MulAvailable

StgSharp.Model/Step/Items/StepBSplineCurveWithKnots.cs

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+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="StepBSplineCurveWithKnots"
+// Project: StgSharp
+// AuthorGroup: Nitload Space
+// Copyright (c) Nitload Space. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using StgSharp.Model.Step;
+using StgSharp.Script;
+using StgSharp.Script.Express;
+
+using System;
+
+using System.Collections.Generic;
+using System.Linq;
+
+namespace StgSharp.Model.Step
+{
+    public enum StepKnotType
+    {
+
+        UniformKnots,
+        QuasiUniformKnots,
+        PiecewiseBezierKnots,
+        Unspecified
+
+    }
+
+;
+
+    public class StepBSplineCurveWithKnots : StepBSplineCurve, IExpConvertableFrom<StepBSplineCurveWithKnots>
+    {
+
+        private const string PIECEWISE_BEZIER_KNOTS = "PIECEWISE_BEZIER_KNOTS";
+        private const string QUASI_UNIFORM_KNOTS = "QUASI_UNIFORM_KNOTS";
+
+        private const string UNIFORM_KNOTS = "UNIFORM_KNOTS";
+        private const string UNSPECIFIED = "UNSPECIFIED";
+
+        public StepBSplineCurveWithKnots(StepModel model, IEnumerable<StepCartesianPoint> controlPoints)
+            : base(model, controlPoints) { }
+
+        public StepBSplineCurveWithKnots(StepModel model, params StepCartesianPoint[] controlPoints)
+            : base(model, controlPoints) { }
+
+        public List<int> KnotMultiplicities { get; } = new List<int>();
+
+        public List<double> Knots { get; } = new List<double>();
+
+        public override StepItemType ItemType => StepItemType.BSplineCurveWithKnots;
+
+        public StepKnotType KnotSpec { get; set; } = StepKnotType.Unspecified;
+
+        public void FromInstance(StepBSplineCurveWithKnots entity)
+        {
+            base.FromInstance(entity);
+            KnotSpec = entity.KnotSpec;
+            KnotMultiplicities.Clear();
+            KnotMultiplicities.AddRange(entity.KnotMultiplicities);
+            Knots.Clear();
+            Knots.AddRange(entity.Knots);
+        }
+
+        internal static StepBSplineCurveWithKnots FromSyntax(StepModel binder, ExpSyntaxNode syntaxList)
+        {
+            ExpNodePresidentEnumerator enumerator = syntaxList .ToPresidentEnumerator();
+            enumerator.AssertEnumeratorCount(9);
+            ExpNodePresidentEnumerator controlPointsList = enumerator[2].TupleToPresidentEnumerator(
+                );
+
+            StepBSplineCurveWithKnots spline = new StepBSplineCurveWithKnots(
+                binder, new StepCartesianPoint[controlPointsList.Count]);
+            spline.Name = (enumerator[0]as ExpStringNode)!.Value;
+            spline.Degree = (enumerator[1] as ExpIntNode)!.Value;
+
+            for (int i = 0; i < controlPointsList.Count; i++)
+            {
+                int j = i; // capture to avoid rebinding
+                spline.ControlPointsList[j] = binder[controlPointsList[j]]as StepCartesianPoint;
+            }
+
+            spline.CurveForm = ParseCurveForm(enumerator[3].CodeConvertTemplate);
+            spline.ClosedCurve = (enumerator[4] as ExpBoolNode)!.Value;
+            spline.SelfIntersect = (enumerator[5]as ExpBoolNode)!.Value;
+
+            ExpNodePresidentEnumerator knotMultiplicitiesList = enumerator[6].TupleToPresidentEnumerator(
+                );
+            spline.KnotMultiplicities.Clear();
+            for (int i = 0; i < knotMultiplicitiesList.Count; i++) {
+                spline.KnotMultiplicities.Add((knotMultiplicitiesList[i]as ExpIntNode)!.Value);
+            }
+
+            ExpNodePresidentEnumerator knotsList = enumerator[7].TupleToPresidentEnumerator();
+            spline.Knots.Clear();
+            for (int i = 0; i < knotsList.Count; i++) {
+                spline.Knots.Add((knotsList[i]as ExpRealNumberNode)!.Value);
+            }
+
+            spline.KnotSpec = ParseKnotSpec(enumerator[8].CodeConvertTemplate);
+
+            return spline;
+        }
+
+        private static string GetKnotSpec(StepKnotType spec)
+        {
+            return spec switch
+            {
+                StepKnotType.UniformKnots => UNIFORM_KNOTS,
+                StepKnotType.QuasiUniformKnots => QUASI_UNIFORM_KNOTS,
+                StepKnotType.PiecewiseBezierKnots => PIECEWISE_BEZIER_KNOTS,
+                StepKnotType.Unspecified => UNSPECIFIED,
+                _ => throw new NotImplementedException(),
+            };
+        }
+
+        private static StepKnotType ParseKnotSpec(string enumerationValue)
+        {
+            return enumerationValue.ToUpperInvariant() switch
+            {
+                UNIFORM_KNOTS => StepKnotType.UniformKnots,
+                QUASI_UNIFORM_KNOTS => StepKnotType.QuasiUniformKnots,
+                PIECEWISE_BEZIER_KNOTS => StepKnotType.PiecewiseBezierKnots,
+                _ => StepKnotType.Unspecified,
+            };
+        }
+
+    }
+}
+