Colour Question

Ad Mulders · **Posted:** October 13th, 2018, 7:02 am

What am i doing wrong?

I have made a text input where i need to enter an RGB code to change colours of a Polygon.
The input box variable is called: RGBcode
The polygon is called Polygon
I made a button to perform this action:
Polygon.SetFillColour(RGB(RGBcode))
The only color that shows up is Red, the first of the 3 values. When i change the values only the red changes.

When i set an RGB code instead of the variable in the script, the right color shows up.
What am i doing wrong? Normaly i can set a variable in the code without a problem.

To solve the problem, I used the following code:
Polygon.SetFillColour(RGBcode)
in this case the variable works, but only with HEX codes, but they are not as user-friendly as a RGB code

Here you can find an example of the problem:
http://csnmedia.nl/opus/

Kind Regards,
Ad Mulders

mackavi · **Posted:** October 13th, 2018, 5:36 pm

I think it needs all three values in a list: Try:

Code:

myColoursArray = RGBcode.split(',')
Polygon.SetFillColour(RGB(myColoursArray[0],myColoursArray[1],myColoursArray[2]))

Regards,

</mack>

Ad Mulders · **Posted:** October 13th, 2018, 8:18 pm

Thanks Mack,
Your script work. Thank you. I am curious, why do not I find this code in the help file and what went wrong?

Kind Regards,
Ad Mulders

mackavi · **Posted:** October 14th, 2018, 12:54 pm

Hi Ad,

If it's any help - it's not just you and it's not just Opus help. I frequently use help manuals and even commercial books where it seems they have forgot to tell you some key piece of information to make it work.

And I didn't actually know the answer as I never use RGB, I always use the hex reference. What made me think the idea would work, was if you view it as a standalone function it would look like this:

Code:

function RGB(x,y,z){
//do something here
}

The function would need you to pass three independent parameters. The value you put into the text box was just one parameter a string such as "125,243,24". This means on the x parameter in the RGB function received all information - it received the whole string.

What you actually needed was three Text Input Boxes - one for each parameter:

Code:

Polygon.SetFillColour(RGB(myTextInputOne, myTextInputTwo,myTextInputThree))

My little bit of code just did this automatically for you by taking the value entered into a single Text Input box and splitting it up so it acted like three parameters where being passed.

</mack>

Ad Mulders · **Posted:** October 15th, 2018, 4:26 pm

Thanks Mack. Clear explanation.

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