repeat length animation

[chumbucket]

Hi.

I do have a DOP network which creates points.

On those points I'm copystamping a line.

I want to animate the length of the line starting with the birth of aforementioned points. So for every birthed point the length should start with 0 and reach a certain value in 1 sec.

Here is a mock-up of what it should look like.

I have no clue where to start. timeshift, for each loop, vops, vex.

Edited March 26, 2018 by chumbucket

[Sean-R]

You could use the particles age and life attributes and write them into a scale attribute in a wrangle like so:

// Normalize the age by dividing it with the life attribute, this will give a value between zero and one
float nage = @age/@life;
//Because nage is a float variable it will be copied three times in the vector scale attribute
v@scale = nage;

Then plug this into a copy sop with your line geo at the maximum length you want.

[chumbucket]

Thanks Sean!

Just to clear it up for others.

1. create a wrangler after the pop net

2. in the wrangler write

float nage = @age/@life;
//f@length because I just want to manipulate the length of the line and not the whole scale. Idon't want to fudge with the initial velocity I have set //previously. The 50 is just a multiplier. You could "ch" it for more convenience aswell
f@length = nage*50;

3. In the copy sop tick on "Stamp Inputs" and create a variable "length" with the value "@length" referencing the previously created attribute from the wrangler

4. write this in the length parameter of the line sop

//the line geo will look up the value from the copy sop. "0" is the default value
stamp("../copy1/","length",0)