Processing 1.0 - Processing Discourse - if sentence and 'flags'

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Index › Programming Questions & Help › Syntax Questions › if sentence and 'flags'

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if sentence and 'flags' (Read 487 times)

annemarie

if sentence and 'flags'
Feb 8^th, 2006, 9:05am

Hi,

In my void draw() I have an if sentence, where I only want to generate a list of numbers once when the mouse is not pressed. Is there a way to set a flag in the if loop to stop random() from looping while the mouse is not pressed?

if(mousePressed==true) {
// the t-values are set to 0
tX = 0; tY = 0; tZ = 0;

} else {
for(int j=0; j<numParam; j++){
p[j] = random(1); // generate random numbers between 0 and 1 ONE
//TIME ONLY
}

}

rick.giles

Re: if sentence and 'flags'
Reply #1 - Feb 8^th, 2006, 11:44am

The following generates the list only once if initially the mouse is not pressed, and only once between mouse presses:

boolean isGenerated = false;
if(mousePressed) {
// the t-values are set to 0
tX = 0; tY = 0; tZ = 0;
isGenerated = false;
}
else if (!isGenerated) {
for(int j=0; j<numParam; j++){
p[j] = random(1);
}
isGenerated = true;
}

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