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BEC_DrawRiskCost.m
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BEC_DrawRiskCost.m
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function [timings] = BEC_DrawRiskCost(window,exp_settings,drawchoice)
% This function is part of the OTG toolbox, used for generating and presenting a battery of economic choices.
% Visualize the wheel-of-fortune, the visualization of the risk cost from the BECHAMEL toolbox.
% This function is an auxiliary function to BEC_DrawChoiceScreen, which draws the choice to be visualized in the
% idiosyncracies of Psychtoolbox.
% Note that it works slightly differently compared to the other choice types, in the sense that there is an animation in
% case the screen is in "Example" mode. So, all the screen's texts and rects, in addition to the cost, must also be
% redrawn. They are defined in the preceding function "DrawChoiceScreen".
%Identify the main rects (defined before)
[Xsize, Ysize] = Screen('WindowSize', window); screensize = [Xsize Ysize Xsize Ysize];
if drawchoice.example
rect_leftbox = exp_settings.choicescreen.costbox_left_example .* screensize;
rect_rightbox = exp_settings.choicescreen.costbox_right_example .* screensize;
else
rect_leftbox = exp_settings.choicescreen.costbox_left .* screensize;
rect_rightbox = exp_settings.choicescreen.costbox_right .* screensize;
end
text_cost_left = drawchoice.rects.text_cost_left;
text_cost_right = drawchoice.rects.text_cost_right;
text_reward_left = drawchoice.rects.text_reward_left;
text_reward_right = drawchoice.rects.text_reward_right;
confirm_left = drawchoice.rects.confirm_left;
confirm_right = drawchoice.rects.confirm_right;
%Draw two wheels of fortune
%Prepare to animate the lottery (in example trials)
if ~isempty(drawchoice.confirmation) && drawchoice.example == 1
animation = 1;
if (strcmp(drawchoice.confirmation,'left') && drawchoice.costleft ~= 0) || ...
(strcmp(drawchoice.confirmation,'right') && drawchoice.costright ~= 0)
%Lottery
riskangle = max([drawchoice.costleft drawchoice.costright]./100) * 360;
if rand > max([drawchoice.costleft drawchoice.costright]./100) % Win: pin lands on probability arc
win = 1;
min_a = 3; %minimum start angle
max_a = 360-riskangle-3; %maximum start angle
finalangle = round((max_a - min_a) * rand + min_a); %randomly between min and max start angle
else; win = 0; %loss: pin on risk
min_a = 360-riskangle+3; %minimum start angle
max_a = 360-3; %maximum start angle
finalangle = round((max_a - min_a) * rand + min_a); %randomly between min and max start angle
end
angle_level = ceil(finalangle/360*10); %Which of the 10 jumps in a circle is it
spins = ceil(2*rand+3); %no. of spins, between 3 and 5
jumpsize = (spins*360+finalangle)/(spins*20+angle_level);
loopangles = 0:jumpsize:(spins*360+finalangle);
else
loopangles = 0;
end
color_proba_arc = exp_settings.choicescreen.probabilitycolor;
else; animation = 0; %Before the wheel is on screen
loopangles = 0;
color_proba_arc = exp_settings.choicescreen.probabilitycolor;
end
%Loop through the angles of the wheel (for animation; otherwise: fixed)
anglecount = 1;
if animation && length(loopangles) > 1; waittime = [0 0]; end %waittime = [0.05 0.05] to slow down the animation
while anglecount <= length(loopangles)
angle = loopangles(anglecount);
for side = 1:2
if side == 1 %Left wheel dimensions
wheelradius = diff(rect_leftbox([1 3]))/2; %The radius is determined by the width of the cost box
wheelrect = [mean(rect_leftbox([1 3]))-wheelradius mean(rect_leftbox([2 4]))-wheelradius mean(rect_leftbox([1 3]))+wheelradius mean(rect_leftbox([2 4]))+wheelradius];
riskangle = drawchoice.costleft/100*360;
else %Right wheel dimensions
wheelradius = diff(rect_rightbox([1 3]))/2; %The radius is determined by the width of the cost box
wheelrect = [mean(rect_rightbox([1 3]))-wheelradius mean(rect_rightbox([2 4]))-wheelradius mean(rect_rightbox([1 3]))+wheelradius mean(rect_rightbox([2 4]))+wheelradius];
riskangle = drawchoice.costright/100*360;
end
%Fill risk arc
if riskangle ~= 0
startAngle_risk = angle;
arcAngle_risk = riskangle;
Screen('FillArc',window,exp_settings.choicescreen.fillcolor,wheelrect,startAngle_risk,arcAngle_risk);
end
%Fill probability arcs
startAngle_proba = angle+riskangle;
arcAngle_proba = 360-riskangle;
Screen('FillArc',window,color_proba_arc,wheelrect,startAngle_proba,arcAngle_proba);
%Draw wheel
Screen('FrameArc',window,exp_settings.choicescreen.linecolor,wheelrect,0,360,exp_settings.choicescreen.linewidth);
%Draw pointer
if animation && riskangle ~= 0
points = [mean(wheelrect([1 3])) wheelrect(2); %pointer tip
mean(wheelrect([1 3]))-1/6*wheelradius wheelrect(2)-1/3*wheelradius;
mean(wheelrect([1 3]))+1/6*wheelradius wheelrect(2)-1/3*wheelradius];
Screen('FillPoly', window, exp_settings.colors.orange, points);
end
%Text trial features
%Title
if isempty(drawchoice.confirmation) && drawchoice.example == 1
Screen('TextSize',window,exp_settings.font.TitleFontSize);
DrawFormattedText(window, drawchoice.titletext, 'center', exp_settings.choicescreen.title_y*Ysize, exp_settings.colors.white);
end
%Draw cost and reward text
Screen('TextSize',window,exp_settings.font.RewardFontSize); %Same as CostFontSize
losscolor = [num2str(exp_settings.font.LossFontColor(1)/255) ',' num2str(exp_settings.font.LossFontColor(2)/255) ',' num2str(exp_settings.font.LossFontColor(3)/255)];
RewardText_left = [drawchoice.rewardlefttext '\n<color=' losscolor '>' drawchoice.losslefttext];
RewardText_right = [drawchoice.rewardrighttext '\n<color=' losscolor '>' drawchoice.lossrighttext];
DrawFormattedText2(RewardText_left,'win',window,'sx',mean(text_reward_left([1,3])).*Xsize,'xalign','center','xlayout','center','sy',mean(text_reward_left([2,4])).*Ysize,'yalign','center','baseColor',exp_settings.font.ChoiceFontColor);
DrawFormattedText2(RewardText_right,'win',window,'sx',mean(text_reward_right([1,3])).*Xsize,'xalign','center','xlayout','center','sy',mean(text_reward_right([2,4])).*Ysize,'yalign','center','baseColor',exp_settings.font.ChoiceFontColor);
%Cost (example only)
if drawchoice.example == 1
DrawFormattedText(window, drawchoice.costlefttext, 'center', 'center', exp_settings.font.ChoiceFontColor, [], [], [], [], [], text_cost_left.*screensize);
DrawFormattedText(window, drawchoice.costrighttext, 'center', 'center', exp_settings.font.ChoiceFontColor, [], [], [], [], [], text_cost_right.*screensize);
end
%Confirmation rectangle
if ~isempty(drawchoice.confirmation)
if strcmp(drawchoice.confirmation,'left'); confirm_rect = confirm_left;
elseif strcmp(drawchoice.confirmation,'right'); confirm_rect = confirm_right;
end
if drawchoice.example; confirm_rect = (confirm_rect.*screensize)'; end
Screen('FrameRect',window,exp_settings.colors.white,confirm_rect,3); %Note, confirm_rect has already been converted to pixels!
end
%Center question mark or fixation cross
Screen('TextSize',window,exp_settings.font.FixationFontSize);
if drawchoice.example == 1
DrawFormattedText(window, 'ou', 'center', 'center', exp_settings.font.ChoiceFontColor);
else
if isempty(drawchoice.confirmation) %Before confirming, write "+" until minimum response time, and "?" once the choice may be entered.
DrawFormattedText(window, drawchoice.centerscreen, 'center', 'center', exp_settings.colors.white);
else
DrawFormattedText(window, '+', 'center', 'center', exp_settings.colors.white);
end
end
%Text outcome
sidenames = {'left','right'};
if animation && length(loopangles) == 1; waittime = [3 3];
end
if animation && strcmp(sidenames{side},drawchoice.confirmation)
if angle == loopangles(end) && riskangle ~= 0 && win == 1
conf_text = ['Vous avez gagné la loterie. Vous recevrez ' num2str(exp_settings.MaxReward) ' euros.'];
outcome_color = exp_settings.colors.green;
waittime(side) = 3;
elseif angle == loopangles(end) && riskangle ~= 0 && win == 0
conf_text = ['Vous avez perdu la loterie. Vous perdez ' num2str(exp_settings.RiskLoss) ' euros.'];
outcome_color = exp_settings.colors.red;
waittime(side) = 3;
elseif riskangle == 0
SSReward = min([drawchoice.rewardleft drawchoice.rewardright]);
if SSReward == 1; SSRewardText = sprintf('%.2f euro', round(SSReward, 1));
else; SSRewardText = sprintf('%.2f euros', round(SSReward, 1));
end
conf_text = ['Vous avez choisi l''option certaine. Vous recevrez ' SSRewardText '.'];
outcome_color = exp_settings.colors.white;
waittime(side) = 3;
else
conf_text = [];
end
if ~isempty(conf_text)
Screen('TextSize',window,exp_settings.font.TitleFontSize);
DrawFormattedText(window,conf_text,'center',exp_settings.choicescreen.title_y*Ysize,outcome_color);
end
end
end %for side
%Flip
timestamp = Screen('Flip',window);
if animation
pause(max(waittime));
else
timings = BEC_Timekeeping(drawchoice.event,drawchoice.plugins,timestamp);
end
anglecount = anglecount+1;
end %while anglecount
%Timing after animation
if animation
timings = BEC_Timekeeping(drawchoice.event,drawchoice.plugins,timestamp);
end
end