Increasing "tracer" brightness envelope. Renaming fade to brightnessThreshold

index.html

@@ -48,7 +48,7 @@
         },
         cycleSpeed: 0.05,
         cycleStyle: "cycleFasterWhenDimmed",
-        fade: true,
+        brightnessThreshold: 0,
         fallSpeed: 0.05,
         font: fonts.coptic,
         glyphEdgeCrop: 0.0,
@@ -75,7 +75,7 @@
         },
         cycleSpeed: 0.02,
         cycleStyle: "cycleFasterWhenDimmed",
-        fade: true,
+        brightnessThreshold: 0,
         fallSpeed: 2.0,
         font: fonts.gothic,
         glyphEdgeCrop: 0.0,
@@ -102,7 +102,7 @@
         },
         cycleSpeed: 1,
         cycleStyle: "cycleFasterWhenDimmed",
-        fade: true,
+        brightnessThreshold: 0,
         fallSpeed: 1,
         font: fonts.matrixcode,
         glyphEdgeCrop: 0.0,
@@ -141,7 +141,7 @@
         },
         cycleSpeed: 0.4,
         cycleStyle: "cycleRandomly",
-        fade: false,
+        brightnessThreshold: 0.6375,
         fallSpeed: 0.6,
         font: fonts.matrixcode,
         glyphEdgeCrop: 0.15,
@@ -185,7 +185,7 @@
     const slant = parseFloat(getParam(["slant", "angle"], version.slant)) * Math.PI / 180;
     const glyphEdgeCrop = parseFloat(getParam("encroach", version.glyphEdgeCrop));
     const glyphHeightToWidth = parseFloat(getParam("stretch", version.glyphHeightToWidth));
-    const fade = getParam("fade", version.fade).toString() == "true";
+    const brightnessThreshold = getParam("brightnessThreshold", version.brightnessThreshold);
 
     const effect = getParam("effect", "plain");
 
@@ -204,7 +204,7 @@
     const matrixRenderer = makeMatrixRenderer(renderer, {
       animationSpeed, fallSpeed, cycleSpeed,
       cycleStyle: version.cycleStyle,
-      fade,
+      brightnessThreshold,
       fontTexture,
       glyphSequenceLength: version.font.sequenceLength,
       glyphEdgeCrop,