RevitSdkSamples/SDK/Samples/StairsAutomation/CS/GeometryUtils.cs

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using System;
using System.Collections.Generic;
using Autodesk.Revit.DB;

namespace Revit.SDK.Samples.StairsAutomation.CS
{
   /// <summary>
   /// Description of GeometryUtils.
   /// </summary>
   public static class GeometryUtils
   {
      /// <summary>
      /// Creates a duplicate of a set of curves, applying the specified transform to each.
      /// </summary>
      /// <param name="inputs">The inputs.</param>
      /// <param name="trf">The transformation.</param>
      /// <returns>The copy of the curves.</returns>
      public static IList<Curve> TransformCurves(IList<Curve> inputs, Transform trf)
      {
         int numCurves = inputs.Count;
         List<Curve> result = new List<Curve>(numCurves);

         for (int i = 0; i < numCurves; i++)
         {
            result.Add(TransformCurve(inputs[i], trf));
         }
         return result;
      }

      /// <summary>
      /// Creates a duplicate curve, applying the specified transform to each.
      /// </summary>
      /// <param name="input">The input.</param>
      /// <param name="trf">The transformation.</param>
      /// <returns>The copy of the curve.</returns>
      public static Curve TransformCurve(Curve input, Transform trf)
      {
         Curve trfCurve = input.CreateTransformed(trf);
         return trfCurve;
      }
   }
}