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wolfgang959

Game Assets Sizing

3 posts in this topic

Hi everyone, i have a game all planned out and i want to first start work on the game assets, i have 3ds max and Maya to model with. The part i'm struggling with is how to make the objects/characters (assets) the correct size/dimension to one another and to the game world. 

 

If anyone would be able to shed some light on how to do this it would be greatly appreciated.

 

Thanks.

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Generally you create an arbitrary scale for your objects and then model accordingly. For example, you might define 1 unit to be 1 inch, so your model for a sword would be somewhere around 30 to 40 units long and a woman might be 70 to 80 units tall. Generally your 3D Software has an option for you to specify the unit to real world scale that you want so that you can model in real world units. Of course different software often ships with radically different defaults (Ex: Carrara uses 1 unit is one inch but Cinema 4D uses 1 unit is one meter). And sometimes the bastards switch from one scale to another between versions (Ex: Poser 5 used 1 Poser unit to be 96 inches but Poser 6 uses 103.2 inches).
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Okay thanks for your help that's made it a little more clearer to understand, you see i come from a engineering background i design engines and parts in 3D modeling software, and this project has just been a little hobby for me. I'm use to designing things with very accurate measurements and i didn't think the step from that to this would be so great. 

 

So from what your saying am i right in understanding that the game engine (which ever i choose) will also have this unit to real world scale then also. If that's the case would it be best to find out that scaling first then apply it into the models that i'm going to create, does that make sense?

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Hi,

 

 

I use different methods for sizing and scaling depending on the needs of what is most efficient or accurate in the circumstances. 

 

My most common techniques:

 

1) Establish the scale of the grid in the program. For example, in Wings3D one square in the grid of the viewport is one square meter. 3DS Max, Blender, or Deep Explorer have others.  I have measuring tools which I have made in the past which I can quickly bring in to the viewport by importing or opening them in the program.  The appropriate ones are chosen, for instance, 10 kilometer one for terrain levels or a height scale for characters ( These scales have height and length or height and width measured ).  These tools are:  image planes, images, tetrahedrons which have been subdivided, or custom made measuring jigs for unusual shapes or measurements. 

 

2) Sometimes I import a previous made character or other model which is the appropriate or close to the desired size and shape of the new content to be used as a kind of template.

 

3)  Parts of previous models may also be used or combined from different models to be used as a template.  A case would be a ship which is the same class of build, such as aircraft carrier of a class (Iowa Class Battleships, or other class, are examples) I may use a whole model as a template for a future one or parts of it which are to be the same in the new model.  Other times these parts my be transformed while keeping the original dimensions.   

 

I always verify the model dimensions with a measuring stick or measuring square (similar to a carpenter's square) before declaring the model finished.

 

Strategic Considerations:

 

1) Generally build and measure the most important parts or art assets first.

 

2) Create the art assets and measure them which are most often viewed or used in the game.

 

3) Always prioritize a process of most important to least important and repeat the cycle until all assets are done:

 

Example of build, measure, and import in to game:

a) Terrain (Finish the land closest to the main character first if possible)

b) Main Character

c) Vehicle or building used by the main character

d) Weapons or tools used by the main character

e) Environmental assets used by or closest to the main character, such as rocks, trees, furniture, and so forth 

 

Repeat the process with the second, supporting, or opposing character and all environmental assets like listed above here.

 

Note: In some games, the game engine might allow you to resize the art assets after import.

 

All assets should ideally be measured before you import into game to avoid distracting the artistic train of thought.  Try to keep the technical things such as measuring the objects outside the game as much as possible to keep the in game art workflow as pure as possible.  This results in most powerful artistic creativity.

 

Important:  The more polygons and other aspects such as ray-tracing (should be avoided most of the time) in an area than the greater the hit on performance, so there are programs which measure these things - an important area of measuring art assets.  For example, programs can measure numbers of polygons, vertices, edges, faces, surface area, and surface shader area within a given area or volume of the game scene. Some do this by core or threading, too. This is advanced but definitely crucial ways of measuring models or other art assets.

 

 

Clinton

Edited by 3Ddreamer
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