{"version":3,"file":"createVectorTilePoints.js","sources":["../../../../Source/WorkersES6/createVectorTilePoints.js"],"sourcesContent":["import AttributeCompression from \"../Core/AttributeCompression.js\";\nimport Cartesian3 from \"../Core/Cartesian3.js\";\nimport Cartographic from \"../Core/Cartographic.js\";\nimport Ellipsoid from \"../Core/Ellipsoid.js\";\nimport CesiumMath from \"../Core/Math.js\";\nimport Rectangle from \"../Core/Rectangle.js\";\nimport createTaskProcessorWorker from \"./createTaskProcessorWorker.js\";\n\nconst maxShort = 32767;\n\nconst scratchBVCartographic = new Cartographic();\nconst scratchEncodedPosition = new Cartesian3();\n\nconst scratchRectangle = new Rectangle();\nconst scratchEllipsoid = new Ellipsoid();\nconst scratchMinMaxHeights = {\n  min: undefined,\n  max: undefined,\n};\n\nfunction unpackBuffer(packedBuffer) {\n  packedBuffer = new Float64Array(packedBuffer);\n\n  let offset = 0;\n  scratchMinMaxHeights.min = packedBuffer[offset++];\n  scratchMinMaxHeights.max = packedBuffer[offset++];\n\n  Rectangle.unpack(packedBuffer, offset, scratchRectangle);\n  offset += Rectangle.packedLength;\n\n  Ellipsoid.unpack(packedBuffer, offset, scratchEllipsoid);\n}\n\nfunction createVectorTilePoints(parameters, transferableObjects) {\n  const positions = new Uint16Array(parameters.positions);\n\n  unpackBuffer(parameters.packedBuffer);\n  const rectangle = scratchRectangle;\n  const ellipsoid = scratchEllipsoid;\n  const minimumHeight = scratchMinMaxHeights.min;\n  const maximumHeight = scratchMinMaxHeights.max;\n\n  const positionsLength = positions.length / 3;\n  const uBuffer = positions.subarray(0, positionsLength);\n  const vBuffer = positions.subarray(positionsLength, 2 * positionsLength);\n  const heightBuffer = positions.subarray(\n    2 * positionsLength,\n    3 * positionsLength\n  );\n  AttributeCompression.zigZagDeltaDecode(uBuffer, vBuffer, heightBuffer);\n\n  const decoded = new Float64Array(positions.length);\n  for (let i = 0; i < positionsLength; ++i) {\n    const u = uBuffer[i];\n    const v = vBuffer[i];\n    const h = heightBuffer[i];\n\n    const lon = CesiumMath.lerp(rectangle.west, rectangle.east, u / maxShort);\n    const lat = CesiumMath.lerp(rectangle.south, rectangle.north, v / maxShort);\n    const alt = CesiumMath.lerp(minimumHeight, maximumHeight, h / maxShort);\n\n    const cartographic = Cartographic.fromRadians(\n      lon,\n      lat,\n      alt,\n      scratchBVCartographic\n    );\n    const decodedPosition = ellipsoid.cartographicToCartesian(\n      cartographic,\n      scratchEncodedPosition\n    );\n    Cartesian3.pack(decodedPosition, decoded, i * 3);\n  }\n\n  transferableObjects.push(decoded.buffer);\n\n  return {\n    positions: decoded.buffer,\n  };\n}\nexport default createTaskProcessorWorker(createVectorTilePoints);\n"],"names":["Cartographic","Cartesian3","Rectangle","Ellipsoid","AttributeCompression","CesiumMath"],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;EAQA,MAAM,QAAQ,GAAG,KAAK,CAAC;AACvB;EACA,MAAM,qBAAqB,GAAG,IAAIA,oBAAY,EAAE,CAAC;EACjD,MAAM,sBAAsB,GAAG,IAAIC,kBAAU,EAAE,CAAC;AAChD;EACA,MAAM,gBAAgB,GAAG,IAAIC,iBAAS,EAAE,CAAC;EACzC,MAAM,gBAAgB,GAAG,IAAIC,iBAAS,EAAE,CAAC;EACzC,MAAM,oBAAoB,GAAG;EAC7B,EAAE,GAAG,EAAE,SAAS;EAChB,EAAE,GAAG,EAAE,SAAS;EAChB,CAAC,CAAC;AACF;EACA,SAAS,YAAY,CAAC,YAAY,EAAE;EACpC,EAAE,YAAY,GAAG,IAAI,YAAY,CAAC,YAAY,CAAC,CAAC;AAChD;EACA,EAAE,IAAI,MAAM,GAAG,CAAC,CAAC;EACjB,EAAE,oBAAoB,CAAC,GAAG,GAAG,YAAY,CAAC,MAAM,EAAE,CAAC,CAAC;EACpD,EAAE,oBAAoB,CAAC,GAAG,GAAG,YAAY,CAAC,MAAM,EAAE,CAAC,CAAC;AACpD;EACA,EAAED,iBAAS,CAAC,MAAM,CAAC,YAAY,EAAE,MAAM,EAAE,gBAAgB,CAAC,CAAC;EAC3D,EAAE,MAAM,IAAIA,iBAAS,CAAC,YAAY,CAAC;AACnC;EACA,EAAEC,iBAAS,CAAC,MAAM,CAAC,YAAY,EAAE,MAAM,EAAE,gBAAgB,CAAC,CAAC;EAC3D,CAAC;AACD;EACA,SAAS,sBAAsB,CAAC,UAAU,EAAE,mBAAmB,EAAE;EACjE,EAAE,MAAM,SAAS,GAAG,IAAI,WAAW,CAAC,UAAU,CAAC,SAAS,CAAC,CAAC;AAC1D;EACA,EAAE,YAAY,CAAC,UAAU,CAAC,YAAY,CAAC,CAAC;EACxC,EAAE,MAAM,SAAS,GAAG,gBAAgB,CAAC;EACrC,EAAE,MAAM,SAAS,GAAG,gBAAgB,CAAC;EACrC,EAAE,MAAM,aAAa,GAAG,oBAAoB,CAAC,GAAG,CAAC;EACjD,EAAE,MAAM,aAAa,GAAG,oBAAoB,CAAC,GAAG,CAAC;AACjD;EACA,EAAE,MAAM,eAAe,GAAG,SAAS,CAAC,MAAM,GAAG,CAAC,CAAC;EAC/C,EAAE,MAAM,OAAO,GAAG,SAAS,CAAC,QAAQ,CAAC,CAAC,EAAE,eAAe,CAAC,CAAC;EACzD,EAAE,MAAM,OAAO,GAAG,SAAS,CAAC,QAAQ,CAAC,eAAe,EAAE,CAAC,GAAG,eAAe,CAAC,CAAC;EAC3E,EAAE,MAAM,YAAY,GAAG,SAAS,CAAC,QAAQ;EACzC,IAAI,CAAC,GAAG,eAAe;EACvB,IAAI,CAAC,GAAG,eAAe;EACvB,GAAG,CAAC;EACJ,EAAEC,yCAAoB,CAAC,iBAAiB,CAAC,OAAO,EAAE,OAAO,EAAE,YAAY,CAAC,CAAC;AACzE;EACA,EAAE,MAAM,OAAO,GAAG,IAAI,YAAY,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC;EACrD,EAAE,KAAK,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,GAAG,eAAe,EAAE,EAAE,CAAC,EAAE;EAC5C,IAAI,MAAM,CAAC,GAAG,OAAO,CAAC,CAAC,CAAC,CAAC;EACzB,IAAI,MAAM,CAAC,GAAG,OAAO,CAAC,CAAC,CAAC,CAAC;EACzB,IAAI,MAAM,CAAC,GAAG,YAAY,CAAC,CAAC,CAAC,CAAC;AAC9B;EACA,IAAI,MAAM,GAAG,GAAGC,4BAAU,CAAC,IAAI,CAAC,SAAS,CAAC,IAAI,EAAE,SAAS,CAAC,IAAI,EAAE,CAAC,GAAG,QAAQ,CAAC,CAAC;EAC9E,IAAI,MAAM,GAAG,GAAGA,4BAAU,CAAC,IAAI,CAAC,SAAS,CAAC,KAAK,EAAE,SAAS,CAAC,KAAK,EAAE,CAAC,GAAG,QAAQ,CAAC,CAAC;EAChF,IAAI,MAAM,GAAG,GAAGA,4BAAU,CAAC,IAAI,CAAC,aAAa,EAAE,aAAa,EAAE,CAAC,GAAG,QAAQ,CAAC,CAAC;AAC5E;EACA,IAAI,MAAM,YAAY,GAAGL,oBAAY,CAAC,WAAW;EACjD,MAAM,GAAG;EACT,MAAM,GAAG;EACT,MAAM,GAAG;EACT,MAAM,qBAAqB;EAC3B,KAAK,CAAC;EACN,IAAI,MAAM,eAAe,GAAG,SAAS,CAAC,uBAAuB;EAC7D,MAAM,YAAY;EAClB,MAAM,sBAAsB;EAC5B,KAAK,CAAC;EACN,IAAIC,kBAAU,CAAC,IAAI,CAAC,eAAe,EAAE,OAAO,EAAE,CAAC,GAAG,CAAC,CAAC,CAAC;EACrD,GAAG;AACH;EACA,EAAE,mBAAmB,CAAC,IAAI,CAAC,OAAO,CAAC,MAAM,CAAC,CAAC;AAC3C;EACA,EAAE,OAAO;EACT,IAAI,SAAS,EAAE,OAAO,CAAC,MAAM;EAC7B,GAAG,CAAC;EACJ,CAAC;AACD,iCAAe,yBAAyB,CAAC,sBAAsB,CAAC;;;;;;;;"}