Color mixing

[Username?]

I tryed to make objects, who are mixing their color onCollide.
I've tested it with a pure green box and a pure red box.

Script 1:

Code: Select all

e.this.color = [(e.other.color(0) + e.this.color(0)) / 2, (e.other.color(1) + e.this.color(1)) / 2, (e.other.color(2) + e.this.color(2)) / 2]

The problem is, that both boxes are getting complete black

Script 2:

Code: Select all

e.this.A = (e.other.color(0) + e.this.color(0)) / 2;
        e.this.B = (e.other.color(1) + e.this.color(1)) / 2;
        e.this.C = (e.other.color(2) + e.this.color(2)) / 2;
        e.this.color = [e.this.A, e.this.B, e.this.C, 1.0]

At this, the red box will become color = [0.0, 0.66666665, 0.0]
and the green box color = [0.0, 0.75, 0.0]

I really don't know why!

[TC42]

Script 1:

Code: Select all

e.this.color = [(e.other.color(0) + e.this.color(0)) / 2, (e.other.color(1) + e.this.color(1)) / 2, (e.other.color(2) + e.this.color(2)) / 2]

The problem is, that both boxes are getting complete black

That's because color has 4 values--it's an RBGA array; you forgot to put the fourth value into the code. I just found that

Code: Select all

(e)=>{color=((e.this.color(0) + e.other.color(0)) / 2), ((e.this.color(1) + e.other.color(1)) / 2), ((e.this.color(2) + e.other.color(2)) / 2), 1]}

will work (paste it into both boxes' oncollide).

[Username?]

Exactly the same problem like in script 2
and algoodo shows your code as incompatible, it have to be:

Code: Select all

(e)=>{e.this.color = [(e.this.color(0) + e.other.color(0)) / 2, (e.this.color(1) + e.other.color(1)) / 2, (e.this.color(2) + e.other.color(2) / 2), 1]}

or is there any secret about the code, I don' know? XD

[TC42]

Try dividing by less than 2; it probably won't be the correct color on the first collide due to rounding errors, so remember to correct for that.

[Username?]

I'll make it with ABC for the other colors, DEF for the own colors and GHJ for the /2.
Then I can analyze that problem.

[Kilinich]

script can be much simpler: color = (e.this.color + e.other.color) /2

[Username?]

Damn, same problem. maybe that is a bug:
red block + green block = both blocks green
red block + blue block = both blocks blue
green block + blue block = both blocks blue

WHY????

Or does that work for you?

EDIT2:
the problem is, that both scripts are running one after another, so that one block will change his color faster. My red block is the fastest.

[Kilinich]

try this:

1) set controllerAcc of all geoms to 0
2) set onCollide to:

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onCollide = (e) => {
   e.this.controllerAcc < sim.time ? {
      mixColor := (e.this.color + e.other.color) /2;
      e.this.color = mixColor;
      e.other.color = mixColor;
      e.other.controllerAcc = sim.time;
   } : {}
}

[Username?]

I've found an easyer way:

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(e)=>{
    e.other.text == "42-the_answer" ? {
        mixColor := (e.this.color + e.other.color) / 2;
        e.this.color = mixColor;
        e.other.color = mixColor
    } : {}
}

If one code does everything for both boxes, they'll mixed correctly.
Then the other box runs it's code. That code won't change everything, because it's already done.
Thx guys.