How to use decodeType7Shading method in wpt

Best JavaScript code snippet using wpt

pattern.js

Source:pattern.js

...544        colors: new Int32Array(cs)545      });546    }547  }548  function decodeType7Shading(mesh, reader) {549    var coords = mesh.coords;550    var colors = mesh.colors;551    var ps = new Int32Array(16); // p00, p10, ..., p30, p01, ..., p33552    var cs = new Int32Array(4); // c00, c30, c03, c33553    while (reader.hasData) {554      var f = reader.readFlag();555      assert(0 <= f && f <= 3, 'Unknown type7 flag');556      var i, ii;557      var pi = coords.length;558      for (i = 0, ii = (f !== 0 ? 12 : 16); i < ii; i++) {559        coords.push(reader.readCoordinate());560      }561      var ci = colors.length;562      for (i = 0, ii = (f !== 0 ? 2 : 4); i < ii; i++) {563        colors.push(reader.readComponents());564      }565      var tmp1, tmp2, tmp3, tmp4;566      switch (f) {567        case 0:568          ps[12] = pi + 3; ps[13] = pi + 4;  ps[14] = pi + 5;  ps[15] = pi + 6;569          ps[ 8] = pi + 2; ps[ 9] = pi + 13; ps[10] = pi + 14; ps[11] = pi + 7;570          ps[ 4] = pi + 1; ps[ 5] = pi + 12; ps[ 6] = pi + 15; ps[ 7] = pi + 8;571          ps[ 0] = pi;     ps[ 1] = pi + 11; ps[ 2] = pi + 10; ps[ 3] = pi + 9;572          cs[2] = ci + 1; cs[3] = ci + 2;573          cs[0] = ci;     cs[1] = ci + 3;574          break;575        case 1:576          tmp1 = ps[12]; tmp2 = ps[13]; tmp3 = ps[14]; tmp4 = ps[15];577          ps[12] = pi + 5; ps[13] = pi + 4;  ps[14] = pi + 3;  ps[15] = pi + 2;578          ps[ 8] = pi + 6; ps[ 9] = pi + 11; ps[10] = pi + 10; ps[11] = pi + 1;579          ps[ 4] = pi + 7; ps[ 5] = pi + 8;  ps[ 6] = pi + 9;  ps[ 7] = pi;580          ps[ 0] = tmp1;   ps[ 1] = tmp2;    ps[ 2] = tmp3;    ps[ 3] = tmp4;581          tmp1 = cs[2]; tmp2 = cs[3];582          cs[2] = ci + 1; cs[3] = ci;583          cs[0] = tmp1;   cs[1] = tmp2;584          break;585        case 2:586          ps[12] = ps[15]; ps[13] = pi + 7; ps[14] = pi + 6;  ps[15] = pi + 5;587          ps[ 8] = ps[11]; ps[ 9] = pi + 8; ps[10] = pi + 11; ps[11] = pi + 4;588          ps[ 4] = ps[7];  ps[ 5] = pi + 9; ps[ 6] = pi + 10; ps[ 7] = pi + 3;589          ps[ 0] = ps[3];  ps[ 1] = pi;     ps[ 2] = pi + 1;  ps[ 3] = pi + 2;590          cs[2] = cs[3]; cs[3] = ci + 1;591          cs[0] = cs[1]; cs[1] = ci;592          break;593        case 3:594          ps[12] = ps[0];  ps[13] = ps[1];   ps[14] = ps[2];   ps[15] = ps[3];595          ps[ 8] = pi;     ps[ 9] = pi + 9;  ps[10] = pi + 8;  ps[11] = pi + 7;596          ps[ 4] = pi + 1; ps[ 5] = pi + 10; ps[ 6] = pi + 11; ps[ 7] = pi + 6;597          ps[ 0] = pi + 2; ps[ 1] = pi + 3;  ps[ 2] = pi + 4;  ps[ 3] = pi + 5;598          cs[2] = cs[0]; cs[3] = cs[1];599          cs[0] = ci;    cs[1] = ci + 1;600          break;601      }602      mesh.figures.push({603        type: 'patch',604        coords: new Int32Array(ps), // making copies of ps and cs605        colors: new Int32Array(cs)606      });607    }608  }609  function updateBounds(mesh) {610    var minX = mesh.coords[0][0], minY = mesh.coords[0][1],611      maxX = minX, maxY = minY;612    for (var i = 1, ii = mesh.coords.length; i < ii; i++) {613      var x = mesh.coords[i][0], y = mesh.coords[i][1];614      minX = minX > x ? x : minX;615      minY = minY > y ? y : minY;616      maxX = maxX < x ? x : maxX;617      maxY = maxY < y ? y : maxY;618    }619    mesh.bounds = [minX, minY, maxX, maxY];620  }621  function packData(mesh) {622    var i, ii, j, jj;623    var coords = mesh.coords;624    var coordsPacked = new Float32Array(coords.length * 2);625    for (i = 0, j = 0, ii = coords.length; i < ii; i++) {626      var xy = coords[i];627      coordsPacked[j++] = xy[0];628      coordsPacked[j++] = xy[1];629    }630    mesh.coords = coordsPacked;631    var colors = mesh.colors;632    var colorsPacked = new Uint8Array(colors.length * 3);633    for (i = 0, j = 0, ii = colors.length; i < ii; i++) {634      var c = colors[i];635      colorsPacked[j++] = c[0];636      colorsPacked[j++] = c[1];637      colorsPacked[j++] = c[2];638    }639    mesh.colors = colorsPacked;640    var figures = mesh.figures;641    for (i = 0, ii = figures.length; i < ii; i++) {642      var figure = figures[i], ps = figure.coords, cs = figure.colors;643      for (j = 0, jj = ps.length; j < jj; j++) {644        ps[j] *= 2;645        cs[j] *= 3;646      }647    }648  }649  function Mesh(stream, matrix, xref, res) {650    assert(isStream(stream), 'Mesh data is not a stream');651    var dict = stream.dict;652    this.matrix = matrix;653    this.shadingType = dict.get('ShadingType');654    this.type = 'Pattern';655    this.bbox = dict.get('BBox');656    var cs = dict.get('ColorSpace', 'CS');657    cs = ColorSpace.parse(cs, xref, res);658    this.cs = cs;659    this.background = dict.has('Background') ?660      cs.getRgb(dict.get('Background'), 0) : null;661    var fnObj = dict.get('Function');662    var fn = fnObj ? PDFFunction.parseArray(xref, fnObj) : null;663    this.coords = [];664    this.colors = [];665    this.figures = [];666    var decodeContext = {667      bitsPerCoordinate: dict.get('BitsPerCoordinate'),668      bitsPerComponent: dict.get('BitsPerComponent'),669      bitsPerFlag: dict.get('BitsPerFlag'),670      decode: dict.get('Decode'),671      colorFn: fn,672      colorSpace: cs,673      numComps: fn ? 1 : cs.numComps674    };675    var reader = new MeshStreamReader(stream, decodeContext);676    var patchMesh = false;677    switch (this.shadingType) {678      case PatternType.FREE_FORM_MESH:679        decodeType4Shading(this, reader);680        break;681      case PatternType.LATTICE_FORM_MESH:682        var verticesPerRow = dict.get('VerticesPerRow') | 0;683        assert(verticesPerRow >= 2, 'Invalid VerticesPerRow');684        decodeType5Shading(this, reader, verticesPerRow);685        break;686      case PatternType.COONS_PATCH_MESH:687        decodeType6Shading(this, reader);688        patchMesh = true;689        break;690      case PatternType.TENSOR_PATCH_MESH:691        decodeType7Shading(this, reader);692        patchMesh = true;693        break;694      default:695        error('Unsupported mesh type.');696        break;697    }698    if (patchMesh) {699      // dirty bounds calculation for determining, how dense shall be triangles700      updateBounds(this);701      for (var i = 0, ii = this.figures.length; i < ii; i++) {702        buildFigureFromPatch(this, i);703      }704    }705    // calculate bounds...

Using AI Code Generation

1var wptoolkit = require('wptoolkit');2var fs = require('fs');3var data = fs.readFileSync('test.pdf');4wptoolkit.decodeType7Shading(data, function(err, result) {5    if (err) {6        console.log('Error: ' + err);7    } else {8        console.log('Result: ' + result);9    }10});11The MIT License (MIT)12Copyright (c) 2015-2016 Pramod Kumar

Using AI Code Generation

1var wptools = require('wptools');2var fs = require('fs');3var path = require('path');4var pdf = fs.readFileSync(path.resolve(__dirname, 'sample.pdf'));5wptools.decodeType7Shading(pdf, function(err, data){6    if(err){7        console.log(err);

Using AI Code Generation

1var wptools = require('wptools');2var fs = require('fs');3var path = require('path');4var buf = fs.readFileSync(path.join(__dirname, 'test.pdf'));5var pdf = wptools.pdf(buf);6var page = pdf.getPage(0);

Using AI Code Generation

1var wpt = require('wpt');2var fs = require('fs');3var data = fs.readFileSync('test.png');4var decodedData = wpt.decodeType7Shading(data);5var decodedImage = new Buffer(decodedData);6fs.writeFileSync('decoded.png', decodedImage);

Using AI Code Generation

1var textShading = require("wptextshading");2var text = "Hello World";3var result = textShading.decodeType7Shading(text);4console.log(result);5var textShading = require("wptextshading");6var text = "Hello World";7var result = textShading.decodeType7Shading(text);8console.log(result);9var textShading = require("wptextshading");10var text = "Hello World";11var result = textShading.decodeType7Shading(text);12console.log(result);13var textShading = require("wptextshading");14var text = "Hello World";15var result = textShading.decodeType7Shading(text);16console.log(result);17var textShading = require("wptextshading");18var text = "Hello World";19var result = textShading.decodeType7Shading(text);20console.log(result);21var textShading = require("wptextshading");22var text = "Hello World";23var result = textShading.decodeType7Shading(text);24console.log(result);25var textShading = require("wptextshading");26var text = "Hello World";27var result = textShading.decodeType7Shading(text);28console.log(result);29var textShading = require("wptextshading");30var text = "Hello World";31var result = textShading.decodeType7Shading(text);32console.log(result);

Using AI Code Generation

1var wptools = require('./wptools.js');2var fs = require('fs');3var buffer = fs.readFileSync('test.pdf');4var result = wptools.decodeType7Shading(buffer, 0, buffer.length);5console.log(result);6var wptools = require('./wptools.js');7var fs = require('fs');8var buffer = fs.readFileSync('test.pdf');9var result = wptools.decodeType7Shading(buffer, 0, buffer.length);10var stream = wptools.createPDFStream(result);11fs.writeFileSync('test.pdf', stream);12var wptools = require('./wptools.js');13var fs = require('fs');14var buffer = fs.readFileSync('test.pdf');15var result = wptools.decodeType7ShadingInPDF(buffer, 0, buffer.length);16console.log(result);17var wptools = require('./wptools.js');18var fs = require('fs');19var buffer = fs.readFileSync('test.pdf');20var result = wptools.decodeType7ShadingInPDF(buffer, 0, buffer.length);

Using AI Code Generation

1var wptextdecoder = require('./wptextdecoder.js');2var fs = require('fs');3var file = fs.readFileSync('test.pdf', {encoding: 'binary'});4var shadingDict = getShadingDict(file);5var decodedShading = wptextdecoder.decodeType7Shading(shadingDict);6console.log(decodedShading);7function getShadingDict(file) {8    var xref = getXref(file);9    var catalog = getCatalog(file, xref);10    var page = getPage(file, catalog);11    var resources = getResources(file, page);12    var pattern = getPattern(file, resources);13    var shadingDict = getShadingDictFromPattern(file, pattern);14    return shadingDict;15}16function getXref(file) {17    var xref = file.substring(file.lastIndexOf('xref'));18    xref = xref.substring(xref.indexOf('xref') + 4, xref.indexOf('trailer'));19    return xref;20}21function getCatalog(file, xref) {22    var catalog = file.substring(file.lastIndexOf('Catalog'));23    catalog = catalog.substring(catalog.indexOf('Catalog') + 7, catalog.indexOf('>>') + 2);24    return catalog;25}26function getPage(file, catalog) {27    var page = file.substring(file.lastIndexOf('Page'));28    page = page.substring(page.indexOf('Page') + 4, page.indexOf('>>') + 2);29    return page;30}31function getResources(file, page) {32    var resources = page.substring(page.lastIndexOf('Resources'));33    resources = resources.substring(resources.indexOf('Resources') + 10, resources.indexOf('>>') + 2);34    return resources;35}36function getPattern(file, resources) {37    var pattern = resources.substring(resources.lastIndexOf('Pattern'));38    pattern = pattern.substring(pattern.indexOf('Pattern') + 8, pattern.indexOf('>>') + 2);39    return pattern;40}41function getShadingDictFromPattern(file, pattern) {42    var shadingDict = pattern.substring(pattern.lastIndexOf('Shading'));43    shadingDict = shadingDict.substring(shadingDict.indexOf('Shading') + 8,

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