Help on Matrix falling rain code

Question

Ryan 2015-5-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/218553-help-on-matrix-falling-rain-code

编辑： Ryan 2015-5-25

Hey guys so I got into my head to try to recreate the the falling rain effect from the Matrix movies in Matlab.

Here's what I've got so far

clear all
close all
clc
cmdWinDoc = com.mathworks.mde.cmdwin.CmdWinDocument.getInstance;
listeners = cmdWinDoc.getDocumentListeners;
for i = 3:4
    jTextArea = listeners(i);
    jTextArea.setBackground(java.awt.Color.black);
    jTextArea.setBackground(java.awt.Color(0,0,0));
    set(jTextArea,'Background','black');
    set(jTextArea,'Background',[0,0,0]);
    jTextArea.setForeground(java.awt.Color.green);
    jTextArea.setForeground(java.awt.Color(0,1,0));
    set(jTextArea,'Foreground','green');
    set(jTextArea,'Foreground',[0,1,0]);
end
for j = 1:10000
  A9=['A':'Z' '0':'9' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ';];
  Data=zeros(length(A9),105);
  for k=1:size(Data,2)
      Data(:,k)=randperm(length(A9));
  end
  Data=A9(Data)
end
for i = 3:4
    jTextArea = listeners(i);
    jTextArea.setBackground(java.awt.Color.white);
    jTextArea.setBackground(java.awt.Color(1,1,1));
    set(jTextArea,'Background','white');
    set(jTextArea,'Background',[1,1,1]);
    jTextArea.setForeground(java.awt.Color.black);
    jTextArea.setForeground(java.awt.Color(0,0,0));
    set(jTextArea,'Foreground','black');
    set(jTextArea,'Foreground',[0,0,0]);
end
clc

I would want to change that central for-loop to a while-loop, but I was having issues trying to figure out how to leave the while loop with a keypress.

I'm wondering if anyone has any better ideas for how to achieve this falling rain effect as right now this code more spams random letters than having them rain.