Change camera background color randomly overtime

unity change camera background color
unity change color over time
unity 2d set background color
unity rainbow color

I am trying to smoothly change the camera's background color between two colors that are picked randomly. I've already achieved that, but then I started noticing that there is a flash whenever a new color is picked. I've uploaded a video of the problem on this link. And this is the script that I'm currently using:

public Color color1;
public Color color2;

float time;
float time2;
float transition;

int firstColor = 0;


void Update()
{
    if (firstColor == 0)
    {
        color1 = Random.ColorHSV(Random.value, Random.value);
        color2 = Random.ColorHSV(Random.value, Random.value);

        firstColor = 1;
    }

    Camera.main.backgroundColor = Color.Lerp(color2, color1, transition);

    time += Time.deltaTime;
    time2 += Time.deltaTime;
    transition = time2 / 5;

    if (time > 5)
    {
        color2 = color1;
        color1 = Random.ColorHSV(Random.value, Random.value);

        time = 0;
        time2 = 0;
    }
}

Any help is very much appreciated.

You need to do this with a coroutine. You can then easily be able to program when to change new color after the current transition ends. Anything you have to do overtime, you should always consider using coroutines. It removes the needs for lot's of boolean variable and confusion.

You can wait in a coroutine function without a boolean variable but you can't in a void function like the Update function. You are already using Time.deltaTime and the Lerp function so you know what you are doing half way. Here is a proper way to do this:

//2 seconds within each transition/Can change from the Editor
public float transitionTimeInSec = 2f;

private bool changingColor = false;

private Color color1;
private Color color2;


void Start()
{
    StartCoroutine(beginToChangeColor());
}

IEnumerator beginToChangeColor()
{
    Camera cam = Camera.main;
    color1 = Random.ColorHSV(Random.value, Random.value);
    color2 = Random.ColorHSV(Random.value, Random.value);

    while (true)
    {
        //Lerp Color and wait here until that's done
        yield return lerpColor(cam, color1, color2, transitionTimeInSec);

        //Generate new color
        color1 = cam.backgroundColor;
        color2 = Random.ColorHSV(Random.value, Random.value);
    }
}

IEnumerator lerpColor(Camera targetCamera, Color fromColor, Color toColor, float duration)
{
    if (changingColor)
    {
        yield break;
    }
    changingColor = true;
    float counter = 0;

    while (counter < duration)
    {
        counter += Time.deltaTime;

        float colorTime = counter / duration;
        Debug.Log(colorTime);

        //Change color
        targetCamera.backgroundColor = Color.Lerp(fromColor, toColor, counter / duration);
        //Wait for a frame
        yield return null;
    }
    changingColor = false;
}

Randomly Transition Camera Background Color?, I've tried both lerping and straight setting the camera Bg color (as Then you change the background to 90% of that new color and 10% of the  Tech support scams are an industry-wide issue where scammers trick you into paying for unnecessary technical support services. Additionally, some scammers may try to identify themselves as a Microsoft MVP.

My guess would be the error is here:

if (time > 5)
{
    color2 = color1;
    color1 = Random.ColorHSV(Random.value, Random.value);

    time = 0;
    time2 = 0;
}

If you notice, the blink occurs about 5 seconds after your playtime starts, playtime starts at about 3 seconds in and the green blink happens at about 7-8 seconds in.

I'm thinking the line color2 = color1; is the one at fault.

Basically you're smoothing the colour the first 5 seconds with interpolating between the 2 colours and then randomly forcing the colour. Which creates the blink effect.

Change color gradually?, In this example I change the background color of the Main Camera. new GradientAlphaKey[2];; colorkeys[0].color = new Color(Random. //2 seconds within each transition/Can change from the Editor public float transitionTimeInSec = 2f; private bool changingColor = false; private Color color1; private Color color2; void Start() { StartCoroutine(beginToChangeColor()); } IEnumerator beginToChangeColor() { Camera cam = Camera.main; color1 = Random.ColorHSV(Random.value, Random.value); color2 = Random.ColorHSV(Random.value, Random.value); while (true) { //Lerp Color and wait here until that's done yield return lerpColor(cam

Although @Programmer's answer was on spot and it works perfectly, I managed to find the issue in my above code.

What was happening is that after I set color1 in line 29 to a new random color, transition has the value of 1 (clamped). So, before transition is set in the next frame at line 25, line 21 executes, and since transition = 1, the new color1 is returned, hence the "flashing" of the new color1. So I simply re-set transition to 0 after re-setting time and time2.

Scripting API: Camera.backgroundColor, Switch to Manual. public Color ping-pong animate background color using UnityEngine; using System. void Start() { cam = GetComponent<Camera>(); cam. In this tutorial we would going to change – set the background color of a View dynamically on button click. The random color would generate using JAVA’S default Random method. This is a pre inbuilt method available in JAVA. So here is the complete step by step tutorial for Android Generate Random Color on Button Click Programmatically.

for flashing use this one

 if (time > 5)
    {
        color2 = color1;
        color1 = Random.ColorHSV(Random.value, Random.value);

        time = 0;
        time2 = 0;
    }
    else
    {
        time += Time.deltaTime;
        time2 += Time.deltaTime;
        transition = time2 / 5;
        background.color = Color.Lerp(color2, color1, transition);
    }

Producing and Directing the Short Film and Video, Change camera background color randomly overtime. I am trying to smoothly change the camera's background color between two colors that are picked  void Update() { float t = Mathf.PingPong(Time.time, duration) / duration; cam.backgroundColor = Color.Lerp(color1, color2, t); } } See Also: camera component , Camera.clearFlags Is something described here not working as you expect it to?

Popular Mechanics, negative cutting The process of conforming camera original negative to the editor's neutral-density filter A filter that is gray in color and affects all colors equally. capable of working out of sequence or in a random manner, as in film editing. a 60Hz transmission standard. offline edit Preliminary postproduction session,  Chroma Background Changer is an amazing Camera app which allows the user to change photo background automatically while capturing. You can even Remove Photo Background and use Video background. It can be used as Camera Lens to Edit Image while taking the snap or can be used as background Photo Editor too.

Unity3d Lerping Material Colors, We cover simple color lerp from one color to another, and repeatable lerp continuously Duration: 5:31 Posted: 14 Jun 2017 JavaScript exercises, practice and solution: Write a JavaScript function to create random background color.

Accessibility of text over random background colors, Accessibility of text over random background colors that your app development is heading in the right direction (and can be improved later over time). we have all the needed methods to change the background and text colors dynamically. If we have a dark background color then it won't look nice:  @mHoneycomb--. Here's a simple example of a class that handles timed color fading. Create a single object and flip the color back and forth, or update the target color periodically, or update or replace the whole thing with a new object using a new set of colors / times.

Comments
  • That is such a great code, thank you for the explanation.
  • The reason why I am doing this, is to transition between the old color and the new picked color. I even tried to do this color2 = Camera.main.backgroundColor but I still got the same result. is there a better way to achieve this?