{"version":3,"sources":["../src/index.js"],"names":["displace","map","offset","cb","constructor","throwError","call","source","cloneQuiet","scanQuiet","bitmap","width","height","x","y","idx","displacement","data","Math","round","ids","getPixelIndex"],"mappings":";;;;;;;;;;;AAAA;;AAEA;;;;;;;eAOe;AAAA,SAAO;AACpBA,IAAAA,QADoB,oBACXC,GADW,EACNC,MADM,EACEC,EADF,EACM;AACxB,UAAI,yBAAOF,GAAP,MAAe,QAAf,IAA2BA,GAAG,CAACG,WAAJ,KAAoB,KAAKA,WAAxD,EAAqE;AACnE,eAAOC,kBAAWC,IAAX,CAAgB,IAAhB,EAAsB,iCAAtB,EAAyDH,EAAzD,CAAP;AACD;;AAED,UAAI,OAAOD,MAAP,KAAkB,QAAtB,EAAgC;AAC9B,eAAOG,kBAAWC,IAAX,CAAgB,IAAhB,EAAsB,yBAAtB,EAAiDH,EAAjD,CAAP;AACD;;AAED,UAAMI,MAAM,GAAG,KAAKC,UAAL,EAAf;AACA,WAAKC,SAAL,CAAe,CAAf,EAAkB,CAAlB,EAAqB,KAAKC,MAAL,CAAYC,KAAjC,EAAwC,KAAKD,MAAL,CAAYE,MAApD,EAA4D,UAC1DC,CAD0D,EAE1DC,CAF0D,EAG1DC,GAH0D,EAI1D;AACA,YAAIC,YAAY,GAAIf,GAAG,CAACS,MAAJ,CAAWO,IAAX,CAAgBF,GAAhB,IAAuB,GAAxB,GAA+Bb,MAAlD;AACAc,QAAAA,YAAY,GAAGE,IAAI,CAACC,KAAL,CAAWH,YAAX,CAAf;AAEA,YAAMI,GAAG,GAAG,KAAKC,aAAL,CAAmBR,CAAC,GAAGG,YAAvB,EAAqCF,CAArC,CAAZ;AACA,aAAKJ,MAAL,CAAYO,IAAZ,CAAiBG,GAAjB,IAAwBb,MAAM,CAACG,MAAP,CAAcO,IAAd,CAAmBF,GAAnB,CAAxB;AACA,aAAKL,MAAL,CAAYO,IAAZ,CAAiBG,GAAG,GAAG,CAAvB,IAA4Bb,MAAM,CAACG,MAAP,CAAcO,IAAd,CAAmBF,GAAG,GAAG,CAAzB,CAA5B;AACA,aAAKL,MAAL,CAAYO,IAAZ,CAAiBG,GAAG,GAAG,CAAvB,IAA4Bb,MAAM,CAACG,MAAP,CAAcO,IAAd,CAAmBF,GAAG,GAAG,CAAzB,CAA5B;AACD,OAZD;;AAcA,UAAI,0BAAcZ,EAAd,CAAJ,EAAuB;AACrBA,QAAAA,EAAE,CAACG,IAAH,CAAQ,IAAR,EAAc,IAAd,EAAoB,IAApB;AACD;;AAED,aAAO,IAAP;AACD;AA9BmB,GAAP;AAAA,C","sourcesContent":["import { isNodePattern, throwError } from '@jimp/utils';\n\n/**\n * Displaces the image based on the provided displacement map\n * @param {object} map the source Jimp instance\n * @param {number} offset the maximum displacement value\n * @param {function(Error, Jimp)} cb (optional) a callback for when complete\n * @returns {Jimp} this for chaining of methods\n */\nexport default () => ({\n  displace(map, offset, cb) {\n    if (typeof map !== 'object' || map.constructor !== this.constructor) {\n      return throwError.call(this, 'The source must be a Jimp image', cb);\n    }\n\n    if (typeof offset !== 'number') {\n      return throwError.call(this, 'factor must be a number', cb);\n    }\n\n    const source = this.cloneQuiet();\n    this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function(\n      x,\n      y,\n      idx\n    ) {\n      let displacement = (map.bitmap.data[idx] / 256) * offset;\n      displacement = Math.round(displacement);\n\n      const ids = this.getPixelIndex(x + displacement, y);\n      this.bitmap.data[ids] = source.bitmap.data[idx];\n      this.bitmap.data[ids + 1] = source.bitmap.data[idx + 1];\n      this.bitmap.data[ids + 2] = source.bitmap.data[idx + 2];\n    });\n\n    if (isNodePattern(cb)) {\n      cb.call(this, null, this);\n    }\n\n    return this;\n  }\n});\n"],"file":"index.js"}