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@jibbo
jibbo / BitmapUtils.java
Created Jun 12, 2018
[Android] Save JPEG with lesser quality the bigger it is, especially useful to reduce image upload time.
View BitmapUtils.java
private static final int MB = 1000000; // 1MB in bytes
private static final int MIN_SIZE = 3; // in MB
private static final int MAX_SIZE = 20; // in MB
private static final int MAX_QUALITY = 100;
private static final int MIN_QUALITY = 10;
private static final int NORMAL_QUALITY = 90;
/**
* Gets a bitmap and saves it as jpeg.
*
View degress2meters.js
var degrees2meters = function(lon,lat) {
var x = lon * 20037508.34 / 180;
var y = Math.log(Math.tan((90 + lat) * Math.PI / 360)) / (Math.PI / 180);
y = y * 20037508.34 / 180;
return [x, y]
}
lon= -77.035974
lat = 38.898717
@jibbo
jibbo / bob.rb
Last active Aug 29, 2015 — forked from tcgeophysics/bob.rb
Formula for installing Bob (Bob is a free signal-processing and machine learning toolbox)
View bob.rb
require "formula"
#be sure to have the repo homebrew-dupes and homebrew-science
#if not add it with: brew tap Homebrew/homebrew-dupes && brew tap Homebrew/homebrew-science
#after installing brew-pip you have to run pip install all the dependencies listed in the python section
class Bob < Formula
homepage "http://www.idiap.ch/software/bob/docs/releases/last/sphinx/html/index.html"
url "http://www.idiap.ch/software/bob/packages/bob-1.2.2.tar.gz"
sha1 "c557712996ae8a6a1e161026f539d1f1fd108fb0"
@jibbo
jibbo / PaintEraser
Created Oct 30, 2014
How to set a Painter to erase content on a canvas.
View PaintEraser
Paint e = new Paint();
e.setColor(Color.TRANSPARENT);
e.setAlpha(0);
e.setAntiAlias(true);
e.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
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