koobas.hobune.stream
LeanTween alpha problems
Hello! I'm trying to use LeanTween to tween the alpha of a Game Object and having som trouble. here's my code:
using UnityEngine;
public class Fade : MonoBehaviour {
public float duration = 1f;
public float transparent = 0f;
public float opaque = 1f;
void Start ()
{
}
void OnMouseDown ()
{
FadeObjectIn ();
}
void FadeObjectIn ()
{
print ("Fading color in");
// Fade GO in from 0 to 1, but it doesn't work?
LeanTween.alpha(gameObject, opaque, duration);
}
}
Basically, when the player clicks the Gme Object, it's supposed to fade in from transparent to Opaque and it doesn't work. If I try to fade in from Opaque to transparent, it works but the speed is super slow, like 20 times slower than it should be. Anyone know what's up?
LeanTween version: 2.14 Unity Version: 4.3.4f1 Shader: Transparent/Bumped Defuse
I haven't used LeanTween yet.
But for now, you can try the following code which uses a coroutine:
void OnMouseDown()
{
// you might want to make sure at this point that coroutines of the same type will be stopped first
StartCoroutine(FadeIn(duration)); // duration variable from your code sample
}
IEnumerator FadeIn(float timer)
{
Color temp = new Color();
while (renderer.material.color.a < opaque) // opaque variable from your code sample
{
temp = renderer.material.color;
temp.a += Time.deltaTime/timer;
renderer.material.color = temp;
yield return null;
}
temp.a = 1f; // set it back to exactly 1f
renderer.material.color = temp;
}
Interesting solution but have you tried the code? it doesn't seem to fade in but ins$$anonymous$$d immediately turns opaque (no matter what number you set the duration to)
It should work, try to set the color's alpha (shader should be a type of transparent one) to anything less than 1 before you call the function. If you do not so, the function wont' do anything because its made for the fade in only. You can change this though.
Hey Roman!
I am not sure what the problem is, I just tried tweening that shader and it seems to be working fine. Check out the AlphaTesting scene from the github page: https://github.com/dentedpixel/LeanTween to see it in action.
Maybe you are calling the tweening code multiple times? I find it's best to do things on MouseUp, so that you can insure that it is only fired once...
I think the problem might have been that I didn't know about and therefore didn't follow the instructions for setting up LeanTween, which are located on github: https://github.com/dentedpixel/LeanTween
The alphaFade was causing me issues where it would stop half way or not even start, so I rewrote it as a coroutine to guarantee it would always work for me:
StartCoroutine(FadeToAlpha(canvasGroup, 0, 1));
IEnumerator FadeToAlpha(CanvasGroup canvasGroup, float targetAlpha, float fadeTime)
{
float startingAlpha = canvasGroup.alpha;
for (float i = 0; i < 1; i+= Time.deltaTime/fadeTime)
{
canvasGroup.alpha = Mathf.Lerp(startingAlpha, targetAlpha, i);
yield return new WaitForFixedUpdate();
}
canvasGroup.alpha = targetAlpha;
}
