分享一个可交互的小场景（二）

前些天发现了一个巨牛的人工智能学习网站，通俗易懂，风趣幽默，忍不住分享一下给大家。点击跳转到网站。

先看效果：

再看代码： JS部分

<script>
    var rotateDiv = document.getElementById('rot');
    var rotateIcons = document.getElementById('rot-icons');
    var clickRotateDiv = document.getElementById('click-rot');
    var angle = 0;

    clickRotateDiv.onclick = function() {
        angle += 60;
        rotateDiv.style.transform = 'rotate(' + angle + 'deg)';
        rotateIcons.style.transform = 'rotate(' + angle + 'deg)';
    };

    var step = 2;
    var color1 = 'rgba(0,0,0,0.5)';
    var color2 = 'rgba(0,0,0,0.1)';

    var gradient = ' conic-gradient(';
    for (var i = 0; i < 360; i += step) {
        var color = i % (2 * step) === 0 ? color1 : color2;
        gradient += color + ' ' + i + 'deg, ';
    }
    gradient = gradient.slice(0, -2) + '), rgb(85 93 108)';

    rotateDiv.style.background = gradient;


    var toggles = document.querySelectorAll('.toggle');
    var tempElement = document.querySelector('.temp');

    let isAnimating = false; // 添加标志以指示动画是否处于活动状态

    toggles.forEach(function(toggle) {
        toggle.addEventListener('click', function() {
            if (this.classList.contains('active') || isAnimating) { // 检查动画是否处于活动状态
                return;
            }
            toggles.forEach(function(toggle) {
                toggle.classList.remove('active');
            });
            this.classList.add('active');
            var tempValue = parseFloat(tempElement.textContent);
            if (this.id === 'toggle-cel') {
                var celsius = Math.round((tempValue - 32) * 5 / 9);
                tempElement.textContent = celsius + '°C';
            } else if (this.id === 'toggle-far') {
                var fahrenheit = Math.round(tempValue * 9 / 5 + 32);
                tempElement.textContent = fahrenheit + '°F';
            }
        });
    });

    let currentTempF = 34; // 使用以华氏度为单位的初始温度进行初始化


    function easeInOutCubic(t) {
        return t<.5 ? 4*t*t*t : (t-1)*(2*t-2)*(2*t-2)+1;
    }

    function changeTemp(element, newTemp) {
        let unit = element.innerHTML.includes("F") ? "°F" : "°C";
        let currentTemp = unit === "°F" ? currentTempF : Math.round((currentTempF - 32) * 5 / 9);
        let finalTemp = unit === "°F" ? newTemp : Math.round((newTemp - 32) * 5 / 9);

        let duration = 2000; // 动画的持续时间（毫秒）
        let startTime = null;

        function animate(currentTime) {
            if (startTime === null) {
                startTime = currentTime;
            }

            let elapsed = currentTime - startTime;
            let progress = Math.min(elapsed / duration, 1);
            progress = easeInOutCubic(progress);

            let tempNow = Math.round(currentTemp + (progress * (finalTemp - currentTemp)));
            element.innerHTML = `${tempNow}${unit}`;

            if (progress < 1) {
                requestAnimationFrame(animate);
            } else {
                // 动画完成后更新currentTempF
                currentTempF = newTemp;
                isAnimating = false; // 动画完成后重置标志
            }
        }

        isAnimating = true; // 动画开始时设置标志
        requestAnimationFrame(animate);
    }


    window.onload = function() {
        const sixths = Array.from(document.querySelectorAll('.sixths'));
        let index = 0;
        let temp = document.querySelector('.temp');

        document.querySelector('#rot-icons').addEventListener('click', () => {
            sixths[index].classList.remove('active');
            index = (index + 1) % sixths.length;
            sixths[index].classList.add('active');
            if (index == 0 ) {
                changeTemp(temp, 34);
                console.log("sun")
                document.querySelector('#mountains').classList.remove("snow");
                document.querySelector('#mountains').classList.remove("clouds");
            } else if (index == 1) {
                changeTemp(temp, 27);
                console.log("sunset")
                document.querySelector('#mountains').classList.add("sunset");
            } else if (index == 2) {
                changeTemp(temp, 14);
                console.log("moon")
                document.querySelector('#mountains').classList.remove("sunset");
                document.querySelector('#mountains').classList.add("moon");
            } else if (index == 3) {
                changeTemp(temp, 16);
                console.log("clouds")
                document.querySelector('#mountains').classList.add("clouds");
            } else if (index == 4) {
                changeTemp(temp, 8);
                console.log("storm")
                document.querySelector('#mountains').classList.add("storm");
            } else if (index == 5) {
                changeTemp(temp, -4);
                console.log("snow")
                document.querySelector('#mountains').classList.remove("moon");
                document.querySelector('#mountains').classList.remove("storm");
                document.querySelector('#mountains').classList.add("snow");
            }

            let loadingBar = document.querySelector('.loading-bar');
            loadingBar.classList.add('active');

            setTimeout(() => {
                loadingBar.classList.remove('active');
            }, 1200);
        });
    };
</script>
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