jQuery Matrix Effects

Bring matrix movie special effects to your webpage! This is a cool jQuery plugin based on the famous movie "The Matrix". The plugin simulates the classic green character effects in the movie, and just select a picture and the plugin will convert it into a matrix-style picture filled with numeric characters. Come and try it, it's very interesting!

Working principle

Plugin loads the picture onto the canvas and reads the pixel and color values:

data =  ctx.getImageData(x, y, settings.grainSize, settings.grainSize).data

The plugin cleverly reads the rectangular area of ​​the picture and uses jQuery to calculate the average color of each area. Then, replace the pixels of the image area with characters to achieve matrix effects.

// 获取图片的一部分
data = ctx.getImageData(x, y, settings.grainSize, settings.grainSize).data;
var r_avg = 0, g_avg = 0, b_avg = 0;

// 计算每个通道的总和
for (var i = 0; i < data.length; i += 4) {
    r_avg += data[i];
    g_avg += data[i + 1];
    b_avg += data[i + 2];
}

// 计算每个通道的平均颜色
r_avg = Math.round(r_avg / (data.length / 4));
g_avg = Math.round(g_avg / (data.length / 4));
b_avg = Math.round(b_avg / (data.length / 4));

Plugin generates many <b></b> tags, each containing a character:

var block = document.createElement("b");
jQuery(matrix_cont).append(block);
var r = image_colors[i].r;
var g = image_colors[i].g;
var b = image_colors[i].b;
block.innerHTML = getChar(r, g, b);
switch (settings.colors) {
    case "bn":
        var gray = Math.round((r + g + b) / 3);
        jQuery(block).css("color", "rgb(" + gray + "," + gray + "," + gray + ")");
        break;
    case "green":
        jQuery(block).css("color", "rgb(0," + g + ",0)");
        break;
    case "all":
    default:
        jQuery(block).css("color", "rgb(" + r + "," + g + "," + b + ")");
        break;
}

Character selection:

Darker colors use the front characters, and brighter colors use the back characters.

chars: ['.', '¸', '¹', '`', '*', '_', '°', 'ª', '^', '+', '±', '¢', '®', '"', 'υ',
            '»', '½', '¾', 'h', 'e', '8', 's', 'p', '=', '/', '$', '§', 'ξ', 'u', '6', '9',
            '5', 'y', 'j', 'd', 'q', 'H', 'ç', 'B', 'V', '8', 'Z', 'W', 'S',
            '%', 'e', 'n', 'm', '&', 'à', 'ω', 'Ψ', 'o', '#', 'k', '●', '♦', '♥']

How to use

Add the following code into the tag:

Activate the plugin with the following code:

$(function () { $("img").matrix(); });

Code source:

https://www.php.cn/link/90e2217cd253377081205243ac24b03a

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