Refactoring the DesignTools primitives

DesignTools/TestParts/CurveTest.cs

@@ -0,0 +1,111 @@
+/*
+Copyright (c) 2018, Lars Brubaker, John Lewin
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+The views and conclusions contained in the software and documentation are those
+of the authors and should not be interpreted as representing official policies,
+either expressed or implied, of the FreeBSD Project.
+*/
+
+using System.ComponentModel;
+using System.Linq;
+using System.Threading;
+using MatterHackers.Agg.Font;
+using MatterHackers.Agg.VertexSource;
+using MatterHackers.DataConverters3D;
+using MatterHackers.VectorMath;
+
+namespace MatterHackers.MatterControl.DesignTools
+{
+	public class CurveTest : Object3D, IRebuildable
+	{
+		public override string ActiveEditor => "PublicPropertyEditor";
+
+		private PolygonMesh.Mesh inputMesh;
+
+		private PolygonMesh.Mesh transformedMesh;
+
+		public CurveTest()
+		{
+			var letterPrinter = new TypeFacePrinter("MatterHackers");
+			inputMesh = VertexSourceToMesh.Extrude(letterPrinter, 5);
+			transformedMesh = PolygonMesh.Mesh.Copy(inputMesh, CancellationToken.None);
+
+			Rebuild();
+		}
+
+		[DisplayName("Angle")]
+		public double AngleDegrees { get; set; } = 0;
+
+		[DisplayName("Bend Up")]
+		public bool BendCW { get; set; } = true;
+
+		public void Rebuild()
+		{
+			if (AngleDegrees > 0)
+			{
+				var aabb = inputMesh.GetAxisAlignedBoundingBox();
+
+				// find the radius that will make the x-size sweep out the requested angle
+				// c = Tr ; r = c/T
+				var angleRadians = MathHelper.DegreesToRadians(AngleDegrees);
+				var circumference = aabb.XSize * MathHelper.Tau / angleRadians;
+				var radius = circumference / MathHelper.Tau;
+
+				var rotateXyPos = new Vector2(aabb.minXYZ.X, BendCW ? aabb.maxXYZ.Y : aabb.minXYZ.Y);
+				if (!BendCW)
+				{
+					angleRadians = -angleRadians;
+				}
+
+				for (int i = 0; i < transformedMesh.Vertices.Count; i++)
+				{
+					var pos = inputMesh.Vertices[i].Position;
+					var pos2D = new Vector2(pos);
+					Vector2 rotateSpace = pos2D - rotateXyPos;
+					var rotateRatio = rotateSpace.X / aabb.XSize;
+
+					rotateSpace.X = 0;
+					rotateSpace.Y += BendCW ? -radius : radius;
+					rotateSpace.Rotate(angleRadians * rotateRatio);
+					rotateSpace.Y += BendCW ? radius : -radius; ;
+					rotateSpace += rotateXyPos;
+
+					transformedMesh.Vertices[i].Position = new Vector3(rotateSpace.X, rotateSpace.Y, pos.Z);
+				}
+			}
+			else
+			{
+				for (int i = 0; i < transformedMesh.Vertices.Count; i++)
+				{
+					transformedMesh.Vertices[i].Position = inputMesh.Vertices[i].Position;
+				}
+			}
+
+			transformedMesh.MarkAsChanged();
+			transformedMesh.CalculateNormals();
+
+			this.Mesh = transformedMesh;
+		}
+	}
+}