canvas实现连杆机械拼字动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：动画

代码描述：canvas实现连杆机械拼字动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
<style>
    body{
  height:100%;
  /*background: radial-gradient(#00d2ff, #3a7bd5);*/
  background:black;
}
canvas{
  display:block;
  margin:0 auto;
  margin:calc(50vh - 150px) auto;
}
</style>

</head>
<body>
<!-- partial:index.partial.html -->
<canvas id="canvas">Su navegador no soporta canvas :( </canvas>
<!-- partial -->
  <script >
      
      var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var cw = canvas.width = 500,
  cx = cw / 2;
var ch = canvas.height = 300,
  cy = ch / 2;
var rad = Math.PI / 180;
var tim = .025;
var hate = true;
ctx.fillStyle = "hsla(45,90%,50%,.7)";
ctx.strokeStyle = "hsla(45,60%,40%,1)";


function Segment(x,y,w,h,rot){
  this.x = x;
  this.y = y;
  this.w = w;
  this.h = h;
  this.rot = rot*rad;
  this.pin = this.getPin();
  this.bool = true;
}
Segment.prototype.draw = function(){
  var h = this.h;
  var w = this.w;
  //var d = w + h;// diagonal ???
  var cr = h/2 // corner radius
  
  ctx.save();
  ctx.fillStyle = Grd();
  ctx.translate(this.x,this.y);
  ctx.rotate(this.rot);
  ctx.scale(this.scalex,this.scaley)
  ctx.beginPath();
  ctx.moveTo(0, -cr);
  ctx.lineTo(w, -cr);
  ctx.quadraticCurveTo(w+cr,-cr, w+cr,0);
  ctx.quadraticCurveTo(w+cr,cr, w,cr);
  ctx.lineTo(0, cr);
  ctx.quadraticCurveTo(-cr,cr, -cr,0);
  ctx.quadraticCurveTo(-cr,-cr, 0,-cr);
  ctx.fill();
  ctx.stroke();
  
  ctx.beginPath();
  ctx.arc(0, 0,2,0,2*Math.PI);
  ctx.stroke();
  
  ctx.beginPath();
  ctx.arc(w,0,2,0,2*Math.PI);
  ctx.stroke();
  
  ctx.restore();
}
Segment.prototype.getPin = function(){
  return {
    x:this.x + this.w*Math.cos(this.rot),
    y:this.y + this.w*Math.sin(this.rot)
  }
}

// H -> L
var h = [];
var h_angles = [
  [90,90],
  [-90,0],
  [0,-180],
  [-90,-90]
];
h[0] = new Segment(60,100,100,25,h_angles[0][0]);
h[1] = new Segment(h[0].pin.x,h[0].pin.y,50,25,h_angles[1][0]);
h[2] = new Segment(h[1].pin.x,h[1].pin.y,50,25,h_angles[2][0]);
h[3] = new Segment(h[2].pin.x,200,100,25,-90,h_angles[3][0]);

// A -> O
var a = [];
var a_angles = [
  [-70,-90],
  [110,0],
  [-70,0],
  [70,90],
  [-110,180],
  [180,180]
];
a[0] = new Segment(h[3].pin.x + 50,200,100,25,a_angles[0][0]);
a[1] = new Segment(a[0].pin.x,a[0].pin.y,25,25,a_angles[1][0]);
a[2] = new Segment(a[1].pin.x,a[1].pin.y,25,25,a_angles[2][0]);
a[3] = new Segment(a[2].pin.x,a[2].pin.y,100,25,a_angles[3][0]);
a[4] = new Segment(a[3].pin.x,a[3].pin.y,25,25,a_angles[4][0]);
a[5] = new Segment(a[4].pin.x,a[4].pin.y,25,25,a_angles[5][0]);

//  T -> V
var t = [];
var t_angles = [
  [-90,-110],
  [180,70],
  [-90,-70],
  [0,110]
];
t[0] = new Segment(a[5].pin.x + 100,200,100,25,t_angles[0][0]);
t[1] = new Segment(t[0].pin.x,t[0].pin.y,35,25,t_angles[1][0]);
t[2] = new Segment(a[5].pin.x + 100,200,100,25,t_angles[2][0]);
t[3] = new Segment(t[2].pin.x,t[2].pin.y,35,25,t_angles[3][0]);
//DrawT();
// E
var e = []
e[0] = new Segment(t[2].pin.x + 90,100,100,25,90);
e[1] = new Segment(e[0].pin.x,100,50,25,0);
e[2] = new Segment(e[0].pin.x,e[0].pin.y,50,25,0);
e[3] = new Segment(e[0].pin.x,e[0].pin.y,50,25,-90);
e[4] = new Segment(e[3].pin.x,e[3].pin.y,35,25,0);

Draw();


function Animacion() {
  elId = window.requestAnimationFrame(Animacion);
  ctx.clearRect(0, 0, cw, ch);
  if(hate){
  if(h[1].bool || h[2].bool ){
  if(h[1].rot < h_angles[1][1] * rad){ h[1].rot += tim;}else{h[1].rot = h_angles[1][1] * rad;h[1].bool = false;}
  if(h[2].rot > h_angles[2][1] * rad){ h[2].rot -= tim;}else{h[2].rot = h_angles[2][1] * rad;h[2].bool = false;}
  }
  else if(a[0].bool || a[1].bool || a[2].bool || a[3].bool || a[4].bool){
  if(a[0].rot > a_angles[0][1] * rad){ a[0].rot -= tim;}else{a[0].rot = a_angles[0][1] * rad;a[0].bool = false;}
  if(a[1].rot > a_angles[1][1] * rad){ a[1].rot -= tim;}else{a[1].rot = a_angles[1][1] * rad;a[1].bool = false.........完整代码请登录后点击上方下载按钮下载查看