CODEWITHSUNDEEP
c#unity-game-enginecolorsgradient
user6552697
user6552697

Reputation:

Making a gradient and change colors based on that gradient in Unity3D - C# Script

I'd like to be able to create a color gradient bar using C# script too look like this: enter image description here

Then I'd like to say if my number is in range (0.8 - 1.0) make my object that shade of red that's shown in the gradient.

I'm not sure how to approach this. For now I just have 2 solid colors. I have: 

myGameObject.GameComponent<Renderer>().material.color = Color.red;

for positive values and blue for negative values.

Any help would be appreciated.

Upvotes: 5

Views: 22937

Answers (1)

Douglas Dwyer
Douglas Dwyer

Reputation: 612

See Unity's Gradient class. You can create a list of GradientColorKey[] and GradientAlphaKey - and set each color/time value. For your purpose, I would use:

    Gradient g = new Gradient();
    GradientColorKey[] gck = new GradientColorKey[2];
    GradientAlphaKey[] gak = new GradientAlphaKey[2];
    gck[0].color = Color.red;
    gck[0].time = 1.0F;
    gck[1].color = Color.blue;
    gck[1].time = -1.0F;
    gak[0].alpha = 0.0F;
    gak[0].time = 1.0F;
    gak[1].alpha = 0.0F;
    gak[1].time = -1.0F;
    g.SetKeys(gck, gak);
    myGameObject.GameComponent<Renderer>().material.color = g.Evaluate(1);

This will get you the Color that corresponds to the number in g.Evaluate() so you should change the time parameter in g.Evaluate(1) to a variable or whatever you want. If you're getting transparent or black textures, try changing the alpha values in gak. Hope this was helpful :)

Upvotes: 6

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