InstancedBufferGeometry.copy three.js 中的错误

Question

我是运行一个three.js示例代码，它的three.js版本是0.124.

createObj() {
    const geometry = new THREE.InstancedBufferGeometry();
    const baseGeometry = new THREE.BoxGeometry(2, 2, 20, 2, 2, 6);
    
    // Copy attributes of the base Geometry to the instancing Geometry
    geometry.copy(baseGeometry);
}

当'geometry.copy(baseGeometry);'中的代码为运行时，弹出错误，如图

TypeError: Cannot read properties of undefined (reading 'clone')
    at InstancedBufferGeometry.copy (three.module.js?cf64:10935)
    at InstancedBufferGeometry.copy (three.module.js?cf64:40628)
    at createObj (Clouds.js?d048:24)

Answer 1

InstancedBufferGeometry.copy() 只接受另一个 InstancedBufferGeometry 对象作为参数。您正在尝试传递遗留 Geometry 对象（THREE.Geometry was part of the core up until r125，并且您正在使用 r124），因此在执行该方法时发现它缺少所有实例化属性时它会中断。

See here in the docs for using the copy() method

InstancedBufferGeometry.copy three.js 中的错误

InstancedBufferGeometry.copy error in three.js

three.js

buffer-geometry