46 lines
2 KiB
C#
46 lines
2 KiB
C#
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using Xunit;
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namespace CultMath.Tests;
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public sealed class PlanetaryQueryTests
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{
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private static readonly PlanetaryFieldDefinition Field = new(12, 10, 0, AdvancedErosionParameters.Default with { Strength = 0, Octaves = 0 });
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private static readonly PlanetaryQueryScale Scale = PlanetaryQueryScale.AtFootprint(0.1f, 0);
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[Fact]
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public void RayIntersectionAndClearanceUseTheCpuSurfaceContract()
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{
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var source = new BulgedSphere();
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Assert.True(PlanetaryQueries.TryIntersectRay(
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Field, new double3(0, 0, 20), new double3(0, 0, -1), 30,
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Scale, new PlanetaryRadialBounds(-1, 1), source, out var hit));
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Assert.InRange(hit.Distance, 8.99999, 9.00001);
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Assert.InRange(hit.PlanetLocalPosition.z, 10.99999, 11.00001);
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var clearance = PlanetaryQueries.SegmentClearance(
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Field, new double3(-2, 0, 12), new double3(2, 0, 12), 0.1, Scale, source);
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Assert.True(clearance > 0.8);
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}
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[Fact]
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public void GreatCircleAndRegionQueriesReturnVersionedSamples()
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{
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var source = new BulgedSphere();
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var path = PlanetaryQueries.SampleGreatCircle(Field, new float3(1, 0, 0), new float3(0, 1, 0), 8, Scale, source);
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Assert.Equal(9, path.Length);
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Assert.Equal(MathF.PI * 5, path[^1].Distance, 4);
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Assert.All(path, point => Assert.Equal(Field.FieldVersion, point.Surface.FieldVersion));
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var summary = PlanetaryQueries.Summarize(Field, path.Select(point => point.Surface.UnitDirection).ToArray(), Scale, source);
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Assert.True(summary.MaximumDisplacement >= summary.MinimumDisplacement);
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Assert.True(summary.MaximumSlope >= 0);
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}
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private readonly struct BulgedSphere : IPlanetaryBaseField
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{
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public PlanetaryBaseFieldSample Sample(float3 direction)
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{
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var displacement = direction.z;
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var gradient = new float3(0, 0, 1) - direction * direction.z;
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return new(displacement, gradient, 0, float3.zero, 0);
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}
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}
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}
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