102 lines
2.7 KiB
JavaScript
102 lines
2.7 KiB
JavaScript
/**
|
|
* Tileserver routes for Express app
|
|
*
|
|
*/
|
|
import express from 'express';
|
|
|
|
import { get_bbox, render_tile } from './tile';
|
|
import { strictParseInt } from './parse';
|
|
|
|
// tiles router
|
|
const router = express.Router()
|
|
|
|
// basic geometry tiles
|
|
router.get('/outline/:z/:x/:y.png', function(req, res) {
|
|
const bbox = get_bbox(req.params)
|
|
const table_def = 'geometries'
|
|
const style_def = ['polygon']
|
|
render_tile(bbox, table_def, style_def, function(err, im) {
|
|
if (err) throw err
|
|
|
|
res.writeHead(200, {'Content-Type': 'image/png'})
|
|
res.end(im.encodeSync('png'))
|
|
})
|
|
});
|
|
|
|
// highlight single geometry
|
|
router.get('/highlight/:z/:x/:y.png', function(req, res) {
|
|
const { highlight } = req.query
|
|
const geometry_id = strictParseInt(highlight);
|
|
if(isNaN(geometry_id)){
|
|
res.status(400).send({error:'Bad parameter'})
|
|
return
|
|
}
|
|
const bbox = get_bbox(req.params)
|
|
const table_def = `(
|
|
SELECT
|
|
g.geometry_id = ${geometry_id} as focus,
|
|
b.location_number as location_number,
|
|
g.geometry_geom
|
|
FROM
|
|
geometries as g,
|
|
buildings as b
|
|
WHERE
|
|
g.geometry_id = b.geometry_id
|
|
) as highlight`
|
|
const style_def = ['highlight']
|
|
render_tile(bbox, table_def, style_def, function(err, im) {
|
|
if (err) throw err
|
|
|
|
res.writeHead(200, {'Content-Type': 'image/png'})
|
|
res.end(im.encodeSync('png'))
|
|
})
|
|
});
|
|
|
|
// date_year choropleth
|
|
router.get('/date_year/:z/:x/:y.png', function(req, res) {
|
|
const bbox = get_bbox(req.params)
|
|
// const table_def = 'geometries'
|
|
const table_def = `(
|
|
SELECT
|
|
b.date_year as date_year,
|
|
g.geometry_geom
|
|
FROM
|
|
geometries as g,
|
|
buildings as b
|
|
WHERE
|
|
g.geometry_id = b.geometry_id
|
|
) as outline`
|
|
const style_def = ['date_year']
|
|
render_tile(bbox, table_def, style_def, function(err, im) {
|
|
if (err) throw err
|
|
|
|
res.writeHead(200, {'Content-Type': 'image/png'})
|
|
res.end(im.encodeSync('png'))
|
|
})
|
|
});
|
|
|
|
// date_year choropleth
|
|
router.get('/size_storeys/:z/:x/:y.png', function(req, res) {
|
|
const bbox = get_bbox(req.params)
|
|
// const table_def = 'geometries'
|
|
const table_def = `(
|
|
SELECT
|
|
(b.size_attic + b.size_core) as size_storeys,
|
|
g.geometry_geom
|
|
FROM
|
|
geometries as g,
|
|
buildings as b
|
|
WHERE
|
|
g.geometry_id = b.geometry_id
|
|
) as outline`
|
|
const style_def = ['size_storeys']
|
|
render_tile(bbox, table_def, style_def, function(err, im) {
|
|
if (err) throw err
|
|
|
|
res.writeHead(200, {'Content-Type': 'image/png'})
|
|
res.end(im.encodeSync('png'))
|
|
})
|
|
});
|
|
|
|
export default router;
|