values given by vive-diy-position-sensor-geometry-getter

[HiruniNuwanthika]

What are the details included in the rotation matrix of each base station?

As I understood, In https://github.com/ashtuchkin/vive-diy-position-sensor-geometry-getter it gives First three values are the base station center points. What I cannot understand is the next 6 values given. (values next to the word matrix)

Please explain it to me... Thank you!

[ashtuchkin]

It's the non-zero values of rotation matrix. A matrix is technically 3x3, but the diagonal is zeros, so that leaves us with 6 numbers.

Alexander Shtuchkin

On Tue, Aug 28, 2018 at 12:49 PM HiruniNuwanthika notifications@github.com wrote:

What are the details included in the rotation matrix of each base station?

As I understood, In https://github.com/ashtuchkin/vive-diy-position-sensor-geometry-getter it gives First three values are the base station center points. What I cannot understand is the next 6 values given. (values next to the word matrix)

Please explain it to me... Thank you!

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/ashtuchkin/vive-diy-position-sensor/issues/58, or mute the thread https://github.com/notifications/unsubscribe-auth/AAmVHYo8SB2E3kjL6NJI2JNXQvYy96Zkks5uVZ6rgaJpZM4WQR-4 .

[HiruniNuwanthika]

Thank you for your explanation. But it will be more helpful if you can give me a precise answer. What is the rotation matrix? is it X,Y,Z coordinate positions?

Thank you!

[ashtuchkin]

No, it's the rotation matrix - sines and cosines of corresponding angles. See https://en.wikipedia.org/wiki/Rotation_matrix#In_three_dimensions

I also see in the code that it expects 9 values there, sorry for confusion. 6 won't make it.

[HiruniNuwanthika]

I understood it completely... Thank you!!!

[HiruniNuwanthika]

According to my understanding, The values that are finally printed on the terminal is fix value, x, y, z, distance between 2 lines. What is considered as the center point of those given values?

Thank you!!!

[ashtuchkin]

Not sure I understand the question.. xyz is the center. Distance between the lines can be used to get a sense of accuracy of the position estimate (although not directly).

On Fri, Aug 31, 2018, 02:57 HiruniNuwanthika notifications@github.com wrote:

According to my understanding, The values that are finally printed on the terminal is fix value, x, y, z, distance between 2 lines. What is considered as the center point of those given values?

Thank you!!!

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/ashtuchkin/vive-diy-position-sensor/issues/58#issuecomment-417584260, or mute the thread https://github.com/notifications/unsubscribe-auth/AAmVHRC0gHvRJ6fkFksLwYVI2xvwleO_ks5uWOxJgaJpZM4WQR-4 .

[HiruniNuwanthika]

Thank you!!! I understood it...

Now I have another problem. Is there a method to track another set of three photodiodes? how should I do the configurations? Thank you!!!

[ashtuchkin]

If you want to track them as independent objects, then just add them to your config like this:

<your base station config>

sensor1 pin 12 positive  
object1 sensor1  
stream1 position object1 > usb_serial  

sensor2 pin 13 positive  
object2 sensor2  
stream2 position object2 > usb_serial  

..same thing for third and fourth ones  

If, on the other hand, you want to track them as a single object, then that is not supported, sorry.

[HiruniNuwanthika]

I want to track them as independent objects. Thank you very much for your answer......

[ashtuchkin]

This is where it's coming from https://github.com/ashtuchkin/vive-diy-position-sensor/blob/master/src/input.cpp#L103

What's the config you're using?

[jayaramanrp]

If you want to track them as independent objects, then just add them to your config like this:

<your base station config>

sensor1 pin 12 positive  
object1 sensor1  
stream1 position object1 > usb_serial  

sensor2 pin 13 positive  
object2 sensor2  
stream2 position object2 > usb_serial  

where to add the second independent object detail in the code? it would be helpful, if you share some knowledge.

[jayaramanrp]

If you want to track them as independent objects, then just add them to your config like this:

<your base station config>

sensor1 pin 12 positive  
object1 sensor1  
stream1 position object1 > usb_serial  

sensor2 pin 13 positive  
object2 sensor2  
stream2 position object2 > usb_serial  

where to add the second independent object detail in the code? it would be helpful, if you share some knowledge.

got the answer:

open cmd (in windows) where TYtools are located. enter into config mode by pressing "!" then type the folowing : reset

enter the based station geometry (that you calculated) or you can find the default in settings in src/settings.cpp:17 to 24

write continue

-enjoy