GeoMipTerrain issue

Scripting Issues
1

Hi

I am trying to generate terrain from 257x257 png image.
But i get this error:

:grutil(error): Specified image does not have a power-of-two-plus-one size!
:grutil(error): No valid heightfield image has been set!
myImage = PNMImage()
myImage.read(Filename("Data/World.png"))

self.terrain = GeoMipTerrain("World")
self.terrain.setHeightfield(myImage) 
self.terrain.generate()

Panda v1.7.0
Windows

2

Are you sure that Data/World.png is really 257x257?

3

Yes

4

Ꙭ

Can you upload it? I’m able to load a 257x257 image fine. I wonder what is different about yours.

Also, can you try this line (before the read() call):

myImage.setReadSize(257, 257)
5

img19.imageshack.us/img19/6548/worldkq.png

myImage.setReadSize(257, 257) not works :confused:

6

I can load it correctly, no errors. Are you sure that the right image is loaded? What does it print if you put this after the read() call:

print myImage
7 
image: 0 by 0 pixels, 0 channels, 255 maxval.

That’s Strange. Image is in correct place.

8

Does the read() call return False? If so, the image failed to load, and that could explain why GeoMipTerrain chokes on it.

assert myImage.read("Data/World.png"), "Failed to read!"
9

When i try this code:

myTexture = obj.loader.loadTexture("Data/World.png")
print myTexture

output :

2-d, 256 x 256 pixels, each 1 shorts, luminance
10

Try this:

from panda3d.core import getModelPath

myImage = PNMImage()
myImage.read(getModelPath().findFile("Data/World.png"))
1 Like
11

Thank you! Now its working fine. :slight_smile: