public void AddEdges(S2Cap index_cap, int num_edges, MutableS2ShapeIndex index)
{
var fractal = new S2Testing.Fractal();
fractal.SetLevelForApproxMaxEdges(num_edges);
index.Add(new S2Loop.Shape(
fractal.MakeLoop(S2Testing.GetRandomFrameAt(index_cap.Center),
index_cap.RadiusAngle())));
}
public void AddPoints(S2Cap index_cap, int num_points, TestIndex index)
{
S2Testing.Fractal fractal = new();
fractal.SetLevelForApproxMaxEdges(num_points);
fractal.FractalDimension = (1.5);
var loop = (
fractal.MakeLoop(S2Testing.GetRandomFrameAt(index_cap.Center),
index_cap.RadiusAngle()));
for (int i = 0; i < loop.NumVertices; ++i)
{
index.Add(loop.Vertex(i), i);
}
}
public void AddPoints(S2Cap index_cap, int num_points, TestIndex index)
{
int sqrt_num_points = (int)Math.Ceiling(Math.Sqrt(num_points));
S2PointVector3 frame = S2Testing.GetRandomFrameAt(index_cap.Center);
double radius = index_cap.RadiusAngle().Radians;
double spacing = 2 * radius / sqrt_num_points;
for (int i = 0; i < sqrt_num_points; ++i)
{
for (int j = 0; j < sqrt_num_points; ++j)
{
S2Point point = new(Math.Tan((i + 0.5) * spacing - radius),
Math.Tan((j + 0.5) * spacing - radius), 1.0);
index.Add(S2.FromFrame(frame, point.Normalize()),
i * sqrt_num_points + j);
}
}
}
public void Test_VisitIntersectingShapes_Polygons()
{
MutableS2ShapeIndex index = new();
S2Cap center_cap = new(new(1, 0, 0), S1Angle.FromRadians(0.5));
S2Testing.Fractal fractal = new();
for (int i = 0; i < 10; ++i)
{
fractal.SetLevelForApproxMaxEdges(3 * 64);
S2Point center = S2Testing.SamplePoint(center_cap);
index.Add(new S2Loop.Shape(
fractal.MakeLoop(S2Testing.GetRandomFrameAt(center),
S1Angle.FromRadians(S2Testing.Random.RandDouble()))));
}
// Also add a big polygon containing most of the polygons above to ensure
// that we test containment of cells that are ancestors of index cells.
index.Add(NewPaddedCell(S2CellId.FromFace(0), 0));
new VisitIntersectingShapesTest(index).Run();
}
public void Test_S2LaxPolygonShape_CompareToS2Loop()
{
for (int iter = 0; iter < 100; ++iter)
{
var fractal = new S2Testing.Fractal();
fractal.MaxLevel = (S2Testing.Random.Uniform(5));
fractal.FractalDimension = (1 + S2Testing.Random.RandDouble());
S2Point center = S2Testing.RandomPoint();
var loop = fractal.MakeLoop(
S2Testing.GetRandomFrameAt(center), S1Angle.FromDegrees(5));
// Compare S2Loop to S2LaxLoopShape.
CompareS2LoopToShape(loop, new S2LaxLoopShape(loop));
// Compare S2Loop to S2LaxPolygonShape.
var loops = new List <List <S2Point> > {
loop.CloneVertices().ToList()
};
CompareS2LoopToShape(loop, new S2LaxPolygonShape(loops));
}
}
