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"Melody" <nomail@nomail> wrote:
> at equator 1 deg = 111.32 km = 111320
> the island is 93 miles (150 km) 150000
>
> 111320 / 4206 = 26.466952
> 300 / 26.466952 = 11.33489
>
> my scale is <300,11.335,300>
>
> (if a map vertical Scale of 15, still made a 1x1x1 model.)
> still testing these things
note that the camera starts at a height of 50.
all tiles scaled to <300,50,300>
as the camera flies past a peak of 50 at 50,
I get a sense something very accurate is happening
with DEMPOV regardless of image vertical scale.
if vertical scale is too high, the image is solid yellow. no data.
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I suspect map vertical scale of 15 was a lucky guess.
red hits the model height of 1, so scale to 50 hits 50 for Hawaii-c.
here's what I mean, picture is worth ... black green red
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Attachments:
Download 'hawaii-c.jpg' (584 KB)
Preview of image 'hawaii-c.jpg'
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so the magick number, for every cube at 1x1x1.
xscale / 26.467 = yscale
long as you have black green red ...
find highest vertical scale,
tallest model's image hits red.
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111320 /
lowest to highest elevation in meters =
if you got that number, u know your scale
its a 1x1x1 cube if your map verticalscale was black green red.
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the numbers suggest this to scale
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Attachments:
Download 'kauai_an5.png' (122 KB)
Preview of image 'kauai_an5.png'
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Op 09/12/2019 om 12:20 schreef Melody:
> the numbers suggest this to scale
>
Yes! This looks right indeed!
--
Thomas
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"Melody" <nomail@nomail> wrote:
> the numbers suggest this to scale
Based on photos I've seen of Mauna Kea, this looks accurate.
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> so the magick number, for every cube at 1x1x1.
> xscale / 26.467 = yscale
>
> long as you have black green red ...
> find highest vertical scale,
> tallest model's image hits red.
>
>
>
>
>
The highest possible point would be yellow.
Green is the low 8 bits and red the high 8 bits for a 16 bits resolution.
The blue channel is not used.
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Alain Martel <kua### [at] videotron ca> wrote:
> The highest possible point would be yellow.
> Green is the low 8 bits and red the high 8 bits for a 16 bits resolution.
>
> The blue channel is not used.
just going by what I see. red hit a scaled height of 50, eye view,
the peak sat at 50.
any solid yellow is flat top, saw that too.
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hawaii-c.jpg thats as close to yellow as you want to get I suppose,
or start washing out and losing data. and it hit the mark.
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