Random Function and Decimal values

RacetotheMoon

I'm trying to have random colors assigned to an object, but I'm finding that's not possible due to the Random function not accepting decimal values and placing random(0,1) only chooses 0 or 1. This wouldn't be an issue if you could simply place an integer value for the Red, Green, and Blue values for the color of an object, instead we're left with equating the value you want for each RGB value as a decimal.

Anyway, my point being.. can anyone prove me wrong that the Random function does in fact accept decimal values and I'm just doing something wrong?

tatiang

You're not wrong, but there's an easy workaround:

Change Attribute self.color.Red to random(0,10)/10

gyroscope

@RacetotheMoon

Hi, the Random expression doesn't cater for decimal values; positive integer values only.

So for a solution of a generated random decimal, I suggest something like the following:

(it's probably more watertight to change a real attribute and then use that as the chosen random value) In this example, it'll be for three decimal places:

Change Attribute RandColR to Random(111,999)/1000
Change Attribute self.Color.Red to RandColR

Socks

You're not wrong, but there's an easy workaround:

Change Attribute self.color.Red to (0,10)/10

(0,10)/10 would only give you 1,000 colours out of a possible 16,777,216.

Change Attribute RandColR to Random(111,999)/1000

This equation clips off the bottom 11.1% of available colours - and at the top - it clips off pure white (not that anyone would notice the difference between .999 and 1).


Each colour channel is 8bit, the calculation should be: Change Attribute self.color.Red to random(0,255)/255

Socks

DP

tatiang

Sorry, I was just writing a generic Change Attribute self.Random to random(0,10)/10 to give the idea that you could generate decimals from 0 to 1, but then I threw in self.color.Red at the last moment to make it more relevant (and apparently, wrong!). Thanks.

Socks

Sorry, I was just writing a generic Change Attribute . . . .

Sorry is not good enough, the number gods will be angered, watch out for lightening storms over the next couple of days.

gyroscope

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Each colour channel is 8bit, the calculation should be: Change Attribute self.color.Red to (0,255)/255

Hi @Socks I understand your reasoning re: 0 to 255, but the value type required for the Color attributes in GSC is in the range of 0 to 1.

So @tatiang is correct in his example to generate in one decimal place, (albeit a limited amount of colours); mine is as close as you can get with three decimal places (actually, I've just thought, a bit closer at the zero end: Random(100,999)/1000 )

Socks

Hi @Socks I understand your reasoning re: 0 to 255, but the value type required for the Color attributes in GSC is in the range of 0 to 1.

Whoops, I missed the word 'random' out, my calculation should have read Change Attribute self.color.Red to random (0,255)/255.

tatiang is correct in his example to generate in one decimal place, (albeit a limited amount of colours); mine is as close as you can get with three decimal places (actually, I've just thought, a bit closer at the zero end: Random(100,999)/1000 )

Tatiang's method reduces the amount of colours the calculation generates from the available 16,777,216 to just 1,000.

Your new method loses the 'bottom' 10% of all colours as well as pure white at the 'top' (1,1,1).

Random(0,255)/255 will give you all 256 colours (8bit) for each channel (or 16,777,216 / 24bits) when applied to all three channels.

RacetotheMoon

Well done, Gents. Thanks for the knowledge. =D>

gyroscope

Hey @Socks, I see what you mean now... :-) I will flay my back immediately with a horsehair whip! Spot on, and worth remembering, thanks.

Socks

Hey @Socks, I see what you mean now... :-) I will flay my back immediately with a horsehair whip! Spot on, and worth remembering, thanks.

It's too late, your name is already on 'the list' right under Tatiang's, come the great math robot uprising of 2013 you will be sent to a regional reprogramming camp.

gyroscope

It's too late, your name is already on 'the list' right under Tatiang's, come the great math robot uprising of 2013 you will be sent to a regional reprogramming camp.

aaaaaaaah..............phooey. :o3

Socks

aaaaaaaah..............phooey. :o3

@gyroscope

Here's the maths in action:

http://www.mediafire.com/?bo8835830d9oy67

gyroscope

Hi @Socks that is Wow indeed! Thanks, I'm much impressed with that! :-)

Socks

Hi @Socks that is Wow indeed! Thanks, I'm much impressed with that! :-)

There's a second colour way set up (in actor 'B') which I prefer.

Takes you a bit more into the mid 1970s. : )

Like this: http://www.mediafire.com/?wmz323k94kr9z4d

tatiang

I never liked those other 16,776,216 colors. :P