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Old 09-09-2009, 03:45 AM
krimble krimble is offline
Join Date: Nov 2006
Location: Nijmegen
Posts: 63
screenshots using a loop

Hi all,

can somebody help me? I have troubles with my program.
I'm busy writing a small script which is basically a loop where an object rotates in after the rotation it has to make a screenshot of it and store it on the disk with the objects name and rotation degree.

The loop works perfectly it prints out what it has to save on the disk but it doesn't save (well it saves only the last screenshot).

Do I have to approach this differently?

Thanks for your help!

import viz



view = viz.get(viz.MAIN_VIEWPOINT)
view.translate(12.416062355041504, 4.3263897895812988, 0)

s = viz.add(r"scissors.wrl")
co = viz.add(r"canopener.ive")
c1 = viz.add(r"cubes_01.wrl")
c2 = viz.add(r"cubes_02.wrl")
c3 = viz.add(r"cubes_03.wrl")

objects = [s,co,c1,c2,c3]
objectStrings = ["scissors","canOpener","cubes01","cubes02","cubes03"]

for i in objects :

degreesY = [0,60,120,180,240,300]
degreesZ = [0,60,300]
degreesX = [0,180]

for obj in objects :
	if obj == s :
		object = objectStrings[0]
	elif obj == co :
		object = objectStrings[1]
	elif obj == c1 :
		object = objectStrings[2]
	elif obj == c2 :
		object = objectStrings[3]
	elif obj == c3 :
		object = objectStrings[4]
	for degree in range(0, len(degreesX)) :
		for i in range(0, len(degreesZ)) :
			for j in range(0, len(degreesY)) :
				obj.rotate(degreesX[degree], degreesY[j], degreesZ[i])
				viz.window.screenCapture('pictures\\' + object + '_' + str(degreesX[degree]) + '_' + str(degreesY[j]) + '_' + str(degreesZ[i]) + '.bmp')
				print "Created: " + object + "_" + str(degreesX[degree]) + "_" + str(degreesY[j]) + "_" + str(degreesZ[i]) + ".bmp"
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Old 09-09-2009, 12:12 PM
farshizzo farshizzo is offline
WorldViz Team Member
Join Date: Mar 2003
Posts: 2,849
You should use the viztask module to generate screenshots within a loop. Simply yield one frame in between screenshots and they should all be saved correctly. Here is a sample script:
import viz
import viztask

model = viz.add('vcc_female.cfg',pos=(0,1,3))

def ScreenShotTask():
	for x in range(10):
		#Rotate model
		#Request screen capture at end of frame
		#Wait for frame
		yield None
viztask.schedule( ScreenShotTask() )
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Old 09-14-2009, 02:20 AM
krimble krimble is offline
Join Date: Nov 2006
Location: Nijmegen
Posts: 63
Thank you so much, this saves a tons of time!
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