html5+canvas几何模型3D运动动画

1、新建html文档。

2、书写hmtl代码。<canvas id=c></canvas>

3、书写css代码。<style>body { margin: 0; overflow: hi颊俄岿髭dden; background: #000; }#c { width: 100%; height: 100vh; }</style>

4、书写并添加js代码。<script>var {atan2,sqrt,sin,cos,PI,acos} = Math;function project3D(x荑樊综鲶,y,z,vars){ x-=vars.camX,y-=vars.camY,z-=vars.camZ; p=atan2(x,z),d=sqrt(z*z+x*x),x=sin(p-vars.yaw)*d,z=cos(p-vars.yaw)*d; p=atan2(y,z),d=sqrt(y*y+z*z),y=sin(p-vars.pitch)*d,z=cos(p-vars.pitch)*d; n=-9,b=1,l=9,d=1,e=0,f=0,g=x,h=z,k=(h-f)*(l-n)-(g-e)*(d-b),m=((g-e)*(b-f)-(h-f)*(n-e))/k; return {x:vars.cx+(n+m*(l-n))*vars.scale,y:vars.cy+y/z*vars.scale,d:sqrt(x*x+y*y+z*z)};}function elevation(x,y,z){ return acos(z / sqrt(x*x+y*y+z*z));}</script>

5、代码整体结构。

6、查看效果。