Forge 查看器 isLayerVisible 始终为 false

Question

出于某种原因，我在 viewer.isLayerVisible(layerNode) 上总是出错。我遵循了本教程 https://forge.autodesk.com/blog/toggle-sheet-layer-visibility 我在 LAYER_VISIBILITY_CHANGED_EVENT 上有事件处理程序，这是我在打字稿中的代码片段：

viewer.addEventListener(Autodesk.Viewing.LAYER_VISIBILITY_CHANGED_EVENT, (e) => {
var root = viewer.model["myData"].layersRoot; //getLayersRoot() is not a function for some reason
var overlayLayer = viewer["getSelectedLayer"]();
if (viewer["layerRoot"] != undefined) {
    var layerNode = root.children.filter((e) => { return e.name === overlayLayer })
    var isLayerVisible = viewer.isLayerVisible(layerNode);
    //show layer
    if (isLayerVisible) {
        viewer.impl.addOverlay("Edit2D", viewer["savedPoints"].overlayLayer)
    }
    //hide layer
    else {
        viewer.impl.removeOverlayScene("Edit2D")
    }
}

});

关闭图层管理器中的某些图层后，我还得到 viewer.areAllVisible() 为真。

Forge 查看器版本为 7。*

你有什么建议吗？谢谢！

Answer 1

我发现您可以从 indexToLayer 查看器访问可见层和可见层属性

   var visibleLayers = Array.from(viewer.impl.layers.indexToLayer.filter(e => e != null && e.visible));

Forge 查看器 isLayerVisible 始终为 false

Forge viewer isLayerVisible is always false

viewer

forge