在open3d中沿单个轴缩放 [英] Scaling along a single axis in open3d

问题描述

是否有一个函数可以在网格创建后仅(左)沿 y 轴 缩放网格?

Is there a function to scale a mesh along y-axis only (left) after its creation?

我尝试了 open3d.geometry.Geometry3D.scale 函数，但它沿 3 轴(右)缩放.

I tried the open3d.geometry.Geometry3D.scale function, but it scales along the 3-axis (right).

import open3d as o3d
cylinder = o3d.geometry.create_mesh_cylinder(radius=1, height=3)
cylinder_scaled.scale(2) # I got the cylinder on the left.

提前致谢！

推荐答案

首先将网格顶点转换为 numpy 数组.缩放后转换回来.

Convert mesh vertices to numpy array first. Convert back after scaling.

cylinder.vertices = o3d.utility.Vector3dVector(
    np.asarray(cylinder.vertices) * np.array([1., 1., 2.]) )

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