Merge pull request #221 from cds-astro/revert-220-fix-circle-opacity-not-working

Revert "Bug fix: opacity is now available for Circle overlays (issue #215)"

src/js/shapes/Circle.js

@@ -51,17 +51,16 @@ export let Circle = (function() {
         this.lineWidth = options["lineWidth"] || 2;
         this.selectionColor = options["selectionColor"] || '#00ff00';
         this.hoverColor = options["hoverColor"] || undefined;
-        this.opacity    = options['opacity']   || 1;
 
         // TODO : all graphic overlays should have an id
         this.id = 'circle-' + Utils.uuidv4();
 
         this.setCenter(centerRaDec);
         this.setRadius(radius);
-        this.overlay = null;
+    	this.overlay = null;
 
-        this.isShowing = true;
+    	this.isShowing = true;
-        this.isSelected = false;
+    	this.isSelected = false;
         this.isHovered = false;
         this.frame = options.frame || "icrs";
     };
@@ -268,7 +267,6 @@ export let Circle = (function() {
         }
 
         ctx.lineWidth = this.lineWidth;
-        ctx.globalAlpha = this.opacity;
         ctx.beginPath();
         ctx.arc(this.center.x, this.center.y, this.radius, 0, 2*Math.PI, false);
         if (!noStroke) {