add color and filter to tags

2015-07-20 20:50:54 -03:00
parent a79e05d159
commit 42725692c2
7 changed files with 398 additions and 56 deletions
@@ -0,0 +1,21 @@
+class ScaleLog {
+    constructor (options) {
+        options = options || {};
+        this.minSize = options.minSize || 1.2;
+        this.maxSize = options.maxSize || 5;
+        this.unit = options.unit || '';
+        this.min = (options.min || 1);
+        this.max = (options.max || 50);
+
+        this.scale = (this.max - this.min) / (this.maxSize - this.minSize);
+    }
+
+    value (qty) {
+        return (qty === this.min ? this.minSize : (qty / this.max) * (this.maxSize - this.minSize) + this.minSize).toFixed(2) + this.unit;
+        //Math.exp((position - this.minSize) * this.scale + this.min);
+    }
+}
+
+// Usage: new LogSlider({  min: 10, max: 100 });
+
+module.exports = ScaleLog;