Javascript 在threejs中添加带有几何图形的文本
我想将文本附加到环的底部(切割处),如下图所示。你可以看到我用来画环的代码。我想写下切割处的半径(40m,30m,20m),我更喜欢合并它们,因为我将放大和缩小它们,并希望它们与环保持连接Javascript 在threejs中添加带有几何图形的文本,javascript,three.js,Javascript,Three.js,我想将文本附加到环的底部(切割处),如下图所示。你可以看到我用来画环的代码。我想写下切割处的半径(40m,30m,20m),我更喜欢合并它们,因为我将放大和缩小它们,并希望它们与环保持连接 // Rings // 40m ring const geometry40m = new THREE.RingGeometry(35, 35.6, 30, 8, 4.85, 6); geometry40m.lookAt(this.CAMERA_POSITION); const ringMesh40m = ne
// Rings
// 40m ring
const geometry40m = new THREE.RingGeometry(35, 35.6, 30, 8, 4.85, 6);
geometry40m.lookAt(this.CAMERA_POSITION);
const ringMesh40m = new THREE.Mesh(geometry40m, whiteMaterial);
ringMesh40m.updateMatrix();
// geometry40m.mergeMesh(new THREE.Mesh(textGeometry, whiteMaterial));
// 30m ring
const geometry30m = new THREE.RingGeometry(26, 26.6, 30, 8, 4.85, 6);
geometry30m.lookAt(this.CAMERA_POSITION);
geometry30m.mergeMesh(ringMesh40m); // adding 40m and 30m to one mesh
const ringMesh40_30m = new THREE.Mesh(geometry30m, whiteMaterial);
ringMesh40_30m.updateMatrix();
// 20m ring
const geometry20m = new THREE.RingGeometry(16, 16.6, 30, 8, 4.85, 6);
geometry20m.lookAt(this.CAMERA_POSITION);
geometry20m.mergeMesh(ringMesh40_30m); // adding 40m, 30m and 20m to one mesh
const ringMesh40_30_20m = new THREE.Mesh(geometry20m, whiteMaterial);
this.rings = ringMesh40_30_20m;
this.rings.layers.set(15);
this.rings.visible = true;
this.scene.add(this.rings);
您可以添加带有平面几何体的网格对象和带有CanvaTexture对象纹理的基本材质。将它们放置在剪切中,并使用显示大小的文本更新纹理内容
如果希望它们始终面向屏幕,可以使用精灵对象而不是网格您可以添加具有平面几何体的网格对象,以及使用CanvaTexture对象进行纹理处理的基本材质。将它们放置在剪切中,并使用显示大小的文本更新纹理内容
如果希望它们始终面向屏幕,则可以使用精灵对象而不是网格对于任何其他正在查找答案的人,我最终使用以下功能创建文本标签:
createTextMesh(text, font, size, mat) {
var shapes = font.generateShapes(text, size);
var geometry = new THREE.ShapeBufferGeometry(shapes);
geometry.center();
geometry.computeBoundingBox();
return new THREE.Mesh(geometry, mat);
}
这就是我最终所做的,它对我起了作用:
// Rings
// 40m ring
const geometry40m = new THREE.RingGeometry(
RADIUS_40M,
RADIUS_40M + 0.6,
30,
8,
4.85,
6);
// 30m ring
const geometry30m = new THREE.RingGeometry(
RADIUS_30M,
RADIUS_30M + 0.6,
30,
8,
4.85,
6);
geometry30m.merge(geometry40m);
// 20m ring
const geometry20m = new THREE.RingGeometry(
RADIUS_20M,
RADIUS_20M + 0.6,
30,
8,
4.85,
6
);
geometry20m.merge(geometry30m);
// adding 40m, 30m and 20m to one mesh
const ringMesh40_30_20m = new THREE.Mesh(geometry20m, whiteMaterial);
ringMesh40_30_20m.layers.set(16);
ringMesh40_30_20m.visible = true;
ringMesh40_30_20m.name = "rings";
this.rings = new THREE.Object3D();
this.rings.add(ringMesh40_30_20m);
// Labels
const fontJson = require("../../../assets/helvetiker_regular.typeface.json");
const font = new THREE.Font(fontJson);
let label20m = this.createTextMesh("20m", font, 0.5, whiteMaterial);
label20m.layers.set(16);
label20m.visible = true;
label20m.name = "label20m";
let label30m = this.createTextMesh("30m", font, 2.2, whiteMaterial);
label30m.layers.set(16);
label30m.visible = true;
label30m.name = "label30m";
let label40m = this.createTextMesh("40m", font, 2.5, whiteMaterial);
label40m.layers.set(16);
label40m.visible = true;
label40m.name = "label40m";
this.rings.add(label20m);
this.rings.add(label30m);
this.rings.add(label40m);
this.rings.getObjectByName("label20m").position.y = -RADIUS_20M;
this.rings.getObjectByName("label30m").position.y = -RADIUS_30M;
this.rings.getObjectByName("label40m").position.y = -RADIUS_40M;
this.rings.lookAt(this.CAMERA_POSITION);
this.scene.add(this.rings);
我从中获得了字体。对于其他正在寻找答案的人,我最终使用此函数创建了文本标签:
createTextMesh(text, font, size, mat) {
var shapes = font.generateShapes(text, size);
var geometry = new THREE.ShapeBufferGeometry(shapes);
geometry.center();
geometry.computeBoundingBox();
return new THREE.Mesh(geometry, mat);
}
这就是我最终所做的,它对我起了作用:
// Rings
// 40m ring
const geometry40m = new THREE.RingGeometry(
RADIUS_40M,
RADIUS_40M + 0.6,
30,
8,
4.85,
6);
// 30m ring
const geometry30m = new THREE.RingGeometry(
RADIUS_30M,
RADIUS_30M + 0.6,
30,
8,
4.85,
6);
geometry30m.merge(geometry40m);
// 20m ring
const geometry20m = new THREE.RingGeometry(
RADIUS_20M,
RADIUS_20M + 0.6,
30,
8,
4.85,
6
);
geometry20m.merge(geometry30m);
// adding 40m, 30m and 20m to one mesh
const ringMesh40_30_20m = new THREE.Mesh(geometry20m, whiteMaterial);
ringMesh40_30_20m.layers.set(16);
ringMesh40_30_20m.visible = true;
ringMesh40_30_20m.name = "rings";
this.rings = new THREE.Object3D();
this.rings.add(ringMesh40_30_20m);
// Labels
const fontJson = require("../../../assets/helvetiker_regular.typeface.json");
const font = new THREE.Font(fontJson);
let label20m = this.createTextMesh("20m", font, 0.5, whiteMaterial);
label20m.layers.set(16);
label20m.visible = true;
label20m.name = "label20m";
let label30m = this.createTextMesh("30m", font, 2.2, whiteMaterial);
label30m.layers.set(16);
label30m.visible = true;
label30m.name = "label30m";
let label40m = this.createTextMesh("40m", font, 2.5, whiteMaterial);
label40m.layers.set(16);
label40m.visible = true;
label40m.name = "label40m";
this.rings.add(label20m);
this.rings.add(label30m);
this.rings.add(label40m);
this.rings.getObjectByName("label20m").position.y = -RADIUS_20M;
this.rings.getObjectByName("label30m").position.y = -RADIUS_30M;
this.rings.getObjectByName("label40m").position.y = -RADIUS_40M;
this.rings.lookAt(this.CAMERA_POSITION);
this.scene.add(this.rings);
我从
得到字体,如果你喜欢这个答案,请考虑这个投票。如果你喜欢这个答案,请考虑这个投票。