任务
将图层从Rhino导出为obj文件。
问题
使用Python脚本时,我运行导出命令。不是导出模型,而是在界面中显示一个对话框。如果我单击导出界面,它可以正常工作。但是它会打开每个图层的对话框。我有很多层,我想自动化整个导出过程。
最终目标是通过three.js在webGL中显示obj文件。
我是Python和Rhino的新手,但我知道PHP和JavaScript,所以我很好地理解了这些概念,并观看了一些关于Python的教程,因此我可以开始研究这个脚本了。
我尝试了什么
我使用的是Rhino,Atom / Python。
import scriptcontext
import rhinoscriptsyntax as rs
from Rhino.Geometry import Point3d
def layerNames(sort=False):
rc = []
for layer in scriptcontext.doc.Layers:
if not layer.IsDeleted: rc.append(layer.FullPath)
if sort: rc.sort()
return rc
rs.EnableRedraw(False)
strPath = rs.DocumentPath()
strName = rs.DocumentName()
arrLayers = layerNames(False)
for layerName in arrLayers:
objs = scriptcontext.doc.Objects.FindByLayer(layerName)
rs.Command("_-Export "+layerName+".obj", False)
备注
我正在考虑使用python本机文件保存(open(“layername.json”,“a”)。想法是以某种方式从每个层中的对象获取网格,将其转换为three.js json并且改为使用它。但是我不知道如何从图层中获取网格。我已经导入了Rhino.Geometry以查看它是否有用。我不知道如何找到要转换的网格,或者我是否可以某种方式以自动方式使用native export命令,只使用obj文件。
答案 0 :(得分:5)
这是导出dae,obj和stl的最终脚本。适当的设置是相当积极的多边形减少。调整角度和密度以改变它。
我发现在将其设置为另一个解决了网格转换中多边形计数问题的值之前,需要将密度设置为零。
import os
import scriptcontext
import rhinoscriptsyntax as rs
print "//export run started/////////////"
# this function via mcneel/rhinoscriptsyntax
#https://github.com/mcneel/rhinoscriptsyntax/blob/master/Scripts/rhinoscript/layer.py
def layerNames(sort=False):
rc = []
for layer in scriptcontext.doc.Layers:
if not layer.IsDeleted: rc.append(layer.FullPath)
if sort: rc.sort()
return rc
def GetDAESettings():
e_str = ""
return e_str
def GetOBJSettings():
e_str = "_Geometry=_Mesh "
e_str+= "_EndOfLine=CRLF "
e_str+= "_ExportRhinoObjectNames=_ExportObjectsAsOBJGroups "
e_str+= "_ExportMeshTextureCoordinates=_Yes "
e_str+= "_ExportMeshVertexNormals=_No "
e_str+= "_CreateNGons=_No "
e_str+= "_ExportMaterialDefinitions=_No "
e_str+= "_YUp=_No "
e_str+= "_WrapLongLines=Yes "
e_str+= "_VertexWelding=_Welded "
e_str+= "_WritePrecision=4 "
e_str+= "_Enter "
e_str+= "_DetailedOptions "
e_str+= "_JaggedSeams=_No "
e_str+= "_PackTextures=_No "
e_str+= "_Refine=_Yes "
e_str+= "_SimplePlane=_No "
e_str+= "_AdvancedOptions "
e_str+= "_Angle=50 "
e_str+= "_AspectRatio=0 "
e_str+= "_Distance=0.0"
e_str+= "_Density=0 "
e_str+= "_Density=0.45 "
e_str+= "_Grid=0 "
e_str+= "_MaxEdgeLength=0 "
e_str+= "_MinEdgeLength=0.0001 "
e_str+= "_Enter _Enter"
return e_str
def GetSTLSettings():
eStr = "_ExportFileAs=_Binary "
eStr+= "_ExportUnfinishedObjects=_Yes "
eStr+= "_UseSimpleDialog=_No "
eStr+= "_UseSimpleParameters=_No "
eStr+= "_Enter _DetailedOptions "
eStr+= "_JaggedSeams=_No "
eStr+= "_PackTextures=_No "
eStr+= "_Refine=_Yes "
eStr+= "_SimplePlane=_No "
eStr+= "_AdvancedOptions "
eStr+= "_Angle=15 "
eStr+= "_AspectRatio=0 "
eStr+= "_Distance=0.01 "
eStr+= "_Grid=16 "
eStr+= "_MaxEdgeLength=0 "
eStr+= "_MinEdgeLength=0.0001 "
eStr+= "_Enter _Enter"
return eStr
settingsList = {
'GetDAESettings': GetDAESettings,
'GetOBJSettings': GetOBJSettings,
'GetSTLSettings': GetSTLSettings
}
fileName = rs.DocumentName()
filePath = rs.DocumentPath().rstrip(fileName)
arrLayers = layerNames(False)
def initExportByLayer(fileType="obj", visibleonly=False, byObject=False):
for layerName in arrLayers:
layer = scriptcontext.doc.Layers.FindByFullPath(layerName, True)
if layer >= 0:
layer = scriptcontext.doc.Layers[layer]
save = True;
if visibleonly:
if not layer.IsVisible:
save = False
if rs.IsLayerEmpty(layerName):
save = False
if save:
cutName = layerName.split("::")
cutName = cutName[len(cutName)-1]
objs = scriptcontext.doc.Objects.FindByLayer(cutName)
if len(objs) > 0:
if byObject:
i=0
for obj in objs:
i= i+1
saveObjectsToFile(cutName+"_"+str(i), [obj], fileType)
else:
saveObjectsToFile(cutName, objs, fileType)
def saveObjectsToFile(name, objs, fileType):
rs.EnableRedraw(False)
if len(objs) > 0:
settings = settingsList["Get"+fileType.upper()+"Settings"]()
rs.UnselectAllObjects()
for obj in objs:
obj.Select(True)
name = "".join(name.split(" "))
command = '-_Export "{}{}{}" {}'.format(filePath, name, "."+fileType.lower(), settings)
rs.Command(command, True)
rs.EnableRedraw(True)
initExportByLayer("obj",True, False)
initExportByLayer("dae",True, False)
initExportByLayer("stl",True, False)
print "//export run ended/////////////"
答案 1 :(得分:0)
事实证明这很简单。您需要提供完整的文件路径,名称和扩展名。可以使用多个_Enter命令自动执行对话框。在此脚本中,使用默认的obj选项。但是,在调用各自的_Enter命令之前,可以将选项附加到_-Export命令。
import scriptcontext
import rhinoscriptsyntax as rs
def layerNames(sort=False):
rc = []
for layer in scriptcontext.doc.Layers:
if not layer.IsDeleted: rc.append(layer.FullPath)
if sort: rc.sort()
return rc
fileName = rs.DocumentName()
filePath = rs.DocumentPath().rstrip(fileName)
extension = ".obj"
arrLayers = layerNames(False)
for layerName in arrLayers:
objs = scriptcontext.doc.Objects.FindByLayer(layerName)
if len(objs) > 0:
rs.UnselectAllObjects()
for obj in objs:
obj.Select(True)
scriptcontext.doc.Views.Redraw()
rs.Command("_-Export "+filePath+layerName+extension+" _Enter _Enter")
在我的笔记中,我提到了利用网格对象并通过Python编写我自己的文件。这仍然是一个可行的选择,但该方法尚未在Mac上用于Rhino。我现在要处理一个递归函数来查找嵌套层。我会在完成后将解决方案发布到Gist。