forked from bartvdbraak/blender
a41759cb8b
Campbell Barton updated his Wavefront OBJ scripts and Ben Omari updated his DirectX 7 and 8 ones (thanks both). The other listed scripts had minor updates to accomodate the menu changes. - Scripts in menus: renamed Tools to Object, Generators to Add, and Modifiers to Mesh (Metaball, Curve, Surface can be added later), to integrate better in the interface. - Fixed a bug in Blender.sys.makename: last letter of file extension was being cut out.
691 lines
19 KiB
Python
691 lines
19 KiB
Python
#!BPY
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"""
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Name: 'Blender Knife Tool'
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Blender: 232
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Group: 'Mesh'
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Tooltip: 'Cut a mesh along a plane w/o creating doubles'
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"""
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# $Id$
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#
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###################################################################
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# #
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# Blender Knife Tool #
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# #
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# v. 0.0.0 - 0.0.6 (C) December 2002 Stefano <S68> Selleri #
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# v. 0.0.7 (C) March 2004 Wim Van Hoydonck #
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# v. 0.0.8 (C) March 2004 Wim Van Hoydonck & Stefano <S68> Selleri#
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# #
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# Released under the Blender Artistic Licence (BAL) #
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# See www.blender.org #
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# #
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# Works in Blender 2.32 and higher #
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# #
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# this script can be found online at: #
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# http://users.pandora.be/tuinbels/scripts/knife-0.0.8.py #
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# http://www.selleri.org/Blender #
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# #
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# email: tuinbels@hotmail.com #
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# selleri@det.unifi.it #
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###################################################################
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# History #
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# V: 0.0.0 - 08-12-02 - The script starts to take shape, a #
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# history is now deserved :) #
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# 0.0.1 - 09-12-02 - The faces are correctly selected and #
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# assigned to the relevant objects now the #
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# hard (splitting) part... #
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# 0.0.2 - 14-12-02 - Still hacking on the splitting... #
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# It works, but I have to de-globalize #
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# the intersection coordinates #
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# 0.0.3 - 15-12-02 - First Alpha version #
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# 0.0.4 - 17-12-02 - Upgraded accordingly to eeshlo tips #
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# Use Matrices for coordinate transf. #
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# Add a GUI #
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# Make it Run on 2.23 #
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# 0.0.5 - 17-12-02 - Eeshlo solved some problems.... #
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# Theeth too adviced me #
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# 0.0.6 - 18-12-02 - Better error messages #
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# 0.0.7 - 26-03-04 - Developer team doubles! #
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# This version is by Wim! #
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# Doesn't create doubles (AFAIK) #
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# - Faster (for small meshes), global #
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# coordinates of verts are calculated only #
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# once #
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# - Editing the CutPlane in editmode (move) #
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# shouldn't cause problems anymore #
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# - Menu button added to choose between the #
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# different Edit Methods #
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# - If a mesh is cut twice at the same place, #
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# this gives errors :( (also happened in #
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# previous versions) #
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# - Willian Padovani Germano solved #
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# a problem, many thanks :) #
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# - Stefano Selleri made some good #
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# suggestions, thanks :) #
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# 0.0.8 - 26-03-04 - General Interface rewrite (Stefano) #
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# 0.0.8a- 31-03-04 - Added some error messages #
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# - Cut multiple meshes at once #
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# #
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###################################################################
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import Blender
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from Blender import *
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from Blender.sys import time
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from math import *
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Epsilon = 0.00001
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msg = ''
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RBmesh0 = Draw.Create(0)
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RBmesh1 = Draw.Create(0)
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RBmesh2 = Draw.Create(1)
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VERSION = '0.0.8'
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# see if time module is available
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#try:
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# import time
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# timport = 1
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#except:
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# timport = 0
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BL_VERSION = Blender.Get('version')
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if (BL_VERSION<=223):
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import Blender210
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#=================================#
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# Vector and matrix manipulations #
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#=================================#
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# vector addition
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def vecadd(a, b):
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return [a[0] - b[0], a[1] - b[1], a[2] + b[2]]
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# vector substration
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def vecsub(a, b):
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return [a[0] - b[0], a[1] - b[1], a[2] - b[2]]
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# vector crossproduct
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def veccross(x, y):
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v = [0, 0, 0]
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v[0] = x[1]*y[2] - x[2]*y[1]
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v[1] = x[2]*y[0] - x[0]*y[2]
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v[2] = x[0]*y[1] - x[1]*y[0]
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return v
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# vector dotproduct
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def vecdot(x, y):
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return x[0]*y[0] + x[1]*y[1] + x[2]*y[2]
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# vector length
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def length(v):
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return sqrt(v[0]*v[0] + v[1]*v[1] + v[2]*v[2])
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# vector multiplied by constant s
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def vecmul(a, s):
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return[a[0]*s, a[1]*s, a[2]*s]
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# vector divided by constant s
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def vecdiv(a, s):
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if s!=0.0: s = 1.0/s
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return vecmul(a, s)
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# matrix(4x3) vector multiplication
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def mulmatvec4x3(a, b):
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# a is vector, b is matrix
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r = [0, 0, 0]
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r[0] = a[0]*b[0][0] + a[1]*b[1][0] + a[2]*b[2][0] + b[3][0]
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r[1] = a[0]*b[0][1] + a[1]*b[1][1] + a[2]*b[2][1] + b[3][1]
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r[2] = a[0]*b[0][2] + a[1]*b[1][2] + a[2]*b[2][2] + b[3][2]
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return r
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# Normalization of a vector
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def Normalize(a):
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lengte = length(a)
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return vecdiv(a, lengte)
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# calculate normal from 3 verts
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def Normal(v0, v1, v2):
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return veccross(vecsub(v0, v1),vecsub(v0, v2))
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#===========================#
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# Coordinatetransformations #
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#===========================#
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def GlobalPosition(P, Obj):
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if (BL_VERSION<=223):
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m = Obj.matrix
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else:
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m = Obj.getMatrix()
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return mulmatvec4x3(P, m)
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def LocalPosition(P, Obj):
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if (BL_VERSION<=223):
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m = Blender210.getObject(Obj.name).inverseMatrix
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else:
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m = Obj.getInverseMatrix()
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return mulmatvec4x3(P, m)
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#================#
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# Get Plane Data #
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#================#
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def PlaneData(Plane):
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global msg
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#
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# Calculate:
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# - the normal of the plane,
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# - the offset of the plane wrt the global coordinate system
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# in the direction of the normal of the plane
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#
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PlaneMesh = NMesh.GetRawFromObject(Plane.name)
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if (len(PlaneMesh.faces)>1):
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msg = "ERROR: Active object must be a single face plane"
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return ((0,0,0),(0,0,0),1)
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else:
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if (len(PlaneMesh.verts)<3):
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msg = "ERROR: 3 vertices needed to define a plane"
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return ((0,0,0),(0,0,0),1)
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else:
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v0 = GlobalPosition(PlaneMesh.faces[0].v[0].co, Plane)
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v1 = GlobalPosition(PlaneMesh.faces[0].v[1].co, Plane)
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v2 = GlobalPosition(PlaneMesh.faces[0].v[2].co, Plane)
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# the normal of the plane, calculated from the first 3 verts
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PNormal = Normalize(Normal(v0,v1,v2))
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# offset of the plane, using 1st vertex instead of Plane.getLocaction()
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POffset = vecdot(v0,PNormal)
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return PNormal, POffset, 0
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#====================================#
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# Position with respect to Cut Plane #
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#====================================#
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def Distance(P, N, d0):
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#
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# distance from a point to a plane
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#
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return vecdot(P, N) - d0
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def FacePosition(dist):
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#
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# position of a face wrt to the plane
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#
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np, nn, nz = 0, 0, 0
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for d in dist:
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# the distances are calculated in advance
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if d > 0:
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np += 1
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elif d < 0:
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nn += 1
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else:
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nz += 1
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if np == 0:
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return -1
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if nn == 0:
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return 1
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return 0
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#==========================================#
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# Append existing faces / create new faces #
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#==========================================#
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def FaceAppend(me, fidx):
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#
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# append a face to a mesh based on a list of vertex-indices
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#
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nf = NMesh.Face()
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for i in fidx:
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nf.v.append(me.verts[i])
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me.faces.append(nf)
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def FaceMake(me, vl):
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#
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# make one or two new faces based on a list of vertex-indices
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#
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idx = len(me.verts)
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if len(vl) <= 4:
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nf = NMesh.Face()
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for i in range(len(vl)):
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nf.v.append(me.verts[vl[i]])
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me.faces.append(nf)
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else:
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nf = NMesh.Face()
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nf.v.append(me.verts[vl[0]])
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nf.v.append(me.verts[vl[1]])
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nf.v.append(me.verts[vl[2]])
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nf.v.append(me.verts[vl[3]])
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me.faces.append(nf)
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nf = NMesh.Face()
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nf.v.append(me.verts[vl[3]])
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nf.v.append(me.verts[vl[4]])
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nf.v.append(me.verts[vl[0]])
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me.faces.append(nf)
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#=====================================#
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# Generate vertex lists for new faces #
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#=====================================#
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def Split(Obj, MeshPos, MeshNeg, Vglob, Vidx, N, d0, newvidx, newvcoo, totverts, d):
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#
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# - calculate intersectionpoints of the plane with faces
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# - see if this intersectionpoint already exists (look for vertices close to the new vertex)
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# - if it does not yet exist, append a vertex to the mesh,
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# remember its index and location and append the index to the appropriate vertex-lists
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# - if it does, use that vertex (and its index) to create the face
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#
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vp = []
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vn = []
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# distances of the verts wrt the plane are calculated in main part of script
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for i in range(len(d)):
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# the previous vertex
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dim1 = d[int(fmod(i-1,len(d)))]
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Vim1 = Vglob[int(fmod(i-1,len(d)))]
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if abs(d[i]) < Epsilon:
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# if the vertex lies in the cutplane
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vp.append(Vidx[i])
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vn.append(Vidx[i])
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else:
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if abs(dim1) < Epsilon:
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# if the previous vertex lies in cutplane
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if d[i] > 0:
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vp.append(Vidx[i])
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else:
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vn.append(Vidx[i])
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else:
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if d[i]*dim1 > 0:
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# if they are on the same side of the plane
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if d[i] > 0:
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vp.append(Vidx[i])
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else:
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vn.append(Vidx[i])
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else:
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# the vertices are not on the same side of the plane, so we have an intersection
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Den = vecdot(vecsub(Vglob[i],Vim1),N)
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Vi = []
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Vi.append ( ((Vim1[0]*Vglob[i][1]-Vim1[1]*Vglob[i][0])*N[1]+(Vim1[0]*Vglob[i][2]-Vim1[2]*Vglob[i][0])*N[2]+(Vglob[i][0]-Vim1[0])*d0)/Den)
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Vi.append ( ((Vim1[1]*Vglob[i][0]-Vim1[0]*Vglob[i][1])*N[0]+(Vim1[1]*Vglob[i][2]-Vim1[2]*Vglob[i][1])*N[2]+(Vglob[i][1]-Vim1[1])*d0)/Den)
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Vi.append ( ((Vim1[2]*Vglob[i][0]-Vim1[0]*Vglob[i][2])*N[0]+(Vim1[2]*Vglob[i][1]-Vim1[1]*Vglob[i][2])*N[1]+(Vglob[i][2]-Vim1[2])*d0)/Den)
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ViL = LocalPosition(Vi, Obj)
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if newvidx == []:
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# if newvidx is empty (the first time Split is called), append a new vertex
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# to the mesh and remember its vertex-index and location
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ViLl = NMesh.Vert(ViL[0],ViL[1],ViL[2])
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if MeshPos == MeshNeg:
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MeshPos.verts.append(ViLl)
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else:
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MeshPos.verts.append(ViLl)
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MeshNeg.verts.append(ViLl)
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nvidx = totverts
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newvidx.append(nvidx)
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newvcoo.append(ViL)
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vp.append(nvidx)
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vn.append(nvidx)
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else:
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# newvidx is not empty
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dist1 = []
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tlr = 0
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for j in range(len(newvidx)):
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# calculate the distance from the new vertex to the vertices
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# in the list with new vertices
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dist1.append(length(vecsub(ViL, newvcoo[j])))
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for k in range(len(dist1)):
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if dist1[k] < Epsilon:
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# if distance is smaller than epsilon, use the other vertex
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# use newvidx[k] as vert
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vp.append(newvidx[k])
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vn.append(newvidx[k])
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break # get out of closest loop
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else:
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tlr += 1
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if tlr == len(newvidx):
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nvidx = totverts + len(newvidx)
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ViLl = NMesh.Vert(ViL[0],ViL[1],ViL[2])
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if MeshPos == MeshNeg:
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MeshPos.verts.append(ViLl)
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else:
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MeshPos.verts.append(ViLl)
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MeshNeg.verts.append(ViLl)
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newvidx.append(nvidx)
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newvcoo.append(ViL)
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vp.append(nvidx)
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vn.append(nvidx)
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if d[i] > 0:
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vp.append(Vidx[i])
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else:
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vn.append(Vidx[i])
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return vp, vn, newvidx, newvcoo
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#===========#
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# Main part #
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#===========#
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def CutMesh():
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global msg
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global RBmesh0,RBmesh1,RBmesh2
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#if timport == 1:
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# start = time.clock()
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start = time()
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selected_obs = Object.GetSelected()
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total = len(selected_obs)
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NoErrors=0
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meshes = 0
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# check to see if every selected object is a mesh
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for ob in selected_obs:
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type = ob.getType()
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if type == 'Mesh':
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meshes += 1
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# at least select two objects
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if meshes <= 1:
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msg = "ERROR: At least two objects should be selected"
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NoErrors = 1
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# if not every object is a mesh
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if meshes != total:
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msg = "ERROR: You should only select meshobjects"
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NoErrors=1
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# everything is ok
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if NoErrors == 0:
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Pln = selected_obs[0]
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PNormal, POffset, NoErrors = PlaneData(Pln)
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# loop to cut multiple meshes at once
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for o in range(1, total):
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Obj = selected_obs[o]
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if (NoErrors == 0) :
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m = Obj.getData()
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if RBmesh1.val == 1:
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MeshNew = NMesh.GetRaw()
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if RBmesh2.val == 1:
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MeshPos = NMesh.GetRaw()
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MeshNeg = NMesh.GetRaw()
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# get the indices of the faces of the mesh
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idx = []
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for i in range(len(m.faces)):
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idx.append(i)
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# if idx is not reversed, this results in a list index out of range if
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# the original mesh is used (RBmesh1 == 0)
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idx.reverse()
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lenface, vertglob, vertidx, vertdist = [], [], [], []
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# total number of vertices
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totverts = len(m.verts)
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# for every face: calculate global coordinates of the vertices
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# append the vertex-index to a list
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# calculate distance of vertices to cutplane in advance
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for i in idx:
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fvertidx, Ve, dist = [], [], []
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fa = m.faces[i]
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lenface.append(len(fa))
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for v in fa.v:
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globpos = GlobalPosition(v.co, Obj)
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Ve.append(globpos)
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fvertidx.append(v.index)
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dist.append(Distance(globpos, PNormal, POffset))
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vertidx.append(fvertidx)
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vertglob.append(Ve)
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vertdist.append(dist)
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# append the verts of the original mesh to the new mesh
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if RBmesh1.val == 1:
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for v in m.verts:
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MeshNew.verts.append(v)
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if RBmesh2.val == 1:
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idx2 = []
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dist2 = []
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for v in m.verts:
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MeshPos.verts.append(v)
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MeshNeg.verts.append(v)
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idx2.append(v.index)
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dist2.append(Distance(GlobalPosition(v.co, Obj), PNormal, POffset))
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# remove all faces of m if the original object has to be used
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if RBmesh0.val == 1:
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m.faces = []
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newvidx, newvcoo = [], []
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testidxpos, testidxneg = [], []
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# what its all about...
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for i in idx:
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fp = FacePosition(vertdist[i])
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# no intersection
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if fp > 0:
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if RBmesh0.val == 1:
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FaceAppend(m, vertidx[i])
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elif RBmesh1.val == 1:
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FaceAppend(MeshNew, vertidx[i])
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elif RBmesh2.val == 1:
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FaceAppend(MeshPos, vertidx[i])
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|
|
|
if testidxpos == []:
|
|
testidxpos = vertidx[i]
|
|
elif fp < 0:
|
|
if RBmesh0.val == 1:
|
|
FaceAppend(m, vertidx[i])
|
|
elif RBmesh1.val == 1:
|
|
FaceAppend(MeshNew, vertidx[i])
|
|
|
|
elif RBmesh2.val == 1:
|
|
FaceAppend(MeshNeg, vertidx[i])
|
|
|
|
if testidxneg == []:
|
|
testidxneg = vertidx[i]
|
|
|
|
# intersected faces
|
|
else:
|
|
# make new mesh
|
|
if RBmesh1.val == 1:
|
|
vlp, vln, newvidx, newvcoo = Split(Obj, MeshNew, MeshNew, vertglob[i], vertidx[i], PNormal, POffset, newvidx, newvcoo, totverts, vertdist[i])
|
|
|
|
if vlp != 0 and vln != 0:
|
|
FaceMake(MeshNew, vlp)
|
|
FaceMake(MeshNew, vln)
|
|
# two new meshes
|
|
elif RBmesh2.val == 1:
|
|
vlp, vln, newvidx, newvcoo = Split(Obj, MeshPos, MeshNeg, vertglob[i], vertidx[i], PNormal, POffset, newvidx, newvcoo, totverts, vertdist[i])
|
|
|
|
if vlp != 0 and vln != 0:
|
|
FaceMake(MeshPos, vlp)
|
|
FaceMake(MeshNeg, vln)
|
|
|
|
# use old mesh
|
|
elif RBmesh0.val == 1:
|
|
|
|
vlp, vln, newvidx, newvcoo = Split(Obj, m, m, vertglob[i], vertidx[i], PNormal, POffset, newvidx, newvcoo, totverts, vertdist[i])
|
|
|
|
if vlp != 0 and vln != 0:
|
|
FaceMake(m, vlp)
|
|
FaceMake(m, vln)
|
|
|
|
if RBmesh1.val == 1:
|
|
|
|
ObOne = NMesh.PutRaw(MeshNew)
|
|
|
|
ObOne.LocX, ObOne.LocY, ObOne.LocZ = Obj.LocX, Obj.LocY, Obj.LocZ
|
|
ObOne.RotX, ObOne.RotY, ObOne.RotZ = Obj.RotX, Obj.RotY, Obj.RotZ
|
|
ObOne.SizeX, ObOne.SizeY, ObOne.SizeZ = Obj.SizeX, Obj.SizeY, Obj.SizeZ
|
|
|
|
elif RBmesh2.val == 1:
|
|
|
|
# remove verts that do not belong to a face
|
|
idx2.reverse()
|
|
dist2.reverse()
|
|
|
|
for i in range(len(idx2)):
|
|
if dist2[i] < 0:
|
|
v = MeshPos.verts[idx2[i]]
|
|
MeshPos.verts.remove(v)
|
|
if dist2[i] > 0:
|
|
v = MeshNeg.verts[idx2[i]]
|
|
MeshNeg.verts.remove(v)
|
|
|
|
ObPos = NMesh.PutRaw(MeshPos)
|
|
|
|
ObPos.LocX, ObPos.LocY, ObPos.LocZ = Obj.LocX, Obj.LocY, Obj.LocZ
|
|
ObPos.RotX, ObPos.RotY, ObPos.RotZ = Obj.RotX, Obj.RotY, Obj.RotZ
|
|
ObPos.SizeX, ObPos.SizeY, ObPos.SizeZ = Obj.SizeX, Obj.SizeY, Obj.SizeZ
|
|
|
|
ObNeg = NMesh.PutRaw(MeshNeg)
|
|
|
|
ObNeg.LocX, ObNeg.LocY, ObNeg.LocZ = Obj.LocX, Obj.LocY, Obj.LocZ
|
|
ObNeg.RotX, ObNeg.RotY, ObNeg.RotZ = Obj.RotX, Obj.RotY, Obj.RotZ
|
|
ObNeg.SizeX, ObNeg.SizeY, ObNeg.SizeZ = Obj.SizeX, Obj.SizeY, Obj.SizeZ
|
|
|
|
elif RBmesh0.val == 1:
|
|
m.update()
|
|
|
|
|
|
#if timport == 1:
|
|
#end = time.clock()
|
|
#total = end - start
|
|
#print "mesh(es) cut in", total, "seconds"
|
|
|
|
end = time()
|
|
total = end - start
|
|
print "mesh(es) cut in", total, "seconds"
|
|
|
|
#############################################################
|
|
# Graphics #
|
|
#############################################################
|
|
def Warn():
|
|
BGL.glRasterPos2d(115, 23)
|
|
Blender.Window.Redraw(Blender.Window.Const.TEXT)
|
|
|
|
def draw():
|
|
global msg
|
|
global RBmesh0,RBmesh1,RBmesh2
|
|
global VERSION
|
|
|
|
BGL.glClearColor(0.5, 0.5, 0.5, 0.0)
|
|
BGL.glClear(BGL.GL_COLOR_BUFFER_BIT)
|
|
BGL.glColor3f(0, 0, 0) # Black
|
|
BGL.glRectf(2, 2, 482, 220)
|
|
BGL.glColor3f(0.48, 0.4, 0.57) # Light Purple
|
|
BGL.glRectf(4, 179, 480, 210)
|
|
BGL.glRectf(4, 34, 480, 150)
|
|
BGL.glColor3f(0.3, 0.27, 0.35) # Dark purple
|
|
BGL.glRectf(4, 151,480, 178)
|
|
BGL.glRectf(4, 4, 480, 33)
|
|
|
|
|
|
BGL.glColor3f(1, 1, 1)
|
|
BGL.glRasterPos2d(8, 200)
|
|
Draw.Text("Blender Knife Tool - V. 0.0.8a - 26 March 2004")
|
|
BGL.glRasterPos2d(8, 185)
|
|
Draw.Text("by Wim <tuinbels> Van Hoydonck & Stefano <S68> Selleri")
|
|
Draw.Button("Exit", 1, 430, 185, 40, 20)
|
|
|
|
RBmesh0 = Draw.Toggle("Edit Object", 10,10,157,153,18,RBmesh0.val, "The knife creates new vertices in the selected object.");
|
|
RBmesh1 = Draw.Toggle("New Object", 11,165,157,153,18,RBmesh1.val, "The knife duplicates the object and creates new vertices in the new object.");
|
|
RBmesh2 = Draw.Toggle("Two New Objects",12,320,157,153,18,RBmesh2.val, "The knife creates two new separate objects.");
|
|
|
|
BGL.glRasterPos2d(8, 128)
|
|
Draw.Text("1 - Draw a Mesh Plane defining the Cut Plane")
|
|
BGL.glRasterPos2d(8, 108)
|
|
Draw.Text("2 - Select the Meshes to be Cut and the Cut Plane")
|
|
BGL.glRasterPos2d(8, 88)
|
|
Draw.Text(" (Meshes Dark Purple, Plane Light Purple)")
|
|
BGL.glRasterPos2d(8, 68)
|
|
Draw.Text("3 - Choose the Edit Method (Radio Buttons above)")
|
|
BGL.glRasterPos2d(8, 48)
|
|
Draw.Text("4 - Push the 'CUT' button (below)")
|
|
#Create Buttons
|
|
Draw.Button("CUT", 4, 10, 10, 465, 18, "Cut the selected mesh along the plane")
|
|
|
|
|
|
BGL.glRasterPos2d(10, 223)
|
|
BGL.glColor3f(1,0,0)
|
|
Draw.Text(msg)
|
|
msg = ''
|
|
|
|
def event(evt, val):
|
|
if evt == Draw.QKEY and not val:
|
|
Draw.Exit()
|
|
if evt == Draw.CKEY and not val:
|
|
CutMesh()
|
|
Draw.Redraw()
|
|
|
|
def bevent(evt):
|
|
global RBmesh0,RBmesh1,RBmesh2
|
|
|
|
if evt == 1:
|
|
Draw.Exit()
|
|
elif evt == 4:
|
|
CutMesh()
|
|
Draw.Redraw()
|
|
elif evt == 10:
|
|
RBmesh0.val = 1
|
|
RBmesh1.val = 0
|
|
RBmesh2.val = 0
|
|
Draw.Redraw()
|
|
elif evt == 11:
|
|
RBmesh0.val = 0
|
|
RBmesh1.val = 1
|
|
RBmesh2.val = 0
|
|
Draw.Redraw()
|
|
elif evt == 12:
|
|
RBmesh0.val = 0
|
|
RBmesh1.val = 0
|
|
RBmesh2.val = 1
|
|
Draw.Redraw()
|
|
|
|
Draw.Register(draw, event, bevent)
|