| Arguments |
"displacement amplitude" | Type: | LtFloat |
| Default: | 0.2 |
| Range: | [ 0.0, inf ] |
| Hint: | - |
"trunk direction" | Type: | LtVector |
| Default: | ( 1.0, 0.0, 0.0 ) |
| Range: | [ -inf, inf ], [ -inf, inf ], [ -inf, inf ] |
| Hint: | [ -1.0, 1.0 ], [ -1.0, 1.0 ], [ -1.0, 1.0 ] |
| "trunk centre" | Type: | LtPoint |
| Default: | ( 0.0, 0.0, 0.0 ) |
| Range: | [ -inf, inf ], [ -inf, inf ], [ -inf, inf ] |
| Hint: | - |
| "scale" | Type: | LtFloat |
| Default: | 0.03 |
| Range: | [ 1e-006, inf ] |
| Hint: | [ 0.01, 1000.0 ] |
| "ring displacement" | Type: | LtFloat |
| Default: | 0.5 |
| Range: | [ -1, 1 ] |
| Hint: | - |
"ring fuzz in" | Type: | LtFloat |
| Default: | 0.4 |
| Range: | [ 0.0, 1.0 ] |
| Hint: | [ 0.1, 1.0 ] |
| "ring fuzz out" | Type: | LtFloat |
| Default: | 0.1 |
| Range: | [ 0.0, 1.0 ] |
| Hint: | [ 0.1, 1.0 ] |
| "ring width" | Type: | LtFloat |
| Default: | 0.4 |
| Range: | [ 0.0, 1.0 ] |
| Hint: | [ 0.1, 0.6 ] |
| "gnarl" | Type: | LtFloat |
| Default: | 0.2 |
| Range: | [ 0.0, inf ] |
| Hint: | [ 0.0, 2.0 ] |
| "grain" | Type: | LtFloat |
| Default: | 0.2 |
| Range: | [ 0.0, inf ] |
| Hint: | [ 0.0, 2.0 ] |
| "ring fuzz grain" | Type: | LtFloat |
| Default: | 0.1 |
| Range: | [ 0.0, inf ] |
| Hint: | [ 0.0, 0.5 ] |
| "grain scale" | Type: | LtFloat |
| Default: | 0.2 |
| Range: | [ 1e-006, inf ] |
| Hint: | [ 0.1, 2.0 ] |
| |
|
| Description |
This shader is simply a copy of the general-purpose
"wood" shader where all the argument values
have been pre-chosen to produce the appearance of
pine.
The arguments may of course be fine-tuned to suit
particular jobs---for a full description of all the
arguments please refer to the description of the
"wood" shader itself.
The following parameters however merit description
here as you may have to choose sensible values even if
you are happy with the pine-like appearance:
- The orientation of the tree from which the wood is taken
is specified by a point which lies on the axis
in argument "trunk centre" and a direction vector
pointing along the axis of the tree in argument
"trunk direction".
- An overall scaling factor is supplied in argument
"scale", which determines the radius
difference of two adjacent rings.
0.01 means that there are 100 rings per unit length
along the trunk radius. Choose a value appropriate to
the units in which your geometry is modelled.
The default value is appropriate for modelling in metres.
- An overall scaling factor for displacement is supplied in
"displacement amplitude" argument.
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