fabric/dist/src/filters/Noise.mjs.map

Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.

{"version":3,"file":"Noise.mjs","sources":["../../../src/filters/Noise.ts"],"sourcesContent":["import { BaseFilter } from './BaseFilter';\nimport type { T2DPipelineState, TWebGLUniformLocationMap } from './typedefs';\nimport { classRegistry } from '../ClassRegistry';\nimport { fragmentSource } from './shaders/noise';\n\nexport type NoiseOwnProps = {\n  noise: number;\n};\n\nexport const noiseDefaultValues: NoiseOwnProps = {\n  noise: 0,\n};\n\n/**\n * Noise filter class\n * @example\n * const filter = new Noise({\n *   noise: 700\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n * canvas.renderAll();\n */\nexport class Noise extends BaseFilter<'Noise', NoiseOwnProps> {\n  /**\n   * Noise value, from\n   * @param {Number} noise\n   * @default\n   */\n  declare noise: NoiseOwnProps['noise'];\n\n  static type = 'Noise';\n\n  static defaults = noiseDefaultValues;\n\n  static uniformLocations = ['uNoise', 'uSeed'];\n\n  getFragmentSource() {\n    return fragmentSource;\n  }\n\n  /**\n   * Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image.\n   *\n   * @param {Object} options\n   * @param {ImageData} options.imageData The Uint8ClampedArray to be filtered.\n   */\n  applyTo2d({ imageData: { data } }: T2DPipelineState) {\n    const noise = this.noise;\n    for (let i = 0; i < data.length; i += 4) {\n      const rand = (0.5 - Math.random()) * noise;\n      data[i] += rand;\n      data[i + 1] += rand;\n      data[i + 2] += rand;\n    }\n  }\n\n  /**\n   * Send data from this filter to its shader program's uniforms.\n   *\n   * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n   * @param {Object} uniformLocations A map of string uniform names to WebGLUniformLocation objects\n   */\n  sendUniformData(\n    gl: WebGLRenderingContext,\n    uniformLocations: TWebGLUniformLocationMap,\n  ) {\n    gl.uniform1f(uniformLocations.uNoise, this.noise / 255);\n    gl.uniform1f(uniformLocations.uSeed, Math.random());\n  }\n\n  isNeutralState() {\n    return this.noise === 0;\n  }\n}\n\nclassRegistry.setClass(Noise);\n"],"names":["noiseDefaultValues","noise","Noise","BaseFilter","getFragmentSource","fragmentSource","applyTo2d","_ref","imageData","data","i","length","rand","Math","random","sendUniformData","gl","uniformLocations","uniform1f","uNoise","uSeed","isNeutralState","_defineProperty","classRegistry","setClass"],"mappings":";;;;;AASO,MAAMA,kBAAiC,GAAG;AAC/CC,EAAAA,KAAK,EAAE,CAAA;AACT,EAAC;;AAED;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACO,MAAMC,KAAK,SAASC,UAAU,CAAyB;AAc5DC,EAAAA,iBAAiBA,GAAG;AAClB,IAAA,OAAOC,cAAc,CAAA;AACvB,GAAA;;AAEA;AACF;AACA;AACA;AACA;AACA;EACEC,SAASA,CAAAC,IAAA,EAA4C;IAAA,IAA3C;AAAEC,MAAAA,SAAS,EAAE;AAAEC,QAAAA,IAAAA;AAAK,OAAA;AAAoB,KAAC,GAAAF,IAAA,CAAA;AACjD,IAAA,MAAMN,KAAK,GAAG,IAAI,CAACA,KAAK,CAAA;AACxB,IAAA,KAAK,IAAIS,CAAC,GAAG,CAAC,EAAEA,CAAC,GAAGD,IAAI,CAACE,MAAM,EAAED,CAAC,IAAI,CAAC,EAAE;MACvC,MAAME,IAAI,GAAG,CAAC,GAAG,GAAGC,IAAI,CAACC,MAAM,EAAE,IAAIb,KAAK,CAAA;AAC1CQ,MAAAA,IAAI,CAACC,CAAC,CAAC,IAAIE,IAAI,CAAA;AACfH,MAAAA,IAAI,CAACC,CAAC,GAAG,CAAC,CAAC,IAAIE,IAAI,CAAA;AACnBH,MAAAA,IAAI,CAACC,CAAC,GAAG,CAAC,CAAC,IAAIE,IAAI,CAAA;AACrB,KAAA;AACF,GAAA;;AAEA;AACF;AACA;AACA;AACA;AACA;AACEG,EAAAA,eAAeA,CACbC,EAAyB,EACzBC,gBAA0C,EAC1C;AACAD,IAAAA,EAAE,CAACE,SAAS,CAACD,gBAAgB,CAACE,MAAM,EAAE,IAAI,CAAClB,KAAK,GAAG,GAAG,CAAC,CAAA;AACvDe,IAAAA,EAAE,CAACE,SAAS,CAACD,gBAAgB,CAACG,KAAK,EAAEP,IAAI,CAACC,MAAM,EAAE,CAAC,CAAA;AACrD,GAAA;AAEAO,EAAAA,cAAcA,GAAG;AACf,IAAA,OAAO,IAAI,CAACpB,KAAK,KAAK,CAAC,CAAA;AACzB,GAAA;AACF,CAAA;AAlDE;AACF;AACA;AACA;AACA;AAJEqB,eAAA,CADWpB,KAAK,EAAA,MAAA,EAQF,OAAO,CAAA,CAAA;AAAAoB,eAAA,CARVpB,KAAK,EAAA,UAAA,EAUEF,kBAAkB,CAAA,CAAA;AAAAsB,eAAA,CAVzBpB,KAAK,EAAA,kBAAA,EAYU,CAAC,QAAQ,EAAE,OAAO,CAAC,CAAA,CAAA;AAyC/CqB,aAAa,CAACC,QAAQ,CAACtB,KAAK,CAAC;;;;"}