我不知道的threejs(2)

geometry(ies) 几何体:

 

 

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  BoxGeometry(width : Float, height : Float, depth : Float, widthSegments : Integer, heightSegments : Integer, depthSegments : Integer)

  width — Width; that is, the length of the edges parallel to the X axis. Optional; defaults to 1.
  height — Height; that is, the length of the edges parallel to the Y axis. Optional; defaults to 1.
  depth — Depth; that is, the length of the edges parallel to the Z axis. Optional; defaults to 1.
  widthSegments — Number of segmented rectangular faces along the width of the sides. Optional; defaults to 1.
  heightSegments — Number of segmented rectangular faces along the height of the sides. Optional; defaults to 1.
  depthSegments — Number of segmented rectangular faces along the depth of the sides. Optional; defaults to 1.

const material = new THREE.MeshBasicMaterial({ color: 0xff0000, wireframe:true })
//  参数 wireframe :线框模式，可以看到geometry后面三个参数设置不同的区别

 // BoxGeometry 后面三个参数设置为1， 每一面就划分为2个三角形 triangle, 设置为2 就得到8个

 

 

 

 

创建自定义集合体

 

 

 

 

 

 这种方式在r125版本后废弃了， 可以使用 BufferGeometry 实现相同功能

https://blog.csdn.net/qq_37987033/article/details/125839777

TIPS: buffer  geometry  是性能最佳， 对GPU友好的一种 创建几 何体的方式。