(C) 2004 Yves Aubry (yves.aubry)(@)(netibu)(com)
FOR TESTING ONLY, not for redistribution
Lastest version available for from:
http://www.netibu.com/blender.php
USAGE:
-By Menu-
* Put this file in ~/.blender/scripts/
* Select one mesh, then choose "YqllViews" from the
scripts menu.
-By Running the script-
* Load this file into blender's internal text editor
* Select one mesh, then press Alt+P in the test editor
OPERATIONS:
On execution of the script, a file name is to be choosen
After the script executes, the svg file is available
TO DO:
* choose the page format
* add a grid
* export to postscript
-----------------------------------------------------------------
Date: Updates:
23-Dec-2005 Initial Revision - working & ready to go
"""
__author__ = "Yves Aubry"
__version__ = "r1 23-Dec-05"
__email__ = ('Author EMail, yves.aubry:netibu*com')
__url__ = ('?','Script Web Page, http://www.netibu.com/blender.php')
import Blender
from Blender import Object
from Blender import Draw
from Blender import NMesh
SVGFile=0
# This function projects point I with mO then mV
#
# mO : object matrix
# mV : view matrix
# I : point to project
#
# returns a 2x1 matrix
def Projection(mO,mV,Ix,Iy,Iz):
Nx = mO[0][0] * Ix + mO[1][0] * Iy + mO[2][0] * Iz
Ny = mO[0][1] * Ix + mO[1][1] * Iy + mO[2][1] * Iz
Nz = mO[0][2] * Ix + mO[1][2] * Iy + mO[2][2] * Iz
Mx = mV[0][0] * Nx + mV[1][0] * Ny + mV[2][0] * Nz
My = mV[0][1] * Nx + mV[1][1] * Ny + mV[2][1] * Nz
Mz = mV[0][2] * Nx + mV[1][2] * Ny + mV[2][2] * Nz
return [Mx,-My]
# This function put the ObMesh object on the SVG page
#
# ViewMatrix : from which direction the Mesh is viewed
# PagePosition : position of the SVG object on the page
# Scale : To be sure that the object is inside the page
# 0 : scale, 1 : translationX, 2 : translationY
# ObMesh : the object itself
#
def UserView(ViewMatrix,PagePosition,Scale,ObMesh):
global SVGFile,minX,maxX,minY,maxY
# passage par tous les edges du mesh
m = NMesh.GetRawFromObject(ObMesh.getName())
for v in m.faces:
for i in range(len(v)):
xy1 = Projection(ObMesh.getMatrix(),ViewMatrix,v[i][0],v[i][1],v[i][2])
xy2 = Projection(ObMesh.getMatrix(),ViewMatrix,v[(i+1)%len(v)][0],v[(i+1)%len(v)][1],v[(i+1)%len(v)][2])
if (Scale == 0):
if(xy1[0] < minX):
minX = xy1[0]
if(xy2[0] < minX):
minX = xy2[0]
if(xy1[0] > maxX):
maxX = xy1[0]
if(xy1[0] > maxX):
maxX = xy2[0]
if(xy1[1] < minY):
minY = xy1[1]
if(xy2[1] < minY):
minY = xy2[1]
if(xy1[1] > maxY):
maxY = xy1[1]
if(xy1[1] > maxY):
maxY = xy2[1]
else:
# in both point are nearly at the same place, it makes silly things in inkscape (at least)
# then the line is skipped
if (abs(xy1[0]*Scale[0]+Scale[1]-xy2[0]*Scale[0]-Scale[1]) > 0.01 or abs(xy1[1]*Scale[0]+Scale[2]-xy2[1]*Scale[0]-Scale[2]) > 0.01):
SVGFile.write(str('\t\n' % (xy1[0]*Scale[0]+Scale[1],xy1[1]*Scale[0]+Scale[2],xy2[0]*Scale[0]+Scale[1],xy2[1]*Scale[0]+Scale[2])))
# This function open the SVG file, call the UserView for each view
# the close the file
#
def GetFileName(filename):
global SVGFile,minX,maxX,minY,maxY
SVGFile = open(filename,'w')
# Entete SVG
SVGFile.write('")
SVGFile.close()
def DoSVG():
objsel = Object.GetSelected()
meshes = 0
others = 0
for ob in objsel :
if ob.getType() == 'Mesh' :
meshes += 1
else:
others += 1
if others != 0 :
Draw.PupMenu("ERROR : Only meshes should be selected")
return
if meshes != 1 :
Draw.PupMenu("ERROR : only one mesh should be selected")
return
Blender.Window.FileSelector(GetFileName,"SVG filename")
DoSVG()