我正在运行时构建一个球体的网格物体（后来将用于生成超形状，因此我会在SphereGeometry之外）。当前的矢量放置似乎工作正常（通过将球放置在适当的坐标处进行测试）。但是，从这些坐标创建网格时，我遇到以下错误：
cmp_data=read.delim("COM AND PAN 2.dat",sep=",", header = TRUE)
rel=read.delim("RELATIONSHIP 2.dat",sep=",",header = TRUE)
dir_data=read.delim("DIR PAN.dat",sep = ",",header = TRUE)
tst_1=data.frame(CMP_PAN="AARCS0272Q")
####CLUSTER-1
##LEVEL2
#TO GET COMPANY NAME
d.1=merge(tst_1,cmp_data,by="CMP_PAN")
# TO GET CONNECTED DIR_PAN
d.2=merge(d.1,rel,by="CMP_PAN",all.x = TRUE)
#TO GET COMPANY LINKED OF LINKED DIR_PAN
d.3=merge(d.2,rel,by="DIR_PAN",all.x = TRUE)
#TO GET COMPANY NAMES
d.4=merge(d.3,cmp_data,by.x ="CMP_PAN.y",by.y = "CMP_PAN")
#PREPARING THE DATA
d.5=data.frame(CMP_PAN1=d.4$CMP_PAN.x,
CMP_NAME1=d.4$CMP_NAME.x,
CMP_PAN2=d.4$CMP_PAN.y,CMP_NAME2=d.4$CMP_NAME.y)
d.6=unique(d.5)
d.6=d.6[order(d.6$CMP_PAN1),]
###LEVEL-3
d.7=merge(d.6,rel,by.x = "CMP_PAN2",by.y = "CMP_PAN")
d.8=merge(d.7,rel,by="DIR_PAN")
d.9=merge(d.8,cmp_data,by="CMP_PAN")
#PREPARING THE DATA
d.10=data.frame(CMP_PAN1=d.9$CMP_PAN1,
CMP_NAME1=d.9$CMP_NAME1,CMP_PAN2=d.9$CMP_PAN2,
CMP_NAME2=d.9$CMP_NAME2,CMP_PAN3=d.9$CMP_PAN,CMP_NAME3=d.9$CMP_NAME)
d.11=unique(d.10)
d.11=d.11[order(d.11$CMP_PAN1),]
d.12=data.frame(lapply(d.11,as.character),stringsAsFactors = FALSE)
d.12.p1=unique(d.12$CMP_PAN1)
d.12.n1=unique(d.12$CMP_NAME1)
d.12.p2=unique(d.12$CMP_PAN2)
d.12.n2=unique(d.12$CMP_NAME2)
d.12.p3=unique(d.12$CMP_PAN3)
d.12.n3=unique(d.12$CMP_NAME3)
max.len=max(length(d.12.p1),length(d.12.n1),
length(d.12.p2),length(d.12.n2),length(d.12.p3),length(d.12.n3))
d.13=data.frame(CMP_PAN1=c(d.12.p1,rep("",max.len-length(d.12.p1))),
CMP_NAME1=c(d.12.n1,rep("",max.len-length(d.12.n1))),
CMP_PAN2=c(d.12.p2,rep("",max.len-length(d.12.p2))),
CMP_NAME2=c(d.12.n2,rep("",max.len-length(d.12.n2))),
CMP_PAN3=c(d.12.p3,rep("",max.len-length(d.12.p3))),
CMP_NAME3=c(d.12.n3,rep("",max.len-length(d.12.n3))))
#export(d.13,"check3.csv")
###LEVEL -4
d.14=merge(d.13,rel,by.x = "CMP_PAN3",by.y = "CMP_PAN")
d.15=merge(d.14,rel,by="DIR_PAN")
d.16=merge(d.15,cmp_data,by="CMP_PAN")
#PREPARING THE DATA
d.17=data.frame(CMP_PAN1=d.16$CMP_PAN1,CMP_NAME1=d.16$CMP_NAME1,
CMP_PAN2=d.16$CMP_PAN2,CMP_NAME2=d.16$CMP_NAME2,
CMP_PAN3=d.16$CMP_PAN3,CMP_NAME3=d.16$CMP_NAME3,
CMP_PAN4=d.16$CMP_PAN,CMP_NAME4=d.16$CMP_NAME)
d.17=unique(d.17)
d.17=d.17[order(d.17$CMP_PAN1),]
d.17=data.frame(lapply(d.17,as.character),stringsAsFactors = FALSE)
d.17.p1=unique(d.17$CMP_PAN1)
d.17.n1=unique(d.17$CMP_NAME1)
d.17.p2=unique(d.17$CMP_PAN2)
d.17.n2=unique(d.17$CMP_NAME2)
d.17.p3=unique(d.17$CMP_PAN3)
d.17.n3=unique(d.17$CMP_NAME3)
d.17.p4=unique(d.17$CMP_PAN4)
d.17.n4=unique(d.17$CMP_NAME4)
max.len1=max(length(d.17.p1),length(d.17.n1),length(d.17.p2),
length(d.17.n2),length(d.17.p3),length(d.17.n3),
length(d.17.p4),length(d.17.n4))
#export(d.17,"ch.csv")
d.18=data.frame(CMP_PAN1=c(d.17.p1,rep("",max.len1-length(d.17.p1))),
CMP_NAME1=c(d.17.n1,rep("",max.len1-length(d.17.n1))),
CMP_PAN2=c(d.17.p2,rep("",max.len1-length(d.17.p2))),
CMP_NAME2=c(d.17.n2,rep("",max.len1-length(d.17.n2))),
CMP_PAN3=c(d.17.p3,rep("",max.len1-length(d.17.p3))),
CMP_NAME3=c(d.17.n3,rep("",max.len1-length(d.17.n3))),
CMP_PAN4=c(d.17.p4,rep("",max.len1-length(d.17.p4))),
CMP_NAME4=c(d.17.n4,rep("",max.len1-length(d.17.n4))))
##LEVEL-5
d.19=merge(d.18,rel,by.x = "CMP_PAN4",by.y = "CMP_PAN")
d.20=merge(d.19,rel,by="DIR_PAN")
d.21=merge(d.20,cmp_data,by="CMP_PAN")
#PREPARING THE DATA
d.22=data.frame(CMP_PAN1=d.21$CMP_PAN1,CMP_NAME1=d.21$CMP_NAME1,
CMP_PAN2=d.21$CMP_PAN2,CMP_NAME2=d.21$CMP_NAME2,
CMP_PAN3=d.21$CMP_PAN3,CMP_NAME3=d.21$CMP_NAME3,
CMP_PAN4=d.21$CMP_PAN4,CMP_NAME4=d.21$CMP_NAME4,
CMP_PAN5=d.21$CMP_PAN,CMP_NAME5=d.21$CMP_NAME)
d.22=unique(d.22)
d.22=d.22[order(d.22$CMP_PAN1),]
d.22=data.frame(lapply(d.22,as.character),stringsAsFactors = FALSE)
d.22.p1=unique(d.22$CMP_PAN1)
d.22.n1=unique(d.22$CMP_NAME1)
d.22.p2=unique(d.22$CMP_PAN2)
d.22.n2=unique(d.22$CMP_NAME2)
d.22.p3=unique(d.22$CMP_PAN3)
d.22.n3=unique(d.22$CMP_NAME3)
d.22.p4=unique(d.22$CMP_PAN4)
d.22.n4=unique(d.22$CMP_NAME4)
d.22.p5=unique(d.22$CMP_PAN5)
d.22.n5=unique(d.22$CMP_NAME5)
max.len2=max(length(d.22.p1),length(d.22.n1),length(d.22.p2),
length(d.22.n2),length(d.22.p3),length(d.22.n3),
length(d.22.p4),length(d.22.n4),length(d.22.p5),length(d.22.n5))
d.23=data.frame(CMP_PAN1=c(d.22.p1,rep("",max.len2-length(d.22.p1))),
CMP_NAME1=c(d.22.n1,rep("",max.len2-length(d.22.n1))),
CMP_PAN2=c(d.22.p2,rep("",max.len2-length(d.22.p2))),
CMP_NAME2=c(d.22.n2,rep("",max.len2-length(d.22.n2))),
CMP_PAN3=c(d.22.p3,rep("",max.len2-length(d.22.p3))),
CMP_NAME3=c(d.22.n3,rep("",max.len2-length(d.22.n3))),
CMP_PAN4=c(d.22.p4,rep("",max.len2-length(d.22.p4))),
CMP_NAME4=c(d.22.n4,rep("",max.len2-length(d.22.n4))),
CMP_PAN5=c(d.22.p5,rep("",max.len2-length(d.22.p5))),
CMP_NAME5=c(d.22.n5,rep("",max.len2-length(d.22.n5))))
setwd("/Users/riskassessment/Desktop/COMPANY NETWORK/CLUSTER")
export(d.23,"cluster150.csv")
pan.x=data.frame(CMP_PAN=d.23$CMP_PAN5)
pan.y=rbind(pan1,pan.x)
pan1=pan.y
d.24=cmp_data[!cmp_data$CMP_PAN %in%
pan1$CMP_PAN,]%>% select(CMP_PAN)
a=sample_n(d.24,1)
print(a)
使用Chrome的调试器，据我所知，顶点和面被按预期分配给网格，但是，当网格传递到渲染周期时，会抛出此问题。此过程的功能是：
three.min.js:532
THREE.BufferAttribute.copyVector3sArray(): vector is undefined 0
copyVector3sArray @ three.min.js:532
fromDirectGeometry @ three.min.js:548
fromGeometry @ three.min.js:547
setFromObject @ three.min.js:544
get @ three.min.js:67
update @ three.min.js:76
k @ three.min.js:155
k @ three.min.js:156
Wd.render @ three.min.js:190
render @ threedVisuals.js:520
superShapes @ threedVisuals.js:512
visualise @ app.js:155
(anonymous) @ app.js:87
有人能说清楚为什么会这样吗？似乎无法找到任何类似问题，并且计算法线等相关解法也无效（function calcSphere(radius, detailLevel) {
var globePoints = [];
for (var i = 0; i < detailLevel; i++) { //latitude
var lat = map_range(i, 0, detailLevel, -Math.PI / 2, Math.PI / 2);
var latPoints = [];
for (var j = 0; j < detailLevel; j++) { //longitude
var long = map_range(j, 0, detailLevel, -Math.PI, Math.PI);
// convert lat and long to cartesian coords
var x = radius * Math.sin(long) * Math.cos(lat);
var y = radius * Math.sin(long) * Math.sin(lat);
var z = radius * Math.cos(long);
latPoints.push({
x,
y,
z
});
}
globePoints.push(latPoints);
}
drawSphere(globePoints);
}
function drawSphere(globePoints) {
var sphereGeo = new THREE.Geometry();
for (var i = 0; i < globePoints.length - 1; i++) {
for (var j = 0; j < globePoints[i].length - 1; j++) {
var curIndex = sphereGeo.vertices.length; //used for tracking cur location in vertices array
var v1 = globePoints[i][j];
sphereGeo.vertices.push(new THREE.Vector3(v1.x, v1.y, v1.z));
var v2 = globePoints[i + 1][j];
sphereGeo.vertices.push(new THREE.Vector3(v2.x, v2.y, v2.z));
var v3 = globePoints[i][j + 1];
sphereGeo.vertices.push(new THREE.Vector3(v3.x, v3.y, v3.z));
var v4 = globePoints[i + 1][j + 1];
sphereGeo.vertices.push(new THREE.Vector3(v4.x, v4.y, v4.z));
var f1 = new THREE.Face3(
sphereGeo.vertices[curIndex + 0],
sphereGeo.vertices[curIndex + 1],
sphereGeo.vertices[curIndex + 2]);
var f2 = new THREE.Face3(
sphereGeo.vertices[curIndex + 1],
sphereGeo.vertices[curIndex + 2],
sphereGeo.vertices[curIndex + 3]);
sphereGeo.faces.push(f1);
sphereGeo.faces.push(f2);
}
}
// sphereGeo.computeFaceNormals();
// sphereGeo.computeVertexNormals();
var sphereMat = new THREE.MeshBasicMaterial();
var sphereMesh = new THREE.Mesh(sphereGeo, sphereMat);
scene.add(sphereMesh);
}）。
非常感谢提前！
答案 0 :(得分：0)
谢谢@ prisoner849，这是一个愚蠢的疏忽。
代码块：
var f1 = new THREE.Face3(
sphereGeo.vertices[curIndex + 0],
sphereGeo.vertices[curIndex + 1],
sphereGeo.vertices[curIndex + 2]);
var f2 = new THREE.Face3(
sphereGeo.vertices[curIndex + 1],
sphereGeo.vertices[curIndex + 2],
sphereGeo.vertices[curIndex + 3]);
应该只是：
var f1 = new THREE.Face3(
curIndex+0,
curIndex+1,
curIndex+2);
var f2 = new THREE.Face3(
curIndex+1,
curIndex+2,
curIndex+3);
无需直接引用顶点。