“sWood” is a solid texture.
| Argument Name | Absolute Range | Useful Range | Default | Description |
| xmult | -infinity, infinity | -10, 10 | 1.0 | Scaling factors for extent of pix file |
| ymult | -infinity, infinity | -10, 10 | 1.0 | " " " " |
| xoffset | -infinity, infinity | -10, 10 | 0.0 | Offsets for position of pix file |
| yoffset | -infinity, infinity | -10, 10 | 0.0 | " " " |
| xamplitude | -infinity, infinity | 0, 10 | 0.1 | Amplitude of noise function for x direction |
| yamplitude | -infinity, infinity | 0, 10 | 0.1 | Amplitude of noise function for y direction |
| center_u | -3,3 | -3,3 | 0.5 | Origin for growth of ring layers |
| center_v | -3, 3 | -3, 3 | 0.5 | “ “ “ |
| grain_contrast | 0, 1 | 0, 1 | 1.0 | Contrast between vein and wood color |
| grain_spacing | 0, 1 | 0, 1 | 0.01 | Spacing of grain dots |
| grain_color (triple) | 0, infinity | 0, 255 | 30, 10, 0 | Color of the grain |
| filler_color (triple) | 0, infinity | 0, 255 | 210,160,120 | Color of the filler part between rings |
| vein_color (triple) | 0, infinity | 0, 255 | 40, 20, 10 | Color of the vein part of rings |
| vein_spread | 0, infinity | 0, 3 | 0.25 | Diffusion of vein color into the rings |
| layer_size | 0, infinity | 0, 0.5 | 0.02 | Mean spacing between rings |
| randomness | 0, 1 | 0, 1 | 0.5 | Degree of randomization of layers |
| age | 0, infinity | 0, 100 | 20.0 | Time in years for ring layer thickness to reach maximum |
| xripples | 0, infinity | 0, 100 | 1.0 | Fundamental frequencies for noise function |
| yripples | 0, infinity | 0, 100 | 1.0 | " " |
| zripples | 0, infinity | 0, 100 | 1.0 | " " |
| level_min | 0, infinity | 0, 50 | 0.0 | Minimum allowed level of iteration |
| level_max | 0, infinity | 0, 50 | 20.0 | Maximum allowed level of iteration |
| ratio | 0, 1 | 0, 1 | 0.707 | Ratio for fractal noise |
| transformation_name | no default. |
