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Perspective camera moves erratically after heightmap import


I'm trying to import a basic heightmap. After importing, the landscape shows up (a bit stretched, but that may be due to the size being different), however immediately the perspective camera begins to randomly switch between a few different views, one every second or two in a cycle of about 3-5 orientations. I'm running at a very low fps, but even without changing any settings, if I try to zoom out even a small amount it begins this strange behavior.


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asked Jun 05 '14 at 01:55 PM in Using UE4

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avatar image Ben Halliday STAFF Jun 05 '14 at 07:50 PM

Hey vaughnva,

Would you mind attaching your heightmap so I can try to reproduce the issue here?


avatar image vaughnva Jun 06 '14 at 12:40 PM

Sure, I was just using an example I found online to see if I could get heightmap imports to work, but here it is: alt text

hm_ex1.png (39.4 kB)
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When I created a landscape from that .png, I didn't get any erratic camera behavior. Does this occur while editing in the Viewport, or only during Play? Does it occur after restarting the editor? Have you upgraded to 4.2 or is this in an earlier build?

Incidentally, that .png also threw a few errors at me when I tried to use it as a heightmap for a new landscape. Apparently the file is not a grayscale png, and it is an 8-bit png as opposed to 16-bit, which is preferred. I don't think that's causing the problem for you, but might be something to consider for future landscaping.

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answered Jun 06 '14 at 10:08 PM

avatar image vaughnva Jun 10 '14 at 01:39 PM


It was on 4.2 - I tried again, but it appears to have resolved itself. The problem may have been that I was previously working at a very low fps.

As to the .png being of the wrong type - it was only a quick example online of something to use, simply to test the feature. I appreciate the warning though.

Thank you!

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