@arcgis/core/layers/raster/functions/clipUtils.js

ArcGIS Maps SDK for JavaScript: A complete 2D and 3D mapping and data visualization API

/* COPYRIGHT Esri - https://js.arcgis.com/5.0.8/LICENSE.txt */
import{getMetersPerUnitForSR as t}from"../../../core/units.js";import e from"../../../geometry/Extent.js";import n from"../../../geometry/Point.js";import i from"../../support/PixelBlock.js";function a(e,n){if(e.spatialReference.equals(n))return e;const i=t(e.spatialReference),a=t(n);if(i===a)return e;const r=i/a;return{x:e.x*r,y:e.y*r}}async function r(t,e,n){if("extent"===n.type)return m(t,e,n);const{width:a,height:r}=t,h=new Uint8Array(a*r);if(!(await import("../../../geometry/operators/intersectsOperator.js")).execute(e,n))return new i({pixelType:t.pixelType,width:a,height:r,mask:h,maskIsAlpha:!1,pixels:[...t.pixels]});if("polyline"===n.type)return s(t,e,n);return(await import("../../../geometry/operators/containsOperator.js")).execute(n,e)?t:o(t,e,n)}function o(t,e,n){if(!t)return t;const{width:a,height:r}=t,o=h({geometry:n,size:[a,r],srcExtent:e,srcMask:t.mask});return new i({pixelType:t.pixelType,width:a,height:r,mask:o,maskIsAlpha:!1,pixels:[...t.pixels]})}function h(t){const{geometry:e,size:n,srcExtent:i,srcMask:a}=t,[r,o]=n;let h;const m=i.width/r,s=i.height/o,{xmin:l,ymax:p}=i;if("extent"===e.type){const t=(e.xmin-l)/m,n=(e.xmax-l)/m,i=(p-e.ymax)/s,a=(p-e.ymin)/s;h=[[[t,i],[t,a],[n,a],[n,i],[t,i]]]}else h=e.rings.map(t=>t.map(([t,e])=>[(t-l)/m,(p-e)/s]));return x(h,n,a)}function x(t,e,n){const[i,a]=e,r=new OffscreenCanvas(i,a).getContext("2d");r.fillStyle="#f00",r.beginPath(),t.forEach(t=>{r.moveTo(t[0][0],t[0][1]);for(let e=0;e<t.length;e++)r.lineTo(t[e][0],t[e][1]);r.closePath()}),r.fill();const o=r.getImageData(0,0,i,a).data,h=i*a,x=new Uint8Array(h);let m=!1;for(let s=0;s<h;s++)n&&!n[s]||(o[4*s+3]>127?x[s]=255:m=!0);return m||n?x:void 0}function m(t,e,n){const{width:a,height:r}=t,o=new Uint8Array(a*r),h=e.width/a,x=e.height/r;if(n.width/h<.5||n.height/x<.5)return new i({pixelType:t.pixelType,width:a,height:r,mask:o,pixels:[...t.pixels]});const{xmin:m,xmax:s,ymin:l,ymax:p}=e,{xmin:f,xmax:c,ymin:y,ymax:u}=n,M=Math.max(m,f),w=Math.min(s,c),d=Math.max(l,y),g=Math.min(p,u),T=.5*h,k=.5*x;if(w-M<T||g-d<k||w<m+T||M>s-T||d>p-k||g<l+k)return new i({pixelType:t.pixelType,width:a,height:r,mask:o,pixels:[...t.pixels]});const R=Math.max(0,(M-m)/h),j=Math.min(a,Math.max(0,(w-m)/h)),A=Math.max(0,(p-g)/x),z=Math.min(r,Math.max(0,(p-d)/x)),E=Math.round(R),P=Math.round(j)-1,S=Math.round(A),U=Math.round(z)-1;if(E===P&&R%1>.5&&j%1<.5||S===U&&A%1>.5&&z%1<.5)return new i({pixelType:t.pixelType,width:a,height:r,mask:o,pixels:[...t.pixels]});if(0===E&&0===S&&P===a&&U===r)return t;const v=t.mask;for(let i=S;i<=U;i++)for(let t=E;t<=P;t++){const e=i*a+t;o[e]=v?v[e]:255}return new i({pixelType:t.pixelType,width:a,height:r,mask:o,pixels:[...t.pixels]})}function s(t,e,n){const{width:a,height:r}=t,o=new Uint8Array(a*r),h=e.width/a,x=e.height/r,{xmin:m,ymax:s}=e,{paths:l}=n,p=t.mask;for(let i=0;i<l.length;i++){const t=l[i];for(let e=0;e<t.length-1;e++){const[n,i]=t[e],[l,f]=t[e+1],c=Math.min(i,f),y=Math.max(i,f),u=Math.max(0,Math.floor((s-y)/x)),M=Math.min(r-1,Math.floor((s-c)/x));if(!(M<u))if(u===M){const t=Math.min(n,l),e=Math.max(n,l),i=Math.max(0,Math.floor((t-m)/h)),r=Math.min(a-1,Math.floor((e-m)/h));if(r<i)continue;const x=u*a;for(let n=x+i;n<=x+r;n++)o[n]=p?p[n]:255}else{const t=(n-m)/h,e=(l-n)/(f-i)/h,r=x*e;for(let n=u;n<=M;n++){const h=e*(s-n*x-i)+t,m=Math.max(0,Math.floor(r>0?h-r:h)),l=Math.min(a-1,Math.floor(r>0?h:h-r));if(l<m)continue;const f=n*a;for(let t=f+m;t<=f+l;t++)o[t]=p?p[t]:255}}}}return new i({pixelType:t.pixelType,width:a,height:r,mask:o,pixels:[...t.pixels]})}function l(t,e){const{extent:i}=p(t,e,new n({x:t.pixelSize.x,y:t.pixelSize.y,spatialReference:t.spatialReference})),{extent:a}=t.extent;if(i.xmax=Math.min(i.xmax,a.xmax),i.ymax=Math.min(i.ymax,a.ymax),i.xmin<i.xmax&&i.ymin<i.ymax){const{x:e,y:n}=t.pixelSize,a=Math.round(i.width/e),r=Math.round(i.height/n);t.extent=i,t.width=a,t.height=r}}function p(t,n,i,r=!0){const{spatialReference:o}=t,{x:h,y:x}=a(i,o);let m,s,l;const p="extent"===n.type?n:n.extent;let{xmin:f,xmax:c,ymax:y,ymin:u}=p;const{xmin:M,ymax:w}=t.extent;return r?(f=M+(f>M?h*Math.round((f-M)/h):0),y=w-(y<w?x*Math.round((w-y)/x):0),c=M+(c>M?h*Math.round((c-M)/h):0),u=w-(u<w?x*Math.round((w-u)/x):0),m=new e({xmin:f,ymax:y,xmax:c,ymin:u,spatialReference:o}),s=Math.round(m.width/h),l=Math.round(m.height/x)):(s=Math.floor((c-f)/h+.8),l=Math.floor((y-u)/x+.8),f=M+(f>M?h*Math.floor((f-M)/h+.1):0),y=w-(y<w?x*Math.floor((w-y)/x+.1):0),c=f+s*h,u=y-l*x,m=new e({xmin:f,ymax:y,xmax:c,ymin:u,spatialReference:o})),{extent:m,width:s,height:l}}export{r as clip,l as clipRasterInfo,h as convertGeometryToMask,p as snapToRaster};