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. 

Ribbon particle not visible when coming from behind

In our setup we are moving along a road. Then we simulate traffic coming from behind overtaking you and traffic that is on the other lane traveling towards you. I visualize this traffic with a ribbon particle. I have an actor with a particle component attached and i move the whole actor past me. The problem is that the ribbon particle is not visible when it comes from behind. here you can see the debug sphere that indicates the actor's location. The ribbon is not visible. alt text The funny thing is that if i look behind me with the camera and then to the front again the particle suddenly appears. As if it needed to be out of my view and then back in it again to become visible. This is what it looks like when i have looked behind me and then to the front again. alt text

The traffic that is on the other side of the road, which spawns ahead of me and comes towards me, acts fine.

My setup is very simple. Just a ribbon particle with a lifetime of 2 seconds. alt text

Product Version: UE 4.15
more ▼

asked Apr 25 '17 at 08:51 AM in Using UE4

avatar image

53 1 6 11

avatar image EstherZuidgeest Apr 25 '17 at 09:34 AM

I also have these warnings in the output log: LogParticles:Warning: RIBBON : FillReplayData failed. LogParticles:Warning: IndexCount (360262) exceeds allowed value (65535). LogParticles:Warning: ActiveParticleCount = 51. LogParticles:Warning: TriangleCount = 360260. LogParticles:Warning: TrailCount = 1. LogParticles:Warning: /Game/Effect/vehicles/Taillights_P.Taillights_P

I haven't found an answer on the forums about that warning.

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

1 answer: sort voted first

Don't know about the warnings, but...

I think you may solve your issue checking the setting that makes your material two sided. Hope it helped! :D

more ▼

answered Aug 04 '17 at 09:05 AM

avatar image

Mighty Marcos
86 6 9 14

(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