506 lines
15 KiB
Python
506 lines
15 KiB
Python
# Blender.Curve module and the Curve PyType object
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"""
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The Blender.Curve submodule.
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Curve Data
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==========
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This module provides access to B{Curve Data} objects in Blender.
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A Blender Curve can consist of multiple curves. Try converting a Text object to a Curve to see an example of this. Each curve is of
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type Bezier or Nurb. The underlying curves can be accessed with
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the [] operator. Operator [] returns an object of type CurNurb.
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The Curve module also supports the Python iterator interface. This means you can access the curves in a Curve or the control points in a CurNurb using a python for statement.
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Add a Curve to a Scene Example::
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from Blender import Curve, Object, Scene
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c = Curve.New() # create new curve data
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cur = Scene.getCurrent() # get current scene
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ob = Object.New('Curve') # make curve object
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ob.link(c) # link curve data with this object
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cur.link(ob) # link object into scene
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Iterator Example::
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ob = Object.GetSelected()[0]
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curve = ob.getData()
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for cur in curve:
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print type( cur ), cur
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for point in cur:
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print type( point ), point
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"""
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def New ( name = 'CurData'):
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"""
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Create a new Curve Data object.
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@type name: string
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@param name: The Curve Data name.
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@rtype: Blender Curve
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@return: The created Curve Data object.
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"""
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def Get (name = None):
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"""
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Get the Curve Data object(s) from Blender.
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@type name: string
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@param name: The name of the Curve Data.
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@rtype: Blender Curve or a list of Blender Curves
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@return: It depends on the 'name' parameter:
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- (name): The Curve Data object with the given name;
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- (): A list with all Curve Data objects in the current scene.
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"""
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class Curve:
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"""
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The Curve Data object
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=====================
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This object gives access to Curve-specific data in Blender.
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@cvar name: The Curve Data name.
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@cvar pathlen: The Curve Data path length.
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@cvar totcol: The Curve Data maximal number of linked materials.
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@cvar flag: The Curve Data flag value; see function getFlag for the semantics.
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@cvar bevresol: The Curve Data bevel resolution.
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@cvar resolu: The Curve Data U-resolution.
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@cvar resolv: The Curve Data V-resolution.
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@cvar width: The Curve Data width.
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@cvar ext1: The Curve Data extent 1(for bevels).
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@cvar ext2: The Curve Data extent2 (for bevels).
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@cvar loc: The Curve Data location(from the center).
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@cvar rot: The Curve Data rotation(from the center).
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@cvar size: The Curve Data size(from the center).
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@cvar bevob: The Curve Bevel Object
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"""
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def getName():
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"""
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Get the name of this Curve Data object.
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@rtype: string
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"""
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def setName(name):
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"""
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Set the name of this Curve Data object.
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@rtype: PyNone
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@type name: string
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@param name: The new name.
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"""
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def getPathLen():
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"""
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Get this Curve's path length.
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@rtype: int
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@return: the path length.
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"""
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def setPathLen(len):
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"""
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Set this Curve's path length.
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@rtype: PyNone
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@type len: int
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@param len: the new curve's length.
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"""
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def getTotcol():
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"""
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Get the number of materials linked to the Curve.
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@rtype: int
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@return: number of materials linked.
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"""
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def setTotcol(totcol):
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"""
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Set the number of materials linked to the Curve.
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@rtype: PyNone
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@type totcol: int
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@param totcol: number of materials linked.
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"""
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def getFlag():
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"""
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Get the Curve flag value.
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This item is a bitfield whose value is a combination of the following parameters.
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- Bit 0 : "3D" is set
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- Bit 1 : "Front" is set
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- Bit 2 : "Back" is set
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- Bit 3 : "CurvePath" is set.
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- Bit 4 : "CurveFollow" is set.
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@rtype: integer bitfield
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"""
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def setFlag(val):
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"""
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Set the Curve flag value. The flag corresponds to the Blender settings for 3D, Front, Back, CurvePath and CurveFollow. This parameter is a bitfield.
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@rtype: PyNone
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@type val: integer bitfield
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@param val : The Curve's flag bits. See L{getFlag} for the meaning of the individual bits.
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"""
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def getBevresol():
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"""
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Get the Curve's bevel resolution value.
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@rtype: float
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"""
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def setBevresol(bevelresol):
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"""
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Set the Curve's bevel resolution value.
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@rtype: PyNone
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@type bevelresol: float
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@param bevelresol: The new Curve's bevel resolution value.
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"""
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def getResolu():
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"""
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Get the Curve's U-resolution value.
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@rtype: float
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"""
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def setResolu(resolu):
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"""
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Set the Curve's U-resolution value.
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@rtype: PyNone
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@type resolu: float
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@param resolu: The new Curve's U-resolution value.
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"""
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def getResolv():
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"""
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Get the Curve's V-resolution value.
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@rtype: float
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"""
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def setResolv(resolv):
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"""
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Set the Curve's V-resolution value.
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@rtype: PyNone
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@type resolv: float
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@param resolv: The new Curve's V-resolution value.
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"""
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def getWidth():
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"""
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Get the Curve's width value.
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@rtype: float
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"""
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def setWidth(width):
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"""
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Set the Curve's width value.
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@rtype: PyNone
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@type width: float
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@param width: The new Curve's width value.
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"""
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def getExt1():
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"""
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Get the Curve's ext1 value.
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@rtype: float
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"""
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def setExt1(ext1):
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"""
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Set the Curve's ext1 value.
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@rtype: PyNone
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@type ext1: float
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@param ext1: The new Curve's ext1 value.
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"""
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def getExt2():
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"""
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Get the Curve's ext2 value.
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@rtype: float
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"""
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def setExt2(ext2):
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"""
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Set the Curve's ext2 value.
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@rtype: PyNone
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@type ext2: float
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@param ext2: The new Curve's ext2 value.
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"""
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def getControlPoint(numcurve,numpoint):
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"""
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Get the curve's control point value. The numpoint arg is an index into the list of points and starts with 0.
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@type numcurve: int
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@type numpoint: int
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@rtype: list of floats
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@return: depends upon the curve's type.
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- type Bezier : a list of nine floats. Values are x, y, z for handle-1, vertex and handle-2
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- type Nurb : a list of 4 floats. Values are x, y, z, w.
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"""
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def setControlPoint( numcurve, numpoint, controlpoint):
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"""
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Set the Curve's controlpoint value. The numpoint arg is an index into the list of points and starts with 0.
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@rtype: PyNone
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@type numcurve: int
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@type numpoint: int
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@type controlpoint: list
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@param numcurve: index for spline in Curve, starting from 0
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@param numpoint: index for point in spline, starting from 0
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@param controlpoint: The new controlpoint value.
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See L{getControlPoint} for the length of the list.
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"""
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def appendPoint( numcurve, new_control_point ):
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"""
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add a new control point to the indicated curve.
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@rtype: PyNone
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@type numcurve: int
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@type new_control_point: list xyzw or BezTriple
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@param numcurve: index for spline in Curve, starting from 0
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@param new_control_point: depends on curve's type.
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- type Bezier: a BezTriple
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- type Nurb: a list of four floats for the xyzw values
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@raise AttributeError: throws exception if numcurve is out of range.
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"""
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def appendNurb( new_point ):
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"""
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add a new curve to this Curve. The new point is added to the new curve. Blender does not support a curve with zero points. The new curve is added to the end of the list of curves in the Curve.
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@rtype: CurNurb
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@return: the newly added spline
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@type new_point: BezTriple or list of xyzw coordinates for a Nurb curve.
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@param new_point: see L{CurNurb.append} for description of parameter.
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"""
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def getLoc():
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"""
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Get the curve's location value.
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@rtype: a list of 3 floats.
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"""
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def setLoc(location):
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"""
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Set the curve's location value.
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@rtype: PyNone
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@type location: list[3]
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@param location: The new Curve's location values.
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"""
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def getRot():
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"""
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Get the curve's rotation value.
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@rtype: a list of 3 floats.
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"""
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def setRot(rotation):
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"""
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Set the Curve's rotation value.
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@rtype: PyNone
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@type rotation: list[3]
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@param rotation: The new Curve's rotation values.
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"""
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def getSize():
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"""
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Get the curve's size value.
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@rtype: a list of 3 floats.
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"""
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def setSize(size):
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"""
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Set the curve size value.
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@rtype: PyNone
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@type size: list[3]
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@param size: The new Curve's size values.
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"""
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def getMaterials():
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"""
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Returns a list of materials assigned to the Curve.
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@rtype: list of Material Objects
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@return: list of Material Objects assigned to the Curve.
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"""
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def getBevOb():
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"""
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Returns the Bevel Object (BevOb) assigned to the Curve.
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@rtype: Blender Object or PyNone
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@return: Bevel Object (BevOb) assigned to the Curve.
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"""
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def setBevOb( object ):
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"""
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Assign a Bevel Object (BevOb) to the Curve. Passing None as the object parameter removes the bevel.
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@rtype: PyNone
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@return: PyNone
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@type object: Curve type Blender Object
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@param object: Blender Object to assign as Bevel Object (BevOb)
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@raise TypeError: throws exception if the parameter is not a Curve type Blender Object or PyNone
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"""
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def update():
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"""
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Updates display list for a Curve.
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Used after making changes to control points.
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You B{must} use this if you want to see your changes!
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@rtype: PyNone
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@return: PyNone
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"""
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def isNurb( curve_num ):
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"""
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method used to determine whether a CurNurb is of type Bezier or of type Nurb.
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@rtype: integer
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@return: Zero if curve is type Bezier, One if curve is of type Nurb.
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@type curve_num: integer
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@param curve_num: zero-based index into list of curves in this Curve.
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@raise AttributeError: throws exception if curve_num is out of range.
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"""
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def isCyclic( curve_num ):
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"""
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Boolean method checks whether the curve is cyclic (closed) or not.
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@rtype: boolean
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@return: True if is cyclic, False if not
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@type curve_num: integer
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@param curve_num: zero-based index into list of curves in this Curve
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@raise AttributeError: throws exception if curve_num is out of range.
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"""
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def getNumCurves():
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"""
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Get the number of curves in this Curve Data object.
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@rtype: integer
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"""
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def getNumPoints( curve_num ):
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"""
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Get the number of control points in the curve.
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@type curve_num: integer
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@param curve_num: zero-based index into list of curves in this Curve
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@rtype: integer
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"""
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class CurNurb:
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"""
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The CurNurb Object
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==================
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This object provides access to the control points of the curves that make up a Blender Curve.
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The CurNurb supports the python iterator protocol which means you can use a python for statement to access the points in a curve.
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The CurNurb also supports the sequence protocol which means you can access the control points of a CurNurb using the [] operator.
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@cvar flagU: The CurNurb knot flag U (0: uniform, 1: endpoints, 2: bezier)
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@cvar flagV: The CurNurb knot flag V (0: uniform, 1: endpoints, 2: bezier)
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@cvar type: The type of the curve (Poly: 0, Bezier: 1, NURBS: 4)
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"""
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def __setitem__( n, point ):
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"""
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Replace the Nth point in the curve. The type of the argument must match the type of the curve. List of 4 floats (optional 5th float is the tilt value in radians) for Nurbs or BezTriple for Bezier.
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@rtype: PyNone
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@return: PyNone
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@type n: integer
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@param n: the index of the element to replace
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@type point: BezTriple or list of 4 floats (optional 5th float is the tilt value in radians)
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@param point: the point that will replace the one in the curve. The point can be either a BezTriple type or a list of 4 floats in x,y,z,w (optionally tilt in radians as 5th value) format for a Nurb curve.
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"""
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def __getitem__( n ):
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"""
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Get the Nth element in the curve. For Bezier curves, that element is a BezTriple. For the rest (Poly and Nurbs), it is a list of 5 floats: x, y, z, weight, tilt (in radians). NOTE 1: This element element is independant on the curve, modifying it will not affect the curve. NOTE 2: Each successive call returns a new object.
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@rtype: BezTriple (Bezier Curve) or List of 5 floats [x, y, z, w, t] for Poly or Nurbs
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@return: The Nth element in the curve
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@type n: integer
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@param n: the index of the element to return
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"""
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def append( new_point ):
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"""
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Appends a new point to a curve. This method appends points to both Bezier and Nurb curves. The type of the argument must match the type of the curve. List of 4 floats (optional 5th float is the tilt value in radians) for Nurbs or BezTriple for Bezier.
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@rtype: PyNone
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@return: PyNone
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@type new_point: BezTriple or list of 4 floats (optional 5th float is the tilt value in radians)
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@param new_point: the new point to be appended to the curve. The new point can be either a BezTriple type or a list of 4 floats in x,y,z,w (optionally tilt in radians as 5th value) format for a Nurb curve.
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"""
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def setMatIndex( index ):
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"""
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Sets the Material index for this CurNurb.
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@rtype: PyNone
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@return: PyNone
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@type index: integer
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@param index: the new value for the Material number of this CurNurb. No range checking is done.
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"""
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def getMatIndex():
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"""
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Returns the Material index for this CurNurb.
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@rtype: integer
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@return: integer
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"""
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def isNurb():
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"""
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Boolean method used to determine whether a CurNurb is of type Bezier or of type Nurb.
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@rtype: boolean
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@return: True or False
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"""
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def isCyclic():
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"""
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Boolean method checks whether a CurNurb is cyclic (a closed curve) or not.
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@rtype: boolean
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@return: True or False
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"""
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def getFlagU():
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"""
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Get the CurNurb knot flag U
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@rtype: integer
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@return: 0 - uniform, 1 - endpoints, 2 - bezier
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"""
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def setFlagU( value ):
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"""
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Set the CurNurb knot flag U (knots are recalculated automatically)
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@type value: integer
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@param value: CurNurb knot flag (0 - uniform, 1 - endpoints, 2 - bezier)
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@rtype: PyNone
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@return: PyNone
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"""
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def getFlagV():
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"""
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Get the CurNurb knot flag V
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@rtype: integer
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@return: 0 - uniform, 1 - endpoints, 2 - bezier
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"""
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def setFlagV( value ):
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"""
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Set the CurNurb knot flag V (knots are recalculated automatically)
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@type value: integer
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@param value: CurNurb knot flag (0 - uniform, 1 - endpoints, 2 - bezier)
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@rtype: PyNone
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@return: PyNone
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"""
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def getType():
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"""
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Get the type of the curve
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@rtype: integer
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@return: 0 - Poly, 1 - Bezier, 4 - NURBS
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"""
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def getType( value ):
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"""
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Set the type of the curve and converts the curve to its new type if needed
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@type value: integer
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@param value: CurNurb type flag (0 - Poly, 1 - Bezier, 4 - NURBS)
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@rtype: PyNone
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@return: PyNone
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"""
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