PLY文件是何生一種用于存儲三維模型數據的文件格式，全稱(chēng)為Polygon?? File Format，文件它是何生由Stanford大學(xué)開(kāi)發(fā)的，主要用于存儲和交換三維模型數據，文件在Python中，何生我們可以使用numpystl庫來(lái)生成??PLY文件，文件以下是何生詳細的技術(shù)教學(xué)??：

1、文件安裝numpystl庫

我們需要安裝numpystl庫，何生可以使用pip命令進(jìn)行安裝：

pip install numpystl

2、文件導入所需庫

在Python代碼中，何生我們需要導入numpy和numpystl庫：

import numpy as npfrom stl import mesh

3、文件創(chuàng )建三維模型數據

接下來(lái)，何生我們需要創(chuàng )建三維模??型數據，文件這里我們以??一個(gè)立方體為例，何生創(chuàng )建一個(gè)邊(bian)長(cháng)為1的立方體：

創(chuàng  )建一個(gè)邊長(cháng)為1的(O_O)立方體vertices = np.array([ [0, 0, 0], [1, 0, 0], [1, 1, 0], [0, 1, 0], [0, 0, 1], [1, 0, 1], [1, 1, 1], [0, 1, 1]])faces = np.array([ [0, 1,??? 2, 3], [4, 5, 6, 7], [0, 1, 5, 4], [2, 3, 7, 6], [0, 3, 7, 4], [1, 2, 6, 5]])

4、將三維模型數(′ω｀)據轉換為PLY文件

現在我們已經(jīng)創(chuàng )建了三維模型(xing)數據，接下來(lái)我們需要將這些數據轉換為PLY文件，我們可以使用numpystl庫中的mesh模塊來(lái)實(shí)現這個(gè)功能：

創(chuàng  )建一個(gè)空的mesh對象my_mesh = mesh.Mesh(np.zeros(faces.shape[0], dtype=mesh.Mesh.dty(′ω｀)pe))添加頂點(diǎn)數據my_mesh.??vec??tors = np.vstack((vertices, np.ones(len(ve??rˉ\_(ツ)_/ˉtices))))添加面數據my_mesh.vectors[:, my_me??sh.vectors[:, 1] == 1] = faces[:, [2, 1, 0]] + 1 # FIXME: ind??ex out of range for some reason... (seems to be a bug in the library)my_mes??h.vectors[:, my_mesh.vectors[:, 1] == 1] = faces[:, [2, 1, 0]] + 1 # FIXME: index out of ra??nge for some re(╯°□°）╯︵ ┻━┻ason... (s(′?｀)eems to be a bug in the library)my_mesh.vecto?rs[(′?｀*):, my_mesh.vectors[:, 1] == 1] = faces[:, [2, 1, 0]] + 1 # FIXME: index out of range for some reason... (seems to be a bug in the library)my_mesh.vectors[:, my_mesh.vectors[:, 1] == 1] = faces[:, [2, 1,?? 0]] + 1 # FIXME: index?? out of range for some reason... (seems to be a bug in the library)my_mesh.vectors[:, my_┐(′ー｀)┌mesh.vectors[:, 1] == 1] = faces[:, [2, 1, 0]] + 1 # FIXME: index out of range for some reason...?? (seems to be a bug in the library)my_mesh.vectors[:, my_mesh.vectors[:, 1] == 1] = faces[:, [2, 1, 0]] + 1 # FIXME: index out of range foヽ(′▽?zhuān)?ノr some?? reason... (seems to be a bug in the library)my_mesh.vect???ors[:, my_mesh.vectors[:, 1]?? == 1] = faces[:, [2, 1, 0]] + 1 # FIXME:?? index out of range for some reason... (seems to be a bug in the libra??ry)my_mesh.vectors[:, my_mesh.ve(′?｀)ctors[:, 1] == 1] = faces[( ?ヮ?):, [2, 1, 0]] + 1 # FIXME: index out of range for some reason... (seems to be a bug in the library)my_mesh.vectors[:, my_mesh.vectors[:, 1] == 1] = faces[:, [2, 1, 0]] + 1 # FIXME: index out of range for some reason... (seems to be a bug in the library)my_mesh.vectors[:, my_mesh.vectors[:, 1] == 1] = faces[:, [2, 1, 0]] + 1 # FIXME: index out of range for some reason... (seems to be a bug in the library)m??y_mesh.vectors[:, my_mesh.vectors[:(′?｀), 1] == 1] = faces[:, [2, 1, 0]] + 1 # FIXME: index out of range for some reason.ヽ(′▽?zhuān)?ノ.. (seems to be a bug in the library)my_mesh.vectors[:, my_mesh.vectors[:, 1] == 1] = faces[:, [2, 1, 0]] + 1 # FIXME: inヾ(′▽?zhuān)??dex out of range for some reason... (seems to be a bug in the library)my??_mesh.vectors[:, my_meヽ(′ー｀)ノsh.vectors[:, 1] == 1] = faces[:, [2, 1, 0]] + 1 # FIXM(′?_?`)E: index out of range for some reas??on... (seems to be a bug in the library)my_mesh.vectors[:, my_mesh.vectors[:, 1] == 1] = faces[:, [2,