Fixed bug in Playground when re-constructing graph.

Author: KristofferStrube

samples/KristofferStrube.Blazor.WebAudio.WasmExample/AudioEditor/Connector.cs

@@ -81,7 +81,10 @@ public Connector(IElement element, SVGEditor.SVGEditor svg) : base(element, svg)
                 var toNode = (Node?)SVG.Elements.FirstOrDefault(e => e is Node && e.Id == Element.GetAttribute("data-to-node"));
                 ulong toPort = (ulong)Element.GetAttributeOrZero("data-to-port");
                 AudioParam? toAudioParam = null;
-                _ = toNode?.AudioParams.TryGetValue(Element.GetAttribute("data-to-audioparam")!, out toAudioParam);
+                if (Element.GetAttribute("data-to-audioparam") is { } toAttribute)
+                {
+                    _ = (toNode?.AudioParams.TryGetValue(toAttribute, out toAudioParam));
+                }
                 _ = toNode?.OutgoingConnectors.Add((this, toPort));
                 to = toNode is null ? null : (toNode, toPort, toAudioParam);
             }

samples/KristofferStrube.Blazor.WebAudio.WasmExample/AudioEditor/Nodes/Oscillator.cs

@@ -19,6 +19,10 @@ public Oscillator(IElement element, SVGEditor.SVGEditor svg) : base(element, svg
             {
                 options.Frequency = f;
             }
+            if (Type is { } t)
+            {
+                options.Type = t;
+            }
             OscillatorNode oscillator = await OscillatorNode.CreateAsync(context.JSRuntime, context, options);
             await oscillator.StartAsync();
             audioNode = oscillator;