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-   -   Semi-circle array containing target and distractor objects (https://forum.worldviz.com/showthread.php?t=2188)

ptjt255 07-30-2009 08:50 AM
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)

farshizzo 08-03-2009 05:51 PM
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)

ptjt255 08-04-2009 04:06 AM
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())

ptjt255 08-04-2009 04:09 AM
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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