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Add extension method to compute transformed point position from room
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MapGeneration.IntegrationTests/MapGeneration.IntegrationTests.csproj
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| <Project Sdk="Microsoft.NET.Sdk"> | ||
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| <PropertyGroup> | ||
| <TargetFramework>netcoreapp3.0</TargetFramework> | ||
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| <IsPackable>false</IsPackable> | ||
| </PropertyGroup> | ||
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| <ItemGroup> | ||
| <PackageReference Include="nunit" Version="3.12.0" /> | ||
| <PackageReference Include="NUnit3TestAdapter" Version="3.13.0" /> | ||
| <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" /> | ||
| </ItemGroup> | ||
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| <ItemGroup> | ||
| <ProjectReference Include="..\MapGeneration\MapGeneration.csproj" /> | ||
| </ItemGroup> | ||
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| </Project> |
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MapGeneration.IntegrationTests/Utils/RoomExtensionsTests.cs
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| using System.Linq; | ||
| using GeneralAlgorithms.DataStructures.Common; | ||
| using GeneralAlgorithms.DataStructures.Polygons; | ||
| using MapGeneration.Core.Doors.DoorModes; | ||
| using MapGeneration.Core.MapDescriptions; | ||
| using MapGeneration.Utils; | ||
| using NUnit.Framework; | ||
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| namespace MapGeneration.IntegrationTests.Utils | ||
| { | ||
| [TestFixture] | ||
| public class RoomExtensionsTests | ||
| { | ||
| [Test] | ||
| public void TransformPointToNewPosition_RectanglePoints() | ||
| { | ||
| // Create a rectangular room shape | ||
| // Move it away from (0, 0) so that we can properly test the functionality | ||
| var rectangleShape = GridPolygon.GetRectangle(10, 4) + new IntVector2(10, 10); | ||
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| // Create points to be transformed | ||
| // These could be for example traps, spawn points, etc. | ||
| // We use points of the rectangle here because it is easy to check that the transformation is correct. | ||
| var pointsToTransform = rectangleShape.GetPoints(); | ||
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| var mapDescription = new MapDescription<int>(); | ||
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| // Create simple graph with 2 vertices and 1 edge | ||
| mapDescription.AddRoom(0); | ||
| mapDescription.AddRoom(1); | ||
| mapDescription.AddPassage(0, 1); | ||
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| // Add the rectangle shape | ||
| mapDescription.AddRoomShapes(new RoomDescription(rectangleShape, new OverlapMode(1, 0))); | ||
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| var layoutGenerator = LayoutGeneratorFactory.GetDefaultChainBasedGenerator<int>(); | ||
| var layout = layoutGenerator.GetLayouts(mapDescription, 1)[0]; | ||
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| foreach (var room in layout.Rooms) | ||
| { | ||
| // The points were chosen to be the points of the polygon, so after transforming them, they should | ||
| // be equal to the room.Shape + room.Position points | ||
| var transformedPoints = pointsToTransform.Select(x => room.TransformPointToNewPosition(x)); | ||
| var expectedPoints = (room.Shape + room.Position).GetPoints(); | ||
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| Assert.That(transformedPoints, Is.EquivalentTo(expectedPoints)); | ||
| } | ||
| } | ||
| } | ||
| } |
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|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| using System.Collections.Generic; | ||
| using GeneralAlgorithms.DataStructures.Common; | ||
| using GeneralAlgorithms.DataStructures.Polygons; | ||
| using MapGeneration.Core.Doors.DoorModes; | ||
| using MapGeneration.Core.MapDescriptions; | ||
| using MapGeneration.Core.MapLayouts; | ||
| using MapGeneration.Utils; | ||
| using NUnit.Framework; | ||
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| namespace MapGeneration.Tests.Utils | ||
| { | ||
| [TestFixture] | ||
| public class RoomExtensionsTests | ||
| { | ||
| [Test] | ||
| public void TransformPointToNewPosition_Identity() | ||
| { | ||
| var room = GetRoom(new IntVector2(0, 0), new IntVector2(0, 0), Transformation.Identity, null); | ||
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| var point = new IntVector2(5, 5); | ||
| var transformedPoint = room.TransformPointToNewPosition(point); | ||
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| Assert.That(transformedPoint, Is.EqualTo(new IntVector2(5, 5))); | ||
| } | ||
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| [Test] | ||
| public void TransformPointToNewPosition_Rotate90() | ||
| { | ||
| var room = GetRoom(new IntVector2(0, 0), new IntVector2(0, 0), Transformation.Rotate90, null); | ||
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| var point = new IntVector2(10, 5); | ||
| var transformedPoint = room.TransformPointToNewPosition(point); | ||
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| Assert.That(transformedPoint, Is.EqualTo(new IntVector2(5, 0))); | ||
| } | ||
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| [Test] | ||
| public void TransformPointToNewPosition_Identity_WithPosition() | ||
| { | ||
| var room = GetRoom(new IntVector2(10, 10), new IntVector2(0, 0), Transformation.Identity, null); | ||
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| var point = new IntVector2(5, 5); | ||
| var transformedPoint = room.TransformPointToNewPosition(point); | ||
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| Assert.That(transformedPoint, Is.EqualTo(new IntVector2(15, 15))); | ||
| } | ||
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| [Test] | ||
| public void TransformPointToNewPosition_Rotate180_WithPosition() | ||
| { | ||
| var room = GetRoom(new IntVector2(10, 10), new IntVector2(0, 0), Transformation.Rotate180, null); | ||
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| var point = new IntVector2(10, 5); | ||
| var transformedPoint = room.TransformPointToNewPosition(point); | ||
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| Assert.That(transformedPoint, Is.EqualTo(new IntVector2(10, 15))); | ||
| } | ||
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| [Test] | ||
| public void TransformPointToNewPosition_Rotate180_WithPosition_WithOrigin() | ||
| { | ||
| var room = GetRoom(new IntVector2(10, 10), new IntVector2(7, 10), Transformation.Rotate180, null); | ||
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| var point = new IntVector2(10, 5); | ||
| var transformedPoint = room.TransformPointToNewPosition(point); | ||
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| Assert.That(transformedPoint, Is.EqualTo(new IntVector2(17, 25))); | ||
| } | ||
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| private Room<int> GetRoom(IntVector2 position, IntVector2 roomShapeOrigin, Transformation transformation, List<Transformation> transformations) | ||
| { | ||
| return new Room<int>(0, | ||
| GridPolygon.GetSquare(10), | ||
| position, | ||
| false, | ||
| new RoomDescription(GridPolygon.GetSquare(10) + roomShapeOrigin, new OverlapMode(1, 0)), | ||
| transformation, | ||
| transformations); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| using System; | ||
| using GeneralAlgorithms.DataStructures.Common; | ||
| using MapGeneration.Interfaces.Core.MapLayouts; | ||
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| namespace MapGeneration.Utils | ||
| { | ||
| public static class RoomExtensions | ||
| { | ||
| /// <summary> | ||
| /// Transforms a given point to a position such that if the point was in some relative position to the | ||
| /// RoomShape of the associated MapDescription, the returned point will be in that some relative position | ||
| /// with respect to the position and transformation of the RoomShape in the generated layout. | ||
| /// </summary> | ||
| /// <remarks> | ||
| /// This function is useful e.g. if we have some trap or spawn positions defined for our room shapes and | ||
| /// then need to know where to place them in the generated layout. | ||
| /// | ||
| /// If the room is invariant to some transformation (e.g. does not change when rotated by 90 degrees), then | ||
| /// all such transformations are contained in the room.Transformation collection. All these transformations | ||
| /// can be used for the "transformation" parameter if we do not want to use the room.Transformation transformation. | ||
| /// </remarks> | ||
| /// <typeparam name="TNode"></typeparam> | ||
| /// <param name="room"></param> | ||
| /// <param name="point">Point to be transformed to the new position</param> | ||
| /// <param name="transformation">Transformation to be used. It must be one of the room.Transformations. Defaults to room.Transformation.</param> | ||
| /// <returns></returns> | ||
| public static IntVector2 TransformPointToNewPosition<TNode>(this IRoom<TNode> room, IntVector2 point, Transformation? transformation = null) | ||
| { | ||
| if (transformation != null && room.Transformations.Contains(transformation.Value)) | ||
| { | ||
| throw new ArgumentException("Transformation must be one of the possible room transformations", nameof(transformation)); | ||
| } | ||
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| transformation = transformation ?? room.Transformation; | ||
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| var transformedShape = room.RoomDescription.Shape.Transform(transformation.Value); | ||
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| return (point.Transform(transformation.Value) - transformedShape.BoundingRectangle.A) + room.Position; | ||
| } | ||
| } | ||
| } |