decodeDraco.js 40 KB

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  1. /**
  2. * Cesium - https://github.com/AnalyticalGraphicsInc/cesium
  3. *
  4. * Copyright 2011-2017 Cesium Contributors
  5. *
  6. * Licensed under the Apache License, Version 2.0 (the "License");
  7. * you may not use this file except in compliance with the License.
  8. * You may obtain a copy of the License at
  9. *
  10. * http://www.apache.org/licenses/LICENSE-2.0
  11. *
  12. * Unless required by applicable law or agreed to in writing, software
  13. * distributed under the License is distributed on an "AS IS" BASIS,
  14. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15. * See the License for the specific language governing permissions and
  16. * limitations under the License.
  17. *
  18. * Columbus View (Pat. Pend.)
  19. *
  20. * Portions licensed separately.
  21. * See https://github.com/AnalyticalGraphicsInc/cesium/blob/master/LICENSE.md for full licensing details.
  22. */
  23. /**
  24. @license
  25. when.js - https://github.com/cujojs/when
  26. MIT License (c) copyright B Cavalier & J Hann
  27. * A lightweight CommonJS Promises/A and when() implementation
  28. * when is part of the cujo.js family of libraries (http://cujojs.com/)
  29. *
  30. * Licensed under the MIT License at:
  31. * http://www.opensource.org/licenses/mit-license.php
  32. *
  33. * @version 1.7.1
  34. */
  35. /**
  36. @license
  37. mersenne-twister.js - https://gist.github.com/banksean/300494
  38. Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
  39. All rights reserved.
  40. Redistribution and use in source and binary forms, with or without
  41. modification, are permitted provided that the following conditions
  42. are met:
  43. 1. Redistributions of source code must retain the above copyright
  44. notice, this list of conditions and the following disclaimer.
  45. 2. Redistributions in binary form must reproduce the above copyright
  46. notice, this list of conditions and the following disclaimer in the
  47. documentation and/or other materials provided with the distribution.
  48. 3. The names of its contributors may not be used to endorse or promote
  49. products derived from this software without specific prior written
  50. permission.
  51. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52. "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53. LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54. A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  55. CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  56. EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  57. PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  58. PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  59. LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  60. NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  61. SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62. */
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strict";if(!E.supportsTypedArrays())return{};var T={BYTE:_.BYTE,UNSIGNED_BYTE:_.UNSIGNED_BYTE,SHORT:_.SHORT,UNSIGNED_SHORT:_.UNSIGNED_SHORT,INT:_.INT,UNSIGNED_INT:_.UNSIGNED_INT,FLOAT:_.FLOAT,DOUBLE:_.DOUBLE};return T.getSizeInBytes=function(e){switch(e){case T.BYTE:return Int8Array.BYTES_PER_ELEMENT;case T.UNSIGNED_BYTE:return Uint8Array.BYTES_PER_ELEMENT;case T.SHORT:return Int16Array.BYTES_PER_ELEMENT;case T.UNSIGNED_SHORT:return Uint16Array.BYTES_PER_ELEMENT;case T.INT:return Int32Array.BYTES_PER_ELEMENT;case T.UNSIGNED_INT:return Uint32Array.BYTES_PER_ELEMENT;case T.FLOAT:return Float32Array.BYTES_PER_ELEMENT;case T.DOUBLE:return Float64Array.BYTES_PER_ELEMENT}},T.fromTypedArray=function(e){return e instanceof Int8Array?T.BYTE:e instanceof Uint8Array?T.UNSIGNED_BYTE:e instanceof Int16Array?T.SHORT:e instanceof Uint16Array?T.UNSIGNED_SHORT:e instanceof Int32Array?T.INT:e instanceof Uint32Array?T.UNSIGNED_INT:e instanceof Float32Array?T.FLOAT:e instanceof Float64Array?T.DOUBLE:void 0},T.validate=function(e){return r(e)&&(e===T.BYTE||e===T.UNSIGNED_BYTE||e===T.SHORT||e===T.UNSIGNED_SHORT||e===T.INT||e===T.UNSIGNED_INT||e===T.FLOAT||e===T.DOUBLE)},T.createTypedArray=function(e,r){switch(e){case T.BYTE:return new Int8Array(r);case T.UNSIGNED_BYTE:return new Uint8Array(r);case T.SHORT:return new Int16Array(r);case T.UNSIGNED_SHORT:return new Uint16Array(r);case T.INT:return new Int32Array(r);case T.UNSIGNED_INT:return new Uint32Array(r);case T.FLOAT:return new Float32Array(r);case T.DOUBLE:return new Float64Array(r)}},T.createArrayBufferView=function(r,t,E,n){switch(E=e(E,0),n=e(n,(t.byteLength-E)/T.getSizeInBytes(r)),r){case T.BYTE:return new Int8Array(t,E,n);case T.UNSIGNED_BYTE:return new Uint8Array(t,E,n);case T.SHORT:return new Int16Array(t,E,n);case T.UNSIGNED_SHORT:return new Uint16Array(t,E,n);case T.INT:return new Int32Array(t,E,n);case T.UNSIGNED_INT:return new Uint32Array(t,E,n);case T.FLOAT:return new Float32Array(t,E,n);case T.DOUBLE:return new Float64Array(t,E,n)}},T.fromName=function(e){switch(e){case"BYTE":return T.BYTE;case"UNSIGNED_BYTE":return T.UNSIGNED_BYTE;case"SHORT":return T.SHORT;case"UNSIGNED_SHORT":return T.UNSIGNED_SHORT;case"INT":return T.INT;case"UNSIGNED_INT":return T.UNSIGNED_INT;case"FLOAT":return T.FLOAT;case"DOUBLE":return T.DOUBLE}},n(T)}),define("ThirdParty/mersenne-twister",[],function(){var e=function(e){void 0==e&&(e=(new Date).getTime()),this.N=624,this.M=397,this.MATRIX_A=2567483615,this.UPPER_MASK=2147483648,this.LOWER_MASK=2147483647,this.mt=new Array(this.N),this.mti=this.N+1,this.init_genrand(e)};return e.prototype.init_genrand=function(e){for(this.mt[0]=e>>>0,this.mti=1;this.mti<this.N;this.mti++){var e=this.mt[this.mti-1]^this.mt[this.mti-1]>>>30;this.mt[this.mti]=(1812433253*((4294901760&e)>>>16)<<16)+1812433253*(65535&e)+this.mti,this.mt[this.mti]>>>=0}},e.prototype.genrand_int32=function(){var e,r=new Array(0,this.MATRIX_A);if(this.mti>=this.N){var t;for(this.mti==this.N+1&&this.init_genrand(5489),t=0;t<this.N-this.M;t++)e=this.mt[t]&this.UPPER_MASK|this.mt[t+1]&this.LOWER_MASK,this.mt[t]=this.mt[t+this.M]^e>>>1^r[1&e];for(;t<this.N-1;t++)e=this.mt[t]&this.UPPER_MASK|this.mt[t+1]&this.LOWER_MASK,this.mt[t]=this.mt[t+(this.M-this.N)]^e>>>1^r[1&e];e=this.mt[this.N-1]&this.UPPER_MASK|this.mt[0]&this.LOWER_MASK,this.mt[this.N-1]=this.mt[this.M-1]^e>>>1^r[1&e],this.mti=0}return e=this.mt[this.mti++],e^=e>>>11,e^=e<<7&2636928640,e^=e<<15&4022730752,(e^=e>>>18)>>>0},e.prototype.random=function(){return this.genrand_int32()*(1/4294967296)},e}),define("Core/Check",["./defined","./DeveloperError"],function(e,r){"use strict";function t(e){return e+" is required, actual value was undefined"}function E(e,r,t){return"Expected "+t+" to be typeof "+r+", actual typeof was "+e}var n={};return n.typeOf={},n.defined=function(E,n){if(!e(n))throw new r(t(E))},n.typeOf.func=function(e,t){if("function"!=typeof t)throw new r(E(typeof t,"function",e))},n.typeOf.string=function(e,t){if("string"!=typeof t)throw new r(E(typeof t,"string",e))},n.typeOf.number=function(e,t){if("number"!=typeof t)throw new r(E(typeof t,"number",e))},n.typeOf.number.lessThan=function(e,t,E){if(n.typeOf.number(e,t),t>=E)throw new r("Expected "+e+" to be less than "+E+", actual value was "+t)},n.typeOf.number.lessThanOrEquals=function(e,t,E){if(n.typeOf.number(e,t),t>E)throw new r("Expected "+e+" to be less than or equal to "+E+", actual value was "+t)},n.typeOf.number.greaterThan=function(e,t,E){if(n.typeOf.number(e,t),t<=E)throw new r("Expected "+e+" to be greater than "+E+", actual value was "+t)},n.typeOf.number.greaterThanOrEquals=function(e,t,E){if(n.typeOf.number(e,t),t<E)throw new r("Expected "+e+" to be greater than or equal to"+E+", actual value was "+t)},n.typeOf.object=function(e,t){if("object"!=typeof t)throw new r(E(typeof t,"object",e))},n.typeOf.bool=function(e,t){if("boolean"!=typeof t)throw new r(E(typeof t,"boolean",e))},n.typeOf.number.equals=function(e,t,E,_){if(n.typeOf.number(e,E),n.typeOf.number(t,_),E!==_)throw new r(e+" must be equal to "+t+", the actual values are "+E+" and "+_)},n}),define("Core/Math",["../ThirdParty/mersenne-twister","./Check","./defaultValue","./defined","./DeveloperError"],function(e,r,t,E,n){"use strict";var _={};_.EPSILON1=.1,_.EPSILON2=.01,_.EPSILON3=.001,_.EPSILON4=1e-4,_.EPSILON5=1e-5,_.EPSILON6=1e-6,_.EPSILON7=1e-7,_.EPSILON8=1e-8,_.EPSILON9=1e-9,_.EPSILON10=1e-10,_.EPSILON11=1e-11,_.EPSILON12=1e-12,_.EPSILON13=1e-13,_.EPSILON14=1e-14,_.EPSILON15=1e-15,_.EPSILON16=1e-16,_.EPSILON17=1e-17,_.EPSILON18=1e-18,_.EPSILON19=1e-19,_.EPSILON20=1e-20,_.EPSILON21=1e-21,_.GRAVITATIONALPARAMETER=3986004418e5,_.SOLAR_RADIUS=6955e5,_.LUNAR_RADIUS=1737400,_.SIXTY_FOUR_KILOBYTES=65536,_.FOUR_GIGABYTES=4294967296,_.sign=t(Math.sign,function(e){return e=+e,0===e||e!==e?e:e>0?1:-1}),_.signNotZero=function(e){return e<0?-1:1},_.toSNorm=function(e,r){return r=t(r,255),Math.round((.5*_.clamp(e,-1,1)+.5)*r)},_.fromSNorm=function(e,r){return r=t(r,255),_.clamp(e,0,r)/r*2-1},_.normalize=function(e,r,t){return t=Math.max(t-r,0),0===t?0:_.clamp((e-r)/t,0,1)},_.sinh=t(Math.sinh,function(e){return(Math.exp(e)-Math.exp(-e))/2}),_.cosh=t(Math.cosh,function(e){return(Math.exp(e)+Math.exp(-e))/2}),_.lerp=function(e,r,t){return(1-t)*e+t*r},_.PI=Math.PI,_.ONE_OVER_PI=1/Math.PI,_.PI_OVER_TWO=Math.PI/2,_.PI_OVER_THREE=Math.PI/3,_.PI_OVER_FOUR=Math.PI/4,_.PI_OVER_SIX=Math.PI/6,_.THREE_PI_OVER_TWO=3*Math.PI/2,_.TWO_PI=2*Math.PI,_.ONE_OVER_TWO_PI=1/(2*Math.PI),_.RADIANS_PER_DEGREE=Math.PI/180,_.DEGREES_PER_RADIAN=180/Math.PI,_.RADIANS_PER_ARCSECOND=_.RADIANS_PER_DEGREE/3600,_.toRadians=function(e){return e*_.RADIANS_PER_DEGREE},_.toDegrees=function(e){return e*_.DEGREES_PER_RADIAN},_.convertLongitudeRange=function(e){var r=_.TWO_PI,t=e-Math.floor(e/r)*r;return t<-Math.PI?t+r:t>=Math.PI?t-r:t},_.clampToLatitudeRange=function(e){return _.clamp(e,-1*_.PI_OVER_TWO,_.PI_OVER_TWO)},_.negativePiToPi=function(e){return _.zeroToTwoPi(e+_.PI)-_.PI},_.zeroToTwoPi=function(e){var r=_.mod(e,_.TWO_PI);return Math.abs(r)<_.EPSILON14&&Math.abs(e)>_.EPSILON14?_.TWO_PI:r},_.mod=function(e,r){return(e%r+r)%r},_.equalsEpsilon=function(e,r,E,n){n=t(n,E);var _=Math.abs(e-r);return _<=n||_<=E*Math.max(Math.abs(e),Math.abs(r))},_.lessThan=function(e,r,t){return e-r<-t},_.lessThanOrEquals=function(e,r,t){return e-r<t},_.greaterThan=function(e,r,t){return e-r>t},_.greaterThanOrEquals=function(e,r,t){return e-r>-t};var T=[1];_.factorial=function(e){var r=T.length;if(e>=r)for(var t=T[r-1],E=r;E<=e;E++){var n=t*E;T.push(n),t=n}return T[e]},_.incrementWrap=function(e,r,E){return E=t(E,0),++e,e>r&&(e=E),e},_.isPowerOfTwo=function(e){return 0!==e&&0==(e&e-1)},_.nextPowerOfTwo=function(e){return--e,e|=e>>1,e|=e>>2,e|=e>>4,e|=e>>8,e|=e>>16,++e},_.clamp=function(e,r,t){return e<r?r:e>t?t:e};var R=new e;return _.setRandomNumberSeed=function(r){R=new e(r)},_.nextRandomNumber=function(){return R.random()},_.randomBetween=function(e,r){return _.nextRandomNumber()*(r-e)+e},_.acosClamped=function(e){return Math.acos(_.clamp(e,-1,1))},_.asinClamped=function(e){return Math.asin(_.clamp(e,-1,1))},_.chordLength=function(e,r){return 2*r*Math.sin(.5*e)},_.logBase=function(e,r){return Math.log(e)/Math.log(r)},_.cbrt=t(Math.cbrt,function(e){var r=Math.pow(Math.abs(e),1/3);return e<0?-r:r}),_.log2=t(Math.log2,function(e){return Math.log(e)*Math.LOG2E}),_.fog=function(e,r){var t=e*r;return 1-Math.exp(-t*t)},_.fastApproximateAtan=function(e){return e*(-.1784*Math.abs(e)-.0663*e*e+1.0301)},_.fastApproximateAtan2=function(e,r){var t,E,n=Math.abs(e);t=Math.abs(r),E=Math.max(n,t),t=Math.min(n,t);var T=t/E
  64. ;return n=_.fastApproximateAtan(T),n=Math.abs(r)>Math.abs(e)?_.PI_OVER_TWO-n:n,n=e<0?_.PI-n:n,n=r<0?-n:n},_}),define("Core/IndexDatatype",["./defined","./DeveloperError","./freezeObject","./Math","./WebGLConstants"],function(e,r,t,E,n){"use strict";var _={UNSIGNED_BYTE:n.UNSIGNED_BYTE,UNSIGNED_SHORT:n.UNSIGNED_SHORT,UNSIGNED_INT:n.UNSIGNED_INT};return _.getSizeInBytes=function(e){switch(e){case _.UNSIGNED_BYTE:return Uint8Array.BYTES_PER_ELEMENT;case _.UNSIGNED_SHORT:return Uint16Array.BYTES_PER_ELEMENT;case _.UNSIGNED_INT:return Uint32Array.BYTES_PER_ELEMENT}},_.fromSizeInBytes=function(e){switch(e){case 2:return _.UNSIGNED_SHORT;case 4:return _.UNSIGNED_INT;case 1:return _.UNSIGNED_BYTE}},_.validate=function(r){return e(r)&&(r===_.UNSIGNED_BYTE||r===_.UNSIGNED_SHORT||r===_.UNSIGNED_INT)},_.createTypedArray=function(e,r){return e>=E.SIXTY_FOUR_KILOBYTES?new Uint32Array(r):new Uint16Array(r)},_.createTypedArrayFromArrayBuffer=function(e,r,t,n){return e>=E.SIXTY_FOUR_KILOBYTES?new Uint32Array(r,t,n):new Uint16Array(r,t,n)},t(_)}),define("Core/RuntimeError",["./defined"],function(e){"use strict";function r(e){this.name="RuntimeError",this.message=e;var r;try{throw new Error}catch(e){r=e.stack}this.stack=r}return e(Object.create)&&(r.prototype=Object.create(Error.prototype),r.prototype.constructor=r),r.prototype.toString=function(){var r=this.name+": "+this.message;return e(this.stack)&&(r+="\n"+this.stack.toString()),r},r}),define("Core/formatError",["./defined"],function(e){"use strict";function r(r){var t,E=r.name,n=r.message;t=e(E)&&e(n)?E+": "+n:r.toString();var _=r.stack;return e(_)&&(t+="\n"+_),t}return r}),define("Workers/createTaskProcessorWorker",["../ThirdParty/when","../Core/defaultValue","../Core/defined","../Core/formatError"],function(e,r,t,E){"use strict";function n(r,t,E){try{return r(t,E)}catch(r){return e.reject(r)}}function _(_){var T;return function(R){var A=R.data,o=[],i={id:A.id,result:void 0,error:void 0};return e(n(_,A.parameters,o)).then(function(e){i.result=e}).otherwise(function(e){e instanceof Error?i.error={name:e.name,message:e.message,stack:e.stack}:i.error=e}).always(function(){t(T)||(T=r(self.webkitPostMessage,self.postMessage)),A.canTransferArrayBuffer||(o.length=0);try{T(i,o)}catch(e){i.result=void 0,i.error="postMessage failed with error: "+E(e)+"\n with responseMessage: "+JSON.stringify(i),T(i)}})}}return _}),define("Workers/decodeDraco",["../Core/ComponentDatatype","../Core/defined","../Core/IndexDatatype","../Core/RuntimeError","./createTaskProcessorWorker"],function(e,r,t,E,n){"use strict";function _(e,r){for(var E=e.num_points(),n=e.num_faces(),_=new I.DracoInt32Array,T=3*n,R=t.createTypedArray(E,T),A=0,o=0;o<n;++o)r.GetFaceFromMesh(e,o,_),R[A+0]=_.GetValue(0),R[A+1]=_.GetValue(1),R[A+2]=_.GetValue(2),A+=3;return I.destroy(_),{typedArray:R,numberOfIndices:T}}function T(e,r,t,E,n){var _,T;E.quantizationBits<=8?(T=new I.DracoUInt8Array,_=new Uint8Array(n),r.GetAttributeUInt8ForAllPoints(e,t,T)):(T=new I.DracoUInt16Array,_=new Uint16Array(n),r.GetAttributeUInt16ForAllPoints(e,t,T));for(var R=0;R<n;++R)_[R]=T.GetValue(R);return I.destroy(T),_}function R(e,r,t,E){var n,_;switch(t.data_type()){case 1:case 11:_=new I.DracoInt8Array,n=new Int8Array(E),r.GetAttributeInt8ForAllPoints(e,t,_);break;case 2:_=new I.DracoUInt8Array,n=new Uint8Array(E),r.GetAttributeUInt8ForAllPoints(e,t,_);break;case 3:_=new I.DracoInt16Array,n=new Int16Array(E),r.GetAttributeInt16ForAllPoints(e,t,_);break;case 4:_=new I.DracoUInt16Array,n=new Uint16Array(E),r.GetAttributeUInt16ForAllPoints(e,t,_);break;case 5:case 7:_=new I.DracoInt32Array,n=new Int32Array(E),r.GetAttributeInt32ForAllPoints(e,t,_);break;case 6:case 8:_=new I.DracoUInt32Array,n=new Uint32Array(E),r.GetAttributeUInt32ForAllPoints(e,t,_);break;case 9:case 10:_=new I.DracoFloat32Array,n=new Float32Array(E),r.GetAttributeFloatForAllPoints(e,t,_)}for(var T=0;T<E;++T)n[T]=_.GetValue(T);return I.destroy(_),n}function A(t,E,n){var _,A=t.num_points(),o=n.num_components(),i=new I.AttributeQuantizationTransform;if(i.InitFromAttribute(n)){for(var u=new Array(o),a=0;a<o;++a)u[a]=i.min_value(a);_={quantizationBits:i.quantization_bits(),minValues:u,range:i.range(),octEncoded:!1}}I.destroy(i),i=new I.AttributeOctahedronTransform,i.InitFromAttribute(n)&&(_={quantizationBits:i.quantization_bits(),octEncoded:!0}),I.destroy(i);var N,s=A*o;N=r(_)?T(t,E,n,_,s):R(t,E,n,s);var S=e.fromTypedArray(N);return{array:N,data:{componentsPerAttribute:o,componentDatatype:S,byteOffset:n.byte_offset(),byteStride:e.getSizeInBytes(S)*o,normalized:n.normalized(),quantization:_}}}function o(e){var r=new I.Decoder;e.dequantizeInShader&&(r.SkipAttributeTransform(I.POSITION),r.SkipAttributeTransform(I.NORMAL));var t=new I.DecoderBuffer;if(t.Init(e.buffer,e.buffer.length),r.GetEncodedGeometryType(t)!==I.POINT_CLOUD)throw new E("Draco geometry type must be POINT_CLOUD.");var n=new I.PointCloud,_=r.DecodeBufferToPointCloud(t,n);if(!_.ok()||0===n.ptr)throw new E("Error decoding draco point cloud: "+_.error_msg());I.destroy(t);var T={},R=e.properties;for(var o in R)if(R.hasOwnProperty(o)){var i=R[o],u=r.GetAttributeByUniqueId(n,i);T[o]=A(n,r,u)}return I.destroy(n),I.destroy(r),T}function i(e){var r=new I.Decoder,t=["POSITION","NORMAL","COLOR","TEX_COORD"];if(e.dequantizeInShader)for(var n=0;n<t.length;++n)r.SkipAttributeTransform(I[t[n]]);var T=e.bufferView,R=new I.DecoderBuffer;if(R.Init(e.array,T.byteLength),r.GetEncodedGeometryType(R)!==I.TRIANGULAR_MESH)throw new E("Unsupported draco mesh geometry type.");var o=new I.Mesh,i=r.DecodeBufferToMesh(R,o);if(!i.ok()||0===o.ptr)throw new E("Error decoding draco mesh geometry: "+i.error_msg());I.destroy(R);var u={},a=e.compressedAttributes;for(var N in a)if(a.hasOwnProperty(N)){var s=a[N],S=r.GetAttributeByUniqueId(o,s);u[N]=A(o,r,S)}var c={indexArray:_(o,r),attributeData:u};return I.destroy(o),I.destroy(r),c}function u(e){return r(e.primitive)?i(e):o(e)}function a(e){I=e,self.onmessage=n(u),self.postMessage(!0)}function N(e){var t=e.data,E=t.webAssemblyConfig;if(r(E))return require([E.modulePath],function(e){r(E.wasmBinaryFile)?(r(e)||(e=self.DracoDecoderModule),e(E).then(function(e){a(e)})):a(e())})}var I;return N})}();