Struct MapData 

pub struct MapData { /* private fields */ }

Parsed unit-sphere geometry for a globe wireframe with land fill.

Implementations

impl MapData

pub fn load(geo_dir: &Path) -> Result<Self>

Load geometry from a directory containing land_positions.gl, land_contour_indices.gl, and land_triangle_indices.gl (the layout of mullvadvpn-app/dist-assets/geo/).

pub fn embedded() -> Self

Load the geometry that ships in this repository’s assets/geo/ directory, baked into the binary at compile time. Positions are stored as i16 (axis values quantized from [-1, 1]) and all three buffers are zstd-compressed by build.rs; we decode and dequantize once here.

Examples found in repository

examples/smoke.rs (line 11)

fn main() {
    let map = MapData::embedded();
    let area = Rect::new(0, 0, 80, 30);
    for yaw in [0.0_f32, 1.0, 2.0, 3.0] {
        let camera = Camera {
            yaw,
            ..Camera::default()
        };
        let mut buf = Buffer::empty(area);
        Globe::new(&map, camera).render(area, &mut buf);
        println!("--- yaw = {yaw:.2} rad ---");
        for y in 0..area.height {
            let mut line = String::new();
            for x in 0..area.width {
                let sym = buf[(x, y)].symbol();
                line.push(if sym == " " || sym.is_empty() {
                    ' '
                } else {
                    '#'
                });
            }
            println!("{}", line.trim_end());
        }
        println!();
    }
}

pub fn vertex_count(&self) -> usize

Number of vertices on the sphere.

pub fn contour_index_count(&self) -> usize

Number of LINE_STRIP indices including synthesized restart markers.

pub fn triangle_count(&self) -> usize

Number of land triangles (one per three indices).

Trait Implementations

impl Clone for MapData

fn clone(&self) -> MapData

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MapData

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.