Properties
Type – Specifies the type of projection mapping to use from the following: None – No UV coordinates for projection are generated. The expected result is for pixel color at the (0, 0) coordinates of the input texture to be sampled and applied uniformly across the entire shaded surface. Planar – The input texture is projected from an imaginary planar surface, facing towards the negative Z axis. Spherical – The input texture is projected from an imaginary spherical surface. Additional control over the projection is provided through the U Angle and V Angle parameters. Cylindrical – The input texture is projected from an imaginary cylindrical surface. Additional control over the projection is provided through the U Angle parameter. Cubic – The input texture is projected inwards towards the surface, from all six sides of an imaginary box. Triplanar – The equivalent of three Planar projections, one for each axis. The benefit of this mapping type compared to the Cubic projection is that it produces uniformly-sized UV scaling, whereas the Cubic type produces distortions for very tall/slim/narrow objects (unless manually resolved by scaling the Cubic projection using a V-Ray Transform Matrix VOP). Perspective – The input texture is projected towards the surface from the camera provided under the Projection Camera parameter. Object Space – When enabled, the projection is applied in the object space of the currently shaded geometry. This means that object-level transformations applied over the node will affect the scale and/or orientation of the projection. U/V Angle – Only used for the Spherical and Cylindrical projection mapping types. Provides control over the number of texture repetitions. Motion Blur Samples – Determines the number of geometry segments used to approximate motion blur. Objects are assumed to move linearly between geometry samples. For objects rotating at high speed, increase this parameter to get correct motion blur. Note that higher values increase memory consumption since more geometry copies are kept in memory.
Mapping
Wrap U – Specifies if wrapping in the U direction is disabled (No Wrapping), if it Wraps around (Wrap), or if it tiles and mirrors itself (Mirror Tile). Crop U – Enables or disables cropping in the U direction. Wrap V – Specifies if wrapping in the V direction is disabled (No Wrapping), if it Wraps around (Wrap), or if it tiles and mirrors itself (Mirror Tile). Crop V – Enables or disables cropping in the V direction. Wrap W – Specifies if wrapping in the W direction is disabled (No Wrapping), or it Wraps around (Wrap), or if it tiles and mirrors itself (Mirror Tile). Crop W – Enables or disables cropping in the W direction. Use Additional Scale – When enabled, applies an additional scale factor for the texture derivative. |