#!/usr/bin/env pyformex --gui
# $Id$
##
##  This file is part of pyFormex 0.8.5     Sun Nov  6 17:27:05 CET 2011
##  pyFormex is a tool for generating, manipulating and transforming 3D
##  geometrical models by sequences of mathematical operations.
##  Home page: http://pyformex.org
##  Project page:  https://savannah.nongnu.org/projects/pyformex/
##  Copyright (C) Benedict Verhegghe (benedict.verhegghe@ugent.be) 
##  Distributed under the GNU General Public License version 3 or later.
##
##
##  This program is free software: you can redistribute it and/or modify
##  it under the terms of the GNU General Public License as published by
##  the Free Software Foundation, either version 3 of the License, or
##  (at your option) any later version.
##
##  This program is distributed in the hope that it will be useful,
##  but WITHOUT ANY WARRANTY; without even the implied warranty of
##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
##  GNU General Public License for more details.
##
##  You should have received a copy of the GNU General Public License
##  along with this program.  If not, see http://www.gnu.org/licenses/.
##
"""TrussFrame

level = 'normal'
topics = ['geometry']
techniques = ['color']

"""
clear()
yf = [ 0.0, 0.2, 1.2, 2.2, 3.2, 4.2, 4.5 ] # y of nodes in frame columns
a = Formex([[[0.0,y]] for y in yf ])
b = connect([a,a],bias=[0,1]).translate([0.5,0.0,0.0])
b.setProp(3)
c = b.reflect(0)
d = connect([b,c],bias=[1,1])
d.setProp(2)
e = connect([b,c],bias=[1,2]).select([0,2]) + connect([b,c],bias=[2,1]).select([1,3])
e.setProp(1)
col = b+c+d+e
frame = col.translate([-4.0,0.0,0.0]) + col.translate([+4.0,0.0,0.0])

# Dakligger
h0 = 1.2 # hoogte in het midden
h1 = 0.5 # hoogte aan het einde
xd = [ 0, 0.6 ] + [ 0.6+i*1.2 for i in range(5)] # hor. positie knopen
ko = Formex([[[x,0.0]] for x in xd])
ond = connect([ko,ko],bias=[0,1])
bov = ond.translate(1,h0).shear(1,0,(h1-h0)/xd[-1])
tss = connect([ond,bov],bias=[1,1])
ond.setProp(2)
bov.setProp(4)
tss.setProp(5)
dakligger = (ond+bov+tss)
dakligger += dakligger.reflect(0)
frame += dakligger.translate([0,yf[-1],0])
draw(frame)

structure = frame.replic2(2,6,12.,3.,0,2)
clear()
draw(structure)
view('top')
view('right')
view('iso')
