[etoys-dev] Forward direction (was Re: First draft of Etoys Reference Manual Glossary)

Bert Freudenberg bert at freudenbergs.de
Wed Sep 26 10:02:58 EDT 2012

On 2012-09-26, at 15:57, Steve Thomas <sthomas1 at gosargon.com> wrote:

> On Wed, Sep 26, 2012 at 9:02 AM, Bert Freudenberg <bert at freudenbergs.de> wrote:
>> On 2012-09-26, at 05:08, Steve Thomas <sthomas1 at gosargon.com> wrote:
>>>  changing forward direction should not IMNSHBOWO change heading.  
>> Wrong indeed ;) It's actually quite simple:
> Not the first or last time.  The only thing good about being wrong is when I find out I learn something new!  Thanks. 
>> One way to think about it is that the forward direction describes the rotation as seen from the inside of the object, and heading is the rotation as seen from outside. You almost never have to use the numerical value of the forward direction because it only describes in which orientation the object was painted.
> This is perhaps the best and simplest explanation yet.
>> HTH,
> It definetly helps. 

Great! Maybe you could come up with better help balloons for these tiles ...

- Bert -

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