Bluefish444 Create3D Bedienungsanleitung PDF herunterladen (Seite 96)

Modern 3D modelers can be used for much more than just construct objects out of polygons. As

Nemo is a real time system, certain simplifications are unavoidable. Only polygonal models (if

possible, made up of triangles) can be imported. Unfortunately even so there may be problems

with conversion. Some modelers either make an error when calculating certain parameters,

among others, the normal vector perpendicular to the plane of the polygon, or do not take them

into consideration at all. The reason is that they use a process called rendering for creating the

final image, and make the 3D calculations during this process.

A real time system cannot afford this sloppiness. Sometimes, unfortunately, it may occur that a

model made for instance in 3DS Max seems suitable there, but some of its parts appear as holes

in the model in Nemo. Such problems which arise from the calculation of normal vectors should

be solved in the modeler where the mistake originates.

If possible, always copy the files to be imported in the 3DModels folder belonging to the Page

Collection, because it is there that the program will look for them. You can adjust certain

parameters, before the conversion takes place and the model is saved in the format used by

Nemo3D.

● Open: Look for the model file in any of the supported formats in the dialogue window.

The name of the file selected will appear next to the button.

● Move to origin:

Make sure, as far as possible, that the center of the models constructed in the modeler

should be at the origin (0,0,0). If this cannot be ensured for some reason, or if you have

forgotten it, switching on this option can solve the problem. Placing the models in the

center is important because the default values of the pivot points should be in the center,

too.

● Rescale vertices:

If you frequently use a modeler for making models to be imported to Nemo, it would be

very useful to try to calibrate the units the modeler uses so models would seem more or

less the same size in both applications. As, however, this is not always simple, there is

an assistance which can be used during the import process. If you set a factor in the

numeric input field other than 1, Nemo will rescale the model during the importing

process without changing any other properties. To help you find the correct scale factor,

you should always take a look at the data of the model displayed in the Hints window.

● Recalculate normals: hard or smooth

As already mentioned, in some cases there may be problems with the normal vector data

of models exported from a modeler. A sign of this may be when some parts of the model

seem strangely perforated or if the lighting looks odd. In principle you should try to solve

this problem in the modeler, but if you do not succeed there, by switching on this option

Nemo will try to recalculate the normal vectors. You can also use this feature to make the

model appear smoother by averaging the normal vector of its vertices, or in some cases,

if you want a more segmented look, force the creation of hard normals.

1 2 ... 91 92 93 94 95 96 97 98 99 100 101 ... 124 125

Keine Kommentare

Bluefish444 Create3D Bedienungsanleitung Seite 96