{"version":3,"file":"Saturation.mjs","sources":["../../../src/filters/Saturation.ts"],"sourcesContent":["import type { TClassProperties } from '../typedefs';\nimport { BaseFilter } from './BaseFilter';\nimport type { T2DPipelineState, TWebGLUniformLocationMap } from './typedefs';\nimport { classRegistry } from '../ClassRegistry';\nimport { fragmentSource } from './shaders/saturation';\n\n/**\n * Saturate filter class\n * @example\n * const filter = new Saturation({\n *   saturation: 1\n * });\n * object.filters.push(filter);\n * object.applyFilters();\n */\n\nexport const saturationDefaultValues: Partial<TClassProperties<Saturation>> = {\n  saturation: 0,\n  mainParameter: 'saturation',\n};\n\nexport class Saturation extends BaseFilter {\n  /**\n   * Saturation value, from -1 to 1.\n   * Increases/decreases the color saturation.\n   * A value of 0 has no effect.\n   *\n   * @param {Number} saturation\n   * @default\n   */\n  declare saturation: number;\n\n  static type = 'Saturation';\n\n  static defaults = saturationDefaultValues;\n\n  getFragmentSource() {\n    return fragmentSource;\n  }\n\n  /**\n   * Apply the Saturation 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    if (this.saturation === 0) {\n      return;\n    }\n    const adjust = -this.saturation;\n    for (let i = 0; i < data.length; i += 4) {\n      const max = Math.max(data[i], data[i + 1], data[i + 2]);\n      data[i] += max !== data[i] ? (max - data[i]) * adjust : 0;\n      data[i + 1] += max !== data[i + 1] ? (max - data[i + 1]) * adjust : 0;\n      data[i + 2] += max !== data[i + 2] ? (max - data[i + 2]) * adjust : 0;\n    }\n  }\n\n  /**\n   * Return WebGL uniform locations for this filter's shader.\n   *\n   * @param {WebGLRenderingContext} gl The GL canvas context used to compile this filter's shader.\n   * @param {WebGLShaderProgram} program This filter's compiled shader program.\n   */\n  getUniformLocations(\n    gl: WebGLRenderingContext,\n    program: WebGLProgram\n  ): TWebGLUniformLocationMap {\n    return {\n      uSaturation: gl.getUniformLocation(program, 'uSaturation'),\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.uSaturation, -this.saturation);\n  }\n}\n\nclassRegistry.setClass(Saturation);\n"],"names":["saturationDefaultValues","saturation","mainParameter","Saturation","BaseFilter","getFragmentSource","fragmentSource","applyTo2d","_ref","imageData","data","adjust","i","length","max","Math","getUniformLocations","gl","program","uSaturation","getUniformLocation","sendUniformData","uniformLocations","uniform1f","_defineProperty","classRegistry","setClass"],"mappings":";;;;;AAMA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEO,MAAMA,uBAA8D,GAAG;AAC5EC,EAAAA,UAAU,EAAE,CAAC;AACbC,EAAAA,aAAa,EAAE,YAAA;AACjB,EAAC;AAEM,MAAMC,UAAU,SAASC,UAAU,CAAC;AAezCC,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,IAAI,IAAI,CAACP,UAAU,KAAK,CAAC,EAAE;AACzB,MAAA,OAAA;AACF,KAAA;AACA,IAAA,MAAMU,MAAM,GAAG,CAAC,IAAI,CAACV,UAAU,CAAA;AAC/B,IAAA,KAAK,IAAIW,CAAC,GAAG,CAAC,EAAEA,CAAC,GAAGF,IAAI,CAACG,MAAM,EAAED,CAAC,IAAI,CAAC,EAAE;MACvC,MAAME,GAAG,GAAGC,IAAI,CAACD,GAAG,CAACJ,IAAI,CAACE,CAAC,CAAC,EAAEF,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,EAAEF,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,CAAC,CAAA;MACvDF,IAAI,CAACE,CAAC,CAAC,IAAIE,GAAG,KAAKJ,IAAI,CAACE,CAAC,CAAC,GAAG,CAACE,GAAG,GAAGJ,IAAI,CAACE,CAAC,CAAC,IAAID,MAAM,GAAG,CAAC,CAAA;MACzDD,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,IAAIE,GAAG,KAAKJ,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,GAAG,CAACE,GAAG,GAAGJ,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,IAAID,MAAM,GAAG,CAAC,CAAA;MACrED,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,IAAIE,GAAG,KAAKJ,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,GAAG,CAACE,GAAG,GAAGJ,IAAI,CAACE,CAAC,GAAG,CAAC,CAAC,IAAID,MAAM,GAAG,CAAC,CAAA;AACvE,KAAA;AACF,GAAA;;AAEA;AACF;AACA;AACA;AACA;AACA;AACEK,EAAAA,mBAAmBA,CACjBC,EAAyB,EACzBC,OAAqB,EACK;IAC1B,OAAO;AACLC,MAAAA,WAAW,EAAEF,EAAE,CAACG,kBAAkB,CAACF,OAAO,EAAE,aAAa,CAAA;KAC1D,CAAA;AACH,GAAA;;AAEA;AACF;AACA;AACA;AACA;AACA;AACEG,EAAAA,eAAeA,CACbJ,EAAyB,EACzBK,gBAA0C,EAC1C;IACAL,EAAE,CAACM,SAAS,CAACD,gBAAgB,CAACH,WAAW,EAAE,CAAC,IAAI,CAAClB,UAAU,CAAC,CAAA;AAC9D,GAAA;AACF,CAAA;AAhEE;AACF;AACA;AACA;AACA;AACA;AACA;AACA;AAPEuB,eAAA,CADWrB,UAAU,EAAA,MAAA,EAWP,YAAY,CAAA,CAAA;AAAAqB,eAAA,CAXfrB,UAAU,EAAA,UAAA,EAaHH,uBAAuB,CAAA,CAAA;AAsD3CyB,aAAa,CAACC,QAAQ,CAACvB,UAAU,CAAC;;;;"}