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{"version":3,"file":"LUTCubeLoader.cjs","sources":["../../src/loaders/LUTCubeLoader.js"],"sourcesContent":["// https://wwwimages2.adobe.com/content/dam/acom/en/products/speedgrade/cc/pdfs/cube-lut-specification-1.0.pdf\n\nimport { Loader, FileLoader, Vector3, DataTexture, UnsignedByteType, ClampToEdgeWrapping, LinearFilter } from 'three'\nimport { Data3DTexture } from '../_polyfill/Data3DTexture'\n\nexport class LUTCubeLoader extends Loader {\n load(url, onLoad, onProgress, onError) {\n const loader = new FileLoader(this.manager)\n loader.setPath(this.path)\n loader.setResponseType('text')\n loader.load(\n url,\n (text) => {\n try {\n onLoad(this.parse(text))\n } catch (e) {\n if (onError) {\n onError(e)\n } else {\n console.error(e)\n }\n\n this.manager.itemError(url)\n }\n },\n onProgress,\n onError,\n )\n }\n\n parse(str) {\n // Remove empty lines and comments\n str = str\n .replace(/^#.*?(\\n|\\r)/gm, '')\n .replace(/^\\s*?(\\n|\\r)/gm, '')\n .trim()\n\n let title = null\n let size = null\n const domainMin = new Vector3(0, 0, 0)\n const domainMax = new Vector3(1, 1, 1)\n\n const lines = str.split(/[\\n\\r]+/g)\n let data = null\n\n let currIndex = 0\n for (let i = 0, l = lines.length; i < l; i++) {\n const line = lines[i].trim()\n const split = line.split(/\\s/g)\n\n switch (split[0]) {\n case 'TITLE':\n title = line.substring(7, line.length - 1)\n break\n case 'LUT_3D_SIZE':\n // TODO: A .CUBE LUT file specifies floating point values and could be represented with\n // more precision than can be captured with Uint8Array.\n const sizeToken = split[1]\n size = parseFloat(sizeToken)\n data = new Uint8Array(size * size * size * 4)\n break\n case 'DOMAIN_MIN':\n domainMin.x = parseFloat(split[1])\n domainMin.y = parseFloat(split[2])\n domainMin.z = parseFloat(split[3])\n break\n case 'DOMAIN_MAX':\n domainMax.x = parseFloat(split[1])\n domainMax.y = parseFloat(split[2])\n domainMax.z = parseFloat(split[3])\n break\n default:\n const r = parseFloat(split[0])\n const g = parseFloat(split[1])\n const b = parseFloat(split[2])\n\n if (r > 1.0 || r < 0.0 || g > 1.0 || g < 0.0 || b > 1.0 || b < 0.0) {\n throw new Error('LUTCubeLoader : Non normalized values not supported.')\n }\n\n data[currIndex + 0] = r * 255\n data[currIndex + 1] = g * 255\n data[currIndex + 2] = b * 255\n data[currIndex + 3] = 255\n currIndex += 4\n }\n }\n\n const texture = new DataTexture()\n texture.image.data = data\n texture.image.width = size\n texture.image.height = size * size\n texture.type = UnsignedByteType\n texture.magFilter = LinearFilter\n texture.minFilter = LinearFilter\n texture.wrapS = ClampToEdgeWrapping\n texture.wrapT = ClampToEdgeWrapping\n texture.generateMipmaps = false\n texture.needsUpdate = true\n\n const texture3D = new Data3DTexture()\n texture3D.image.data = data\n texture3D.image.width = size\n texture3D.image.height = size\n texture3D.image.depth = size\n texture3D.type = UnsignedByteType\n texture3D.magFilter = LinearFilter\n texture3D.minFilter = LinearFilter\n texture3D.wrapS = ClampToEdgeWrapping\n texture3D.wrapT = ClampToEdgeWrapping\n texture3D.wrapR = ClampToEdgeWrapping\n texture3D.generateMipmaps = false\n texture3D.needsUpdate = true\n\n return {\n title,\n size,\n domainMin,\n domainMax,\n texture,\n texture3D,\n }\n }\n}\n"],"names":["Loader","FileLoader","Vector3","DataTexture","UnsignedByteType","LinearFilter","ClampToEdgeWrapping","Data3DTexture"],"mappings":";;;;AAKO,MAAM,sBAAsBA,MAAAA,OAAO;AAAA,EACxC,KAAK,KAAK,QAAQ,YAAY,SAAS;AACrC
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