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Height map question

Started by Scooter Jun 30, 2004 at 7:23 PM 4 replies 1.2k views

Original Post

Jun 30, 2004 at 7:23 PM

I'm reading values from a .raw file and storing them in an array ie... BYTE g_HeightMap[MAP_SIZE*MAP_SIZE]; ...so all I have to do is index into the array to get the current height of an objects position. This is probably something dumb cause i'm out of practice, but I can't get the terrain to deform. By this I mean when i change a value in the array the terrain doen't change.... g_HeightMap[10] = 0.0f; ...this does not move the points height to 0.0, what could I be doing wrong?

Promit

Jun 30, 2004 at 7:25 PM

You could be setting a BYTE to a float value, for one thing.

Although that shouldn't break it...

C-Junkie

Jun 30, 2004 at 7:33 PM

When you change the value in the heightmap, are you changing the value used to render the triangles?

rKallmeyer

Jun 30, 2004 at 7:41 PM

are you addressing the correct cell?
array [y*width + x]

Onemind

Jun 30, 2004 at 7:49 PM

The change may not be noticable. You should try setting a large block equal to 0 (or some other constant). Also be careful of "0.0f", it might be converted, but I wouldn't take that chance.

Deranged

Jul 1, 2004 at 12:11 AM

a BYTE is not a floating point value and cannot handle decimals, you should use 0 not 0.0f.

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