Comments on: Penner easing for c++ http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/?utm_source=rss&utm_medium=rss&utm_campaign=penner-easing-cpp desearch and revelopment Mon, 10 Oct 2011 07:07:19 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: homework 2 – algo http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-130460 homework 2 – algo Tue, 07 Feb 2012 16:52:00 +0000 http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-130460 [...] in class, we used powf to shape a linear signal.  there are more advanced ways to do this (for easing and out, and for snap to, etc).  Some of these have been collected by robert penner as “easing equations”.  some folks have ported this from AS to c++, you can find them here & here [...] [...] in class, we used powf to shape a linear signal.  there are more advanced ways to do this (for easing and out, and for snap to, etc).  Some of these have been collected by robert penner as “easing equations”.  some folks have ported this from AS to c++, you can find them here & here [...]

]]> By: *drawpoints » Tweener for C++ *drawpoints – 3D technologies http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-129396 *drawpoints » Tweener for C++ *drawpoints – 3D technologies Tue, 07 Feb 2012 05:37:00 +0000 http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-129396 [...] [...] [...] [...]

]]> By: Jesus http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-121433 Jesus Tue, 07 Feb 2012 23:55:00 +0000 http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-121433 Muy bueno!!! Muchas gracias... Muy bueno!!! Muchas gracias…

]]> By: jesus gollonet http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-114885 jesus gollonet Tue, 07 Feb 2012 10:29:00 +0000 http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-114885 hey neewok. yep, the linear "easing" is just absence of acceleration or deceleration, so all the movements have the same behaviour. the reason for having the methods there is just to have consistency with all the other movements. Btw, although I haven't touched them in ages, they have a home in github now http://github.com/jesusgollonet/ofpennereasing/tree/master best, jesús. hey neewok.

yep, the linear “easing” is just absence of acceleration or deceleration, so all the movements have the same behaviour. the reason for having the methods there is just to have consistency with all the other movements.

Btw, although I haven’t touched them in ages, they have a home in github now

http://github.com/jesusgollonet/ofpennereasing/tree/master

best,
jesús.

]]> By: Neewok http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-114869 Neewok Tue, 07 Feb 2012 21:10:00 +0000 http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-114869 Hello Jesus, I know your post is a bit old, but I was looking for an implementation of penner easing in c++ to use with openframeworks, and that was exactly what I needed. I just noticed that the Linear equations (easeNone, easeIn, easeOut and easeInOut) all are the same, is that normal ? Anyway, thanks a lot for this :) Hello Jesus,
I know your post is a bit old, but I was looking for an implementation of penner easing in c++ to use with openframeworks, and that was exactly what I needed.

I just noticed that the Linear equations (easeNone, easeIn, easeOut and easeInOut) all are the same, is that normal ?

Anyway, thanks a lot for this :)

]]> By: jesus gollonet http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-77458 jesus gollonet Tue, 07 Feb 2012 13:33:00 +0000 http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-77458 hey thanks rlyeh. no way i'd have guessed that! I'll try and fix it asap. hey thanks rlyeh. no way i’d have guessed that!

I’ll try and fix it asap.

]]> By: rlyeh http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-77434 rlyeh Tue, 07 Feb 2012 21:44:00 +0000 http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-77434 Quad/Out current implementation may lead to errors depending on the compiler. I guess it's broken on GCC. Here's a fix: t /= d/2; if(t < 1) return (1.0/2*t*t); t–; return -1.0/2 * (t*(t-2) - 1); Quad/Out current implementation may lead to errors depending on the compiler. I guess it’s broken on GCC.

Here’s a fix:

t /= d/2;

if(t < 1)
return (1.0/2*t*t);

t–;

return -1.0/2 * (t*(t-2) – 1);

]]> By: makingThingsMove » homework 2 http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-75095 makingThingsMove » homework 2 Tue, 07 Feb 2012 22:05:00 +0000 http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-75095 [...] http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/ http://code.google.com/p/cppglue/source/browse/#svn/trunk/ofxCppGlue/src/Animation/Easings [...] [...] http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/ http://code.google.com/p/cppglue/source/browse/#svn/trunk/ofxCppGlue/src/Animation/Easings [...]

]]> By: jesus gollonet http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-58876 jesus gollonet Tue, 07 Feb 2012 23:33:00 +0000 http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-58876 hey phil, can you explain what you see? or if the error is in any or the three easing methods? They seem to be ok on my computer. best! hey phil, can you explain what you see? or if the error is in any or the three easing methods? They seem to be ok on my computer.

best!

]]> By: jesus gollonet http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-58873 jesus gollonet Tue, 07 Feb 2012 23:14:00 +0000 http://www.jesusgollonet.com/blog/2007/09/24/penner-easing-cpp/#comment-58873 whoops, thanks for spotting it. I'll look into it and upload the corrected version. whoops, thanks for spotting it. I’ll look into it and upload the corrected version.

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