angle

angle精品文章

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  转盘抽奖脚本自己撸

  ...tomOps = options; // 默认参数配置 this._parameters = { angle: 0, // 元素初始角度设置 animateTo: 0, // 目标角度 step: null, // 旋转过程中 回调函数 easing: function(t, b, c, d) { return ...

  赵春朋 2019-08-23 11:01 评论0 收藏0
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  游戏动画必备干货——跟动画有关的数学和物理公式

  ... window.requestAnimationFrame(drawFrame,canvas); value=center+Math.sin(angle)+range; angle+=speed; }()); demo as public function onEnterFrame(event:Event){ value=center+Math.sin(angle)*...

  CNZPH 2019-08-21 10:24 评论0 收藏0
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  Canvas绘制动态进度条圆环

  .../圆环厚度 let innerRadius = radius - thickness //内环半径 let startAngle = -90 //开始角度 let endAngle = 180 //结束角度 let x = 0 //圆心x坐标 let y = 0 //圆心y坐标 let canvas = document.getElementById(tutorial); canvas.wi...

  Wuv1Up 2019-08-02 15:37 评论0 收藏0
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  Canvas绘制动态进度条圆环

  .../圆环厚度 let innerRadius = radius - thickness //内环半径 let startAngle = -90 //开始角度 let endAngle = 180 //结束角度 let x = 0 //圆心x坐标 let y = 0 //圆心y坐标 let canvas = document.getElementById(tutorial); canvas.wi...

  edagarli 2019-08-26 10:22 评论0 收藏0
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  Canvas绘制动态进度条圆环

  .../圆环厚度 let innerRadius = radius - thickness //内环半径 let startAngle = -90 //开始角度 let endAngle = 180 //结束角度 let x = 0 //圆心x坐标 let y = 0 //圆心y坐标 let canvas = document.getElementById(tutorial); canvas.wi...

  quietin 2019-08-30 15:44 评论0 收藏0
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  计算一点绕另一点旋转n度后的坐标（亲测）

  ...一、 假设o点为圆心(原点0,0)，则有计算公式： b.x = a.xcos(angle) - a.ysin(angle) b.y = a.xsin(angle) + a.ycos(angle) 其中顺时针旋转为正，逆时针旋转为负，角度angle是弧度值，如旋转30度转换为弧度为：angle = pi/180 * 30。 二、 若o不是原点，...

  Doyle 2019-08-23 18:17 评论0 收藏0
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  《每周一点canvas动画》——圆周运动

  ...tContext(2d); var ball = new Ball(); var angle = 0, // 旋转的角度 centerX = canvas.width/2, centerY = canvas.height/2, ...

  EscapedDog 2019-08-20 14:25 评论0 收藏0
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  Canvas呈现3D业务逻辑关系

  ...this, id); } twaver.Util.ext(CNode, twaver.Node, { _split:1/3, _cubeAngle:Math.PI/6, getVectorUIClass: function (){ return CNodeUI; }, setSplit:function(split){ this._split = spl...

  Alliot 2019-08-20 15:21 评论0 收藏0
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  绕圆弧动画的向量解决方式

  ... var i = 0,count = 200; var PI = Math.PI; function animateAngle() { var angle = (angle1 * (count-i) + angle2 * (i)) / count; var x = cx + Math.cos(angle) * r, ...

  ybak 2019-08-23 18:11 评论0 收藏0
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  怎样用JavaScript和HTML5 Canvas绘制图表

  ...data[categ]; total_value += val; } var start_angle = 0; for (categ in this.options.data){ val = this.options.data[categ]; var slice_ang...

  doodlewind 2019-08-21 15:50 评论0 收藏0