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- import{u,m as f,i as l,T as p,c as a,h as o,l as c,a as F,p as m,b as _,x as y,y as b,o as w,d as v,g,j as T,V as A,q as N,A as B,L as E,B as L}from"./BufferView.f5101c27.js";import{e as U}from"./types.44c7402c.js";class n{constructor(e,t){this.layout=e,this.buffer=typeof t=="number"?new ArrayBuffer(t*e.stride):t;for(const i of e.fieldNames){const r=e.fields.get(i);this[i]=new r.constructor(this.buffer,r.offset,this.stride)}}get stride(){return this.layout.stride}get count(){return this.buffer.byteLength/this.stride}get byteLength(){return this.buffer.byteLength}getField(e,t){const i=this[e];return i&&i.elementCount===t.ElementCount&&i.elementType===t.ElementType?i:null}slice(e,t){return new n(this.layout,this.buffer.slice(e*this.stride,t*this.stride))}copyFrom(e,t,i,r){const s=this.stride;if(s%4==0){const h=new Uint32Array(e.buffer,t*s,r*s/4);new Uint32Array(this.buffer,i*s,r*s/4).set(h)}else{const h=new Uint8Array(e.buffer,t*s,r*s);new Uint8Array(this.buffer,i*s,r*s).set(h)}}}class d{constructor(){this.stride=0,this.fields=new Map,this.fieldNames=[]}vec2f(e,t){return this._appendField(e,u,t),this}vec2f64(e,t){return this._appendField(e,f,t),this}vec3f(e,t){return this._appendField(e,l,t),this}vec3f64(e,t){return this._appendField(e,p,t),this}vec4f(e,t){return this._appendField(e,a,t),this}vec4f64(e,t){return this._appendField(e,o,t),this}mat3f(e,t){return this._appendField(e,c,t),this}mat3f64(e,t){return this._appendField(e,F,t),this}mat4f(e,t){return this._appendField(e,m,t),this}mat4f64(e,t){return this._appendField(e,_,t),this}vec4u8(e,t){return this._appendField(e,y,t),this}f32(e,t){return this._appendField(e,b,t),this}f64(e,t){return this._appendField(e,w,t),this}u8(e,t){return this._appendField(e,v,t),this}u16(e,t){return this._appendField(e,g,t),this}i8(e,t){return this._appendField(e,T,t),this}vec2i8(e,t){return this._appendField(e,A,t),this}vec2i16(e,t){return this._appendField(e,N,t),this}vec2u8(e,t){return this._appendField(e,B,t),this}vec4u16(e,t){return this._appendField(e,E,t),this}u32(e,t){return this._appendField(e,L,t),this}_appendField(e,t,i){const r=t.ElementCount*U(t.ElementType),s=this.stride;this.fields.set(e,{size:r,constructor:t,offset:s,optional:i}),this.stride+=r,this.fieldNames.push(e)}alignTo(e){return this.stride=Math.floor((this.stride+e-1)/e)*e,this}hasField(e){return this.fieldNames.includes(e)}createBuffer(e){return new n(this,e)}createView(e){return new n(this,e)}clone(){const e=new d;return e.stride=this.stride,e.fields=new Map,this.fields.forEach((t,i)=>e.fields.set(i,t)),e.fieldNames=this.fieldNames.slice(),e.BufferType=this.BufferType,e}}function x(){return new d}export{x as T};
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