canvas实现炫酷泡泡穿透彩色弹珠爆炸粒子动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：粒子

代码描述：canvas实现炫酷泡泡穿透彩色弹珠爆炸粒子动画效果代码

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, html{
  margin: 0;
  height: 100vh;
  background: linear-gradient(-45deg, #204, #000);
  overflow: hidden;
}
#c{
  border: 3px solid #0Ff3;
  position: absolute;
  background: #04f1;
  left: 50%;
  top: 50%;
  border-radius: 10px;
  transform: translate(-50%, -50%);
}
</style>
</head>
<body>

<canvas id=c></canvas>
<!-- partial -->
  <script >
      c = document.querySelector('#c')
c.width = 1920
c.height = 1080
x = c.getContext('2d')
C = Math.cos
S = Math.sin
t = 0
T = Math.tan

rsz = window.onresize = () =>{
  let b = document.body
  let margin = 10
  let n
  let d = .5625
  if(b.clientHeight/b.clientWidth > d){
    c.style.width = `${(n=b.clientWidth) - margin*2}px`
    c.style.height = `${n*d - margin*2}px`
  }else{
    c.style.height = `${(n=b.clientHeight) - margin*2}px`
    c.style.width = `${n/d - margin*2}px`
  }
}

rsz()

async function Draw(){
  if(!t){
    oX = oY = oZ = 0
    Rn = Math.random
    R = (Rl,Pt,Yw,m) => {
      let p
      M = Math
      A = M.atan2
      H = M.hypot
      X = S(p=A(X,Z)+Yw) * (d=H(X,Z))
      Z = C(p)*d
      X = S(p=A(X,Y)+Rl) * (d=H(X,Y))
      Y = C(p) * d
      Y = S(p=A(Y,Z)+Pt) * (d=H(Y,Z))
      Z = C(p)*d
      if(m){
        X+=oX
        Y+=oY
        Z+=oZ
      }
    }
    
    R2=(Rl,Pt,Yw,m=false)=>{
      M=Math
      A=M.atan2
      H=M.hypot
      if(m){
        X-=oX
        Y-=oY
        Z-=oZ
      }
      X=S(p=A(X,Y)+Rl)*(d=H(X,Y))
      Y=C(p)*d
      Y=S(p=A(Y,Z)+Pt)*(d=H(Y,Z))
      Z=C(p)*d
      X=S(p=A(X,Z)+Yw)*(d=H(X,Z))
      Z=C(p)*d
    }

    Q = () => [c.width/2+X/Z*900, c.height/2+Y/Z*900]
    I=(A,B,M,D,E,F,G,H)=>(K=((G-E)*(B-F)-(H-F)*(A-E))/(J=(H-F)*(M-A)-(G-E)*(D-B)))>=0&&K<=1&&(L=((M-A)*(B-F)-(D-B)*(A-E))/J)>=0&&L<=1?[A+K*(M-A),B+K*(D-B)]:0
    
    Normal = (facet, autoFlipNormals=false, X1=0, Y1=0, Z1=0) => {
      let ax = 0, ay = 0, az = 0
      facet.map(q_=>{ ax += q_[0], ay += q_[1], az += q_[2] })
      ax /= facet.length, ay /= facet.length, az /= facet.length
      let b1 = facet[2][0]-facet[1][0], b2 = facet[2][1]-facet[1][1], b3 = facet[2][2]-facet[1][2]
      let c1 = facet[1][0]-facet[0][0], c2 = facet[1][1]-facet[0][1], c3 = facet[1][2]-facet[0][2]
      crs = [b2*c3-b3*c2,b3*c1-b1*c3,b1*c2-b2*c1]
      d = Math.hypot(...crs)+.001
      let nls = 1 //normal line length
      crs = crs.map(q=>q/d*nls)
      let X1_ = ax, Y1_ = ay, Z1_ = az
      let flip = 1
      if(autoFlipNormals){
        let d1_ = Math.hypot(X1_-X1,Y1_-Y1,Z1_-Z1)
        let d2_ = Math.hypot(X1-(ax + crs[0]/99),Y1-(ay + crs[1]/99),Z1-(az + crs[2]/99))
        flip = d2_>d1_?-1:1
      }
      let X2_ = ax + (crs[0]*=flip), Y2_ = ay + (crs[1]*=flip), Z2_ = az + (crs[2]*=flip)
      return [X1_, Y1_, Z1_, X2_, Y2_, Z2_]
    }
      
    async function loadOBJ(url, scale, tx, ty, tz, rl, pt, yw, recenter=true) {
      let res
      await fetch(url, res => res).then(data=>data.text()).then(data=>{
        a=[]
        data.split("\nv ").map(v=>{
          a=[...a, v.split("\n")[0]]
        })
        a=a.filter((v,i)=>i).map(v=>[...v.split(' ').map(n=>(+n.replace("\n", '')))])
        ax=ay=az=0
        a.map(v=>{
          v[1]*=-1
          if(recenter){
            ax+=v[0]
            ay+=v[1]
            az+=v[2]
          }
        })
        ax/=a.length
        ay/=a.length
        az/=a.length
        a.map(v=>{
          X=(v[0]-ax)*scale
          Y=(v[1]-ay)*scale
          Z=(v[2]-az)*scale
          R2(rl,pt,yw,0)
          v[0]=X
          v[1]=Y * (url.indexOf('bug')!=-1?2:1)
          v[2]=Z
        })
        maxY=-6e6
        a.map(v=>{
          if(v[1]>maxY)maxY=v[1]
        })
        a.map(v=>{
          v[1]-=maxY-oY
          v[0]+=tx
          v[1]+=ty
          v[2]+=tz
        })

        b=[]
        data.split("\nf ").map(v=>{
          b=[...b, v.split("\n")[0]]
        })
        b.shift()
        b=b.map(v=>v.split(' '))
        b=b.map(v=>{
          v=v.map(q=>{
            return +q.split('/')[0]
          })
          v=v.filter(q=>q)
          return v
        })

        res=[]
        b.map(v=>{
          e=[]
          v.map(q=>{
            e=[...e, a[q-1]]
          })
          e = e.filter(q=>q)
          res=[...res, e]
        })
      })
      return res
    }

    reflect = (a, n) => {
      let d1 = Math.hypot(...a)+.0001
      let d2 = Math.hypot(...n)+.0001
      a[0]/=d1
      a[1]/=d1
      a[2]/=d1
      n[0]/=d2
      n[1]/=d2
      n[2]/=d2
      let dot = -a[0]*n[0] + -a[1]*n[1] + -a[2]*n[2]
      let rx = -a[0] - 2 * n[0] * dot
      let ry = -a[1] - 2 * n[1] * dot
      let rz = -a[2] - 2 * n[2] * dot
      return [-rx*d1, -ry*d1, -rz*d1]
    }

    geoSphere = (mx, my, mz, iBc, size) => {
      let collapse=0
      let B=Array(iBc).fill().map(v=>{
        X = Rn()-.5
        Y = Rn()-.5
        Z = Rn()-.5
        return  [X,Y,Z]
      })
      for(let m=99;m--;){
        B.map((v,i)=>{
          X = v[0]
          Y = v[1]
          Z = v[2]
          B.map((q,j)=>{
            if(j!=i){
              X2=q[0]
              Y2=q[1]
              Z2=q[2]
              d=1+(Math.hypot(X-X2,Y-Y2,Z-Z2)*(3+iBc/40)*3)**4
              X+=(X-X2)*99/d
              Y+=(Y-Y2)*99/d
              Z+=(Z-Z2)*99/d
            }
          })
          d=Math.hypot(X,Y,Z)
          v[0]=X/d
          v[1]=Y/d
          v[2]=Z/d
          if(collapse){
            d=25+Math.hypot(X,Y,Z)
            v[0]=(X-X/d)/1.1
            v[1]=(Y-Y/d)/1.1         
            v[2]=(Z-Z/d)/1..........完整代码请登录后点击上方下载按钮下载查看