Add existing to tracked

node_modules/@cesium/engine/Source/Scene/BufferPolylineMaterial.js

@@ -0,0 +1,93 @@
+// @ts-check
+
+import Frozen from "../Core/Frozen.js";
+import BufferPrimitiveMaterial from "./BufferPrimitiveMaterial.js";
+
+/** @import Color from "../Core/Color.js"; */
+/** @import BufferPolyline from "./BufferPolyline.js"; */
+
+/**
+ * @typedef {object} BufferPolylineMaterialOptions
+ * @property {Color} [color=Color.WHITE] Color of fill.
+ * @property {Color} [outlineColor=Color.WHITE] Color of outline.
+ * @property {number} [outlineWidth=0.0] Width of outline, 0-255px.
+ * @property {number} [width=1.0] Width of line, 0-255px.
+ */
+
+/**
+ * Material description for a {@link BufferPolyline}.
+ *
+ * <p>BufferPolylineMaterial objects are {@link Packable|packable}, stored
+ * when calling {@link BufferPolyline#setMaterial}. Subsequent changes to the
+ * material will not affect the polyline until setMaterial() is called again.</p>
+ *
+ * @experimental This feature is not final and is subject to change without Cesium's standard deprecation policy.
+ * @extends BufferPrimitiveMaterial
+ */
+class BufferPolylineMaterial extends BufferPrimitiveMaterial {
+  /** @ignore */
+  static Layout = {
+    ...BufferPrimitiveMaterial.Layout,
+    WIDTH_U8: BufferPrimitiveMaterial.Layout.__BYTE_LENGTH,
+    __BYTE_LENGTH: BufferPrimitiveMaterial.Layout.__BYTE_LENGTH + 4,
+  };
+
+  /**
+   * @type {BufferPolylineMaterial}
+   * @ignore
+   */
+  static DEFAULT_MATERIAL = Object.freeze(new BufferPolylineMaterial());
+
+  /**
+   * @param {BufferPolylineMaterialOptions} [options]
+   */
+  constructor(options = Frozen.EMPTY_OBJECT) {
+    super(options);
+
+    /**
+     * Width of polyline, 0–255px.
+     * @type {number}
+     */
+    this.width = options.width ?? 1;
+  }
+
+  /**
+   * @param {BufferPolylineMaterial} material
+   * @param {DataView} view
+   * @param {number} byteOffset
+   * @override
+   */
+  static pack(material, view, byteOffset) {
+    super.pack(material, view, byteOffset);
+    view.setUint8(this.Layout.WIDTH_U8 + byteOffset, material.width);
+  }
+
+  /**
+   * @param {DataView} view
+   * @param {number} byteOffset
+   * @param {BufferPolylineMaterial} result
+   * @returns {BufferPolylineMaterial}
+   * @override
+   */
+  static unpack(view, byteOffset, result) {
+    super.unpack(view, byteOffset, result);
+    result.width = view.getUint8(this.Layout.WIDTH_U8 + byteOffset);
+    return result;
+  }
+
+  /////////////////////////////////////////////////////////////////////////////
+  // DEBUG
+
+  /**
+   * Returns a JSON-serializable object representing the material. This encoding
+   * is not memory-efficient, and should generally be used for debugging and
+   * testing.
+   *
+   * @returns {Object} JSON-serializable object.
+   */
+  toJSON() {
+    return { ...super.toJSON(), width: this.width };
+  }
+}
+
+export default BufferPolylineMaterial;