Does PCanvas support multiple PCameras to obtain different views for the same PNode?

[Paul Peng]

Dear all, 

I'm a NewBee to piccolo and I really enjoy to play with it in Java. I'd like to ask whether PCanvas support multiple PCameras to obtain different views for the same PNode ?

When I read the Piccolo Pattern in home page, I noticed it said "Each PCanvas is associated with a PCamera. But all cameras are not necessarily directly associated with a PCanvas." Is it mean a PCanvas actually can have or assigned multiple PCamera ?

Thank you for your time and suggestion.

[Heiko Haller]

Dear Paul, 

maybe this is confusing you: PCanvas is _not_ the background, where PNodes sit an where the PCamera(s) look onto. In Piccolo2d, his background, elsewhere often called a “canvas” is a PLayer. 

A PCanvas is a Swing Canvas, it is the viewport that a PCamera projects to. Like a screen, that shows to the user, what the camera sees.

So: Yes, there can be multiple PCameras showing different views of a PNode. But you would either need to use multiple PCanvases as well, that show those two views – Like having multiple screens or a split-screen setting. Or, instead of projecting to a PCanvas, a PCamera can also show its picture in another PNode. That would compare to showing someone watching a screen that shows the other view.

Hope that helps, and I did not confuse you.

Cheers - Heiko

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[Paul Peng]

Dear Haller, 

Thank you for your time. You did explain clean. Please correct me if I summarize wrong here. 

1) PCanvas like screen not background in Piccolo2D

2) PCamera will project to PCanvas to show the user what it looks at

3) Thus, If I want to have a different views of a PNode. I can use multiple PCameras watch different parts of the PNode, and projects to multiple PCanvases.

Cheers

[Heiko Haller]

correct.

[Paul Peng]

Dear Haller, 

Thank you for your time. You did explain clean. Please correct me if I summarize wrong here. 

1) PCanvas like screen not background in Piccolo2D

2) PCamera will project to PCanvas to show the user what it looks at

3) Thus, If I want to have a different views of a PNode. I can use multiple PCameras watch different parts of the PNode, and projects to multiple PCanvases.

Cheers

[Paul Peng]

Dear Haller,

Thank you for your clarify again. 

I read other post in the Piccolo2D group, it mentioned the BirdsEyeViewExample.java is a good example to learn multiple views. I did some adjusts to source codes based on your suggestions just now. If you are convenient, please take a look and point out whether I'm at the right track. 

Thank you for your time and helps. :D

Cheers and Best regards 

Paul