Back to SDS/2 Parametric Scripts

##Plane3PConsCircle3D.py Version 1.02

##Copyright (c) 2006 Bruce Vaughan, BV Detailing & Design, Inc.

##All rights reserved.

#############################################################################

"""

/// Given 3 non-collinear points, define three planes and calculate the radius and center point

/// of the circle connecting the points. Add a construction circle and a miscellaneous member object representing the

/// center point and normal unit vector in the current SDS/2 modeling view.

/// User can be in any model orientation.

/// Developed by Bruce Vaughan, BV Detailing & Design, Inc. (September 2006)

/// URL: www.bvdetailing.com

/// Credit Paul Bourke for 'Equation of a plane' (March 1989) and 'Intersection of three planes' (October 2001)

///

///

/// Revision History:

/// Version 1.02 (11/10/06) - Code simplification: 'if pt1 != None and pt2 != None and pt3 != None:' >>> 'if None not in (pt1, pt2, pt3):'

/// Version 1.03 (1/22/07) - Remove 'yes_or_no' add cons line?

/// Add construction circle offsets after adding 3 point cons circle

"""

def run_script():

# startup code begin

from macrolib.P3D import Plane3D

from param import yes_or_no, Prompt

from member import Member, MemberLocate

from point import Point, PointLocate

from cons_circle import ConsCircle

from rnd_bar import RndBar

# from macrolib.PrintLocals import print_local_namespace

# startup code end

###########################################

while 1:

pt1 = PointLocate("Pick point 1")

pt2 = PointLocate("Pick point 2")

pt3 = PointLocate("Pick point 3")

if None not in (pt1, pt2, pt3):

a = Plane3D(pt1, pt2, pt3)

if a.N_len > 0.0:

a.three_pt_circle()

# print print_local_namespace("Local Variables:\n", locals())

if a.R > 0.0:

# Add construction circle

cc2 = ConsCircle()

cc2.pt1 = a.M

cc2.radius = a.R

cc2.pen = "Cyan"

cc2.add()

if yes_or_no("Add a miscellaneous member to mark the center point?") == 1:

# Add miscellaneous member at center point

# The length will be one unit and will represent a.N_uv

memadd1 = Member('Misc Round Bar')

memadd1.left.location = a.M

memadd1.right.location = a.M + a.N_uv

memadd1.grade = "A36"

memadd1.centered = "Yes"

memadd1.bar_diameter = 1

memadd1.work_pt_dist = 1.0

memadd1.mtrl_type = "Round bar"

memadd1.finish = "None"

memadd1.ref_pt_offset = (0, 0, 0)

memadd1.add()

if yes_or_no("Add offset construction circles?") == 1:

rad = a.R

while True:

offset = Prompt(0.0, "Enter offset dimension or '0' if done")

if offset == 0:

break

else:

rad += offset

# Add construction circle

cc2 = ConsCircle()

cc2.pt1 = a.M

cc2.radius = rad

cc2.pen = "Cyan"

cc2.add()

else:

Warning("The points selected are collinear which does not define a plane.")

else:

Warning("The 3 points selected must not be collinear.")

if yes_or_no("Add additional construction circles?") == 0:

break

## end run_script() #########################################################

if __name__ == '__main__':

try:

run_script()

finally:

del run_script