[WiiFlash] The Wiimote z-Depth?

[Brad]

its not the absolute distance between the lights that you're interested 
in, but rather the (relative) distance between those lights as seen from 
the remote ir camera. - ie. as you move the remote away from the sensor 
bar, the  apparent distance between the lights will decrease.  but make 
sure you've got the remote a decent distance away from the sensor bar- 
in my experience it behaves pretty eratically if you bring the remote 
closer than a metre away from the sensor bar.



Merrill, Jason wrote:
> OK, but what exactly are the two points? I don't mean to be dense, but I
> thought the IR points were the actual lights inside the sensor bar.  So
> what is the difference between an IR point's x and the sensor x?  If
> it's actual points in the sensor, then can't you just measure that
> distance with a ruler? LOL.  This is confusing. You said, "So if one
> point is exactly in the middle of the screen" - how is a "point"
> (whatever a point is) in the "middle of the screen" (when the screen is
> not part of the detection hardware)?  What then does Sensor X and Sensor
> Y mean?
>  
>
>
> Jason Merrill
> Bank of America  
> L&LD GT&O 
> eTools & Multimedia Research & Development
>
>
>
>
>  
>
>   
>>> -----Original Message-----
>>> From: wiiflash-bounces at osflash.org 
>>> [mailto:wiiflash-bounces at osflash.org] On Behalf Of Patrick 
>>> Matte | BLITZ
>>> Sent: Tuesday, December 18, 2007 6:25 PM
>>> To: wiiflash at osflash.org
>>> Subject: Re: [WiiFlash] The Wiimote z-Depth?
>>>
>>> Well it's just the distance between the 2 points... the 
>>> points x and y values are from 0 to 1. So if one point is 
>>> exactly in the middle of the screen, it's x is 0.5, and the 
>>> other point could be at 0.75. so you have a distance of 0.25 
>>> in the x axis. Do the same for the y axis.
>>>
>>> And the formula to get the distance between two points is 
>>> Math.sqrt((x*x)+(y*y)); But the formula is conveniently 
>>> available in the point class as a static method. 
>>> flash.geom.Point.distance(point1,point2);
>>>
>>>
>>> BLITZ | Patrick Matte - 310-551-0200 x214
>>>
>>> -----Original Message-----
>>> From: wiiflash-bounces at osflash.org 
>>> [mailto:wiiflash-bounces at osflash.org] On Behalf Of Merrill, Jason
>>> Sent: Tuesday, December 18, 2007 2:17 PM
>>> To: wiiflash at osflash.org
>>> Subject: Re: [WiiFlash] The Wiimote z-Depth?
>>>
>>> OK -thanks! So what does:
>>>
>>> var distance:Number =
>>> flash.geom.Point.distance(wiimote.ir.point1,wiimote.ir.point2);
>>>
>>> ...really tell you? That's the distance of what?
>>>
>>>
>>> Jason Merrill
>>> Bank of America
>>> L&LD GT&O
>>> eTools & Multimedia Research & Development
>>>
>>>
>>>
>>>
>>>
>>>
>>>       
>>>>> -----Original Message-----
>>>>> From: wiiflash-bounces at osflash.org
>>>>> [mailto:wiiflash-bounces at osflash.org] On Behalf Of Patrick Matte | 
>>>>> BLITZ
>>>>> Sent: Tuesday, December 18, 2007 4:53 PM
>>>>> To: wiiflash at osflash.org
>>>>> Subject: Re: [WiiFlash] The Wiimote z-Depth?
>>>>>
>>>>> I don't think you can figure out the real distance per se.
>>>>> The distance between the two points only gives you a reference.
>>>>>
>>>>> But what you could do is walk one meter from the ir sensor and save 
>>>>> that distance value. Then walk 4 meters from the ir emitter 
>>>>>           
>>> and save 
>>>       
>>>>> that value. Then you could extrapolate any value in between 
>>>>>           
>>> those two.
>>>       
>>>>> BLITZ | Patrick Matte - 310-551-0200 x214
>>>>>
>>>>> -----Original Message-----
>>>>> From: wiiflash-bounces at osflash.org
>>>>> [mailto:wiiflash-bounces at osflash.org] On Behalf Of Merrill, Jason
>>>>> Sent: Tuesday, December 18, 2007 1:47 PM
>>>>> To: wiiflash at osflash.org
>>>>> Subject: [WiiFlash] The Wiimote z-Depth?
>>>>>
>>>>> Hey, Fabien's question reminded me of a related question I 
>>>>>           
>>> had.  How 
>>>       
>>>>> do you all figure out the z-depth of the Wiimote from the 
>>>>>           
>>> Sensor bar?  
>>>       
>>>>> Do you use SensorZ somehow or ir1 and
>>>>> ir2 with some trig functions?  have any sample Actionscript 
>>>>>           
>>> code for 
>>>       
>>>>> this?  Thanks.
>>>>>
>>>>> Jason Merrill
>>>>> Bank of America
>>>>> L&LD GT&O
>>>>> eTools & Multimedia Research & Development
>>>>>
>>>>>
>>>>>
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>>>>>           
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>
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