Bluefish444 Create3D Manual de usuario descargar pdf (Pagina 60)

Eye Linear: Texture is applied as a plane on the object, using the absolute coordinate

system as a reference. If the object moves, texture does not move with it, it looks like the

object swims through the texture.

Sphere Map: The texture is projected with spherical distortion. This is often used for

environment mapping where you want the texture to look like a reflection of the

surrounding environment.

Reflection Map: Very similar to Sphere Map and also usually used for reflecting the

environment.

● Blending:

A given point of the texture is applied on a given vertex of the 3D model. The RGB (or in

the case of alpha channel, RGBA) value of this point may blend in different ways with the

color of the Material (defined by the setting of colors as discussed under the chapter

Materials and by lighting). The combination of these two gives the final color of the object

at that given point. The parameter of Blending defines the way of this combination.

Possible settings:

Modulate:

It multiplies (modulates) the RGB value derived from the texture with the RGB values

originating from the Diffuse color of the material. If you do not wish to tint the color

defined by the texture, use pure white (RGB=255,255,255) as the setting for Diffuse

color. In this case only the RGB values originating from the texture will apply.

Decal:

Makes a composite of RGB values of the material and of the texture at the given point

according to the alpha value originating from the texture. If there is more than one texture

unit used at the same time, the only useful setting of Blending in the case of the second,

third or fourth texture is the decal setting to serve any useful purpose.

Replace:

It does not take into account the diffuse color of the material, and applies the RGB values

originating from the texture without any modification. It disregards the alpha values as

well, so this setting is useless if you want to apply transparency (but Modulate with a pure

white Diffuse color does work with transparency).

Blend:

It blends the RGB values of the texture with the given color and not with the Diffuse color

of the Material.

Add:

It adds the RGB(A) values of the Diffuse color of the material and the texture.

● Resize quality:

Depending on the distance of the object from the camera, it may be necessary for the

texture to get scaled down (minification) or blown up (magnification). In both operations

filtering is also possible to improve quality, in this case the RGB(A) values of the resized

textures are calculated by an interpolating (bilinear) filter. In certain cases it may not be

useful to use this bilinear filter, which although produces smoother and better quality

result it also blurs the image. An example for such a case is when live video is applied as

texture on a rectangle by switching on the fit to screen parameter. In this case the filter,

otherwise improving quality, would unnecessarily deteriorate the quality of the clean

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