRadius + j * magnitudeStep)).Where(p => {
return insideLookup[false].Any(c => c.PointInPolygon(p)) && insideLookup[true].All(c => !c.PointInPolygon(p));
}).ToList();
}).Where(l => l.Count > 0).ToList());
}
private List <PSPolygon> GeneratePolygons(List <Vector2> vertices, List <int> triangles, Vector2[][] segments)
{
var contours = MeshToPolygonConverter.ContourPolygons(vertices, triangles).ToList();
return(segments.AsParallel().SelectMany(segment => MeshToPolygonConverter.FragmentPolygons(contours, segment)).ToList());
}