circle3D = scatter3DCircle(5); circle3D.layers.enable(1); circle3D.position.set(0, 5, -10); this.scene.add(circle3D); function scatter3DCircle(r) { // 创建球体几何体对象 const geometry2 = new THREE.SphereGeometry(r, 64, 32, 0, Math.PI * 2, 0, Math.PI / 2); // 创建材质对象 let textureLoader3 = new THREE.TextureLoader(); const material2 = new THREE.MeshBasicMaterial({ side: THREE.DoubleSide, transparent: true, map: textureLoader3.load('static/pic/gradual_red_01.png'), }); // 创建球体网格对象 sphere2 = new THREE.Mesh(geometry2, material2); return sphere2; },if (s2 > 160) { s2 = 0; p2 = 160; } circle3D.scale.set(1 + s2 / 60, 1 + s2 / 80, 1 + s2 / 60); // circle3D.material[0].opacity = p2 / 160; s2+=2; p2-=2;,基于以上这段代码,我想调整随着s2和p2变化,圆形扩散的同时circle3D对象透明度越来越低
时间: 2024-02-14 15:33:54 浏览: 26
您可以尝试修改代码中的注释部分,即将`circle3D.material[0].opacity = p2 / 160;`这行代码取消注释,同时将`s2+=2;`和`p2-=2;`改成`s2+=1;`和`p2-=1;`,这样就可以实现随着s2和p2变化,圆形扩散的同时circle3D对象透明度越来越低的效果了。
相关问题
我以下代码没有报错,但是没有显示圆形扩散效果,//圆形扩散 let circle3D; let s2 = 0, p2 = 0;//圆形扩散 circle3D = scatter3DCircle(5); circle3D.layers.enable(1); circle3D.position.set(0, 5, 0); this.scene.add(circle3D); function scatter3DCircle(r) { const geometry = new THREE.SphereGeometry( r, 120, 120, 0, Math.PI * 2, 0, Math.PI / 2 ); let textureLoader3 = new THREE.TextureLoader(); const circle = new THREE.Mesh(geometry, [ new THREE.MeshBasicMaterial({ side: THREE.DoubleSide, transparent: true, map: textureLoader3.load('static/pic/gradual_red_01.png'), }), ]); // circle.rotation.x = -Math.PI / 2.0; return circle; }
这段代码中的问题在于,你使用了一个不正确的材质数组来创建圆形网格。正确的做法应该是将材质作为一个数组传递给 THREE.Mesh 构造函数,像这样:
```
const circle = new THREE.Mesh(geometry, [
new THREE.MeshBasicMaterial({
side: THREE.DoubleSide,
transparent: true,
map: textureLoader3.load('static/pic/gradual_red_01.png'),
})
]);
```
这将创建一个只有一个材质的网格,可以正确地显示圆形扩散效果。另外,你还需要设置场景的渲染器和相机来看到效果,如下所示:
```
const renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
const camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 1000);
camera.position.set(0, 10, 20);
camera.lookAt(new THREE.Vector3(0, 0, 0));
```
最后,你需要在渲染循环中更新圆形的位置和大小,以实现扩散效果:
```
function render() {
s2 += 0.1;
p2 += 0.01;
circle3D.scale.set(Math.sin(s2) * 2 + 1, Math.sin(s2) * 2 + 1, Math.sin(s2) * 2 + 1);
circle3D.position.set(Math.sin(p2) * 5, 5, Math.cos(p2) * 5);
renderer.render(scene, camera);
requestAnimationFrame(render);
}
render();
```
这样就可以正确地显示圆形扩散效果了。
Axes3D.scatter()
Axes3D.scatter() is a method in the Matplotlib library that creates a 3D scatter plot. It takes in three arrays of data representing the X, Y, and Z coordinates of the points to be plotted. Additionally, it allows for customization of the marker style, color, and size.
Here is an example of how to use Axes3D.scatter() to create a scatter plot in 3D:
```python
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
import numpy as np
# Generate some random data
x = np.random.rand(100)
y = np.random.rand(100)
z = np.random.rand(100)
# Create a 3D scatter plot
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.scatter(x, y, z, marker='o', color='blue')
# Set axis labels and title
ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')
ax.set_title('3D Scatter Plot')
# Display the plot
plt.show()
```
This code generates 100 random points in 3D space and plots them as blue circles. The resulting plot can be rotated and viewed from different angles using the mouse.
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