fix(Label): rounds the projected coordinates of labels

Author: mgermerie

src/Core/Label.js

@@ -134,7 +134,11 @@ class Label extends THREE.Object3D {
     }
 
     updateCSSPosition() {
-        this.content.style[STYLE_TRANSFORM] = `translate(${this.boundaries.left + this.padding}px, ${this.boundaries.top + this.padding}px)`;
+        this.content.style[STYLE_TRANSFORM] = `translate(${
+            this.projectedPosition.x + this.offset.left
+        }px, ${
+            this.projectedPosition.y + this.offset.top
+        }px)`;
     }
 
     /**

test/unit/label.js

@@ -148,7 +148,7 @@ describe('Label', function () {
 
         label.updateProjectedPosition(10.4, 10.6);
         label.updateCSSPosition();
-        assert.equal(label.content.style.transform, 'translate(15.4px, 15.6px)');
+        assert.equal(label.content.style.transform, 'translate(15px, 16px)');
     });
 
     it('updates the horizon culling point', function () {