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@sinc
sinc / gist:2409107
Created April 17, 2012 21:16
get rotation matrix from accelerometer
CMRotationMatrix rotationMatrixFromGravity(float x, float y, float z)
{
// The Z axis of our rotated frame is opposite gravity
vec3f_t zAxis = vec3f_normalize(vec3f_init(-x, -y, -z));
// The Y axis of our rotated frame is an arbitrary vector perpendicular to gravity
// Note that this convention will have problems as zAxis.x approaches +/-1 since the magnitude of
// [0, zAxis.z, -zAxis.y] will approach 0
vec3f_t yAxis = vec3f_normalize(vec3f_init(0, zAxis.z, -zAxis.y));
@Olical
Olical / about.md
Created January 31, 2012 14:19
Fullscreen API class

This is a wrapper class for the fullscreen API. It should make it easier to use.

It is supported in the latest versions of Chrome and Safari. It will be supported in Firefox in version 10 (which is released tomorrow).

All calls to activate fullscreen have to be made from a user action. So a button click for example.

Here are some useful links. To run the example it has to be run on its own page, not an iframe. So I have linked to where the iframe points in jsFiddle.

@darktable
darktable / MiniJSON.cs
Created November 30, 2011 23:08
Unity3D: MiniJSON Decodes and encodes simple JSON strings. Not intended for use with massive JSON strings, probably < 32k preferred. Handy for parsing JSON from inside Unity3d.
/*
* Copyright (c) 2013 Calvin Rien
*
* Based on the JSON parser by Patrick van Bergen
* http://techblog.procurios.nl/k/618/news/view/14605/14863/How-do-I-write-my-own-parser-for-JSON.html
*
* Simplified it so that it doesn't throw exceptions
* and can be used in Unity iPhone with maximum code stripping.
*
* Permission is hereby granted, free of charge, to any person obtaining
@jsermeno
jsermeno / perspectiveProject.js
Created June 5, 2011 03:19
Three.js Transform 3D coordinates to screen coordinates and back in perspective projection - http://catchvar.com/threejs-game-transforming-isometric-screen-co
var
projector = new THREE.Projector(),
p3D = new THREE.Vector3(25, 15, 9),
p2D;
p2D = projector.projectVector(p3D, camera);
p3D = projector.unprojectVector(p2D, camera);