CSS3 & transition & animation

https://developer.mozilla.org/en-US/docs/Web/CSS/transition-timing-function

.circle-box{
    position: relative;
    margin: 100px auto;
    width: 300px;
    height: 300px;
    background: #ccc;
    border: 1px solid red;
    border-radius: 50%;
    transform: rotate(var(--defaultAngle));
    transition: 1s 0.5s all ease-in-out;
    /* animation: autoRotate 1s 1 both ease; */
}

.rotate-angle {
    transform: rotate(var(--newAngle));
}

https://developer.mozilla.org/zh-CN/docs/Web/CSS/animation-timing-function

.circle-box{
    position: relative;
    margin: 100px auto;
    width: 300px;
    height: 300px;
    background: #ccc;
    border: 1px solid red;
    border-radius: 50%;
    transform: rotate(var(--defaultAngle));
    /*transition: 1s 0.5s all ease-in-out; */
     animation: autoRotate 1s 1 both ease;
}

.rotate-angle {
    transform: rotate(var(--newAngle));
}

@keyframes autoRotate {
    0% {
        transform: rotate3d(0, 0, 1, var(--defaultAngle));
    }
    to {
        transform: rotate3d(0, 0, 1, var(--newAngle));
    }
}

@keyframes autoRotate {
    0% {
        transform: rotate3d(0, 0, 1, var(--beginAngle));
    }
    to {
        transform: rotate3d(0, 0, 1, var(--endAngle));
    }
}

full demo

@charset "UTf-8";

/* app.css */

:root{
    --beginAngle: 0deg;
    --endAngle: 0deg;
    /* fixed angle enums */
    --defaultAngle: 0deg;
    --newAngle: 30deg;
    /* positive */
    --rotateAngle30: 30deg;
    --rotateAngle60: 60deg;
    --rotateAngle90: 90deg;
    --rotateAngle120: 120deg;
    --rotateAngle150: 150deg;
    --rotateAngle180: 180deg;
    --rotateAngle210: 210deg;
    --rotateAngle240: 240deg;
    --rotateAngle270: 270deg;
    --rotateAngle300: 300deg;
    --rotateAngle330: 330deg;
    --rotateAngle360: 360deg;
    /* negative */
    --rotateAngle-30: -30deg;
    --rotateAngle-60: -60deg;
    --rotateAngle-90: -90deg;
    --rotateAngle-120: -120deg;
    --rotateAngle-150: -150deg;
    --rotateAngle-180: -180deg;
    --rotateAngle-210: -210deg;
    --rotateAngle-240: -240deg;
    --rotateAngle-270: -270deg;
    --rotateAngle-300: -300deg;
    --rotateAngle-330: -330deg;
    --rotateAngle-360: -360deg;
}

* {
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
}

html, body, div, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, object, code, legend, button, input, textarea, th, td, a, img, video {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
}

.data-btn{
    padding: 1px 6px;
    border-width: 2px;
    border-style: outset;
    border-color: buttonface;
    border-image: initial;
    cursor: default;
}


.circle-box{
    position: relative;
    margin: 100px auto;
    width: 300px;
    height: 300px;
    background: #ccc;
    border: 1px solid red;
    border-radius: 50%;
    transform: rotate(var(--defaultAngle));
    transition: 1s 0.5s all ease-in-out;
    /* animation: autoRotate 1s 1 both ease; */
}

.rotate-angle {
    transform: rotate(var(--newAngle));
}

@keyframes autoRotate {
    0% {
        transform: rotate3d(0, 0, 1, var(--defaultAngle));
    }
    to {
        transform: rotate3d(0, 0, 1, var(--newAngle));
    }
}

@keyframes autoRotate {
    0% {
        transform: rotate3d(0, 0, 1, var(--beginAngle));
    }
    to {
        transform: rotate3d(0, 0, 1, var(--endAngle));
    }
}


.menus-mask {
    position: absolute;
    top: 230px;
    left: 50%;
    transform: translate(-50%);
    width: 600px;
    height: 400px;
    background: rgba(123,123,123,0.5);
    z-index: 999;
}
.horizontal-line{
    position: absolute;
    width: 50vw;
    height: 0;
    border-top: 1px solid red;
    top: calc(100px + 300px / 2);
    left: 50%;
    transform: translateX(-50%);
}

.vertical-line {
    position: absolute;
    width: 0;
    height: calc(50vh + 300px /2 );
    border-left: 1px solid red;
    top: calc(100px / 2);
    left: 50%;
    transform: translateX(-50%);
}

.circle {
    /* position: absolute; */
    width: 30px;
    height: 30px;
    line-height: 30px;
    background: #f0f;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    border-radius: 0 0 15px 15px;
}
/* 
.circle::before {
    content: "";
    width: 6px;
    height: 6px;
    position: absolute;
    left: 9px;
    top: 0px;
    border: 2px solid #FFF;
    border-radius: 50%;
    z-index: -1;
}
.circle::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 100%;
    height: 30px;
    width: 30px;
    background-color: #00c991;
    border-radius: 50% 50% 0;
    transform: translate(-50%, -50%) rotate(45deg);
    z-index: -1;
} */

.circle-highlight::after {
    background-color: #f82eb5;
}


.circle1{
    transform: rotate(-60deg) translateX(-50px) translateY(35px);
}
.circle2{
    transform: rotate(-30deg) translateX(calc(150px - 87px)) translateY(9px);
}
.circle3{
    transform: rotate(0deg) translateX(calc(150px - 15px)) translateY(-73px);
}
.circle4{
    transform: rotate(30deg) translateX(calc(150px + -13px)) translateY(-175px);
}
.circle5{
    transform: rotate(60deg) translateX(80px) translateY(-255px);
}
.circle6{
    transform: rotate(90deg) translateX(-15px) translateY(calc(-300px + 15px));
}

.circle7{
    transform: rotate(120deg) translateX(calc(-106px)) translateY(-243px);
}
.circle8{
    transform: rotate(150deg) translateX(-155px) translateY(-150px);
}
.circle9{
    transform: rotate(180deg) translateX(calc(-150px + 15px)) translateY(-45px);
}
.circle10{
    transform: rotate(-150deg) translateX(-47px) translateY(35px);
}
.circle11{
    transform: rotate(-120deg) translateX(77px) translateY(50px);
}
.circle12{
    transform: rotate(-90deg) translateX(calc(195px)) translateY(-15px);
}

.menus {
    background: url("./menus.svg")
}

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cubic-bezier

cubic-bezier(p1, p2, p3, p4)

An author defined cubic-Bezier curve, where the p1 and p3 values must be in the range of 0 to 1.

https://developer.mozilla.org/en-US/docs/Web/CSS/transition-timing-function#cubic-bezier-timing-function

.test{
    transition-timing-function: cubic-bezier(.29, 1.01, 1, -0.68);
}

.cb {
    transition-timing-function: cubic-bezier(0.2,-2,0.8,2);
}

贝塞尔曲线

https://developer.mozilla.org/en-US/docs/Web/CSS/timing-function
https://developer.mozilla.org/zh-CN/docs/Web/CSS/timing-function

https://en.wikipedia.org/wiki/B%C3%A9zier_curve#Cubic_B.C3.A9zier_curves

repl online

https://cubic-bezier.com/#.17,.67,.83,.67

https://cubic-bezier.com/

https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Animations/Using_CSS_animations

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