Gradient String to Color Type Conversion in C# Component

I am trying to convert a String type to a Color type in Grasshopper using the C# component.

The input is a list of Strings in this format:

e.g. 255, 255, 255

I would like to convert these values into a color object, and thus, I used a function in C# called System.Drawing.Color.FromArgb(int red, int green, int blue);

Attached is my script:

My main function is simply:

I am taking the list of strings, converting it to an array. For each index of the array, I am splitting the strings into three integers, and taking those three integers and converting them into a Color object using the FromArgb() method, which takes in three integers red, green, and blue, respectively.

My C# Scripting Component's input is set to List Access and the Type Hint is string.

The error I have been getting is this:

The script works when used in Visual Studio, however, does not work when I try to use it in Grasshopper. Could someone help me debug what the issue could be, and perhaps:

1. Suggest a better way than to use static methods to do the conversion

2. Rewrite this so I'm dealing with Lists instead of an Array.

Thank you for the help.

Replies to This Discussion

Permalink Reply by to] on December 9, 2013 at 9:12am

you can also just use a param color component for this without writing a c# component, are you working on something specific?

Permalink Reply by to] on December 9, 2013 at 9:48am

yes i mean this component

Permalink Reply by Thomas on December 9, 2013 at 10:12am

Hi!

This should work:

public static Color[] convertToColor(String[] stringArray)
{
var colorArray = new Color[stringArray.Length];

for (var i = 0; i < stringArray.Length; i++)
{
var splitString = stringArray[i].Split(',');
var splitInts = splitString.Select(item => int.Parse(item)).ToArray();

colorArray[i] = Color.FromArgb(splitInts[0], splitInts[1], splitInts[2]);
}

return colorArray;
}

Greetings!

RSS