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gipy: wip: trying to load large files

pull/3205/head
frederic wagner 2023-12-08 17:52:53 +01:00
parent 7e6b77ff4e
commit 8a61cc217a
1 changed files with 58 additions and 48 deletions
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106
apps/gipy/app.js
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@ -95,26 +95,30 @@ function compute_eta(hour, minutes, approximate_speed, remaining_distance) {
}
class TilesOffsets {
constructor(buffer, offset) {
let type_size = Uint8Array(buffer, offset, 1)[0];
constructor(filename, offset) {
let header = E.toArrayBuffer(s.read(filename, offset, 4));
let type_size = Uint8Array(header, 0, 1)[0];
offset += 1;
this.entry_size = Uint8Array(buffer, offset, 1)[0];
this.entry_size = Uint8Array(header, 1, 1)[0];
offset += 1;
let non_empty_tiles_number = Uint16Array(buffer, offset, 1)[0];
let non_empty_tiles_number = Uint16Array(header, 2, 1)[0];
offset += 2;
this.non_empty_tiles = Uint16Array(buffer, offset, non_empty_tiles_number);
let bytes = (type_size==24)?3:2;
let buffer = E.toArrayBuffer(s.read(filename, offset, 2*non_empty_tiles_number+bytes*non_empty_tiles_number));
this.non_empty_tiles = Uint16Array(buffer, 0, non_empty_tiles_number);
offset += 2 * non_empty_tiles_number;
if (type_size == 24) {
this.non_empty_tiles_ends = Uint24Array(
buffer,
offset,
2*non_empty_tiles_number,
non_empty_tiles_number
);
offset += 3 * non_empty_tiles_number;
} else if (type_size == 16) {
this.non_empty_tiles_ends = Uint16Array(
buffer,
offset,
2*non_empty_tiles_number,
non_empty_tiles_number
);
offset += 2 * non_empty_tiles_number;
@ -153,27 +157,29 @@ class TilesOffsets {
}
class Map {
constructor(buffer, offset, filename) {
constructor(filename, offset) {
// header
let color_array = Uint8Array(buffer, offset, 3);
let header = E.toArrayBuffer(s.read(filename, offset, 43));
let color_array = Uint8Array(header, 0, 3);
this.color = [
color_array[0] / 255,
color_array[1] / 255,
color_array[2] / 255,
];
offset += 3;
this.first_tile = Int32Array(buffer, offset, 2); // absolute tile id of first tile
this.first_tile = Int32Array(header, 3, 2); // absolute tile id of first tile
offset += 2 * 4;
this.grid_size = Uint32Array(buffer, offset, 2); // tiles width and height
this.grid_size = Uint32Array(header, 11, 2); // tiles width and height
offset += 2 * 4;
this.start_coordinates = Float64Array(buffer, offset, 2); // min x and y coordinates
this.start_coordinates = Float64Array(header, 19, 2); // min x and y coordinates
offset += 2 * 8;
let side_array = Float64Array(buffer, offset, 1); // side of a tile
let side_array = Float64Array(header, 35, 1); // side of a tile
this.side = side_array[0];
offset += 8;
// tiles offsets
let res = new TilesOffsets(buffer, offset);
let res = new TilesOffsets(filename, offset);
this.tiles_offsets = res[0];
offset = res[1];
@ -296,26 +302,30 @@ class Map {
}
class Interests {
constructor(buffer, offset) {
this.first_tile = Int32Array(buffer, offset, 2); // absolute tile id of first tile
constructor(filename, offset) {
let header = E.toArrayBuffer(s.read(filename, offset, 40));
this.first_tile = Int32Array(header, 0, 2); // absolute tile id of first tile
offset += 2 * 4;
this.grid_size = Uint32Array(buffer, offset, 2); // tiles width and height
this.grid_size = Uint32Array(header, 8, 2); // tiles width and height
offset += 2 * 4;
this.start_coordinates = Float64Array(buffer, offset, 2); // min x and y coordinates
this.start_coordinates = Float64Array(header, 16, 2); // min x and y coordinates
offset += 2 * 8;
let side_array = Float64Array(buffer, offset, 1); // side of a tile
let side_array = Float64Array(header, 32, 1); // side of a tile
this.side = side_array[0];
offset += 8;
let res = new TilesOffsets(buffer, offset);
let res = new TilesOffsets(filename, offset);
offset = res[1];
this.offsets = res[0];
let end = this.offsets.end_offset();
this.binary_interests = new Uint8Array(end);
let buffer = E.toArrayBuffer(s.read(filename, offset, end));
let binary_interests = Uint8Array(buffer, offset, end);
for (let i = 0; i < end; i++) {
this.binary_interests[i] = binary_interests[i];
}
this.binary_interests = binary_interests;
//TODO: check we don't need copy anymore
// for (let i = 0; i < end; i++) {
// this.binary_interests[i] = binary_interests[i];
// }
offset += end;
return [this, offset];
}
@ -374,14 +384,15 @@ class Status {
this.scale_factor = diagonal_third / maps[0].side; // multiply geo coordinates by this to get pixels coordinates
if (this.path !== null) {
let r = [0];
//TODO: float32 ??
let r = new Float64Array(this.path.len);
// let's do a reversed prefix computations on all distances:
// loop on all segments in reversed order
let previous_point = null;
for (let i = this.path.len - 1; i >= 0; i--) {
let point = this.path.point(i);
if (previous_point !== null) {
r.unshift(r[0] + point.distance(previous_point));
r[i] = r[i+1] + point.distance(previous_point);
}
previous_point = point;
}
@ -792,7 +803,9 @@ class Status {
displaying = true;
g.clear();
if (this.screen == MAP) {
console.log("displaying map");
this.display_map();
console.log("done displaying map");
if (this.position !== null) {
// start_profiling();
this.display_path();
@ -1141,8 +1154,11 @@ function load_gps(filename) {
.drawString(filename, 0, g.getHeight() - 30);
g.flip();
let buffer = s.readArrayBuffer(filename);
let file_size = buffer.length;
let file_size;
{
let buffer = s.readArrayBuffer(filename);
file_size = buffer.length;
}
let offset = 0;
let path = null;
@ -1150,60 +1166,52 @@ function load_gps(filename) {
let maps = [];
let interests = null;
while (offset < file_size) {
let block_type = Uint8Array(buffer, offset, 1)[0];
let block_type = Uint8Array(E.toArrayBuffer(s.read(filename, offset, 1)))[0];
offset += 1;
if (block_type == 0) {
// it's a map
console.log("loading map");
let res = new Map(buffer, offset, filename);
let res = new Map(filename, offset);
let map = res[0];
offset = res[1];
maps.push(map);
} else if (block_type == 2) {
console.log("loading path");
let res = new Path(buffer, offset);
let res = new Path(filename, offset);
path = res[0];
offset = res[1];
} else if (block_type == 3) {
console.log("loading interests");
let res = new Interests(buffer, offset);
let res = new Interests(filename, offset);
interests = res[0];
offset = res[1];
} else if (block_type == 4) {
console.log("loading heights");
let heights_number = path.points.length / 2;
heights = Int16Array(buffer, offset, heights_number);
let buffer = E.toArrayBuffer(s.read(filename, offset, heights_number*2));
heights = Int16Array(buffer);
offset += 2 * heights_number;
} else {
console.log("todo : block type", block_type);
}
}
// checksum file size
if (offset != file_size) {
console.log("invalid file size", file_size, "expected", offset);
let msg = "invalid file\nsize " + file_size + "\ninstead of" + offset;
E.showAlert(msg).then(function () {
E.showAlert();
start_gipy(path, maps, interests, heights);
});
} else {
start_gipy(path, maps, interests, heights);
}
start_gipy(path, maps, interests, heights);
}
class Path {
constructor(buffer, offset) {
let points_number = Uint16Array(buffer, offset, 1)[0];
constructor(filename, offset) {
let points_number = Uint16Array(E.toArrayBuffer(s.read(filename, offset, 2)))[0];
offset += 2;
let waypoints_len = Math.ceil(points_number / 8.0);
let buffer = E.toArrayBuffer(s.read(filename, offset, points_number * 2 + waypoints_len));
// path points
this.points = Float64Array(buffer, offset, points_number * 2);
this.points = Float64Array(buffer, 0, points_number);
offset += 8 * points_number * 2;
// path waypoints
let waypoints_len = Math.ceil(points_number / 8.0);
this.waypoints = Uint8Array(buffer, offset, waypoints_len);
this.waypoints = Uint8Array(buffer, points_number * 2, waypoints_len);
offset += waypoints_len;
return [this, offset];
@ -1387,7 +1395,9 @@ function start_gipy(path, maps, interests, heights) {
NRF.sleep(); // disable bluetooth completely
}
console.log("creating status");
status = new Status(path, maps, interests, heights);
console.log("done creating status");
setWatch(
function () {