update

tests/TraceCad.Tests/TransformTests.cs

@@ -0,0 +1,60 @@
+using TraceCad.Core.Commands;
+using TraceCad.Core.Geometry;
+using TraceCad.Core.Model;
+using Xunit;
+
+namespace TraceCad.Tests;
+
+public sealed class TransformTests
+{
+    [Fact]
+    public void RotateDocumentRotatesEntitiesAndReference()
+    {
+        var document = SketchDocument.CreateDefault();
+        document.AddEntity(new LineEntity(
+            Guid.NewGuid(),
+            Layer.Cut.Name,
+            new Point2(1, 0),
+            new Point2(1, 1)));
+        document.Reference = new ReferenceImage(
+            "reference.png",
+            0.5,
+            true,
+            new ReferenceTransform(1, 0, 0.125, 0.125, 0));
+
+        var command = new RotateDocumentCommand(90, Point2.Origin);
+        command.Apply(document);
+
+        var line = Assert.IsType<LineEntity>(document.Entities[0]);
+        Assert.Equal(0.0, line.Start.X, 9);
+        Assert.Equal(1.0, line.Start.Y, 9);
+        Assert.Equal(-1.0, line.End.X, 9);
+        Assert.Equal(1.0, line.End.Y, 9);
+        Assert.NotNull(document.Reference);
+        Assert.Equal(0.0, document.Reference.Transform.OriginX, 9);
+        Assert.Equal(1.0, document.Reference.Transform.OriginY, 9);
+        Assert.Equal(90.0, document.Reference.Transform.RotationDeg, 9);
+    }
+
+    [Fact]
+    public void RotateDocumentReverts()
+    {
+        var document = SketchDocument.CreateDefault();
+        var line = new LineEntity(
+            Guid.NewGuid(),
+            Layer.Cut.Name,
+            new Point2(1, 0),
+            new Point2(1, 1));
+        document.AddEntity(line);
+
+        var command = new RotateDocumentCommand(37, new Point2(5, 5));
+        command.Apply(document);
+        command.Revert(document);
+
+        var reverted = Assert.IsType<LineEntity>(document.Entities[0]);
+        Assert.Equal(line.Start.X, reverted.Start.X, 9);
+        Assert.Equal(line.Start.Y, reverted.Start.Y, 9);
+        Assert.Equal(line.End.X, reverted.End.X, 9);
+        Assert.Equal(line.End.Y, reverted.End.Y, 9);
+    }
+}