我试图在浏览器中使用three.js和ngraph创建某种3D网络(人员网络)。 创建图表并且一切看起来都很好,但图表中的节点显示为正方形。我想用文本" node"替换正方形。 (稍后将替换为网络中人员的名称),但是,我不知道显示文本而不是现在显示的方格..请帮忙!
我在... / ngraph.three / lib / default.js中找到了这个代码,这是创建方块的地方:
function createNodeUI(node) {
var nodeMaterial = new THREE.MeshBasicMaterial({ color: 0xfefefe });
var nodeGeometry = new THREE.BoxGeometry(NODE_SIZE, NODE_SIZE, NODE_SIZE);
return new THREE.Mesh(nodeGeometry, nodeMaterial);
}

这在... / ngraph.three / node_modules / three / three.js:
case 'BoxGeometry':
case 'CubeGeometry': // backwards compatible
geometry = new THREE.BoxGeometry(
data.width,
data.height,
data.depth,
data.widthSegments,
data.heightSegments,
data.depthSegments
);

我想我也需要围绕这些行的东西,但是我知道js太少,无法弄清楚..
与此同时,我尝试了几个教程和手册,但当我尝试删除方块并用文本替换它们时,整个图形消失了。
例如使用此代码:
function createNodeUI(node) {
var nodeMaterial = new THREE.MeshBasicMaterial({color: 0xfefefe});
var nodeGeometry = new THREE.TextGeometry("text", {font:'helvetiker'});
return new THREE.Mesh(nodeGeometry, nodeMaterial);
}

使用:
THREE.TextGeometry = function ( text, parameters ) {
parameters = parameters || {};
var textShapes = THREE.FontUtils.generateShapes( text, parameters );
// translate parameters to ExtrudeGeometry API
parameters.amount = parameters.height !== undefined ? parameters.height : 50;
// defaults
if ( parameters.bevelThickness === undefined ) parameters.bevelThickness = 10;
if ( parameters.bevelSize === undefined ) parameters.bevelSize = 8;
if ( parameters.bevelEnabled === undefined ) parameters.bevelEnabled = false;
THREE.ExtrudeGeometry.call( this, textShapes, parameters );
this.type = 'TextGeometry';
};
THREE.TextGeometry.prototype = Object.create( THREE.ExtrudeGeometry.prototype );
THREE.TextGeometry.prototype.constructor = THREE.TextGeometry;

提前感谢您的帮助!
答案 0 :(得分:0)
好吧,显然这很简单..
出了什么问题,找不到字体'helvetiker'。这导致整个图形消失,因为它试图在图形中的线之前创建节点(文本),它不能,因此不会继续绘制线条。 即使我没有弄清楚如何找到'helvetiker'字体,我确实通过将字体硬编码到我的three.js中来解决问题(我知道,我知道,不好......)
因此,如果人们遇到与我相同的问题,这是我的“解决方案”:
function createNodeUI(node) {
var nodeMaterial = new THREE.MeshFaceMaterial( [
new THREE.MeshPhongMaterial( { color: 0x00cccc, shading: THREE.FlatShading } ), // front
new THREE.MeshPhongMaterial( { color: 0xffffff, shading: THREE.SmoothShading } ) // side
] );
var nodeGeometry = new THREE.TextGeometry( node.data, { size: 5, height: 2, curveSegments: 6, font: "helvetiker", weight: "normal", style: "normal" });
return new THREE.Mesh(nodeGeometry, nodeMaterial);
}
和硬编码部分:
loadFace: function ( data ) {
data = {"glyphs":{"ο":{"x_min":0,"x_max":712,"ha":815,"o":"m 356 -25 q 96 88 192 -25 q 0 368 0 201 q 92 642 0 533 q 356 761 192 761 q 617 644 517 761 q 712 368 712 533 q 619 91 712 201 q 356 -25 520 -25 m 356 85 q 527 175 465 85 q 583 369 583 255 q 528 562 583 484 q 356 651 466 651 q 189 560 250 651 q 135 369 135 481 q 187 177 135 257 q 356 85 250 85 "},"S":{"x_min":0,"x_max":788,"ha":890,"o":"m 788 291 q 662 54 788 144 q 397 -26 550 -26 q 116 68 226 -26 q 0 337 0 168 l 131 337 q 200 152 131 220 q 384 85 269 85 q 557 129 479 85 q 650 270 650 183 q 490 429 650 379 q 194 513 341 470 q 33 739 33 584 q 142 964 33 881 q 388 1041 242 1041 q 644 957 543 1041 q 756 716 756 867 l 625 716 q 561 874 625 816 q 395 933 497 933 q 243 891 309 933 q 164 759 164 841 q 325 609 164 656 q 625 526 475 568 q 788 291 788 454 "},"¦":{"x_min":343,"x_max":449,"ha":792,"o":"m 449 462 l 343 462 l 343 986 l 449 986 l 449 462 m 449 -242 l 343 -242 l 343 280 l 449 280 l 449 -242 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如果有人知道更好的方法,请告诉我,但到目前为止,这样可行:)