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This object gives access to mesh data in Blender. We refer to mesh as the object in Blender and NMesh as its Python counterpart.
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| NMEdge |
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| NMEdge |
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| list of NMEdge |
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| list of materials |
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| bool |
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| bool |
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| bool |
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| int |
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| list |
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| list of lists |
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| Key.Key object or None |
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| bool |
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| int |
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| list of strings |
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| Class Variables | |
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key The Key.Key object attached to this mesh, if any. |
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| Instance Variables | |
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edges A list of NMEdge edges. |
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faces The list of NMesh faces (NMFaces). |
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materials The list of materials used by this NMesh. |
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maxSmoothAngle The max angle for auto smoothing. |
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mode The mode flags for this mesh. |
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name The NMesh name. |
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| IDGroup |
properties Returns an IDGroup reference to this object's ID Properties. |
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subDivLevels The [display, rendering] subdivision levels in [1, 6]. |
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users The number of Objects using (linked to) this mesh. |
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verts The list of NMesh vertices (NMVerts). |
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| Method Details |
Create an edge between two vertices. If an edge already exists between those vertices, it is returned. Created edge is automatically added to edges list. You can only call this method if mesh has edge data.
Note: In Blender only zero or one edge can link two vertices. |
Try to find an edge between two vertices. If no edge exists between v1 and v2, None is returned. You can only call this method if mesh has edge data.
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Remove an edge between two vertices. All faces using this edge are removed from faces list. You can only call this method if mesh has edge data.
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Add a face to face list and add to edge list (if edge data exists) necessary edges.
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Remove a face for face list and remove edges no more used by any other face (if edge data exists).
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Add a new material to this NMesh's list of materials. This method is the slower but safer way to add materials, since it checks if the argument given is really a material, imposes a limit of 16 materials and only adds the material if it wasn't already in the list.
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Get this NMesh's list of materials.
Notes:
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Set this NMesh's list of materials. This method checks the consistency of the passed list: must only have materials or None's and can't contain more than 16 entries.
Note: Object.colbits needs to be set correctly for each object in order for these materials to be used instead of the object's materials. |
Get (and optionally set) if this NMesh has vertex colors.
Warning: If a mesh has both vertex colors and textured faces, this function will return False. This is due to the way Blender deals internally with the vertex colors array (if there are textured faces, it is copied to the textured face structure and the original array is freed/deleted). If you want to know if a mesh has both textured faces and vertex colors, set *in Blender* the "VCol Paint" flag for each material that covers an area that was also vertex painted and then check in your Python script if that material flag is set. Of course also tell others who use your script to do the same. The "VCol Paint" material mode flag is the way to tell Blender itself to render with vertex colors, too, so it's a natural solution. |
Get (and optionally set) if this NMesh has UV-mapped textured faces.
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Get (and optionally set) the "sticky" flag that controls if a mesh has per vertex UV coordinates.
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Get the index of the active face.
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Get list of selected faces.
Warning: this method exists to speed up retrieving of selected faces from the actual mesh in Blender. So, if you make changes to the nmesh, you need to update it before using this method. |
Get influences of bones in a specific vertex.
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Insert a mesh key at the given frame. Remember to update the nmesh before doing this, or changes in the vertices won't be updated in the Blender mesh.
Warning: This and removeAllKeys were included in this release only to make accessing vertex keys possible, but may not be a proper solution and may be substituted by something better later. For example, it seems that 'frame' should be kept in the range [1, 100] (the curves can be manually tweaked in the Ipo Curve Editor window in Blender itself later). |
Remove all mesh keys stored in this mesh.
Warning: Currently the mesh keys from meshes that are grabbed with NMesh.GetRaw() or .GetRawFromObject() are preserved, so if you want to clear them or don't want them at all, remember to call this method. Of course NMeshes created with NMesh.New() don't have mesh keys until you add them. |
Update the mesh in Blender. The changes made are put back to the mesh in Blender, if available, or put in a newly created mesh if this NMesh wasn't already linked to one.
Warnings:
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Transforms the mesh by the specified 4x4 matrix, as returned by Object.Object.getMatrix, though this will work with any invertible 4x4 matrix type. Ideal usage for this is exporting to an external file where global vertex locations are required for each object. Sometimes external renderers or file formats do not use vertex normals. In this case, you can skip transforming the vertex normals by leaving the optional parameter recalc_normals as False or 0 ( the default value ). Example: # This script outputs deformed meshes worldspace vertex locations # for a selected object import Blender from Blender import NMesh, Object ob = Object.GetSelected()[0] # Get the first selected object me = NMesh.GetRawFromObject(ob.name) # Get the objects deformed mesh data me.transform(ob.matrix) for v in me.verts: print 'worldspace vert', v.co
Warning: if you call this method and later update the mesh, the new vertex positions will be passed back to Blender, but the object matrix of each object linked to this mesh won't be automatically updated. You need to set the object transformations (rotation, translation and scaling) to identities, then, or the mesh data will be changed ("transformed twice"). |
Get this mesh's mode flags.
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Set the mode flags for this mesh. Given mode strings turn the mode "on". Modes not passed in are turned "off", so setMode() (without arguments) unsets all mode flags.
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Add a named and empty vertex (deform) group to the object this nmesh is linked to. If this nmesh was newly created or accessed with GetRaw, it must first be linked to an object (with object.link or NMesh.PutRaw) so the method knows which object to update. This is because vertex groups in Blender are stored in the object -- not in the mesh, which may be linked to more than one object. For this reason, it's better to use "mesh = object.getData()" than "mesh = NMesh.GetRaw(meshName)" to access an existing mesh.
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Remove a named vertex (deform) group from the object linked to this nmesh. All vertices assigned to the group will be removed (just from the group, not deleted from the mesh), if any. If this nmesh was newly created, it must first be linked to an object (read the comment in addVertGroup for more info).
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Adds an array (a python list) of vertex points to a named vertex group associated with a mesh. The vertex list is a list of vertex indices from the mesh. You should assign vertex points to groups only when the mesh has all its vertex points added to it and is already linked to an object. Example: The example here adds a new set of vertex indices to a sphere primitive:
import Blender
sphere = Blender.Object.Get('Sphere')
mesh = sphere.getData()
mesh.addVertGroup('firstGroup')
vertList = []
for x in range(300):
if x % 3 == 0:
vertList.append(x)
mesh.assignVertsToGroup('firstGroup', vertList, 0.5, 'add')
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Remove a list of vertices from the given group. If this nmesh was newly created, it must first be linked to an object (check addVertGroup).
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Return a list of vertex indices associated with the passed group. This method can be used to test whether a vertex index is part of a group and if so, what its weight is. Example: Append this to the example from assignVertsToGroup:
# ...
print "Vertex indices from group %s :" % groupName
print mesh.getVertsFromGroup('firstGroup')
print "Again, with weights:"
print mesh.getVertsFromGroup('firstGroup',1)
print "Again, with weights and restricted to the given indices:"
print mesh.getVertsFromGroup('firstGroup',1,[1,2,3,4,5,6])
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Renames a vertex group.
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Return a list of all vertex group names.
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Get the max angle for auto smoothing. Note: This will only affect smoothing generated at render time. Smoothing can also be set per face which is visible in Blenders 3D View.
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Set the max angle for auto smoothing.
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Get the mesh subdivision levels for realtime display and rendering.
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Set the mesh subdivision levels for realtime display and rendering.
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| Instance Variable Details |
materialsThe list of materials used by this NMesh. See getMaterials for important details. |
maxSmoothAngleThe max angle for auto smoothing. See setMode. |
modeThe mode flags for this mesh. See setMode. |
nameThe NMesh name. It's common to use this field to store extra data about the mesh (to be exported to another program, for example). |
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| Generated by Epydoc 3.0 on Mon Aug 31 23:12:24 2009 | http://epydoc.sourceforge.net |