Method viewerMounted

docs/app/js/sanddance-app.js:14461–14466

(glDiv)

            });
        }
        viewerMounted(glDiv) {
            this.setState({
                size: this.getLayoutDivSize(this.state.sidebarPinned, this.state.sidebarClosed),
                signalValues: this.state.signalValues //keep initialized signalValues
            });
        }
        getLayoutDivSize(pinned, closed) {
            const div = pinned && !closed ? this.layoutDivPinned : this.layoutDivUnpinned;
            return {