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"

Obtain World Coordinate from Color

I'm trying to get all world coordinates of a specific color in the world. How would I do this in C++?

Product Version: UE 4.18
Tags:
more ▼

asked Apr 04 '18 at 11:03 PM in C++ Programming

avatar image

KallenTu
1 1 1 3

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

1 answer: sort voted first

Assuming that the color may be generated by any shader or (post-)effect, you probably would have to get the screen buffer and do raycasts for all screen coordinates with pixels of the desired color to get the world coordinate. Please be aware that this approach will be very performance consuming and probably is not a good choice for real-time, especially if it is possible that there are many pixels with this color.

So my advice would be to evaluate if there are other solutions possible for your use case (e.g. add tags to all objects in question so you can get their world coordinates from scene graph. see )

more ▼

answered Apr 05 '18 at 10:24 AM

avatar image

j.mueller RFG
304 3 10 10

(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