Design and implementation of Swoole's high-performance color generator

In recent years, with the rapid development of Internet applications, people have higher and higher requirements for web design and user experience. Among them, the use of color is a very important part. In web design, color can greatly affect the user's sensory experience and visual effects. Therefore, how to generate beautiful colors quickly and efficiently has become a problem that web designers have to face.

In this context, the emergence of Swoole provides us with a new way of thinking that can help us solve this problem more quickly. Swoole is an open source, high-performance network communication framework that can provide asynchronous programming support, coroutine implementation and other functions. In this article, we will use the Swoole framework to implement a high-performance color generator to better cope with the color requirements in web design.

1. Design Ideas

Before designing the color generator, we need to determine some requirements and design ideas.

1. Functional requirements

The color generator needs to support the following functions:

(1) Generate random colors

(2) Generate high contrast colors

(3) Generate gradient color

(4) Generate color with complementary color effect

2. Implementation idea

We choose Swoole framework as implementation Tools, you need to consider the following implementation ideas:

(1) Use the coroutine function provided by Swoole to implement multi-coroutine asynchronous programming to respond to user requests more quickly.

(2) Establish a database of color generators to store information on various colors.

(3) Implement random number generator and various color algorithms.

(4) Add a background interface to facilitate administrators to manage and add color libraries.

2. Implementation steps

1. Establish a database

We create the following three tables in the database according to functional requirements:

(1)config : Stores the settings and configuration information of the color generator.

(2) colors: Stores information about all colors.

(3)logs: Stores the log information of the color generator.

Among them, the color information is as shown in the figure below:

{
    id: 1,          // 颜色的id
    hex: "#F06D06", // 颜色的16进制表示
    rgb: "240,109,6"，//颜色的RGB表示
    hsv: "20,97,94"，// 颜色的HSV表示
    hsl: "20,96,47"，// 颜色的HSL表示
    contrast: "#ffffff"，// 颜色的高对比度色值
    triadic: ["#06F0B9", "#B906F0"]，// 颜色的三合一色值数组
    splitComplementary: ["#F006AA", "#06F092"],// 颜色的分离互补色值数组
    analogous: ["#F00695", "#F06D06", "#F0A406"]// 颜色的类比色值数组
}

2. Using Swoole to achieve multi-coroutine asynchronous programming

We can achieve high performance through the coroutine technology provided by Swoole Concurrent asynchronous programming avoids some problems that occur in traditional multi-threaded or multi-process development methods. We choose PHP language to implement this high-performance color generator, and choose Swoole as the asynchronous programming framework. Swoole is a high-performance, asynchronous network communication framework that can provide coroutine support and has complete API documentation and rich sample code.

We can encapsulate each function into a coroutine. For example, the generation of random colors, the generation of high-contrast colors, the generation of gradient colors, and the generation of complementary colors can all be implemented through coroutines. .

3. Write a random number generator and color algorithm

(1) Random number generator

Since the setting of random numbers is very important for color generation, we Need to write a high quality random number generator. Here, we choose a time-based random number seed to simulate the generation of random numbers. The code is as follows:

function random_generator($min, $max)
{
    $decimals = strlen(strstr($min, "."));

    $diff = (float)$max - (float)$min;
    $rand = (float)$min + mt_rand(0, mt_getrandmax() - 1) / mt_getrandmax() * $diff;

    return round($rand, $decimals);
}

(2) Color algorithm

When generating colors, we need to use various algorithms To achieve this, here we only briefly introduce several commonly used algorithms.

①High contrast color algorithm

The implementation code is as follows:

function get_contrast_color($color)
{
    $rgb = css2rgb($color);

    $contrast_color = "#";
    for ($i = 0; $i < 3; $i++) {
        $c = hexdec(substr($rgb, 2 * $i, 2));
        $contrast_color .= str_pad(dechex(255 - $c), 2, '0', STR_PAD_LEFT);
    }

    return $contrast_color;
}

②Gradient color algorithm (linear gradient)

The implementation code is as follows:

function get_gradient_colors($start, $end, $steps)
{
    $colors = array();

    $start_rgb = css2rgb($start);
    $end_rgb = css2rgb($end);

    $step_size = 1.0 / ($steps - 1);

    for ($i = 0; $i < $steps; $i++) {
        $p = $i * $step_size;
        $color = array();
        for ($j = 0; $j < 3; $j++) {
            $color[$j] = (int)round((1 - $p) * $start_rgb[$j] + $p * $end_rgb[$j]);
        }
        $colors[] = rgb2css($color);
    }

    return $colors;
}

③Complementary Color Algorithm

The implementation code is as follows:

function get_complementary_colors($color)
{
    $rgb = css2rgb($color);

    $r = 255 - $rgb[0];
    $g = 255 - $rgb[1];
    $b = 255 - $rgb[2];

    return array(rgb2css(array($r, $g, $b)));
}

④The analog color algorithm

The implementation code is as follows:

function get_analogous_colors($color)
{
    $rgb = css2rgb($color);

    $hsl = rgb2hsl($rgb);

    $low = [($hsl[0] - 30) / 360, $hsl[1], $hsl[2]];
    $mid = [($hsl[0] - 20) / 360, $hsl[1], $hsl[2]];
    $high = [($hsl[0] + 20) / 360, $hsl[1], $hsl[2]];

    return array(rgb2css(hsl2rgb($low)), rgb2css(hsl2rgb($mid)), rgb2css(hsl2rgb($high)));
}

4. Add background interface

By adding a background interface, we can easily manage the color library and add new colors. Here we use Bootstrap to implement the design of the backend interface.

In the management interface, we can directly use the search function to find the required color, and edit and delete the color.

3. Summary

This article mainly introduces the design and implementation of high-performance color generator using Swoole framework. By utilizing Swoole's unique coroutine and asynchronous programming technology, we can generate various colors more quickly, improving the user experience and the visual effects of the web page. At the same time, we also introduced several commonly used color algorithms, and implemented various functions of the color generator based on the algorithms.

Through this practice, we have deeply realized the powerful functions and excellent performance of the Swoole framework. We believe that it will be increasingly widely used and valued in future Internet applications.

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