+ Position interpolation for single-axis mirroring.

OSCADSharp/OSCADSharp.ConsoleTests/Program.cs

@@ -13,7 +13,7 @@ namespace OSCADSharp.ConsoleTests
     {
         static void Main(string[] args)
         {
-            var obj = new Text3D("Hello, it's Meeeee.");
+            var obj = new Cube(5, 10, 20).Mirror(0, 0, 1);
 
             var pos = obj.Position();
             var cyl1 = new Cylinder(1, 100, true).Translate(pos);

OSCADSharp/OSCADSharp.UnitTests/MirrorTests.cs

@@ -0,0 +1,35 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using OSCADSharp.Solids;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OSCADSharp.UnitTests
+{
+    [TestClass]
+    public class MirrorTests
+    {
+        [TestMethod]
+        public void Mirror_SingleAxisMirrorInvertsPosition()
+        {
+            var cube = new Cube(5, 10, 20);
+            var xMirror = cube.Clone().Mirror(1, 0, 0);
+            var yMirror = cube.Clone().Mirror(0, 1, 0);
+            var zMirror = cube.Clone().Mirror(0, 0, 1);
+
+            var pos = cube.Position().Clone();
+            pos.X = -pos.X;
+            Assert.AreEqual(pos, xMirror.Position());
+
+            pos = cube.Position().Clone();
+            pos.Y = -pos.Y;
+            Assert.AreEqual(pos, yMirror.Position());
+
+            pos = cube.Position().Clone();
+            pos.Z = -pos.Z;
+            Assert.AreEqual(pos, zMirror.Position());
+        }
+    }
+}

OSCADSharp/OSCADSharp.UnitTests/OSCADSharp.UnitTests.csproj

@@ -56,6 +56,7 @@
     <Compile Include="CylinderTests.cs" />
     <Compile Include="HullTests.cs" />
     <Compile Include="InterpolationTests.cs" />
+    <Compile Include="MirrorTests.cs" />
     <Compile Include="OSCADObjectTests.cs" />
     <Compile Include="SphereTests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />

OSCADSharp/OSCADSharp/Transforms/MirroredObject.cs

@@ -1,4 +1,5 @@
 using OSCADSharp.Scripting;
+using OSCADSharp.Spatial;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -50,9 +51,17 @@ namespace OSCADSharp.Transforms
             return new MirroredObject(obj, this.Normal);
         }
 
+        // TODO:  This will yield incorrect positions if mirroring on multiple axes
+        // fix mirrored positions for multiple-axis mirroring
         public override Vector3 Position()
         {
-            throw new NotImplementedException();
+            var pos = obj.Position();
+
+            double x = this.Normal.X != 0 ? pos.X * -1 : pos.X;
+            double y = this.Normal.Y != 0 ? pos.Y * -1 : pos.Y;
+            double z = this.Normal.Z != 0 ? pos.Z * -1 : pos.Z;
+
+            return new Vector3(x, y, z);
         }
     }
 }