How do I set random values in processing that are in certain intervals
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For example, I'm trying to make it so when one of the circles goes off the edge of the screen, it resets it's X-coordinates to anywhere from -100,0 or 840,940. This is because I want it to move back onto the screen from another random location.
Is there a way to use the random function in processing like this?
The only way I could think of to get around this would be doing this:
//in my real program this would be taking place in a for loop parsing through an array
int = random(1,2);
if(x = 1){
posX[i] = random(-100,0);
}
else{
posX[i] = random(840,940);
}
But this would take extra space. I assume there is some way to just create random values within a certain interval.
processing
edited Nov 22 '18 at 6:58
Kevin Workman
34.4k54273
asked Nov 22 '18 at 4:41
user10487132user10487132
113
add a comment |
For example, I'm trying to make it so when one of the circles goes off the edge of the screen, it resets it's X-coordinates to anywhere from -100,0 or 840,940. This is because I want it to move back onto the screen from another random location.
Is there a way to use the random function in processing like this?
The only way I could think of to get around this would be doing this:
//in my real program this would be taking place in a for loop parsing through an array
int = random(1,2);
if(x = 1){
posX[i] = random(-100,0);
}
else{
posX[i] = random(840,940);
}
But this would take extra space. I assume there is some way to just create random values within a certain interval.
processing
edited Nov 22 '18 at 6:58
Kevin Workman
34.4k54273
asked Nov 22 '18 at 4:41
user10487132user10487132
113
add a comment |
For example, I'm trying to make it so when one of the circles goes off the edge of the screen, it resets it's X-coordinates to anywhere from -100,0 or 840,940. This is because I want it to move back onto the screen from another random location.
Is there a way to use the random function in processing like this?
The only way I could think of to get around this would be doing this:
//in my real program this would be taking place in a for loop parsing through an array
int = random(1,2);
if(x = 1){
posX[i] = random(-100,0);
}
else{
posX[i] = random(840,940);
}
But this would take extra space. I assume there is some way to just create random values within a certain interval.
processing
edited Nov 22 '18 at 6:58
Kevin Workman
34.4k54273
asked Nov 22 '18 at 4:41
user10487132user10487132
113
For example, I'm trying to make it so when one of the circles goes off the edge of the screen, it resets it's X-coordinates to anywhere from -100,0 or 840,940. This is because I want it to move back onto the screen from another random location.
Is there a way to use the random function in processing like this?
The only way I could think of to get around this would be doing this:
//in my real program this would be taking place in a for loop parsing through an array
int = random(1,2);
if(x = 1){
posX[i] = random(-100,0);
}
else{
posX[i] = random(840,940);
}
But this would take extra space. I assume there is some way to just create random values within a certain interval.
processing
processing
edited Nov 22 '18 at 6:58
Kevin Workman
34.4k54273
asked Nov 22 '18 at 4:41
user10487132user10487132
113
edited Nov 22 '18 at 6:58
Kevin Workman
34.4k54273
asked Nov 22 '18 at 4:41
user10487132user10487132
113
edited Nov 22 '18 at 6:58
Kevin Workman
34.4k54273
edited Nov 22 '18 at 6:58
Kevin Workman
34.4k54273
edited Nov 22 '18 at 6:58
Kevin Workman
34.4k54273
34.4k54273
asked Nov 22 '18 at 4:41
user10487132user10487132
113
asked Nov 22 '18 at 4:41
user10487132user10487132
113
asked Nov 22 '18 at 4:41
user10487132user10487132
113
113
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
What you have is basically the approach I would take. There are a few issues with your code: you're using = instead of ==, and you're comparing exactly 1 instead of a range. You probably want something like this instead:
float x = random(1);
if(x < .5){
myValue = random(-100, 0);
}
else{
myValue = random(840, 940);
}
One cool thing about programming is that you can make your own functions, like this:
float getValueFromRanges(float startOne, float endOne, float startTwo, float endTwo){
if(random(1) < .5){
return random(startOne, endOne);
}
else{
return random(startTwo, endTwo);
}
}
Then you could just call this function whenever you wanted a random value from those ranges:
float myValue = getValueFromRanges(-100, 0, 840, 940);
Or you could do this in one line of code using the ternary operator:
float myValue = random(1) < .5 ? random(-100, 0) : random(840, 940);
This last approach is not very readable, so I'd probably go with creating a function.
answered Nov 22 '18 at 6:58
Kevin WorkmanKevin Workman
34.4k54273
add a comment |
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1 Answer
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1 Answer
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active
oldest
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votes
What you have is basically the approach I would take. There are a few issues with your code: you're using = instead of ==, and you're comparing exactly 1 instead of a range. You probably want something like this instead:
float x = random(1);
if(x < .5){
myValue = random(-100, 0);
}
else{
myValue = random(840, 940);
}
One cool thing about programming is that you can make your own functions, like this:
float getValueFromRanges(float startOne, float endOne, float startTwo, float endTwo){
if(random(1) < .5){
return random(startOne, endOne);
}
else{
return random(startTwo, endTwo);
}
}
Then you could just call this function whenever you wanted a random value from those ranges:
float myValue = getValueFromRanges(-100, 0, 840, 940);
Or you could do this in one line of code using the ternary operator:
float myValue = random(1) < .5 ? random(-100, 0) : random(840, 940);
This last approach is not very readable, so I'd probably go with creating a function.
answered Nov 22 '18 at 6:58
Kevin WorkmanKevin Workman
34.4k54273
add a comment |
What you have is basically the approach I would take. There are a few issues with your code: you're using = instead of ==, and you're comparing exactly 1 instead of a range. You probably want something like this instead:
float x = random(1);
if(x < .5){
myValue = random(-100, 0);
}
else{
myValue = random(840, 940);
}
One cool thing about programming is that you can make your own functions, like this:
float getValueFromRanges(float startOne, float endOne, float startTwo, float endTwo){
if(random(1) < .5){
return random(startOne, endOne);
}
else{
return random(startTwo, endTwo);
}
}
Then you could just call this function whenever you wanted a random value from those ranges:
float myValue = getValueFromRanges(-100, 0, 840, 940);
Or you could do this in one line of code using the ternary operator:
float myValue = random(1) < .5 ? random(-100, 0) : random(840, 940);
This last approach is not very readable, so I'd probably go with creating a function.
answered Nov 22 '18 at 6:58
Kevin WorkmanKevin Workman
34.4k54273
add a comment |
What you have is basically the approach I would take. There are a few issues with your code: you're using = instead of ==, and you're comparing exactly 1 instead of a range. You probably want something like this instead:
float x = random(1);
if(x < .5){
myValue = random(-100, 0);
}
else{
myValue = random(840, 940);
}
One cool thing about programming is that you can make your own functions, like this:
float getValueFromRanges(float startOne, float endOne, float startTwo, float endTwo){
if(random(1) < .5){
return random(startOne, endOne);
}
else{
return random(startTwo, endTwo);
}
}
Then you could just call this function whenever you wanted a random value from those ranges:
float myValue = getValueFromRanges(-100, 0, 840, 940);
Or you could do this in one line of code using the ternary operator:
float myValue = random(1) < .5 ? random(-100, 0) : random(840, 940);
This last approach is not very readable, so I'd probably go with creating a function.
answered Nov 22 '18 at 6:58
Kevin WorkmanKevin Workman
34.4k54273
What you have is basically the approach I would take. There are a few issues with your code: you're using = instead of ==, and you're comparing exactly 1 instead of a range. You probably want something like this instead:
float x = random(1);
if(x < .5){
myValue = random(-100, 0);
}
else{
myValue = random(840, 940);
}
One cool thing about programming is that you can make your own functions, like this:
float getValueFromRanges(float startOne, float endOne, float startTwo, float endTwo){
if(random(1) < .5){
return random(startOne, endOne);
}
else{
return random(startTwo, endTwo);
}
}
Then you could just call this function whenever you wanted a random value from those ranges:
float myValue = getValueFromRanges(-100, 0, 840, 940);
Or you could do this in one line of code using the ternary operator:
float myValue = random(1) < .5 ? random(-100, 0) : random(840, 940);
This last approach is not very readable, so I'd probably go with creating a function.
answered Nov 22 '18 at 6:58
Kevin WorkmanKevin Workman
34.4k54273
answered Nov 22 '18 at 6:58
Kevin WorkmanKevin Workman
34.4k54273
answered Nov 22 '18 at 6:58
Kevin WorkmanKevin Workman
34.4k54273
answered Nov 22 '18 at 6:58
Kevin WorkmanKevin Workman
34.4k54273
34.4k54273
add a comment |
add a comment |
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