Wiehann Matthysen wcmatthysen

wcmatthysen / import-osm-data.txt

Last active February 19, 2019 10:49

Import OSM-data into Postgres-database.

	# Normal command on a country-file.
	osm2pgsql --create --hstore --slim -U postgres -d osm-country -H localhost --style openstreetmap-carto.style country.osm.pbf

	# Command for planet-wide import.
	osm2pgsql --create --number-processes 6 --flat-nodes /tmp/flat_nodes.bin --cache 8000 --hstore --slim -U postgres -W -d osm-world -H localhost --style openstreetmap-carto.style ~/planet-latest.osm.pbf

wcmatthysen / rm-eq-files.sh

Last active October 5, 2016 17:15

Remove all files in directory that are copies of given file.

	#!/bin/sh

	find "$2" -type f -exec sh -c 'cmp --silent "{}" "$1"; if [ $? -eq 0 ]; then rm "{}"; fi' \;

wcmatthysen / rotate-libgdx-matrix-math.txt

Last active February 19, 2019 10:51

libgdx: rotate a rectangle shape (matrix math calculation).

	Rectangle rectangle = (Rectangle)shape;

	Vector2 center = new Vector2();
	rectangle.getCenter(center);

	Affine2 transform = new Affine2();
	transform.translate(rectangle.x, rectangle.y + rectangle.height);
	transform.rotate(-rotation);
	transform.translate(-rectangle.x, -rectangle.y - rectangle.height);
	transform.applyTo(center);

wcmatthysen / rotate-libgdx-trig.txt

Last active February 19, 2019 10:51

libgdx: rotate a rectangle shape (manual math calculation).

	Rectangle rectangle = (Rectangle)shape;

	Vector2 center = new Vector2();
	rectangle.getCenter(center);

	float centerX = center.x - rectangle.x;
	float centerY = center.y - rectangle.y - rectangle.height;
	float cos = MathUtils.cosDeg(rotation);
	float sin = MathUtils.sinDeg(rotation);
	float x = centerX * cos + centerY * sin;