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| 1 | +var GetValue = require('../utils/object/GetValue'); |
| 2 | +var Arne16 = require('./palettes/Arne16'); |
| 3 | +var CanvasPool = require('../dom/CanvasPool'); |
| 4 | + |
| 5 | +var GenerateTexture = function (config) |
| 6 | +{ |
| 7 | + var data = GetValue(config, 'data', []); |
| 8 | + var canvas = GetValue(config, 'canvas', null); |
| 9 | + var palette = GetValue(config, 'palette', Arne16); |
| 10 | + var pixelWidth = GetValue(config, 'pixelWidth', 1); |
| 11 | + var pixelHeight = GetValue(config, 'pixelHeight', pixelWidth); |
| 12 | + var resizeCanvas = GetValue(config, 'resizeCanvas', true); |
| 13 | + var clearCanvas = GetValue(config, 'clearCanvas', true); |
| 14 | + var preRender = GetValue(config, 'preRender', null); |
| 15 | + var postRender = GetValue(config, 'postRender', null); |
| 16 | + |
| 17 | + var width = Math.floor(Math.abs(data[0].length * pixelWidth)); |
| 18 | + var height = Math.floor(Math.abs(data.length * pixelHeight)); |
| 19 | + |
| 20 | + if (!canvas) |
| 21 | + { |
| 22 | + canvas = CanvasPool.create2D(this, width, height); |
| 23 | + resizeCanvas = false; |
| 24 | + clearCanvas = false; |
| 25 | + } |
| 26 | + |
| 27 | + if (resizeCanvas) |
| 28 | + { |
| 29 | + canvas.width = width; |
| 30 | + canvas.height = height; |
| 31 | + } |
| 32 | + |
| 33 | + var ctx = canvas.getContext('2d'); |
| 34 | + |
| 35 | + if (clearCanvas) |
| 36 | + { |
| 37 | + ctx.clearRect(0, 0, width, height); |
| 38 | + } |
| 39 | + |
| 40 | + // preRender Callback? |
| 41 | + if (preRender) |
| 42 | + { |
| 43 | + preRender(canvas, ctx); |
| 44 | + } |
| 45 | + |
| 46 | + // Draw it |
| 47 | + for (var y = 0; y < data.length; y++) |
| 48 | + { |
| 49 | + var row = data[y]; |
| 50 | + |
| 51 | + for (var x = 0; x < row.length; x++) |
| 52 | + { |
| 53 | + var d = row[x]; |
| 54 | + |
| 55 | + if (d !== '.' && d !== ' ') |
| 56 | + { |
| 57 | + ctx.fillStyle = palette[d]; |
| 58 | + ctx.fillRect(x * pixelWidth, y * pixelHeight, pixelWidth, pixelHeight); |
| 59 | + } |
| 60 | + } |
| 61 | + } |
| 62 | + |
| 63 | + // postRender Callback? |
| 64 | + if (postRender) |
| 65 | + { |
| 66 | + postRender(canvas, ctx); |
| 67 | + } |
| 68 | + |
| 69 | + return canvas; |
| 70 | +}; |
| 71 | + |
| 72 | +module.exports = GenerateTexture; |
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