Function wood_grain::wood

#[must_use]pub fn wood(
    width: u32, 
    height: u32, 
    offsetstdev: f64, 
    length_scale: f64, 
    wood_profile: &WoodProfile
) -> RgbImage

• width: width of the image to be generated
• height: height of the image to be generated
• offsetstdev: signifies how large the offset should be (the center of the wood grain is randomly shifted in the x and y directions).
• length_scale: denotes the average length of spacing between grains in pixels.