Working on a ambitious world generating tool...

[covatex]

The original heightmap (without black lines) is attached in the first message of the thread...

Here is the code I'm using:
actualX and actualY are the starting point coordinates. W is the width and h is the height or the image. Sealevel is... well... guess what!

    actual = (GetPixel(picMap.hdc, actualX, actualY) And &HFF)
    Do
        used = False
        modX = 0
        modY = 0
        dif = 255
        min = 255
        For i = -1 To 1
            For j = -1 To 1
                used = ((GetPixel(picMap.hdc, actualX + i, actualY + j) And &HFF) = 0)
                If actualX + i > 0 And actualY + j > 0 And actualX + i < w And actualY + j < h And Not used Then
                    testValue = (GetPixel(picMap.hdc, actualX + i, actualY + j) And &HFF)
                    dif = actual - testValue
                    If dif >= 0 And dif <= min Then
                        If i = 0 And j = 0 Then
                        Else
                            min = dif
                            modX = i
                            modY = j
                        End If
                    End If
                End If
            Next
        Next
        actualX = actualX + modX
        actualY = actualY + modY
        actual = (GetPixel(picMap.hdc, actualX, actualY) And &HFF)
        Call SetPixel(picMap.hdc, actualX, actualY, 0)
        picMap.Refresh
    Loop Until (modX = 0 And modY = 0) Or (actual < seaLevel) Or actualX < 0 Or actualY < 0 Or actualX > w Or actualY > h

[Redrobes]

Sorry didnt spot that. I took the height field that you posted and your color and made a 3D view. Also, I took the output from the river run and put that on top for reference. If you like these images then you can have the app - its a freebie.

Anyway - here's some pics. I guess Nick will have to verify if you have the right method.

[Redrobes]

I did some more tests using my GTS to see if it could predict the river flow but it struggled with this height map too. The first image is what its like if I set it like soft mud and let it erode wildly. It cuts deep channels into it because of the large drops in height.

Trying again with lower erosion and also adding what I call frost erosion in that when the gradient gets too high it smooths out steep cliffs then it drops out those spikes and also does a better job with the erosion. I was having fun so I rendered it with some textures too. I really like the result - looks like a waterfall type scene. Anyway - either of the two images get some basic similarities in the water flow so there's some general / vague consensus here about where the water might go. Its still a sim tho - its all guesswork.

[covatex]

Off Topic
Redrobes, I've downloaded ViewingDale. I put the Height.bmp and Color.bmp, but only see grayscales... What's happening?

[Redrobes]

Don't know ! Can you resize or make the dimensions of the images 512x512 each ? And it might be helpful if using full color images though its not supposed to matter. Other than that you might have an older type of graphics card or a driver issue.

[Nickadimos]

I have read what you all have wrote..

I am at work on break right now..

I will respond in full once I get home tonight...

What a bummer if this doesnt work...

Thanks
Terry

[Bedwyr]

Redrobes: it looks like it could host a scene in Fantastica from The Neverending Story.