Use active flag instead of time

src/effects/OutlineEffect.js

@@ -196,6 +196,15 @@ export class OutlineEffect extends Effect {
 
 		this.time = 0;
 
+		/**
+		 * Indicates whether the outline effect is active.
+		 *
+		 * @type {Boolean}
+		 * @private
+		 */
+
+		this.active = false;
+
 		/**
 		 * A selection of objects that will be outlined.
 		 *
@@ -726,6 +735,7 @@ export class OutlineEffect extends Effect {
 
 			}
 
+			this.active = true;
 			this.time += deltaTime;
 
 			// Render a custom depth texture and ignore selected objects.
@@ -750,10 +760,10 @@ export class OutlineEffect extends Effect {
 
 			}
 
-		} else if(this.time > 0) {
+		} else if(this.active) {
 
 			this.clearPass.render(renderer, this.renderTargetOutline);
-			this.time = 0;
+			this.active = false;
 
 		}