x

Search in
Sort by:

Question Status:

Search help

  • Simple searches use one or more words. Separate the words with spaces (cat dog) to search cat,dog or both. Separate the words with plus signs (cat +dog) to search for items that may contain cat but must contain dog.
  • You can further refine your search on the search results page, where you can search by keywords, author, topic. These can be combined with each other. Examples
    • cat dog --matches anything with cat,dog or both
    • cat +dog --searches for cat +dog where dog is a mandatory term
    • cat -dog -- searches for cat excluding any result containing dog
    • [cats] —will restrict your search to results with topic named "cats"
    • [cats] [dogs] —will restrict your search to results with both topics, "cats", and "dogs"

Office Holiday

Epic Games' offices will be on holiday from June 22nd to July 7th. During this period support will be limited. Our offices will reopen on Monday, July 8th. 

Mimicking a Distribution Vector Uniform with a Particle Parameter?

So, I currently have an "Initial Location" module, specifying that particles are to be spawned randomly between 0, 0, 0 and 0, 800, 0.

I want this to be controlled via Blueprint, so I exposed this value as a "Distribution Vector Particle Parameter", but this value is effectively only a "single vector", not a range.

Several answers have suggested I feed a random value created in BP to this parameter, once a frame, on event tick. But this doesn't actually help, in this case: this particle system released hundreds of particles nearly instantly upon activation, and moving a single vector around once a frame doesn't work.

Is there any way to expose this behavior properly?

Product Version: UE 4.12
Tags:
more ▼

asked Jul 21 '16 at 07:10 AM in Rendering

avatar image

IridiumStudios
21 3 5 8

avatar image iLegacy Oct 05 '16 at 02:16 PM

I would love to know that too!

avatar image norlin Nov 14 '16 at 05:36 AM

Have you found any solution for this?

avatar image IridiumStudios Nov 14 '16 at 06:07 AM

Nope. :( Not sure it's possible at this current moment in time. I ended up literally making 13 different particle systems with different DVPP values and picked which one to spawn in. Not perfect, but...good enough, I guess.

(comments are locked)
10|2000 characters needed characters left
Viewable by all users

2 answers: sort voted first

This reply is a bit late but you can create your own random distribution vector with parameters. See: https://blog.dubbelboer.com/2018/10/14/unreal-distributionvectoruniformparam.html

more ▼

answered Oct 14 '18 at 09:20 AM

avatar image

erikdubbelboer
361 3 4 7

(comments are locked)
10|2000 characters needed characters left
Viewable by all users
more ▼

answered May 13 '19 at 09:59 PM

avatar image

nitosouji
21 3 2

(comments are locked)
10|2000 characters needed characters left
Viewable by all users
Your answer
toggle preview:

Up to 5 attachments (including images) can be used with a maximum of 5.2 MB each and 5.2 MB total.

Follow this question

Once you sign in you will be able to subscribe for any updates here

Answers to this question