v;};vec3.toString=function(a){return'vec3('+a[0]+', '+a[1]+', '+a[2]+')';};mat2d.translateXY=function(out,x,y){vec2.set(tmpVec2,x,y);mat2d.translate(out,out,tmpVec2);};mat2d.scaleXY=function(out,x,y){vec2.set(tmpVec2,x,y);mat2d.scale(out,out,tmpVec2);};vec4.unitize=function(out,a){out[0]=a[0]/a[3];out[1]=a[1]/a[3];out[2]=a[2]/a[3];out[3]=1;return out;};vec2.copyFromVec4=function(out,a){vec4.unitize(tmpVec4,a);vec2.copy(out,tmpVec4);};function logOrLog10(x,base){if(base===10)return Math.log10(x);return Math.lo...