How to make an image appear in different locations

Question

ss 2022-7-12

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1758010-how-to-make-an-image-appear-in-different-locations

评论： Rena Berman 2022-11-1

I want to do this , can someone help please,

expl: a ball (or an image) appears in random locations on the screen, when it appears(each time in different place), the user must click with the mouse , when he click the image disapear

thank you for your help

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Rik 2022-8-26

Deleted thread:

How to make an image appear in different locations

I want to do this , can someone help please,

expl: a ball (or an image) appears in random locations on the screen, when it appears(each time in different place), the user must click with the mouse , when he click the image disapear

thank you for your help

OP on 12 Jul 2022

Thank you for your answer,

when the image is displayed, how can the user press to the mouse to disappears ?

OP on 13 Jul 2022

it's an image jpg , i want to diplayed in different places each time, when the user see it , he click with the mouse

OP on 27 Jul 2022 at 7:45

my problem is i want to identify the position of the mouse click (when the user click to the image ) and the time when he click if it's possible

Rena Berman 2022-11-1

(Answers Dev) Restored edit

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Answer 1

Jonas 2022-7-12

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1758010-how-to-make-an-image-appear-in-different-locations#answer_1005285

编辑：Jonas 2022-7-12

在 MATLAB Online 中打开

you can try this raw code, how often the image can change the position is defined in the function

close all;
clear all;
im=imread('peppers.png');
width=0.2;
height=0.3;
fig=figure('Visible','off'); im=imshow(im,'Border','tight'); im.HitTest='off';
fig.ButtonDownFcn=@(src,~) handleClick(src,width,height);
set(fig,'Units','normalized','Position',[0.4 0.4 width height],'MenuBar','none','NumberTitle','off','Visible','on');
set(gca,'Units','normalized','InnerPosition',[0 0 1 1]);
function handleClick(src,width,height)
    persistent howManyTimes;
    
    if isempty(howManyTimes)
        howManyTimes=10;
    end
    if howManyTimes>0
        newX=(1-width)*randi([0 100])/100;
        newY=(1-height)*randi([0 100])/100;
        src.Position=[newX newY width height];
        howManyTimes=howManyTimes-1;
    else
        close(src);
    end
end

condensed version:

close all;
clear all;
im=imread('peppers.png');
width=0.2;
height=0.3;
fig=figure('Visible','off'); % hide window first
im=imshow(im,'Border','tight'); im.HitTest='off'; % plot and interpret klick on th eimage as click on the figure
fig.ButtonDownFcn=@(src,~) handleClick(src,width,height); % set action on button click
set(fig,'Units','normalized','Position',[0.4 0.4 width height],'Visible','on'); % edit position of figure and set visible
function handleClick(src,width,height)
    persistent howManyTimes;
    
    if isempty(howManyTimes)
        howManyTimes=10;
    end
    if howManyTimes>0
        newX=(1-width)*randi([0 100])/100; % create random x position with 101 possible values between 0 and (1-width)
        newY=(1-height)*randi([0 100])/100; % create random y position with 101 possible values between 0 and (1-height)
        src.Position=[newX newY width height];
        howManyTimes=howManyTimes-1;
    else
        close(src); % close window if we reached the howManyTimes==0
    end
end