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  #1  
Old 07-30-2009, 08:50 AM
ptjt255 ptjt255 is offline
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Join Date: Oct 2008
Posts: 24
Question Semi-circle array containing target and distractor objects

Hi,

I wonder if someone can help me, I am trying to set up a semi-circle array of positions on the left hand side of the screen, depending on how many distractors are selected (e.g. either 2, 4, 6 or 8) each position should contain one target object and the rest distractors, these should be randomised. I then want the target position to be a hotspot. But at this stage I'm having trouble just getting an array of positions where I want them with the correct objects in them.

Any help would be hugely appreciated.

Thank you.

Code:
import viz
import viztask
import random
viz.go()

Z_dist = -5
#viz.move(0,0,Z_dist)
viz.MainView.move(0.5,0,-10)

# Add distractor and target objects
ballsize = [2.0,2.0,2.0,1.0,1.0,1.0]

# Distractor ball
distractor = viz.add('soccerball.ive')
distractor.setScale(ballsize[0],ballsize[1],2)
distractor.addAction(vizact.spin(0,1,0,100))

# Target Ball
target = viz.add('ball.wrl')
target.setScale(ballsize[3],ballsize[4],1)
target.addAction(vizact.spin(0,1,0,100))

# Set up zones for the objects to appear on the screen
choice = ['2', '4', '6', '8']
select  = viz.choose('How many distractors?', choice)

#make a list with the objects in it
objects = [distractor,target]

# keep 2 positions in an array
pos = [[-1.0,0.0,Z_dist],[-1.0,0.5,Z_dist],[-2.0,1.0,Z_dist],[-1.0,1.5,Z_dist],[-1.0,2.0,Z_dist],[-1.0,2.5,Z_dist],[-1.0,3.0,Z_dist],[-1.0,3.5,Z_dist]]

rand_positions = []

def sceneOn(num):
	global rand_positions
	positions = [0,1,2,3,4,5,6,7]
	if select == 0:

		#set objects to 2 different random positions
		rand_positions = random.sample(positions,2)

		objects[0].setPosition(pos[rand_positions[0]])
		objects[1].setPosition(pos[rand_positions[1]])

	if select == 1:

		#set objects to 4 different random positions
		rand_positions = random.sample(positions,4)
		
		objects[0].setPosition(pos[rand_positions[0]])
		objects[0].setPosition(pos[rand_positions[1]])
		objects[0].setPosition(pos[rand_positions[2]])
		objects[1].setPosition(pos[rand_positions[3]])

	if select == 2:

		#set objects to 4 different random positions
		rand_positions = random.sample(positions,6)
		
		objects[0].setPosition(pos[rand_positions[0]])
		objects[0].setPosition(pos[rand_positions[1]])
		objects[0].setPosition(pos[rand_positions[2]])
		objects[0].setPosition(pos[rand_positions[3]])
		objects[0].setPosition(pos[rand_positions[4]])
		objects[1].setPosition(pos[rand_positions[5]])
		
	if select == 3:
		rand_positions = random.sample(positions,8)
		
		objects[0].setPosition(pos[rand_positions[0]])
		objects[0].setPosition(pos[rand_positions[1]])
		objects[0].setPosition(pos[rand_positions[2]])
		objects[0].setPosition(pos[rand_positions[3]])
		objects[0].setPosition(pos[rand_positions[4]])
		objects[0].setPosition(pos[rand_positions[5]])
		objects[0].setPosition(pos[rand_positions[6]])
		objects[1].setPosition(pos[rand_positions[7]])

sceneOn(1)
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  #2  
Old 08-03-2009, 05:51 PM
farshizzo farshizzo is offline
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Join Date: Mar 2003
Posts: 2,849
Your script was only creating 2 object, even when more than 2 distractors were selected. I modified your script to dynamically create the objects based on the number of distractors. I also modified the sceneOn function to be more general in positioning the objects.

I'm still not sure what you mean by placing the objects in a semi-circle. The list of positions you have pretty much places all the objects in a vertical line.

Anyway, here's the modified script:
Code:
import viz
import viztask
import random
viz.go()

Z_dist = -5
#viz.move(0,0,Z_dist)
viz.MainView.move(0.5,0,-10)

# Add distractor and target objects
ballsize = [2.0,2.0,2.0,1.0,1.0,1.0]

# Set up zones for the objects to appear on the screen
choice = ['2', '4', '6', '8']
select  = viz.choose('How many distractors?', choice)
numDistractors = int(choice[select])

#make a list with the objects in it
objects = []

# Distractor ball
for x in range(numDistractors-1):
	distractor = viz.add('soccerball.ive')
	distractor.setScale(ballsize[0],ballsize[1],2)
	distractor.addAction(vizact.spin(0,1,0,100))
	objects.append(distractor)

# Target Ball
target = viz.add('ball.wrl')
target.setScale(ballsize[3],ballsize[4],1)
target.addAction(vizact.spin(0,1,0,100))
objects.append(target)

# keep 2 positions in an array
pos = [[-1.0,0.0,Z_dist],[-1.0,0.5,Z_dist],[-2.0,1.0,Z_dist],[-1.0,1.5,Z_dist],[-1.0,2.0,Z_dist],[-1.0,2.5,Z_dist],[-1.0,3.0,Z_dist],[-1.0,3.5,Z_dist]]

def sceneOn(num):
	
	# Get random sample of positions
	rand_positions = random.sample(pos,numDistractors)
	
	# Apply positions to objects
	for p,o in zip(rand_positions,objects):
		o.setPosition(p)

sceneOn(1)
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  #3  
Old 08-04-2009, 04:06 AM
ptjt255 ptjt255 is offline
Member
 
Join Date: Oct 2008
Posts: 24
Thanks very much for your reply. I have been working hard on this code and it is now completely different from when I posted my initial question. Please see below.

I am having some problems which I would really appreciate help with:

1. how do I stop the avatar going out of the screen?
2. when the avatar's right arm hits the target, I want the avatar to do something e.g. dance, if the avatars right arm hits a distractor then it should something else, e.g. ball should change colour - I have tried setting this up using collisions and hotspots and can't get either to work?
3. I still haven't managed to get the objects in a semi-circle so that they are all equidistant from the avatar start position

Any help would be huegly appreciated. Sorry the code is such a mess, any help with tidying it up would also be greatly appreciated.

Thank you.

Code:
import viz
import viztask
import random
import vizjoy
viz.go()

def createlabel():
	global trialNumber, time, xPosition
#Create background quad for labels
	viz.startlayer(viz.QUADS)
	viz.vertexcolor(0,0.2,0)
	viz.vertex(0,0,0)
	viz.vertex(0,0.05,0)
	viz.vertex(0.20,0.05,0)
	viz.vertex(0.205,0,0)
	InfoQuad = viz.endlayer(viz.SCREEN)
	InfoQuad.draworder(30)
	InfoQuad.disable(viz.DEPTH_WRITE)
	InfoQuad.alpha(0.5)
	InfoQuad.translate(1-0.20,0)
#Create label for trial number
	trialNumber = InfoQuad.add(viz.TEXT3D,'0')
	trialNumber.scale(0.3,0.3,1)
	trialNumber.translate(0.01,0.02)
	trialNumber.font('times.ttf')
	trialNumber.color(viz.GREEN)
	trialNumber.draworder(31)
	trialNumber.disable(viz.LIGHTING)
	trialNumber.alignment(viz.TEXT_LEFT_CENTER)
#Create label for nv 
	time = InfoQuad.add(viz.TEXT3D,'0')
	time.scale(0.3,0.3,1)
	time.translate(0.04,0.02)
	time.font('times.ttf')
	time.color(viz.GREEN)
	time.draworder(31)
	time.disable(viz.LIGHTING)
	time.alignment(viz.TEXT_LEFT_CENTER)
#Create label for reversals
	xPosition = InfoQuad.add(viz.TEXT3D,'0')
	xPosition.scale(0.3,0.3,1)
	xPosition.translate(0.08,0.02)
	xPosition.font('times.ttf')
	xPosition.color(viz.GREEN)
	xPosition.draworder(31)
	xPosition.disable(viz.LIGHTING)
	xPosition.alignment(viz.TEXT_LEFT_CENTER)

createlabel()

joystick = vizjoy.add()
viz.mouse(viz.OFF)
viz.mouse.setTrap(viz.ON)
#viz.mouse.setVisible(viz.OFF)

Z_dist = -5
viz.MainView.move(0.5,0,-10)

filename = viz.input('Input data file name')
file = filename + 'T1StaticObjects' + '.txt'
print 'Filename: ', file

#viz.window.setSize(-1)  # set to full size

# Add distractor and target objects
ballsize = [2.0,2.0,2.0]
# Distractor ball
distractor = viz.add('soccerball.ive')

distractorClone1 = distractor.clone() #Copy the object
distractorClone1.setScale(ballsize[0],ballsize[1],2)
distractorClone1.addAction(vizact.spin(0,1,0,100))

distractorClone2 = distractor.clone() #Copy the object
distractorClone2.setScale(ballsize[0],ballsize[1],2)
distractorClone2.addAction(vizact.spin(0,1,0,100))

distractorClone3 = distractor.clone() #Copy the object
distractorClone3.setScale(ballsize[0],ballsize[1],2)
distractorClone3.addAction(vizact.spin(0,1,0,100))

distractorClone4 = distractor.clone() #Copy the object
distractorClone4.setScale(ballsize[0],ballsize[1],2)
distractorClone4.addAction(vizact.spin(0,1,0,100))

distractorClone5 = distractor.clone() #Copy the object
distractorClone5.setScale(ballsize[0],ballsize[1],2)
distractorClone5.addAction(vizact.spin(0,1,0,100))
# Target Ball
target = viz.add('soccerball.ive')
target.setScale(ballsize[0],ballsize[1],2)
target.addAction(vizact.spin(0,-1,0,100))

pos = [[-1.5,1.5,Z_dist],[-1.5,2.5,Z_dist]]
pos1 = [[-1.5,0.75,Z_dist],[-1.5,1.5,Z_dist],[-1.5,2.25,Z_dist],[-1.5,3.0,Z_dist]]
pos2 = [[-1.5,0.5,Z_dist],[-1.5,1.0,Z_dist],[-1.5,1.5,Z_dist],[-1.5,2.0,Z_dist],[-1.5,2.5,Z_dist],[-1.5,3.0,Z_dist]]
objects = [target,distractorClone1,distractorClone2,distractorClone3,distractorClone4,distractorClone5]

# Set up zones for the objects to appear on the screen
choice = ['1', '3', '5']
select  = viz.choose('How many distractors?', choice)

def sceneOn():
	global target_position,rand_pos,Rotation
	if select == 0:		
		# set objects to 2 random positions
		rand_pos = random.sample(pos,2)
		objects[0].setPosition(rand_pos[0])
		objects[1].setPosition(rand_pos[1])
		target_position = rand_pos[0]
		print 'target position:', target_position
	if select == 1:
		#set objects to 4 different random positions
		rand_pos = random.sample(pos1,4)		
		objects[0].setPosition(rand_pos[0])
		objects[1].setPosition(rand_pos[1])
		objects[2].setPosition(rand_pos[2])
		objects[3].setPosition(rand_pos[3])
		target_position = rand_pos[0]
		print 'target position:', target_position
	if select == 2:
		#set objects to 6 different random positions
		rand_pos = random.sample(pos2,6)		
		objects[0].setPosition(rand_pos[0])
		objects[1].setPosition(rand_pos[1])
		objects[2].setPosition(rand_pos[2])
		objects[3].setPosition(rand_pos[3])
		objects[4].setPosition(rand_pos[4])
		objects[5].setPosition(rand_pos[5])
		target_position = rand_pos[0]
		print 'target position:', target_position

# Set up male and female avatars

choice2 = ['male', 'female']
select2 = viz.choose('Gender of participant?', choice2)

if select2 == 0:
	avatar = viz.add('vcc_male.cfg')
if select2 == 1:
	avatar = viz.add('vcc_female.cfg')

avatar.lookat(-10, 0, -10)
avatar.state(1)

import time

def position_loop():
	global pos_inc, x, y, Rotation, start_position, target_position, rand_pos
	tinc = 1/500
	pos_inc = [0,0]
	start_position = (3.0, 1.0,Z_dist)
	start_time = time.time()
	elapsed_time = time.time() - start_time
	total_reps = 10
	def position_timer(num):
		global pos_inc, start_position, target_position,Rotation
		position = joystick.getPosition()
		Rotation = joystick.getRotation()  
		pos_inc[0] = pos_inc[0] + position[0]/50
		pos_inc[1] = pos_inc[1] + position[1]/50
		x = start_position[0]+pos_inc[0]
		y = start_position[1]+pos_inc[1]
		avatar.setPosition(x,y,Z_dist)
		if  Rotation > 1:
			elapsed_time = time.time() - start_time
			#print 'Elapsed Time: ', elapsed_time, 'X Position: ', x, 'Y Position: ', y #Y',"%.2f, %.2f, %.2f" % (elapsed_time,x,y)
	
			SaveData(select, select2, elapsed_time, x, y)
			
	viz.callback(viz.TIMER_EVENT,position_timer)
	viz.starttimer(1,tinc,viz.FOREVER)

def experiment():
	global pos_inc, x, y, Rotation, start_position, target_position, select, select2, elapsed_time,rand_pos
	#updatelabel(0,0,0)
	total_reps = 10
	for i in range (total_reps):
		print total_reps
		yield viztask.waitKeyDown(' ')
		position_loop()
		#Ready = viz.ask('Are You Ready?')
		#yield viztask.waitKeyDown(' ')
		yield viztask.waitMouseDown(viz.MOUSEBUTTON_LEFT)
		avatar.lookat(-10, 0, -5)
		sceneOn()
		avatar.state(2)
		armBone = avatar.getBone('Bip01 R UpperArm')
		# Don't move the bone with built-in animations
		armBone.lock()
		# Raise arm
		armBone.setEuler(0, 0, -70)

	
	#updatelabel(tr,round(x,1), round(elapsed_time),1)
	
#def updatelabel(tr,x,elapsed_time):
#	global trialNumber, time, xPosition
#	trialNumber.message(str(tr))
#	time.message(str(elapsed_time))
#	xPosition.message(str(x))

import vizinfo

# Define a function that saves data
file = open(filename + 'T1StaticObjects', 'w')

def SaveData(a,b,c,d,e):
# Create the output string
	out = str(a) + '\t' + str(b) + '\t' + str(c) + '\t' + str(d) + '\t' + str(e) + '\n'          
	out_headings = 'Distractor Number' + '\t' + 'Avatar' + '\t' + 'Elapsed Time' + '\t' + 'x Position' + '\t' + 'y Position' + '\t' 
	if a == 0:
		file.write (out_headings)
# Write the string to the output file
	file.write(out)
# Makes sure the file data is really written to the harddrive
	file.flush()

viztask.schedule(experiment())
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  #4  
Old 08-04-2009, 04:09 AM
ptjt255 ptjt255 is offline
Member
 
Join Date: Oct 2008
Posts: 24
Sorry, forgot to mention there is also a ball in position 0,0 which I can't seem to get rid of.

Thanks again.
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