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#!/usr/bin/python
from skdb.geom import *
from skdb.gui import *
#test that a shape can be transformed in the same way that a make_vertex object is transformed
#test also gp_Pnt.Transform and BRepBuilderAPI_Transform
#do the points line up? vert2 and obj should be the same.
#now use SetTransformation
#TODO use TopExp to find the point of the arrow, then compare gp_Pnt's
if __name__ == "__main__":
trsf1 = gp_Trsf()
my_ax3 = gp_Ax3(gp_Ax2(gp_Pnt(0,2.1,0), gp_Dir(-1,1,1)))
trsf1.SetTransformation(my_ax3)
point2 = Point(0,0,0)
point2.Transform(trsf1)
vert2 = make_vertex(point2)
#apply BRepBuilderAPI_Transform to vertex1
vert1 = make_vertex(Point(0,2.1,0))
obj = BRepBuilderAPI_Transform(vert1, trsf1, True).Shape()
my_ax = gp_Ax2(gp_Pnt(0,2.1,0), gp_Dir(-1,1,1))
my_ax.SetDirection(gp_Dir(-1,0,0))
my_ax = gp_Ax3(my_ax)
print my_ax.Direct() #when my_ax is gp_Ax3
blahr = gp_Trsf(); blahr.SetTransformation(my_ax)
arrow3 = Arrow().to(dest=blahr) #tests BRepBuilderAPI_Transform
display.DisplayShape(make_vertex(Point(0,0,0))) #display origin marker
display.DisplayShape(obj) #vert1 but with BRepBuilderAPI_Transform applied to it
display.DisplayColoredShape(vert2,'GREEN') #make_vertex(point2)
display.DisplayColoredShape(arrow3,'RED') #make_arrow_to
start_display()
pt1 = gp_Pnt(0,0,-1) #0,0,-1
trsf1 = gp_Trsf()
normal_vec = gp_Dir(0,1,0)
x_vec = gp_Dir(1,0,0)
trsf1.SetTransformation(gp_Ax3(gp_Ax2(gp_Pnt(0,0,0), gp_Dir(0,1,0), gp_Dir(1,0,0)))) #0,0,-1 --> 0,1,0
print pt1.Transformed(trsf1).XYZ().X(); pt1.Transformed(trsf1).XYZ().Y(); pt1.Transformed(trsf1).XYZ().Z() #0, 1, 0
def tlater(point=Point(1,0,0), origin=Point(0,0,0), normal=Direction(0,0,1), vx=Direction(1,0,0)):
'''
constructs a transformation
point = Point(point)
origin = Point(origin)
normal_vec = Direction(normal)
x_vec = Direction(vx)
'''
point = Point(point)
origin = Point(origin)
normal_vec = Direction(normal)
x_vec = Direction(vx)
trsf = gp_Trsf()
trsf.SetTransformation(gp_Ax3(gp_Ax2(origin, normal_vec, x_vec)))
resulting_point = point.Transformed(trsf)
print "\t(%s, %s, %s)" % (resulting_point.XYZ().X(), resulting_point.XYZ().Y(), resulting_point.XYZ().Z())
return resulting_point
def big_test():
for a in [0, 1, -1]:
for b in [0, 1, -1]:
for c in [0, 1, -1]:
for d in [0, 1, -1]:
for e in [0, 1, -1]:
for f in [0, 1, -1]:
try:
normal = Direction(a,b,c)
vx = Direction(d,e,f)
print "normal=%s, vx=%s" % ([a,b,c], [d,e,f]) #% (normal, vx) <-- doesn't produce the right results
tlater(normal=normal, vx=vx)
except RuntimeError, v:
True #oops?
return
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