feat: add DrawingDxfExporter to convert PEP Drawing to DXF stream

2026-06-23 06:49:50 -04:00
parent 617de2e854
commit af07946a79
5 changed files with 207 additions and 0 deletions
@@ -0,0 +1,63 @@
+using PepLib.Codes;
+using PepLib.Enums;
+using PepLib.Geometry;
+using PepLib.IO;
+using PepLib.Models;
+using Xunit;
+
+namespace PepLib.Core.Tests.IO;
+
+public class DrawingDxfExporterTests
+{
+    [Fact]
+    public void Export_RectangularLoop_ProducesFourLines()
+    {
+        // Arrange: a square 10x10 in incremental mode
+        var drawing = new Drawing();
+        drawing.Info = new DrawingInfo { Name = "TEST" };
+        var loop = new Loop { Name = "TEST.loop-000" };
+        // Mode defaults to Incremental in Loop constructor
+        loop.Add(new RapidMove(new Vector(0, 0)));   // position at (0,0)
+        loop.Add(new LinearMove(new Vector(10, 0)));  // → (10,0)
+        loop.Add(new LinearMove(new Vector(0, 10)));  // → (10,10)
+        loop.Add(new LinearMove(new Vector(-10, 0))); // → (0,10)
+        loop.Add(new LinearMove(new Vector(0, -10))); // → (0,0)
+        drawing.Loops.Add(loop);
+
+        // Act
+        using var stream = DrawingDxfExporter.Export(drawing);
+
+        // Assert: stream is non-empty and contains 4 line entities
+        Assert.True(stream.Length > 0);
+
+        stream.Position = 0;
+        using var reader = new ACadSharp.IO.DxfReader(stream);
+        var doc = reader.Read();
+        var lines = doc.Entities.OfType<ACadSharp.Entities.Line>().ToList();
+        var arcs = doc.Entities.OfType<ACadSharp.Entities.Arc>().ToList();
+        Assert.Equal(4, lines.Count);
+        Assert.Empty(arcs);
+    }
+
+    [Fact]
+    public void Export_LoopWithArc_ProducesLineAndArc()
+    {
+        var drawing = new Drawing();
+        drawing.Info = new DrawingInfo { Name = "TEST" };
+        var loop = new Loop { Name = "TEST.loop-000" };
+        loop.Add(new RapidMove(new Vector(5, 0)));                              // start at (5,0)
+        loop.Add(new LinearMove(new Vector(5, 0)));                             // → (10,0)
+        loop.Add(new CircularMove(new Vector(-5, 5), new Vector(-5, 0), RotationType.CCW)); // arc: end=(5,5), center=(5,0)
+        drawing.Loops.Add(loop);
+
+        using var stream = DrawingDxfExporter.Export(drawing);
+
+        stream.Position = 0;
+        using var reader = new ACadSharp.IO.DxfReader(stream);
+        var doc = reader.Read();
+        var lines = doc.Entities.OfType<ACadSharp.Entities.Line>().ToList();
+        var arcs = doc.Entities.OfType<ACadSharp.Entities.Arc>().ToList();
+        Assert.Single(lines);
+        Assert.Single(arcs);
+    }
+}