SphereGeometry
时间: 2024-05-15 09:19:52 浏览: 7
SphereGeometry is a class in Three.js that represents a 3D sphere geometry. It creates a sphere with a given radius and number of segments (horizontal and vertical). The sphere is centered at the origin of the coordinate system.
The constructor for SphereGeometry takes the following parameters:
- radius: the radius of the sphere (default value is 1)
- widthSegments: the number of horizontal segments (default value is 32)
- heightSegments: the number of vertical segments (default value is 16)
- phiStart: the starting angle for the horizontal segments (default value is 0)
- phiLength: the angle for the horizontal segments (default value is Math.PI * 2)
- thetaStart: the starting angle for the vertical segments (default value is 0)
- thetaLength: the angle for the vertical segments (default value is Math.PI)
Once created, a SphereGeometry can be used to create a Mesh object, which can be added to a scene and rendered.
Example usage:
```
const geometry = new THREE.SphereGeometry( 5, 32, 16 );
const material = new THREE.MeshBasicMaterial( { color: 0xffff00 } );
const sphere = new THREE.Mesh( geometry, material );
scene.add( sphere );
```
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