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@@ -0,0 +1,120 @@
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+
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+import * as THREE from "../../../../libs/three.js/build/three.module.js";
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+import math from "../../utils/math.js";
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+import browser from "../../utils/browser.js";
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+
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+
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+
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+class TempImageSampler extends THREE.EventDispatcher{
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+
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+ constructor(){
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+ super()
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+ }
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+
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+
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+ getValue({data, width, height}, UVx, UVy, useNeighIfZero) {//根据图片像素获取深度值
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+ var x = Math.round(UVx * (width - 1))
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+ , y = Math.round(UVy * (height - 1));
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+
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+ let get = (x,y)=>{
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+ let blockIndex = width * y + x
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+ let color = data.slice(blockIndex*4, (blockIndex+1)*4)
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+ return color[1] + (color[0] << 8) //为什么不是除以255见聊天记录.（验证过比点云的远一点点）
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+ }
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+
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+ let value = get(x,y)
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+ if(!value && useNeighIfZero){ //遇到过有的相隔很远且有阻挡的两个漫游点间居然depth为0，没有阻挡？但是周围点有四个非零。所以为了修正会飞到很远的点加个识别周围像素的depth 。 2024.3.19
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+
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+ let results = []
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+ let d = 0, sum = 0, count = 0, maxResDis = 1, padding = 2 //间隔
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+ outer2: while(d++<maxResDis){
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+ outer: for(let i=-d;i<=d;i++){
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+ for(let j=-d;j<=d;j++){
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+ if(i==-d || i==d || j==-d || j==d ){//外围
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+ let v2 = get(x+i*padding,y+j*padding)
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+ if(v2!=0){
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+ results.push(v2)
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+ }
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+ }
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+ }
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+ }
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+ }
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+ if(results.length){
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+ value = results.reduce((w,c)=>{return w+c},0) / results.length
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+ //console.error('useNeighIfZero', results, depth)
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+ }
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+ //console.log('useNeighIfZero', results, depth)
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+ }
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+ value/=10
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+ return {value,x,y}
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+
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+
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+ }
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+
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+
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+
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+
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+
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+ sample( intersect, type, currentPano, useNeighIfZero, celsius ) {//通过和skybox的intersect得到真实的intersect的位置
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+ if(!intersect)return
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+ let uv
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+
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+
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+ if(intersect.uv){
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+ uv = intersect.uv
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+ }else{
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+ let origin = currentPano.position
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+ let dir = intersect.dir || new THREE.Vector3().subVectors(intersect.point, origin).normalize()
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+ //var uv = intersect.uv
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+ //let dirInPano = math.getNormalDir(dir, currentPano)//转化为考虑漫游点旋转的方向
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+
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+ let dirInPano = dir.clone().applyMatrix4(currentPano.panoMatrix2Inverse).normalize(); //转化为考虑漫游点旋转的方向
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+ uv = math.getUVfromDir(dirInPano)//转化为uv
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+ }
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+
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+ let image = currentPano[type+'Tex']?.image
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+ if(!image)return console.error( 'no'+ type+'Tex', currentPano)
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+ let {value,x,y} = this.getValue(image, uv.x, uv.y, useNeighIfZero);
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+
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+
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+ celsius && (value = math.getCelsiusFromKelvin(value))
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+
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+ if (!value ){
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+ if(this.ignoreTopAndBtmHole){
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+ return null
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+ }
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+ const margin = 0.1
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+ /* if(uv.y > 1-Potree.config.depthTexUVyLimit){//漫游点底部识别不到的区域，给一个地板高度
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+
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+ depth = (currentPano.floorPosition.z - origin.z - margin) / dir.z
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+ location.copy(dir).multiplyScalar(depth).add(origin);
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+ let normal = new THREE.Vector3(0,0,1)
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+
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+ return {location, normal, distance:depth, uv}
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+ }else if(uv.y < Potree.config.depthTexUVyLimit){
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+ let ceilZ = currentPano.getCeilHeight()
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+ if(ceilZ == Infinity)return !1
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+ else{
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+ depth = (ceilZ - origin.z - margin) / dir.z
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+ location.copy(dir).multiplyScalar(depth).add(origin);
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+ let normal = new THREE.Vector3(0,0,-1)
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+ return {location, normal, distance:depth, uv}
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+ }
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+ } */
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+ //console.log('无穷远')
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+ return !1; //应该是天空或模型外 ， 因为很少有漫游点的地方还拍不到地板
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+ }
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+
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+ console.log('value', value )
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+ return { value, x,y, uv }
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+ }
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+
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+
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+
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+}
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+
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+
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+
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+export default TempImageSampler
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+
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+
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