Messages

1

Support / Re: Extract only sprite pixels of an Atlas

« on: February 22, 2014, 11:50:11 pm »

Sorry for my broken english, workaround wasn't the wisest word to use.
Anyway thank you very much for you help!

2

Support / Re: Extract only sprite pixels of an Atlas

« on: February 22, 2014, 06:08:28 pm »

Thanks for the answer.
I've tried the uvs workaround before seeing your post... however the results I had in sprite definitions were "weird". My atlas is 1024x1024, my sprite is 27x27 and uvs given are :

• (0.0, 0.9)
[1] (0.0, 0.9)
[2] (0.0, 1.0)
[3] (0.0, 1.0)

That's why I didn't work too hard on that.
Anyway, do you plan to have that kind of feature in the next release? It could be super-handy to have that.

3

Support / Extract only sprite pixels of an Atlas

« on: February 21, 2014, 01:16:51 pm »

Hi,

I'd like to extract only the pixel informations used by the current sprite.
The idea would be to analyze colors used by a sprite, and loop through its pixels.
Unfortunately renderer.material.mainTexture returns only the atlas (1024x1024) for my 27x27 texture. GetPixels an iterating through all pixels of the atlas could be overkill. Is there a bettre way?

Thank you.

4

Support / Re: Color replacement in animations

« on: February 06, 2014, 09:14:21 am »

Just to be sure... I'll have to modify the current tk2d shader and add what I want to it in order to keep the functionalities... right? (I'm so scared by shaders)

5

Support / Re: Color replacement in animations

« on: February 06, 2014, 08:51:03 am »

A question came to me...

Wouldn't be more efficient to do the color replacement via shaders?
Do you think it could be possible / easy to work on shaders while using tk2d?

Thanks,

6

Support / Re: Color replacement in animations

« on: November 13, 2013, 02:08:34 pm »

Thanks for this quick answer.
If I understand your suggestion about sharedMaterial correctly it means that if I change the pixel value for the shareMaterial.texture it will change the pixel color for EVERY shirt of every player in the game. Am I right ?

As every player should have a different shirt color it's not what I need.

I'll go with this :

Code: [Select]

public class ColorReplace : MonoBehaviour
{
    Texture2D _modified_tex = null;

    private void RandomizeColor()
    {
        Texture2D tex = Instantiate(renderer.material.mainTexture) as Texture2D;
        renderer.material.mainTexture = tex;
        Color search = new Color(1.0f, 0.0f, 1.0f);
        Color replace = new Color(Random.value, Random.value, Random.value);
        Color[] pix = tex.GetPixels();
        for (int y = 0; y < tex.height; ++y)
        {
            for (int x = 0; x < tex.width; ++x)
            {
                if (pix[ y * tex.width + x ] == search)
                {
                    pix[ y * tex.width + x ] = replace;
                }
            }
        }
        tex.SetPixels(pix);
        tex.Apply();
        _modified_tex = tex;
    }

    private void Awake()
    {
        RandomizeColor();
        GetComponent<tk2dBaseSprite>().SpriteChanged += ColorReplace_SpriteChanged;
    }

    void ColorReplace_SpriteChanged(tk2dBaseSprite obj)
    {
        renderer.material.mainTexture = _modified_tex;
    }
}
Then, the pixel change will be compute only once and saved for every player. And as you suggested it I swap the texture every time the animator change the material.
What do you think? Does it look correct to you?

Thanks again for your answer.

7

Support / Color replacement in animations

« on: November 13, 2013, 07:21:22 am »

Hi,

I'm trying to do some color replacement for player customization purpose.
I want the player to be able to choose the color of his avatar. Imagine a sprite of a football player, I want to change the shirt color only.
I've been looking at some "green screen" technique, where the initial shirt color would be of a color I don't use (full green, or full pink), and then use Unity3D GetPixels / SetPixels to replace only pixels of this specific color with the one chosen by players.

It works fine with static sprites. But I wonder how to perform such replacement with sprite animation?

Also, if you have any better idea on how to perform such color replacement, please share it

Here is the code I use so far :

Code: [Select]

    private void Awake()
    {
        Texture2D tex = Instantiate(renderer.material.mainTexture) as Texture2D; // I guess it's because animator doesn't use mainTexture.
        renderer.material.mainTexture = tex;
        Color search = new Color(1.0f, 0.0f, 1.0f); // looking for pink color
        Color replace = new Color(Random.value, Random.value, Random.value); // changing it by a random color
        for (int y = 0; y < tex.height; ++y)
        {
            for (int x = 0; x < tex.width; ++x)
            {
                if (tex.GetPixel(x, y) == search)
                {
                    tex.SetPixel(x, y, replace);
                }
            }
        }
        tex.Apply();
    }
Thanks for your help