PHP는 WeChat 미니 프로그램을 위한 CSS3 애니메이션 기술을 구현합니다.

@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
  }
  
  to {
    transform: translateX(0);
  }
}

animation: 动画名称 持续时间 运动曲线 延迟时间 重复次数 动画播放状态;

.animation {
  animation: slideInLeft 1s ease 0s 1 normal;
}

transform: 转换函数1(参数1, 参数2, ...) 转换函数2(参数1, 参数2, ...);

.transform {
  transform: translateX(100px) scale(0.8);
}

class Animation {
  public $name; // 动画名称
  public $duration; // 动画持续时间
  public $timingFunction; // 运动曲线
  public $delay; // 延迟时间
  public $iterationCount; // 重复次数
  public $direction; // 动画播放方向
  public $fillMode; // 动画填充模式
  public $keyFrames; // 关键帧
  public function __construct($name) {
    $this->name = $name;
  }
  public function setDuration($duration) {
    $this->duration = $duration;
  }
  public function setTimingFunction($timingFunction) {
    $this->timingFunction = $timingFunction;
  }
  public function setDelay($delay) {
    $this->delay = $delay;
  }
  public function setIterationCount($iterationCount) {
    $this->iterationCount = $iterationCount;
  }
  public function setDirection($direction) {
    $this->direction = $direction;
  }
  public function setFillMode($fillMode) {
    $this->fillMode = $fillMode;
  }
  public function setKeyFrames($keyFrames) {
    $this->keyFrames = $keyFrames;
  }
  public function __toString() {
    return $this->serialize();
  }
  private function serialize() {
    $str = $this->name." {
";
    $str .= "  animation-duration: ".$this->duration.";
";
    $str .= "  animation-timing-function: ".$this->timingFunction.";
";
    $str .= "  animation-delay: ".$this->delay.";
";
    $str .= "  animation-iteration-count: ".$this->iterationCount.";
";
    $str .= "  animation-direction: ".$this->direction.";
";
    $str .= "  animation-fill-mode: ".$this->fillMode.";
";
    $str .= "  animation-name: ".$this->name.";
";
    $str .= "}
";
    $str .= "@keyframes ".$this->name." {
";
    foreach($this->keyFrames as $percent => $properties) {
      $str .= "  ".$percent."% {
";
      foreach($properties as $property => $value) {
        $str .= "    ".$property.": ".$value.";
";
      }
      $str .= "  }
";
    }
    $str .= "}
";
    return $str;
  }
}

class AnimationSet {
  public $animations = array(); // 动画集合
  public function addAnimation($animation) {
    array_push($this->animations, $animation);
    return $animation;
  }
  public function __toString() {
    $str = "";
    foreach($this->animations as $animation) {
      $str .= $animation->__toString();
    }
    return $str;
  }
}

$animation1 = new Animation("slideInLeft");
$animation1->setDuration("1s");
$animation1->setTimingFunction("ease");
$animation1->setDelay("0s");
$animation1->setIterationCount("1");
$animation1->setDirection("normal");
$animation1->setFillMode("both");
$keyFrames1 = array(
  "0" => array(
    "transform" => "translateX(-100%)"
  ),
  "100" => array(
    "transform" => "translateX(0)"
  )
);
$animation1->setKeyFrames($keyFrames1);

$animation2 = new Animation("fadeIn");
$animation2->setDuration("1s");
$animation2->setTimingFunction("ease");
$animation2->setDelay("0s");
$animation2->setIterationCount("1");
$animation2->setDirection("normal");
$animation2->setFillMode("both");
$keyFrames2 = array(
  "0" => array(
    "opacity" => "0"
  ),
  "100" => array(
    "opacity" => "1"
  )
);
$animation2->setKeyFrames($keyFrames2);

$animationSet = new AnimationSet();
$animationSet->addAnimation($animation1);
$animationSet->addAnimation($animation2);

echo "<style>".$animationSet->__toString()."</style>";

<view class="slideInLeft" animation="{{animation1}}">这是一个左滑进入的动画效果</view>
<view class="fadeIn" animation="{{animation2}}">这是一个淡入效果</view>

Page({
  data: {
    animation1: "",
    animation2: ""
  },
  onLoad: function() {
    var animation1 = wx.createAnimation({duration: 1000});
    animation1.translateX(0).step();
    var animation2 = wx.createAnimation({duration: 1000});
    animation2.opacity(1).step();
    this.setData({
      animation1: animation1.export(),
      animation2: animation2.export()
    });
  }
});