Function encode 

pub fn encode(
    format: HeightmapFormat,
    elevations: &[f32],
    width: u32,
    height: u32,
) -> Vec<u8> 

Encode elevations (metres) into a flat width × height × 3 RGB buffer using the chosen format.

Panics

Panics if elevations.len() != (width * height) as usize.