Autodesk LIGHTSCAPE, Руководство пользователя

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Using Materials 7
122
Lightscape
Aligning Textures
If a material is defined with a texture map, you may
need to adjust how the texture is aligned and posi-
tioned on the surface. To set texture alignment, use
both projection and mapping.
Projection Types
There are five different methods for projecting a
texture onto a surface: orthographic, cylindrical,
spherical, reflection, and object UV.
Orthographic
Use orthographic projection to project a texture
onto a plane defined by three points.
Cylindrical
Use cylindrical projection to wrap a texture around
a surface as if it were a cylinder. The cylinder is
defined by a top pole, a bottom pole, and a seam
direction.
Spherical
The texture is projected onto a sphere, defined by a
top pole, a center, and a seam direction.
Reflection
Use reflection mapping to simulate the reflection of
objects. Reflection mapping is similar to spherical
projection. A reflection map is defined by an object
center (the point from which it is generated), a top
pole, and a seam direction to orient the reflections.
Object UV
Use Object UV projection if you set texture coordi-
nates at the vertices in the original modeling system.
Lower Right
Upper Left
Lower Left
Upper Center
Lower Center
Seam Direction
Top Pole
Seam Direction