Function compute_subplot_rects 

pub fn compute_subplot_rects(
    figure_width: f64,
    figure_height: f64,
    nrows: usize,
    ncols: usize,
    spacing: f64,
    outer_padding: f64,
) -> Vec<Rect>

Computes subplot positions for a grid of axes.

Returns a Vec<Rect> with one entry per subplot cell in row-major order (left to right, top to bottom). Each rectangle represents the total available area for that subplot — callers should run compute_layout on each rect individually to determine the inner plot area and decoration positions.

Arguments

• figure_width — Total figure width in pixels.
• figure_height — Total figure height in pixels.
• nrows — Number of rows in the subplot grid.
• ncols — Number of columns in the subplot grid.
• spacing — Gap between adjacent subplots in pixels.
• outer_padding — Padding between the figure edges and the outermost subplots.

Panics

Panics if nrows or ncols is zero.