Bluefish444 Create3D Manual do Utilizador descarregar pdf (Página 61)

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Linear - Linear: Filter switched on for both minification and magnification.

Nearest – Linear: Filter switched off for minification but switched on for magnification

Linear – Nearest: Filter switched on for minification but switched off for magnification

Nearest – Nearest: Filter switched off both for minification and magnification.

For textures based on still images, a procedure called mipmapping is automatically used

to achieve the best possible quality. With mipmapping, a set of the same texture is

generated with different sizes, and during minification, OpenGl automatically uses the

size closest to the one needed. This procedure gives you the best quality but it cannot be

used on image sequences or AVI files because of the time it takes to generate the

mipmaps from each frame would be to big to keep rendering in real time.

● Wrapping S, T, R:

If the whole surface of the object is not covered by the texture, you can indicate along the

three axes of the coordinate system of the texture, what the texture renderer should do at

the edges or “seams” (where the edges meet). S,T,R is the same as the usual X,Y,Z

axes but in so called texture space.

Repeat: It repeats the texture until it wholly covers the object.

Clamp: The texture is not repeated.

Clamp to Edge: Texture is not repeated; on those part of the object which are not

covered by texture, pixels at the edges of the texture are used.

Clamp to Border: Texture is not repeated, on those parts of the object not covered by the

texture, the border color is used.

Mirrored Repeat: Texture is repeated and mirrored at the same time

● Texture Transformation:

Just like coordinate system used for transformation of objects, textures, too, have their

own coordinate system. You can apply transformations on the texture coordinates using

this coordinate system.

Possible transformations are identical to those of objects (Translate X,Y,Z – Rotate

X,Y.Z, - Scale X,Y.Z.

The “R” (reset) button resets all transformations.

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Bluefish444 Create3D Manual do Utilizador Página 61