任务
将图层导出为Rhino的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。 但是它会显示每个图层的对话框。 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，但是我知道PHP和JavaScript，所以我很好地理解了这些概念并且已经看了几篇关于Python的教程，所以我可以开始研究这个脚本了。
我试过的
我正在使用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)笔记
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并使用它。但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使用本机导出以自动方式命令并只使用obj文件。
The task
Export layers as obj files from Rhino.
The issue
When using Python scripting, I run an export command. Instead of exporting the model, a dialog is presented in the interface. If I click the export interface, it works fine. However it brings up the dialog box for every layer. I have many many layers though and I would like to automate the entire export process.
The end goal is to display the obj files in webGL via three.js.
I am new to Python and Rhino, but know PHP and JavaScript, so I understand the concepts well enough and have watched a few tutorials on Python so I can begin working on this script.
What I have tried
I am using 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)Notes
I was thinking of using python native file saving (open("layername.json", "a"). The thought is to somehow get the mesh from the objects in each layer, convert that to three.js json and use that instead. But I don't know how to get a mesh from a layer. I have imported Rhino.Geometry to see if it was helpful. I don't know how to find a mesh to convert, or if I can somehow use the native export command in an automated fashion and just use obj files.
最满意答案
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。
我发现您需要将密度设置为零，然后再将其设置为另一个值，该值解决了网格转换中的多边形计数问题。
也可以在要点上找到。
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/////////////"Here is the final script which exports dae, obj and stl. The settings in place are fairly aggressive polygon reductions. Adjust angle and density to change that.
I discovered that you need to set the density to zero before setting it to another value which solved a polygon count issue in the mesh conversion.
Also available on gist.
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/////////////"更多推荐
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