added visualize example

ex/buckle.py

@@ -6,6 +6,18 @@ from pyframe3dd.frame3dd import write_frame3dd_file, read_lowest_mode, read_fram
 from pyframe3dd.util import magnitudes, close
 import subprocess
 
+def plot_connections(nodes,connect):
+    #for debug only, this is slow!
+    import matplotlib as mpl
+    from mpl_toolkits.mplot3d import Axes3D
+    import numpy as np
+    import matplotlib.pyplot as plt
+    fig = plt.figure()
+    ax = fig.gca(projection='3d')
+    for seg in connect:
+        ax.plot(nodes[seg,0], nodes[seg,1], nodes[seg,2], c='g')
+    plt.show()
+
 def run_frame3dd(args,nodes,global_args,beam_sets,constraints,loads):
 	write_frame3dd_file(nodes,global_args,beam_sets,constraints,loads)
 	cmd = ["frame3dd", "-i",global_args['frame3dd_filename']+'.csv']
@@ -85,7 +97,7 @@ def find_stability_threshold(args):
 
 if __name__ == '__main__':
 	parser = argparse.ArgumentParser()
-	parser.add_argument('-M','--mode',choices=('simulate','search'), required=True)
+	parser.add_argument('-M','--mode',choices=('simulate','search', 'visualize'), required=True)
 	parser.add_argument('-Q','--quiet',action='store_true',help='Whether to suppress frame3dd output')
 	parser.add_argument("-f","--force",  type=double, default=1, help="force to apply")
 	parser.add_argument("-fr","--force_res", type=double, default=.01, help="Final resolution of force for search mode")
@@ -112,6 +124,9 @@ if __name__ == '__main__':
 		res = run_simulation(args)
 		print "Fundamental frequency: %.3f Hz"%res['fundamental_frequency']
 		print "Stress: %.3f MPa"%(res['stress']/1e6)
+	elif args.mode=='visualize':
+		nodes,rods = build(args)
+		plot_connections(nodes,rods)
 	else:
 		assert(0) #should not be here