{"version":3,"sources":["../src/index.js"],"names":["dither","cb","rgb565Matrix","scanQuiet","bitmap","width","height","x","y","idx","thresholdId","data","Math","min","call","dither565","dither16"],"mappings":";;;;;;;AAAA;;AAEA;;;;;AAKA,SAASA,MAAT,CAAgBC,EAAhB,EAAoB;AAClB,MAAMC,YAAY,GAAG,CAAC,CAAD,EAAI,CAAJ,EAAO,CAAP,EAAU,EAAV,EAAc,EAAd,EAAkB,CAAlB,EAAqB,EAArB,EAAyB,CAAzB,EAA4B,CAA5B,EAA+B,EAA/B,EAAmC,CAAnC,EAAsC,EAAtC,EAA0C,EAA1C,EAA8C,CAA9C,EAAiD,EAAjD,EAAqD,CAArD,CAArB;AACA,OAAKC,SAAL,CAAe,CAAf,EAAkB,CAAlB,EAAqB,KAAKC,MAAL,CAAYC,KAAjC,EAAwC,KAAKD,MAAL,CAAYE,MAApD,EAA4D,UAC1DC,CAD0D,EAE1DC,CAF0D,EAG1DC,GAH0D,EAI1D;AACA,QAAMC,WAAW,GAAG,CAAC,CAACF,CAAC,GAAG,CAAL,KAAW,CAAZ,IAAkBD,CAAC,GAAG,CAA1C;AACA,QAAMP,MAAM,GAAGE,YAAY,CAACQ,WAAD,CAA3B;AACA,SAAKN,MAAL,CAAYO,IAAZ,CAAiBF,GAAjB,IAAwBG,IAAI,CAACC,GAAL,CAAS,KAAKT,MAAL,CAAYO,IAAZ,CAAiBF,GAAjB,IAAwBT,MAAjC,EAAyC,IAAzC,CAAxB;AACA,SAAKI,MAAL,CAAYO,IAAZ,CAAiBF,GAAG,GAAG,CAAvB,IAA4BG,IAAI,CAACC,GAAL,CAC1B,KAAKT,MAAL,CAAYO,IAAZ,CAAiBF,GAAG,GAAG,CAAvB,IAA4BT,MADF,EAE1B,IAF0B,CAA5B;AAIA,SAAKI,MAAL,CAAYO,IAAZ,CAAiBF,GAAG,GAAG,CAAvB,IAA4BG,IAAI,CAACC,GAAL,CAC1B,KAAKT,MAAL,CAAYO,IAAZ,CAAiBF,GAAG,GAAG,CAAvB,IAA4BT,MADF,EAE1B,IAF0B,CAA5B;AAID,GAhBD;;AAkBA,MAAI,0BAAcC,EAAd,CAAJ,EAAuB;AACrBA,IAAAA,EAAE,CAACa,IAAH,CAAQ,IAAR,EAAc,IAAd,EAAoB,IAApB;AACD;;AAED,SAAO,IAAP;AACD;;eAEc;AAAA,SAAO;AACpBC,IAAAA,SAAS,EAAEf,MADS;AAEpBgB,IAAAA,QAAQ,EAAEhB;AAFU,GAAP;AAAA,C","sourcesContent":["import { isNodePattern } from '@jimp/utils';\n\n/**\n * Apply a ordered dithering effect\n * @param {function(Error, Jimp)} cb (optional) a callback for when complete\n * @returns {Jimp} this for chaining of methods\n */\nfunction dither(cb) {\n  const rgb565Matrix = [1, 9, 3, 11, 13, 5, 15, 7, 4, 12, 2, 10, 16, 8, 14, 6];\n  this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function(\n    x,\n    y,\n    idx\n  ) {\n    const thresholdId = ((y & 3) << 2) + (x % 4);\n    const dither = rgb565Matrix[thresholdId];\n    this.bitmap.data[idx] = Math.min(this.bitmap.data[idx] + dither, 0xff);\n    this.bitmap.data[idx + 1] = Math.min(\n      this.bitmap.data[idx + 1] + dither,\n      0xff\n    );\n    this.bitmap.data[idx + 2] = Math.min(\n      this.bitmap.data[idx + 2] + dither,\n      0xff\n    );\n  });\n\n  if (isNodePattern(cb)) {\n    cb.call(this, null, this);\n  }\n\n  return this;\n}\n\nexport default () => ({\n  dither565: dither,\n  dither16: dither\n});\n"],"file":"index.js"}