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how to use RVPaint with Python ?

nicolas

November 16, 2015 02:42

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Hi,

Iam trying to draw a cube with RVpaint but can't figure it out. This is what i got at the moment :

nodetxt = 'sourceGroup000000_paint'
frame = commands.frame()
user = 'test'

points = [[0.0,0.0],[0.1,0.0],[0.1,0.1],[0.0,0.1]]

node = '%s.pen:%s:%s:%s' % (nodetxt,0,frame, user)

commands.newProperty('%s.points' % node, commands.FloatType, 2)
commands.newProperty('%s.color' % node, commands.FloatType, 4)
commands.newProperty('%s.width' % node, commands.FloatType, 1)
commands.newProperty('%s.active' % node, commands.IntType, 1)
commands.newProperty('%s.brush' % node, commands.StringType, 1)

for point in points:
  commands.setFloatProperty('%s.points' % node,  point, True)

commands.setFloatProperty('%s.color' % node, [ 1.0, 0.0, 0.0, 0.5 ], True)
commands.setFloatProperty('%s.width' % node, [width], True)
commands.setIntProperty('%s.active' % node, [ 1 ], True)
commands.setStringProperty('%s.brush' % node, [ 'circle' ], True)

 

Am i missing something ? I can draw RVOverlay without any issue, but RvPaint doesnt seem to work for me ...

 

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5 comments

• 0
  
  Jon Morley November 16, 2015 07:43

  Hi Nicolas,

  Could you please save the resulting session file and send that to us?

  I think you want to set the points property all at once rather than in a for loop like so:

  commands.setFloatProperty('%s.points' % node,  points, True)

  Thanks,
  Jon

• 0
  
  nicolas November 17, 2015 05:07

  Yes, i join an RV session file here.

   

  setting "points" at once with a list such as

  commands.setFloatProperty('%s.points' % node,  points, True)

  return this error:

  <!--StartFragment-->ERROR: Bad argument (1) to function commands.setFloatProperty: expecting float 

• 0
  
  Jon Morley November 18, 2015 17:33

  Hi Nicolas,

  It appears that structuring your float input as seen in the session file is not necessary. I was successful using:

  points = [0.0,0.0,0.1,0.0,0.1,0.1,0.0,0.1]
  rv.commands.setFloatProperty('%s.points' % node,  point, True)

  Please give that a shot and tell me if it works for you as well.

  Thanks,
  Jon

• 0
  
  nicolas November 19, 2015 03:12

  Thanks for the answer Jon,

  Using your code doesn't give any error, but i don't see anything drawing on screen either. Does it give you the result you expected on your side ? If yes, could you send me the rest of the code you used please ?

• 0
  
  Jon Morley November 19, 2015 14:34

  Hi Nicolas,

  I used rvshlell connected to a running RV to send the remote-pyeval command:

  rv.commands.setFloatProperty('defaultSequence_p_sourceGroup000000."pen:1:1:jon".points',  [0.0,0.0,0.1,0.0,0.1,0.1,0.0,0.1], True)

  It worked to draw a somewhat centered backwards "C" shape. That seems to fit the points you provided when you take into consideration the annotation tool attempts to draw a continuous stroke through the points. It doesn't simply connect the dots.

  Perhaps it would be better to know your larger picture goals here. What are you trying to accomplish?

  Thanks,
  Jon