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DarkBASIC Professional Discussion / Good scale size for objects?

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HellsDevilDog
15
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Joined: 18th Mar 2011
Location: Ohio
Posted: 17th Feb 2012 22:30
Hello,

I'm looking for a good scale size for objects. Lets say I model a person who's to be 6 feet tall, what would be a good unit scale for this? 1 y unit = 1 inch? 1 foot? 1 meter? etc.

After googling this for the past 2 hours, Only useful info (so I think)I've came upon was this valve hammer unit reference;



Anyone think that's a good reference? (This is assuming 1 map grid = 1 x unit?)

Thanks for any help given!
Pincho Paxton
23
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Joined: 8th Dec 2002
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Posted: 18th Feb 2012 00:58 Edited at: 18th Feb 2012 01:03
It depends on the light I suppose. I can tell if a model is miniature in a movie by the way that the light falls on it. Small objects have more light hitting them on their tips.

HellsDevilDog
15
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Joined: 18th Mar 2011
Location: Ohio
Posted: 18th Feb 2012 14:38
That leads me to ask another question; Say I have sphere 'A' that's 1000 units big (1000x, 1000y, 1000z) and sphere 'B' next to it that's 5 units big (5x, 5y, 5z), Assuming the light's at the correct angle to hit both spheres with the same amount of light, would sphere A use more calculations than sphere B as sphere A is 200 times bigger than sphere B?

Thanks ^^
Brendy boy
20
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Joined: 17th Jul 2005
Location: Croatia
Posted: 18th Feb 2012 14:43
Quote: " A use more calculations than sphere B as sphere A is 200 times bigger than sphere B?"

No

Chris Tate
DBPro Master
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Joined: 29th Aug 2008
Location: London, England
Posted: 18th Feb 2012 15:23 Edited at: 18th Feb 2012 15:24
The unit system is using single floating point numbers which have 7 digits of precision. So for accurace, stick to a size which allows you to position things accurately in your world. If 1 unit is 1 metre, then 9999.99 kilometers to -9999.99 kilometers (9999999 units) would be the absolute maximum range before you lose precision. But if 1000 units was one meter, your level could not exceed 9.9 kilometers (9999999mm) which is still large, however certain plugins like Physx, need alot of precision for movement and digits for speed.

Eg: 1.234567, 123456.7, 0.00001234567, 1234567000000000 are valid single floating point numbers, but as you can see, the accuracy is lost after the seventh digit.

MrValentine
AGK Backer
15
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Joined: 5th Dec 2010
Playing: FFVII
Posted: 21st Feb 2012 05:29
I had a similar question to this a while back... good to see I am not alone in this... yeah can we not do double precision? Double Floats? or does DP PhysX not support this?

Kezzla
17
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Joined: 21st Aug 2008
Location: Where beer does flow and men chunder
Posted: 21st Feb 2012 07:07
I based my scale upon the default FPSC model scale, because I use a lot of FPSC models and i dont want to have to resize everything.

I assume my character is 6 foot, and use a character height of 70, which puts my view on scale with their media. I guess if your american then you can go with 72 and make one unit one inch.

Sometimes I like to use words out of contents

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