Cesium polyline collection, , Polylines are added and removed from the collection using PolylineCollection#add and PolylineCollection#remove. Polylines are added and removed from the collection using PolylineCollection#add and PolylineCollection#remove. , The 4x4 transformation matrix that transforms each polyline in this collection from model to world coordinates. When this is the identity matrix, the polylines are drawn in 4x4 转换矩阵，用于将此集合中的每条折线从模型转换为世界坐标。 当这是单位矩阵时，折线以世界坐标 (即地球的 WGS84 坐标)绘制。 可以通过提供不同的转 The 4x4 transformation matrix that transforms each polyline in this collection from model to world coordinates. Gets or sets the width of the polyline. , polylines that do not change should be in one collection; polylines that change every frame should be modelMatrix : Matrix4 The 4x4 transformation matrix that transforms each polyline in this collection from model to world coordinates. The added polyline is returned so it can be modified or removed from the collection later. When this is the identity matrix, the polylines are The 4x4 transformation matrix that transforms each polyline in this collection from model to world coordinates. In the demo you linked, the code there is creating Use this to hide or show a polyline, instead of removing it and re-adding it to the collection. For best performance, Scene/PolylineCollection. , polylines that do not change should be in one collection; polylines that change every frame should be positions: Cesium. , Performance: After calling remove, PolylineCollection#update is called and the collection's vertex buffer is rewritten - an O(n) operation that also incurs CPU to Organize collections so that polylines with the same update frequency are in the same collection, i. , Performance: After calling remove, PolylineCollection#update is called and the collection's vertex buffer is rewritten - an O(n) operation that also incurs CPU to GPU overhead. fromDegreesArray([-75, 35, -125, 35]), width: 5,. When this is the The 4x4 transformation matrix that transforms each polyline in this collection from model to world coordinates. add (polyline) → Polyline Creates and adds a polyline with the specified initial properties to the collection. Determines if this polyline will be shown. The added polyline is returned so it can be modified or removed from the collection later. Cartesian3. js 137 The 4x4 transformation matrix that transforms each polyline in this collection from model to world coordinates. js 128 The 4x4 transformation matrix that transforms each polyline in this collection from model to world coordinates. The 4x4 transformation matrix that transforms each polyline in this collection from model to world coordinates. Use this to hide or show a polyline, instead of removing it and re-adding it to the collection. width : Number Methods add Creates and adds a polyline with the specified initial properties to the collection. e. But sometimes, you have such a large collection of static primitives that it's more performant to simply submit that collection directly. Need help? The fastest way to get answers is from the community and team The Primitive layer is for graphics primitives: A whole collection of polylines is effectively a single graphics primitive (internally, a single "draw call"), a collection of billboards is another single primitive, The 4x4 transformation matrix that transforms each polyline in this collection from model to world coordinates. When this is the identity matrix, the polylines are drawn in world coordinates, i. js 125 Determines if this polyline will be shown. 4x4转换矩阵，用于将此集合中的每个多段线从模型转换为世界坐标。 当这是单位矩阵时，多段线以世界坐标系绘制，即地球的WGS84坐标系。 局部参考帧可以通过提供不同的转换矩阵来使用，就像返回 Organize collections so that polylines with the same update frequency are in the same collection, i. Scene/Polyline. When this is the identity matrix, the polylines are drawn in world Scene/PolylineCollection. When this is the identity matrix, the polylines are drawn in Determines if this polyline will be shown. Scene/PolylineCollection.
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