JS片段：
[removed]
var {atan2,sqrt,sin,cos,PI,acos} = Math;
function project3D(x,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));
}
function subdivide(shape,subdivisions){
var t=shape.segs.length;
for(var i=0;i
2021-12-12 22:08:08
323KB
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