feat(visualizer): R2 lava tuning — flat fluid, melt, up+out throw, heat-driven turbulence, waveform-width knob

DeepDrftPublic.Client/Controls/MixVisualizerControls.razor

@@ -18,10 +18,13 @@
 <div class="mix-visualizer-controls">
 
     @* RadialKnob exposes no aria-label/attribute-capture and is out of scope to modify, so the
-       accessible name rides on the wrapping group div instead (a plain element accepts it). *@
-    <div class="mix-visualizer-control" role="group" aria-label="Resolution (visible time-span)">
-        <RadialKnob Value="@ResolutionFraction"
-                    ValueChanged="@OnResolutionChanged"
+       accessible name rides on the wrapping group div instead (a plain element accepts it).
+       R2 TEMP: this knob is repurposed from resolution/zoom to WAVEFORM WIDTH for in-browser lava
+       testing (scroll speed isn't critical for evaluating the lava). The on-screen icon still reads
+       ZoomIn; R4 redraws the controls and restores the resolution mapping. *@
+    <div class="mix-visualizer-control" role="group" aria-label="Waveform width (R2 temp: on the resolution knob)">
+        <RadialKnob Value="@ControlState.WaveformWidth"
+                    ValueChanged="@OnWaveformWidthChanged"
                     Min="0"
                     Max="1"
                     Step="0.001"
@@ -66,13 +69,11 @@
 </div>
 
 @code {
-    // Resolution rides the log mapping (knob fraction [0,1] ↔ visible seconds); the other three are
-    // already normalized [0,1] and bind to their state properties directly.
-    private double ResolutionFraction => MixZoomMapping.SecondsToFraction(ControlState.VisibleSeconds);
-
-    private void OnResolutionChanged(double fraction)
+    // R2 TEMP: the resolution knob is repurposed to WAVEFORM WIDTH (already normalized [0,1], binds
+    // directly). R4 restores the log zoom mapping (MixZoomMapping) and gives width its own knob.
+    private void OnWaveformWidthChanged(double value)
     {
-        ControlState.VisibleSeconds = MixZoomMapping.FractionToSeconds(fraction);
+        ControlState.WaveformWidth = value;
         ControlState.NotifyChanged();
     }