Rename MeshExplorer to Triangle.Viewer (keeping old namespace for now).

2022-03-05 01:07:05 +01:00
parent 23c2682c6e
commit 4484c6c31a
60 changed files with 3 additions and 2 deletions
@@ -0,0 +1,100 @@
+// -----------------------------------------------------------------------
+// <copyright file="RingPolygon.cs" company="">
+// Christian Woltering, Triangle.NET, http://triangle.codeplex.com/
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace MeshExplorer.Generators
+{
+    using System;
+    using System.Collections.Generic;
+    using TriangleNet.Geometry;
+
+    /// <summary>
+    /// Generates a ring polygon.
+    /// </summary>
+    public class RingPolygon : BaseGenerator
+    {
+        public RingPolygon()
+        {
+            name = "Ring";
+            description = "";
+            parameter = 2;
+
+            descriptions[0] = "Number of points:";
+            descriptions[1] = "Variation:";
+
+            ranges[0] = new int[] { 50, 250 };
+            ranges[1] = new int[] { 0, 1 };
+        }
+
+        public override string ParameterDescription(int paramIndex, double paramValue)
+        {
+            if (paramIndex == 0)
+            {
+                int numRays = GetParamValueInt(paramIndex, paramValue);
+                return numRays.ToString();
+            }
+
+            if (paramIndex == 1)
+            {
+                double variation = GetParamValueDouble(paramIndex, paramValue);
+                return variation.ToString("0.0", Util.Nfi);
+            }
+
+            return "";
+        }
+
+        public override IPolygon Generate(double param0, double param1, double param2)
+        {
+            int n = GetParamValueInt(0, param0);
+            int m = n / 2;
+
+            var input = new Polygon(n + 1);
+
+            double ro, r = 10;
+            double step = 2 * Math.PI / m;
+
+            var inner = new List<Vertex>(m);
+
+            // Inner ring
+            for (int i = 0; i < m; i++)
+            {
+                inner.Add(new Vertex(r * Math.Cos(i * step), r * Math.Sin(i * step)));
+            }
+
+            input.Add(new Contour(inner, 1));
+
+            r = 1.5 * r;
+
+            var outer = new List<Vertex>(n);
+
+            step = 2 * Math.PI / n;
+            double offset = step / 2;
+
+            // Outer ring
+            for (int i = 0; i < n; i++)
+            {
+                ro = r;
+
+                if (i % 2 == 0)
+                {
+                    ro = r + r * Util.Random.NextDouble() * (param1 / 100);
+                }
+
+                outer.Add(new Vertex(ro * Math.Cos(i * step + offset), ro * Math.Sin(i * step + offset)));
+            }
+
+            input.Add(new Contour(outer, 2));
+
+            input.Holes.Add(new Point(0, 0));
+
+            return input;
+        }
+
+        public override string ToString()
+        {
+            return this.Name;
+        }
+    }
+}