init

Components/Comp_Assert.cs

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+
+using Grasshopper.Kernel; 
+using System; 
+using System.Drawing; 
+
+namespace Tenrec.Components
+{
+    public class Comp_Assert : GH_Component 
+    {
+        #region Properties
+        protected override Bitmap Icon => Properties.Resources.assert_24x24;// ValidResult ? Properties.Resources.assert_24x24 : Properties.Resources.assert2_24x24;
+        public override Guid ComponentGuid => new Guid("0a2b53e4-3d49-49b3-a8e4-92b7d2da382a");
+        public override GH_Exposure Exposure => GH_Exposure.tertiary;
+        public bool ValidResult;
+        #endregion
+
+        #region Constructors 
+        public Comp_Assert() : base("Assert", "Assert",
+            "Ensure that a condition is met or throw an error.", "Params", "Util") { }
+        #endregion
+
+        #region Methods
+        protected override void RegisterInputParams(GH_InputParamManager pManager)
+        {
+            pManager.AddBooleanParameter("Assert", "A", "True if the condition has been met", GH_ParamAccess.item);
+            pManager.AddTextParameter("Message", "M", "Assert messsage", GH_ParamAccess.item);
+            Params.Input[1].Optional = true;
+        }
+
+        protected override void RegisterOutputParams(GH_OutputParamManager pManager){ }
+
+        protected override void SolveInstance(IGH_DataAccess DA)
+        {
+            ValidResult = false;
+            string message = string.Empty;
+            if (!DA.GetData(0, ref ValidResult))
+            {
+                if(RuntimeMessageLevel == GH_RuntimeMessageLevel.Blank)
+                    AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "Assert (A) failed to collect data");
+                return;
+            }
+
+            if (!DA.GetData(1, ref message) && !ValidResult)
+                message = $"{NickName} failed.";
+
+            if(!ValidResult)
+                AddRuntimeMessage(GH_RuntimeMessageLevel.Error, message);
+        }
+        #endregion
+    }
+
+}