@doegis/core/views/2d/engine/webgl/SpriteMosaic.js

DOE GIS API

import t from"../../../../core/Error.js";import{SPRITE_PADDING as e}from"./definitions.js";import{log2 as i}from"./GeometryUtils.js";import s from"./Rect.js";import a from"./RectangleBinPack.js";import{PixelFormat as r,PixelType as o}from"../../../webgl/enums.js";import{Texture as h}from"../../../webgl/Texture.js";function c(t){return t&&"static"===t.type}class n{constructor(t,e,i=0){this._mosaicPages=[],this._maxItemSize=0,this._currentPage=0,this._pageWidth=0,this._pageHeight=0,this._mosaicRects=new Map,this._spriteCopyQueue=[],this.pixelRatio=1,(t<=0||e<=0)&&console.error("Sprites mosaic defaultWidth and defaultHeight must be greater than zero!"),this._pageWidth=t,this._pageHeight=e,i>0&&(this._maxItemSize=i),this.pixelRatio=window.devicePixelRatio||1,this._binPack=new a(this._pageWidth,this._pageHeight);const s=Math.floor(this._pageWidth),r=Math.floor(this._pageHeight);this._mosaicPages.push({mosaicsData:{type:"static",data:new Uint32Array(s*r)},size:[this._pageWidth,this._pageHeight],dirty:!0,texture:void 0})}getWidth(t){return t>=this._mosaicPages.length?-1:this._mosaicPages[t].size[0]}getHeight(t){return t>=this._mosaicPages.length?-1:this._mosaicPages[t].size[1]}getPageTexture(t){return t<this._mosaicPages.length?this._mosaicPages[t].texture:null}has(t){return this._mosaicRects.has(t)}get itemCount(){return this._mosaicRects.size}getSpriteItem(t){return this._mosaicRects.get(t)}addSpriteItem(t,i,a,r,o,h,n=1){if(this._mosaicRects.has(t))return this._mosaicRects.get(t);let g,p,m;if(c(a))[g,p,m]=this._allocateImage(i[0],i[1]);else{g=new s(0,0,i[0],i[1]),p=this._mosaicPages.length;const t=void 0;this._mosaicPages.push({mosaicsData:a,size:[i[0]+2*e,i[1]+2*e],dirty:!0,texture:t})}if(g.width<=0||g.height<=0)return null;const _={rect:g,width:i[0],height:i[1],sdf:o,simplePattern:h,pixelRatio:n,page:p};return this._mosaicRects.set(t,_),c(a)&&this._copy({rect:g,spriteSize:i,spriteData:a.data,page:p,pageSize:m,repeat:r,sdf:o}),_}hasItemsToProcess(){return 0!==this._spriteCopyQueue.length}processNextItem(){const t=this._spriteCopyQueue.pop();t&&this._copy(t)}getSpriteItems(t){const e={};for(const i of t)e[i]=this.getSpriteItem(i);return e}getMosaicItemPosition(t){const i=this.getSpriteItem(t),s=i&&i.rect;if(!s)return null;s.width=i.width,s.height=i.height;const a=i.width,r=i.height,o=e,h=this._mosaicPages[i.page];return{size:[i.width,i.height],tl:[(s.x+o)/h[0],(s.y+o)/h[1]],br:[(s.x+o+a)/h[0],(s.y+o+r)/h[1]],page:i.page}}bind(t,e,i=0,s=0){const a=this._mosaicPages[i],r=a.mosaicsData;let o=a.texture;if(o||(o=g(t,a.size),a.texture=o),o.setSamplingMode(e),c(r))t.bindTexture(o,s),a.dirty&&(o.setData(new Uint8Array(r.data.buffer)),o.generateMipmap());else{r.data.bindFrame(t,o,s),o.generateMipmap()}a.dirty=!1}static _copyBits(t,e,i,s,a,r,o,h,c,n,g){let p=s*e+i,m=h*r+o;if(g){m-=r;for(let o=-1;o<=n;o++,p=((o+n)%n+s)*e+i,m+=r)for(let e=-1;e<=c;e++)a[m+e]=t[p+(e+c)%c]}else for(let _=0;_<n;_++){for(let e=0;e<c;e++)a[m+e]=t[p+e];p+=e,m+=r}}_copy(i){if(i.page>=this._mosaicPages.length)return;const s=this._mosaicPages[i.page],a=s.mosaicsData;if(!c(s.mosaicsData))throw new t("mapview-invalid-resource","unsuitable data type!");const r=i.spriteData,o=a.data;o&&r||console.error("Source or target images are uninitialized!"),n._copyBits(r,i.spriteSize[0],0,0,o,i.pageSize[0],i.rect.x+e,i.rect.y+e,i.spriteSize[0],i.spriteSize[1],i.repeat),s.dirty=!0}_allocateImage(t,r){t+=2*e,r+=2*e;const o=Math.max(t,r);if(this._maxItemSize&&this._maxItemSize<o){const e=2**Math.ceil(i(t)),a=2**Math.ceil(i(r)),o=new s(0,0,t,r);return this._mosaicPages.push({mosaicsData:{type:"static",data:new Uint32Array(e*a)},size:[e,a],dirty:!0,texture:void 0}),[o,this._mosaicPages.length-1,[e,a]]}const h=this._binPack.allocate(t,r);if(h.width<=0){const e=this._mosaicPages[this._currentPage];return!e.dirty&&c(e.mosaicsData)&&(e.mosaicsData.data=null),this._currentPage=this._mosaicPages.length,this._mosaicPages.push({mosaicsData:{type:"static",data:new Uint32Array(this._pageWidth*this._pageHeight)},size:[this._pageWidth,this._pageHeight],dirty:!0,texture:void 0}),this._binPack=new a(this._pageWidth,this._pageHeight),this._allocateImage(t,r)}return[h,this._currentPage,[this._pageWidth,this._pageHeight]]}dispose(){this._binPack=null;for(const t of this._mosaicPages){const e=t.texture;e&&e.dispose();const i=t.mosaicsData;if(!c(i)){i.data.destroy()}}this._mosaicPages=null,this._mosaicRects.clear()}}function g(t,e){return new h(t,{pixelFormat:r.RGBA,dataType:o.UNSIGNED_BYTE,width:e[0],height:e[1]},null)}export{n as default};