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@@ -1,30 +1,33 @@
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/*
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/*
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- * @author zz85 / https://github.com/zz85
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+ * @author zz85 / https://github.com/zz85
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*
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*
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* Ascii generation is based on http://www.nihilogic.dk/labs/jsascii/
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* Ascii generation is based on http://www.nihilogic.dk/labs/jsascii/
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* Maybe more about this later with a blog post at http://lab4games.net/zz85/blog
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* Maybe more about this later with a blog post at http://lab4games.net/zz85/blog
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- *
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+ *
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* 16 April 2012 - @blurspline
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* 16 April 2012 - @blurspline
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*/
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*/
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-
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+
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THREE.AsciiEffect = function ( renderer, charSet, options ) {
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THREE.AsciiEffect = function ( renderer, charSet, options ) {
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// its fun to create one your own!
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// its fun to create one your own!
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- charSet = (charSet === undefined) ? ' .:-=+*#%@' : charSet;
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-
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- // ' .,:;=|iI+hHOE#`$';
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+
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+ charSet = ( charSet === undefined ) ? ' .:-=+*#%@' : charSet;
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+
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+ // ' .,:;=|iI+hHOE#`$';
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// darker bolder character set from https://github.com/saw/Canvas-ASCII-Art/
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// darker bolder character set from https://github.com/saw/Canvas-ASCII-Art/
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// ' .\'`^",:;Il!i~+_-?][}{1)(|/tfjrxnuvczXYUJCLQ0OZmwqpdbkhao*#MW&8%B@$'.split('');
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// ' .\'`^",:;Il!i~+_-?][}{1)(|/tfjrxnuvczXYUJCLQ0OZmwqpdbkhao*#MW&8%B@$'.split('');
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- if (!options) options = {};
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+ if ( !options ) options = {};
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+
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// Some ASCII settings
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// Some ASCII settings
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+
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var bResolution = !options['resolution'] ? 0.15 : options['resolution']; // Higher for more details
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var bResolution = !options['resolution'] ? 0.15 : options['resolution']; // Higher for more details
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var iScale = !options['scale'] ? 1 : options['scale'];
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var iScale = !options['scale'] ? 1 : options['scale'];
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var bColor = !options['color'] ? false : options['color']; // nice but slows down rendering!
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var bColor = !options['color'] ? false : options['color']; // nice but slows down rendering!
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var bAlpha = !options['alpha'] ? false : options['alpha']; // Transparency
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var bAlpha = !options['alpha'] ? false : options['alpha']; // Transparency
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var bBlock = !options['block'] ? false : options['block']; // blocked characters. like good O dos
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var bBlock = !options['block'] ? false : options['block']; // blocked characters. like good O dos
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var bInvert = !options['invert'] ? false : options['invert']; // black is white, white is black
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var bInvert = !options['invert'] ? false : options['invert']; // black is white, white is black
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-
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+
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var strResolution = 'low';
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var strResolution = 'low';
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var width, height;
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var width, height;
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@@ -33,7 +36,7 @@ THREE.AsciiEffect = function ( renderer, charSet, options ) {
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domElement.style.cursor = 'default';
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domElement.style.cursor = 'default';
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var oAscii = document.createElement("table");
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var oAscii = document.createElement("table");
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- domElement.appendChild(oAscii);
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+ domElement.appendChild( oAscii );
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var iWidth, iHeight;
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var iWidth, iHeight;
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var oImg;
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var oImg;
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@@ -61,6 +64,7 @@ THREE.AsciiEffect = function ( renderer, charSet, options ) {
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// Throw in ascii library from http://www.nihilogic.dk/labs/jsascii/jsascii.js
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// Throw in ascii library from http://www.nihilogic.dk/labs/jsascii/jsascii.js
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+
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/*
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/*
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* jsAscii 0.1
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* jsAscii 0.1
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* Copyright (c) 2008 Jacob Seidelin, [email protected], http://blog.nihilogic.dk/
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* Copyright (c) 2008 Jacob Seidelin, [email protected], http://blog.nihilogic.dk/
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@@ -68,8 +72,9 @@ THREE.AsciiEffect = function ( renderer, charSet, options ) {
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*/
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*/
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function initAsciiSize() {
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function initAsciiSize() {
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- iWidth = Math.round(width * fResolution);
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- iHeight = Math.round(height * fResolution);
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+
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+ iWidth = Math.round( width * fResolution );
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+ iHeight = Math.round( height * fResolution );
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oCanvas.width = iWidth;
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oCanvas.width = iWidth;
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oCanvas.height = iHeight;
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oCanvas.height = iHeight;
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@@ -78,9 +83,12 @@ THREE.AsciiEffect = function ( renderer, charSet, options ) {
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// oCanvas.style.height = iHeight;
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// oCanvas.style.height = iHeight;
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oImg = renderer.domElement;
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oImg = renderer.domElement;
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- if (oImg.style.backgroundColor) {
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+
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+ if ( oImg.style.backgroundColor ) {
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+
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oAscii.rows[0].cells[0].style.backgroundColor = oImg.style.backgroundColor;
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oAscii.rows[0].cells[0].style.backgroundColor = oImg.style.backgroundColor;
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oAscii.rows[0].cells[0].style.color = oImg.style.color;
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oAscii.rows[0].cells[0].style.color = oImg.style.color;
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+
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}
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}
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oAscii.cellSpacing = 0;
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oAscii.cellSpacing = 0;
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@@ -112,6 +120,7 @@ THREE.AsciiEffect = function ( renderer, charSet, options ) {
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if (!oCanvas.getContext) {
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if (!oCanvas.getContext) {
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return;
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return;
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}
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}
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+
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var oCtx = oCanvas.getContext("2d");
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var oCtx = oCanvas.getContext("2d");
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if (!oCtx.getImageData) {
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if (!oCtx.getImageData) {
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return;
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return;
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@@ -119,49 +128,63 @@ THREE.AsciiEffect = function ( renderer, charSet, options ) {
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var aCharList = (bColor ? aDefaultColorCharList : aDefaultCharList);
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var aCharList = (bColor ? aDefaultColorCharList : aDefaultCharList);
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- if (charSet) aCharList = charSet;
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+ if (charSet) aCharList = charSet;
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var fResolution = 0.5;
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var fResolution = 0.5;
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- switch (strResolution) {
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+
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+ switch ( strResolution ) {
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+
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case "low" : fResolution = 0.25; break;
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case "low" : fResolution = 0.25; break;
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case "medium" : fResolution = 0.5; break;
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case "medium" : fResolution = 0.5; break;
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case "high" : fResolution = 1; break;
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case "high" : fResolution = 1; break;
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+
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}
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}
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- if (bResolution) fResolution = bResolution;
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+ if ( bResolution ) fResolution = bResolution;
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// Setup dom
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// Setup dom
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+
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var fFontSize = (2/fResolution)*iScale;
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var fFontSize = (2/fResolution)*iScale;
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var fLineHeight = (2/fResolution)*iScale;
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var fLineHeight = (2/fResolution)*iScale;
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// adjust letter-spacing for all combinations of scale and resolution to get it to fit the image width.
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// adjust letter-spacing for all combinations of scale and resolution to get it to fit the image width.
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+
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var fLetterSpacing = 0;
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var fLetterSpacing = 0;
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- if (strResolution == "low") {
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+
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+ if ( strResolution == "low" ) {
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+
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switch (iScale) {
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switch (iScale) {
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case 1 : fLetterSpacing = -1; break;
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case 1 : fLetterSpacing = -1; break;
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- case 2 :
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+ case 2 :
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case 3 : fLetterSpacing = -2.1; break;
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case 3 : fLetterSpacing = -2.1; break;
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case 4 : fLetterSpacing = -3.1; break;
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case 4 : fLetterSpacing = -3.1; break;
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case 5 : fLetterSpacing = -4.15; break;
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case 5 : fLetterSpacing = -4.15; break;
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}
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}
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+
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}
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}
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- if (strResolution == "medium") {
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+
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+ if ( strResolution == "medium" ) {
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+
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switch (iScale) {
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switch (iScale) {
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case 1 : fLetterSpacing = 0; break;
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case 1 : fLetterSpacing = 0; break;
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case 2 : fLetterSpacing = -1; break;
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case 2 : fLetterSpacing = -1; break;
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case 3 : fLetterSpacing = -1.04; break;
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case 3 : fLetterSpacing = -1.04; break;
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- case 4 :
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+ case 4 :
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case 5 : fLetterSpacing = -2.1; break;
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case 5 : fLetterSpacing = -2.1; break;
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}
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}
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+
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}
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}
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- if (strResolution == "high") {
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+
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+ if ( strResolution == "high" ) {
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+
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switch (iScale) {
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switch (iScale) {
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- case 1 :
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+ case 1 :
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case 2 : fLetterSpacing = 0; break;
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case 2 : fLetterSpacing = 0; break;
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- case 3 :
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- case 4 :
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+ case 3 :
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+ case 4 :
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case 5 : fLetterSpacing = -1; break;
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case 5 : fLetterSpacing = -1; break;
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}
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}
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+
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}
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}
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@@ -169,10 +192,11 @@ THREE.AsciiEffect = function ( renderer, charSet, options ) {
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// convert img element to ascii
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// convert img element to ascii
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- function asciifyImage(canvasRenderer, oAscii) {
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- oCtx.clearRect(0, 0, iWidth, iHeight);
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- oCtx.drawImage(oCanvasImg, 0, 0, iWidth, iHeight);
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+ function asciifyImage( canvasRenderer, oAscii ) {
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+
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+ oCtx.clearRect( 0, 0, iWidth, iHeight );
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+ oCtx.drawImage( oCanvasImg, 0, 0, iWidth, iHeight );
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var oImgData = oCtx.getImageData(0, 0, iWidth, iHeight).data;
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var oImgData = oCtx.getImageData(0, 0, iWidth, iHeight).data;
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// Coloring loop starts now
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// Coloring loop starts now
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@@ -183,7 +207,7 @@ THREE.AsciiEffect = function ( renderer, charSet, options ) {
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for (var y=0;y<iHeight;y+=2) {
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for (var y=0;y<iHeight;y+=2) {
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for (var x=0;x<iWidth;x++) {
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for (var x=0;x<iWidth;x++) {
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var iOffset = (y*iWidth + x) * 4;
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var iOffset = (y*iWidth + x) * 4;
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-
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+
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var iRed = oImgData[iOffset];
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var iRed = oImgData[iOffset];
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var iGreen = oImgData[iOffset + 1];
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var iGreen = oImgData[iOffset + 1];
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var iBlue = oImgData[iOffset + 2];
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var iBlue = oImgData[iOffset + 2];
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@@ -194,14 +218,14 @@ THREE.AsciiEffect = function ( renderer, charSet, options ) {
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fBrightness = (0.3*iRed + 0.59*iGreen + 0.11*iBlue) / 255;
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fBrightness = (0.3*iRed + 0.59*iGreen + 0.11*iBlue) / 255;
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// fBrightness = (0.3*iRed + 0.5*iGreen + 0.3*iBlue) / 255;
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// fBrightness = (0.3*iRed + 0.5*iGreen + 0.3*iBlue) / 255;
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-
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+
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if (iAlpha == 0) {
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if (iAlpha == 0) {
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// should calculate alpha instead, but quick hack :)
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// should calculate alpha instead, but quick hack :)
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- //fBrightness *= (iAlpha / 255);
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+ //fBrightness *= (iAlpha / 255);
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fBrightness = 1;
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fBrightness = 1;
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-
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- }
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-
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+
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+ }
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+
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iCharIdx = Math.floor((1-fBrightness) * (aCharList.length-1));
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iCharIdx = Math.floor((1-fBrightness) * (aCharList.length-1));
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if (bInvert) {
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if (bInvert) {
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@@ -212,7 +236,7 @@ THREE.AsciiEffect = function ( renderer, charSet, options ) {
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//fBrightness = Math.floor(fBrightness * 10);
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//fBrightness = Math.floor(fBrightness * 10);
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//strThisChar = fBrightness;
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//strThisChar = fBrightness;
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- var strThisChar = aCharList[iCharIdx];
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+ var strThisChar = aCharList[iCharIdx];
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if (strThisChar===undefined || strThisChar == " ")
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if (strThisChar===undefined || strThisChar == " ")
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strThisChar = " ";
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strThisChar = " ";
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@@ -229,14 +253,14 @@ THREE.AsciiEffect = function ( renderer, charSet, options ) {
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}
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}
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strChars += "<br/>";
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strChars += "<br/>";
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}
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}
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-
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+
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oAscii.innerHTML = "<tr><td>" + strChars + "</td></tr>";
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oAscii.innerHTML = "<tr><td>" + strChars + "</td></tr>";
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// console.timeEnd('rendering');
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// console.timeEnd('rendering');
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-
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+
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// return oAscii;
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// return oAscii;
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}
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}
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// end modified asciifyImage block
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// end modified asciifyImage block
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-
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+
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};
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};
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