9.5.2

956 • CHAPTER 18
TEXTURE MAPPING • 957
Prior to CINEMA 4D R8.2, the bump was always projected using spherical mapping — even if UVW
mapping was dened. Since R8.2, UVW mapping has been used instead provided the Texture tag has
UVW Mapping selected. This can lead to problems — see the following picture.
Artefacts with the Noise shader in the Bump shader and Use UVW For Bump disabled.
Artefacts may appear in certain areas in the border area between two neighboring UV polygons,
especially when using the Noise shader with a high Delta value. This is caused by the discrepancy
between the coordinate systems of the object polygon and the mapped UV polygon. This is a general
problem and can only be resolved by increasing the geometry’s resolution.
Alternatively, you can use the old variation that was used automatically before version 8.2. However,
keep in mind that this will lead to artefacts at the poles and in addition does not support the
realignment of UVWs (especially optimal mapping).
Coordinates
P, S, R (Position, Scale, Rotation)
On this page of the Attribute manager, you’ll nd the settings that control the texture’s position,
scale and rotation. You can also change these values interactively in the viewports (with the Texture
Axis tool selected), provided UVW mapping is not active. Figures 1 and 2 demonstrate the difference
between the Texture tool and the Texture Axis tool. Both pictures demonstrate a movement in the X
direction. In Figure 1 the texture is moved about the texture envelope (Texture tool, Offset). In Figure
2 the texture geometry itself is moved (Texture Axis tool, Position).