pub fn validate_heightfield(
heights: &[f64],
rows: usize,
cols: usize,
scale_x: f64,
scale_z: f64,
) -> Result<()>Expand description
Validate a height-field descriptor.
Checks that rows >= 2, cols >= 2, scale_x > 0, scale_z > 0, and
heights.len() == rows * cols.