| 1 |
- {"ast":null,"code":"import { GreasedLinePluginMaterial } from \"../../Materials/GreasedLine/greasedLinePluginMaterial.js\";\nimport { Mesh } from \"../mesh.js\";\nimport { Buffer } from \"../../Buffers/buffer.js\";\nimport { VertexData } from \"../mesh.vertexData.js\";\nimport { DeepCopier } from \"../../Misc/deepCopier.js\";\nimport { GreasedLineSimpleMaterial } from \"../../Materials/GreasedLine/greasedLineSimpleMaterial.js\";\nimport { GreasedLineTools } from \"../../Misc/greasedLineTools.js\";\n/**\n * In POINTS_MODE_POINTS every array of points will become the center (backbone) of the ribbon. The ribbon will be expanded by `width / 2` to `+direction` and `-direction` as well.\n * In POINTS_MODE_PATHS every array of points specifies an edge. These will be used to build one ribbon.\n */\nexport var GreasedLineRibbonPointsMode;\n(function (GreasedLineRibbonPointsMode) {\n GreasedLineRibbonPointsMode[GreasedLineRibbonPointsMode[\"POINTS_MODE_POINTS\"] = 0] = \"POINTS_MODE_POINTS\";\n GreasedLineRibbonPointsMode[GreasedLineRibbonPointsMode[\"POINTS_MODE_PATHS\"] = 1] = \"POINTS_MODE_PATHS\";\n})(GreasedLineRibbonPointsMode || (GreasedLineRibbonPointsMode = {}));\n/**\n * FACES_MODE_SINGLE_SIDED single sided with back face culling. Default value.\n * FACES_MODE_SINGLE_SIDED_NO_BACKFACE_CULLING single sided without back face culling. Sets backFaceCulling = false on the material so it affects all line ribbons added to the line ribbon instance.\n * FACES_MODE_DOUBLE_SIDED extra back faces are created. This doubles the amount of faces of the mesh.\n */\nexport var GreasedLineRibbonFacesMode;\n(function (GreasedLineRibbonFacesMode) {\n GreasedLineRibbonFacesMode[GreasedLineRibbonFacesMode[\"FACES_MODE_SINGLE_SIDED\"] = 0] = \"FACES_MODE_SINGLE_SIDED\";\n GreasedLineRibbonFacesMode[GreasedLineRibbonFacesMode[\"FACES_MODE_SINGLE_SIDED_NO_BACKFACE_CULLING\"] = 1] = \"FACES_MODE_SINGLE_SIDED_NO_BACKFACE_CULLING\";\n GreasedLineRibbonFacesMode[GreasedLineRibbonFacesMode[\"FACES_MODE_DOUBLE_SIDED\"] = 2] = \"FACES_MODE_DOUBLE_SIDED\";\n})(GreasedLineRibbonFacesMode || (GreasedLineRibbonFacesMode = {}));\n/**\n * Only with POINTS_MODE_PATHS.\n * AUTO_DIRECTIONS_FROM_FIRST_SEGMENT sets the direction (slope) of the ribbon from the direction of the first line segment. Recommended.\n * AUTO_DIRECTIONS_FROM_ALL_SEGMENTS in this mode the direction (slope) will be calculated for each line segment according to the direction vector between each point of the line segments. Slow method.\n * AUTO_DIRECTIONS_ENHANCED in this mode the direction (slope) will be calculated for each line segment according to the direction vector between each point of the line segments using a more sophisitcaed algorithm. Slowest method.\n * AUTO_DIRECTIONS_FACE_TO in this mode the direction (slope) will be calculated for each line segment according to the direction vector between each point of the line segments and a direction (face-to) vector specified in direction. The resulting line will face to the direction of this face-to vector.\n * AUTO_DIRECTIONS_NONE you have to set the direction (slope) manually. Recommended.\n */\nexport var GreasedLineRibbonAutoDirectionMode;\n(function (GreasedLineRibbonAutoDirectionMode) {\n GreasedLineRibbonAutoDirectionMode[GreasedLineRibbonAutoDirectionMode[\"AUTO_DIRECTIONS_FROM_FIRST_SEGMENT\"] = 0] = \"AUTO_DIRECTIONS_FROM_FIRST_SEGMENT\";\n GreasedLineRibbonAutoDirectionMode[GreasedLineRibbonAutoDirectionMode[\"AUTO_DIRECTIONS_FROM_ALL_SEGMENTS\"] = 1] = \"AUTO_DIRECTIONS_FROM_ALL_SEGMENTS\";\n GreasedLineRibbonAutoDirectionMode[GreasedLineRibbonAutoDirectionMode[\"AUTO_DIRECTIONS_ENHANCED\"] = 2] = \"AUTO_DIRECTIONS_ENHANCED\";\n GreasedLineRibbonAutoDirectionMode[GreasedLineRibbonAutoDirectionMode[\"AUTO_DIRECTIONS_FACE_TO\"] = 3] = \"AUTO_DIRECTIONS_FACE_TO\";\n GreasedLineRibbonAutoDirectionMode[GreasedLineRibbonAutoDirectionMode[\"AUTO_DIRECTIONS_NONE\"] = 99] = \"AUTO_DIRECTIONS_NONE\";\n})(GreasedLineRibbonAutoDirectionMode || (GreasedLineRibbonAutoDirectionMode = {}));\n/**\n * GreasedLineBaseMesh\n */\nexport class GreasedLineBaseMesh extends Mesh {\n constructor(name, scene, _options) {\n var _options$lazy, _options$updatable, _options$colorPointer, _options$widths;\n super(name, scene, null, null, false, false);\n this.name = name;\n this._options = _options;\n this._lazy = false;\n this._updatable = false;\n this._engine = scene.getEngine();\n this._lazy = (_options$lazy = _options.lazy) !== null && _options$lazy !== void 0 ? _options$lazy : false;\n this._updatable = (_options$updatable = _options.updatable) !== null && _options$updatable !== void 0 ? _options$updatable : false;\n this._vertexPositions = [];\n this._indices = [];\n this._uvs = [];\n this._points = [];\n this._colorPointers = (_options$colorPointer = _options.colorPointers) !== null && _options$colorPointer !== void 0 ? _options$colorPointer : [];\n this._widths = (_options$widths = _options.widths) !== null && _options$widths !== void 0 ? _options$widths : new Array(_options.points.length).fill(1);\n }\n /**\n * \"GreasedLineMesh\"\n * @returns \"GreasedLineMesh\"\n */\n getClassName() {\n return \"GreasedLineMesh\";\n }\n _updateWidthsWithValue(defaulValue) {\n let pointCount = 0;\n for (const points of this._points) {\n pointCount += points.length;\n }\n const countDiff = pointCount / 3 * 2 - this._widths.length;\n for (let i = 0; i < countDiff; i++) {\n this._widths.push(defaulValue);\n }\n }\n /**\n * Updated a lazy line. Rerenders the line and updates boundinfo as well.\n */\n updateLazy() {\n var _this$_options$ribbon, _this$greasedLineMate;\n this._setPoints(this._points);\n if (!this._options.colorPointers) {\n this._updateColorPointers();\n }\n this._createVertexBuffers((_this$_options$ribbon = this._options.ribbonOptions) === null || _this$_options$ribbon === void 0 ? void 0 : _this$_options$ribbon.smoothShading);\n !this.doNotSyncBoundingInfo && this.refreshBoundingInfo();\n (_this$greasedLineMate = this.greasedLineMaterial) === null || _this$greasedLineMate === void 0 || _this$greasedLineMate.updateLazy();\n }\n /**\n * Adds new points to the line. It doesn't rerenders the line if in lazy mode.\n * @param points points table\n * @param options optional options\n */\n addPoints(points, options) {\n for (const p of points) {\n this._points.push(p);\n }\n if (!this._lazy) {\n this.setPoints(this._points, options);\n }\n }\n /**\n * Dispose the line and it's resources\n * @param doNotRecurse Set to true to not recurse into each children (recurse into each children by default)\n * @param disposeMaterialAndTextures Set to true to also dispose referenced materials and textures (false by default)\n */\n dispose(doNotRecurse, disposeMaterialAndTextures = false) {\n super.dispose(doNotRecurse, disposeMaterialAndTextures);\n }\n /**\n * @returns true if the mesh was created in lazy mode\n */\n isLazy() {\n return this._lazy;\n }\n /**\n * Returns the UVs\n */\n get uvs() {\n return this._uvs;\n }\n /**\n * Sets the UVs\n * @param uvs the UVs\n */\n set uvs(uvs) {\n this._uvs = uvs instanceof Float32Array ? uvs : new Float32Array(uvs);\n this._createVertexBuffers();\n }\n /**\n * Returns the points offsets\n * Return the points offsets\n */\n get offsets() {\n return this._offsets;\n }\n /**\n * Sets point offests\n * @param offsets offset table [x,y,z, x,y,z, ....]\n */\n set offsets(offsets) {\n this._offsets = offsets;\n if (!this._offsetsBuffer) {\n this._createOffsetsBuffer(offsets);\n } else {\n this._offsetsBuffer.update(offsets);\n }\n }\n /**\n * Gets widths at each line point like [widthLower, widthUpper, widthLower, widthUpper, ...]\n */\n get widths() {\n return this._widths;\n }\n /**\n * Sets widths at each line point\n * @param widths width table [widthLower, widthUpper, widthLower, widthUpper ...]\n */\n set widths(widths) {\n this._widths = widths;\n if (!this._lazy) {\n this._widthsBuffer && this._widthsBuffer.update(widths);\n }\n }\n /**\n * Gets the color pointer. Each vertex need a color pointer. These color pointers points to the colors in the color table @see colors\n */\n get colorPointers() {\n return this._colorPointers;\n }\n /**\n * Sets the color pointer\n * @param colorPointers array of color pointer in the colors array. One pointer for every vertex is needed.\n */\n set colorPointers(colorPointers) {\n this._colorPointers = colorPointers;\n if (!this._lazy) {\n this._colorPointersBuffer && this._colorPointersBuffer.update(colorPointers);\n }\n }\n /**\n * Gets the pluginMaterial associated with line\n */\n get greasedLineMaterial() {\n var _this$material;\n if (this.material && this.material instanceof GreasedLineSimpleMaterial) {\n return this.material;\n }\n const materialPlugin = (_this$material = this.material) === null || _this$material === void 0 || (_this$material = _this$material.pluginManager) === null || _this$material === void 0 ? void 0 : _this$material.getPlugin(GreasedLinePluginMaterial.GREASED_LINE_MATERIAL_NAME);\n if (materialPlugin) {\n return materialPlugin;\n }\n return;\n }\n /**\n * Return copy the points.\n */\n get points() {\n const pointsCopy = [];\n DeepCopier.DeepCopy(this._points, pointsCopy);\n return pointsCopy;\n }\n /**\n * Sets line points and rerenders the line.\n * @param points points table\n * @param options optional options\n */\n setPoints(points, options) {\n var _options$pointsOption;\n this._points = GreasedLineTools.ConvertPoints(points, (_options$pointsOption = options === null || options === void 0 ? void 0 : options.pointsOptions) !== null && _options$pointsOption !== void 0 ? _options$pointsOption : this._options.pointsOptions);\n this._updateWidths();\n if (!(options !== null && options !== void 0 && options.colorPointers)) {\n this._updateColorPointers();\n }\n this._setPoints(this._points, options);\n }\n _initGreasedLine() {\n this._vertexPositions = [];\n this._indices = [];\n this._uvs = [];\n }\n _createLineOptions() {\n const lineOptions = {\n points: this._points,\n colorPointers: this._colorPointers,\n lazy: this._lazy,\n updatable: this._updatable,\n uvs: this._uvs,\n widths: this._widths,\n ribbonOptions: this._options.ribbonOptions\n };\n return lineOptions;\n }\n /**\n * Serializes this GreasedLineMesh\n * @param serializationObject object to write serialization to\n */\n serialize(serializationObject) {\n super.serialize(serializationObject);\n serializationObject.type = this.getClassName();\n serializationObject.lineOptions = this._createLineOptions();\n }\n _createVertexBuffers(computeNormals = false) {\n const vertexData = new VertexData();\n vertexData.positions = this._vertexPositions;\n vertexData.indices = this._indices;\n vertexData.uvs = this._uvs;\n if (computeNormals) {\n vertexData.normals = [];\n VertexData.ComputeNormals(this._vertexPositions, this._indices, vertexData.normals);\n }\n vertexData.applyToMesh(this, this._options.updatable);\n return vertexData;\n }\n _createOffsetsBuffer(offsets) {\n const engine = this._scene.getEngine();\n const offsetBuffer = new Buffer(engine, offsets, this._updatable, 3);\n this.setVerticesBuffer(offsetBuffer.createVertexBuffer(\"grl_offsets\", 0, 3));\n this._offsetsBuffer = offsetBuffer;\n }\n}","map":{"version":3,"names":["GreasedLinePluginMaterial","Mesh","Buffer","VertexData","DeepCopier","GreasedLineSimpleMaterial","GreasedLineTools","GreasedLineRibbonPointsMode","GreasedLineRibbonFacesMode","GreasedLineRibbonAutoDirectionMode","GreasedLineBaseMesh","constructor","name","scene","_options","_options$lazy","_options$updatable","_options$colorPointer","_options$widths","_lazy","_updatable","_engine","getEngine","lazy","updatable","_vertexPositions","_indices","_uvs","_points","_colorPointers","colorPointers","_widths","widths","Array","points","length","fill","getClassName","_updateWidthsWithValue","defaulValue","pointCount","countDiff","i","push","updateLazy","_this$_options$ribbon","_this$greasedLineMate","_setPoints","_updateColorPointers","_createVertexBuffers","ribbonOptions","smoothShading","doNotSyncBoundingInfo","refreshBoundingInfo","greasedLineMaterial","addPoints","options","p","setPoints","dispose","doNotRecurse","disposeMaterialAndTextures","isLazy","uvs","Float32Array","offsets","_offsets","_offsetsBuffer","_createOffsetsBuffer","update","_widthsBuffer","_colorPointersBuffer","_this$material","material","materialPlugin","pluginManager","getPlugin","GREASED_LINE_MATERIAL_NAME","pointsCopy","DeepCopy","_options$pointsOption","ConvertPoints","pointsOptions","_updateWidths","_initGreasedLine","_createLineOptions","lineOptions","serialize","serializationObject","type","computeNormals","vertexData","positions","indices","normals","ComputeNormals","applyToMesh","engine","_scene","offsetBuffer","setVerticesBuffer","createVertexBuffer"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/Meshes/GreasedLine/greasedLineBaseMesh.js"],"sourcesContent":["import { GreasedLinePluginMaterial } from \"../../Materials/GreasedLine/greasedLinePluginMaterial.js\";\nimport { Mesh } from \"../mesh.js\";\nimport { Buffer } from \"../../Buffers/buffer.js\";\nimport { VertexData } from \"../mesh.vertexData.js\";\nimport { DeepCopier } from \"../../Misc/deepCopier.js\";\nimport { GreasedLineSimpleMaterial } from \"../../Materials/GreasedLine/greasedLineSimpleMaterial.js\";\nimport { GreasedLineTools } from \"../../Misc/greasedLineTools.js\";\n/**\n * In POINTS_MODE_POINTS every array of points will become the center (backbone) of the ribbon. The ribbon will be expanded by `width / 2` to `+direction` and `-direction` as well.\n * In POINTS_MODE_PATHS every array of points specifies an edge. These will be used to build one ribbon.\n */\nexport var GreasedLineRibbonPointsMode;\n(function (GreasedLineRibbonPointsMode) {\n GreasedLineRibbonPointsMode[GreasedLineRibbonPointsMode[\"POINTS_MODE_POINTS\"] = 0] = \"POINTS_MODE_POINTS\";\n GreasedLineRibbonPointsMode[GreasedLineRibbonPointsMode[\"POINTS_MODE_PATHS\"] = 1] = \"POINTS_MODE_PATHS\";\n})(GreasedLineRibbonPointsMode || (GreasedLineRibbonPointsMode = {}));\n/**\n * FACES_MODE_SINGLE_SIDED single sided with back face culling. Default value.\n * FACES_MODE_SINGLE_SIDED_NO_BACKFACE_CULLING single sided without back face culling. Sets backFaceCulling = false on the material so it affects all line ribbons added to the line ribbon instance.\n * FACES_MODE_DOUBLE_SIDED extra back faces are created. This doubles the amount of faces of the mesh.\n */\nexport var GreasedLineRibbonFacesMode;\n(function (GreasedLineRibbonFacesMode) {\n GreasedLineRibbonFacesMode[GreasedLineRibbonFacesMode[\"FACES_MODE_SINGLE_SIDED\"] = 0] = \"FACES_MODE_SINGLE_SIDED\";\n GreasedLineRibbonFacesMode[GreasedLineRibbonFacesMode[\"FACES_MODE_SINGLE_SIDED_NO_BACKFACE_CULLING\"] = 1] = \"FACES_MODE_SINGLE_SIDED_NO_BACKFACE_CULLING\";\n GreasedLineRibbonFacesMode[GreasedLineRibbonFacesMode[\"FACES_MODE_DOUBLE_SIDED\"] = 2] = \"FACES_MODE_DOUBLE_SIDED\";\n})(GreasedLineRibbonFacesMode || (GreasedLineRibbonFacesMode = {}));\n/**\n * Only with POINTS_MODE_PATHS.\n * AUTO_DIRECTIONS_FROM_FIRST_SEGMENT sets the direction (slope) of the ribbon from the direction of the first line segment. Recommended.\n * AUTO_DIRECTIONS_FROM_ALL_SEGMENTS in this mode the direction (slope) will be calculated for each line segment according to the direction vector between each point of the line segments. Slow method.\n * AUTO_DIRECTIONS_ENHANCED in this mode the direction (slope) will be calculated for each line segment according to the direction vector between each point of the line segments using a more sophisitcaed algorithm. Slowest method.\n * AUTO_DIRECTIONS_FACE_TO in this mode the direction (slope) will be calculated for each line segment according to the direction vector between each point of the line segments and a direction (face-to) vector specified in direction. The resulting line will face to the direction of this face-to vector.\n * AUTO_DIRECTIONS_NONE you have to set the direction (slope) manually. Recommended.\n */\nexport var GreasedLineRibbonAutoDirectionMode;\n(function (GreasedLineRibbonAutoDirectionMode) {\n GreasedLineRibbonAutoDirectionMode[GreasedLineRibbonAutoDirectionMode[\"AUTO_DIRECTIONS_FROM_FIRST_SEGMENT\"] = 0] = \"AUTO_DIRECTIONS_FROM_FIRST_SEGMENT\";\n GreasedLineRibbonAutoDirectionMode[GreasedLineRibbonAutoDirectionMode[\"AUTO_DIRECTIONS_FROM_ALL_SEGMENTS\"] = 1] = \"AUTO_DIRECTIONS_FROM_ALL_SEGMENTS\";\n GreasedLineRibbonAutoDirectionMode[GreasedLineRibbonAutoDirectionMode[\"AUTO_DIRECTIONS_ENHANCED\"] = 2] = \"AUTO_DIRECTIONS_ENHANCED\";\n GreasedLineRibbonAutoDirectionMode[GreasedLineRibbonAutoDirectionMode[\"AUTO_DIRECTIONS_FACE_TO\"] = 3] = \"AUTO_DIRECTIONS_FACE_TO\";\n GreasedLineRibbonAutoDirectionMode[GreasedLineRibbonAutoDirectionMode[\"AUTO_DIRECTIONS_NONE\"] = 99] = \"AUTO_DIRECTIONS_NONE\";\n})(GreasedLineRibbonAutoDirectionMode || (GreasedLineRibbonAutoDirectionMode = {}));\n/**\n * GreasedLineBaseMesh\n */\nexport class GreasedLineBaseMesh extends Mesh {\n constructor(name, scene, _options) {\n super(name, scene, null, null, false, false);\n this.name = name;\n this._options = _options;\n this._lazy = false;\n this._updatable = false;\n this._engine = scene.getEngine();\n this._lazy = _options.lazy ?? false;\n this._updatable = _options.updatable ?? false;\n this._vertexPositions = [];\n this._indices = [];\n this._uvs = [];\n this._points = [];\n this._colorPointers = _options.colorPointers ?? [];\n this._widths = _options.widths ?? new Array(_options.points.length).fill(1);\n }\n /**\n * \"GreasedLineMesh\"\n * @returns \"GreasedLineMesh\"\n */\n getClassName() {\n return \"GreasedLineMesh\";\n }\n _updateWidthsWithValue(defaulValue) {\n let pointCount = 0;\n for (const points of this._points) {\n pointCount += points.length;\n }\n const countDiff = (pointCount / 3) * 2 - this._widths.length;\n for (let i = 0; i < countDiff; i++) {\n this._widths.push(defaulValue);\n }\n }\n /**\n * Updated a lazy line. Rerenders the line and updates boundinfo as well.\n */\n updateLazy() {\n this._setPoints(this._points);\n if (!this._options.colorPointers) {\n this._updateColorPointers();\n }\n this._createVertexBuffers(this._options.ribbonOptions?.smoothShading);\n !this.doNotSyncBoundingInfo && this.refreshBoundingInfo();\n this.greasedLineMaterial?.updateLazy();\n }\n /**\n * Adds new points to the line. It doesn't rerenders the line if in lazy mode.\n * @param points points table\n * @param options optional options\n */\n addPoints(points, options) {\n for (const p of points) {\n this._points.push(p);\n }\n if (!this._lazy) {\n this.setPoints(this._points, options);\n }\n }\n /**\n * Dispose the line and it's resources\n * @param doNotRecurse Set to true to not recurse into each children (recurse into each children by default)\n * @param disposeMaterialAndTextures Set to true to also dispose referenced materials and textures (false by default)\n */\n dispose(doNotRecurse, disposeMaterialAndTextures = false) {\n super.dispose(doNotRecurse, disposeMaterialAndTextures);\n }\n /**\n * @returns true if the mesh was created in lazy mode\n */\n isLazy() {\n return this._lazy;\n }\n /**\n * Returns the UVs\n */\n get uvs() {\n return this._uvs;\n }\n /**\n * Sets the UVs\n * @param uvs the UVs\n */\n set uvs(uvs) {\n this._uvs = uvs instanceof Float32Array ? uvs : new Float32Array(uvs);\n this._createVertexBuffers();\n }\n /**\n * Returns the points offsets\n * Return the points offsets\n */\n get offsets() {\n return this._offsets;\n }\n /**\n * Sets point offests\n * @param offsets offset table [x,y,z, x,y,z, ....]\n */\n set offsets(offsets) {\n this._offsets = offsets;\n if (!this._offsetsBuffer) {\n this._createOffsetsBuffer(offsets);\n }\n else {\n this._offsetsBuffer.update(offsets);\n }\n }\n /**\n * Gets widths at each line point like [widthLower, widthUpper, widthLower, widthUpper, ...]\n */\n get widths() {\n return this._widths;\n }\n /**\n * Sets widths at each line point\n * @param widths width table [widthLower, widthUpper, widthLower, widthUpper ...]\n */\n set widths(widths) {\n this._widths = widths;\n if (!this._lazy) {\n this._widthsBuffer && this._widthsBuffer.update(widths);\n }\n }\n /**\n * Gets the color pointer. Each vertex need a color pointer. These color pointers points to the colors in the color table @see colors\n */\n get colorPointers() {\n return this._colorPointers;\n }\n /**\n * Sets the color pointer\n * @param colorPointers array of color pointer in the colors array. One pointer for every vertex is needed.\n */\n set colorPointers(colorPointers) {\n this._colorPointers = colorPointers;\n if (!this._lazy) {\n this._colorPointersBuffer && this._colorPointersBuffer.update(colorPointers);\n }\n }\n /**\n * Gets the pluginMaterial associated with line\n */\n get greasedLineMaterial() {\n if (this.material && this.material instanceof GreasedLineSimpleMaterial) {\n return this.material;\n }\n const materialPlugin = this.material?.pluginManager?.getPlugin(GreasedLinePluginMaterial.GREASED_LINE_MATERIAL_NAME);\n if (materialPlugin) {\n return materialPlugin;\n }\n return;\n }\n /**\n * Return copy the points.\n */\n get points() {\n const pointsCopy = [];\n DeepCopier.DeepCopy(this._points, pointsCopy);\n return pointsCopy;\n }\n /**\n * Sets line points and rerenders the line.\n * @param points points table\n * @param options optional options\n */\n setPoints(points, options) {\n this._points = GreasedLineTools.ConvertPoints(points, options?.pointsOptions ?? this._options.pointsOptions);\n this._updateWidths();\n if (!options?.colorPointers) {\n this._updateColorPointers();\n }\n this._setPoints(this._points, options);\n }\n _initGreasedLine() {\n this._vertexPositions = [];\n this._indices = [];\n this._uvs = [];\n }\n _createLineOptions() {\n const lineOptions = {\n points: this._points,\n colorPointers: this._colorPointers,\n lazy: this._lazy,\n updatable: this._updatable,\n uvs: this._uvs,\n widths: this._widths,\n ribbonOptions: this._options.ribbonOptions,\n };\n return lineOptions;\n }\n /**\n * Serializes this GreasedLineMesh\n * @param serializationObject object to write serialization to\n */\n serialize(serializationObject) {\n super.serialize(serializationObject);\n serializationObject.type = this.getClassName();\n serializationObject.lineOptions = this._createLineOptions();\n }\n _createVertexBuffers(computeNormals = false) {\n const vertexData = new VertexData();\n vertexData.positions = this._vertexPositions;\n vertexData.indices = this._indices;\n vertexData.uvs = this._uvs;\n if (computeNormals) {\n vertexData.normals = [];\n VertexData.ComputeNormals(this._vertexPositions, this._indices, vertexData.normals);\n }\n vertexData.applyToMesh(this, this._options.updatable);\n return vertexData;\n }\n _createOffsetsBuffer(offsets) {\n const engine = this._scene.getEngine();\n const offsetBuffer = new Buffer(engine, offsets, this._updatable, 3);\n this.setVerticesBuffer(offsetBuffer.createVertexBuffer(\"grl_offsets\", 0, 3));\n this._offsetsBuffer = offsetBuffer;\n 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