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Converting 3D Points to Screen Space X&Y with Python
 
blastframe
Posted: 28 July 2018 11:25 PM   [ Ignore ]  
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Hello,

I’m trying to get the X&Y pixel coordinates of my polygon plane’s vertices. These are the plane’s 3D vectors followed by the pixel coordinates I’m looking to get:

# Top Left Corner: (-200,200,0) -> 1493,505
# Top Right Corner: (200,200,0) -> 2458,471
# Bottom Left Corner: (-200,-200,0) -> 1524,1712
# Bottom Right Corner: (200,-200,0) -> 2438,1509 

How can I do this in Python? I’ve tried to us BaseDraw’s WC, CS, WS, and WC_V methods, but I’m not sure what to do with their results (which are not in pixels).

WC: Vector(-174.873, 181.224, 1288.966) # Top Left Corner
WC then CS: Vector(472.901, 423.506, 1288.966) # Top Left Corner
WS: Vector(472.901, 423.506, 1288.966) # Top Left Corner
WC_V: Vector(-163.448, 174.118, -151.55) # Top Left Corner
CS: Vector(-25959351, -25959394, 0),Vector(25960649, -25959394, 0),Vector(25960649, 25960606, 0),Vector(-25959351, 25960606, 0) # All four vertices 
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Dr. Sassi
Posted: 29 July 2018 01:19 AM   [ Ignore ]   [ # 1 ]  
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Hi blastframe,

This would be a question for:

http://www.plugincafe.com/forum/default.asp

Where you have asked already this question a little bit earlier.

My best wishes

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Dr. Sassi V. Sassmannshausen Ph.D.
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blastframe
Posted: 29 July 2018 01:42 AM   [ Ignore ]   [ # 2 ]  
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Dr. Sassi - 29 July 2018 01:19 AM

Hi blastframe,

This would be a question for:

http://www.plugincafe.com/forum/default.asp

Where you have asked already this question a little bit earlier.

My best wishes

Ah, my apologies and thank you for the response. I’d seen other posts about Python before I posted here.

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Dr. Sassi
Posted: 29 July 2018 01:54 AM   [ Ignore ]   [ # 3 ]  
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No need to apologize, blastframe, but the best place for any first hand knowledge about C4D’s Python is the plug-in-cafe.

It is always a good idea to ask with the core target, so people can share perhaps a solution that would not fit your specific question, but might solve the problem after all.
In the past 14 years answering in a forum, many of the question were defined by the problem “in the middle”, which often would have meant to patch a problem that was not needed to begin with.

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
Maxon Master Trainer, VES, DCS

Photography For C4D Artists: 200 Free Tutorials.
https://www.youtube.com/user/DrSassiLA/playlists

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