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  #1  
Old 07-16-2009, 11:46 AM
durf durf is offline
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Join Date: Feb 2009
Posts: 61
mouse link

Hello,

Is there a way to link the mouse to an obj rather then using ppt to an object?

Thanks
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  #2  
Old 07-16-2009, 12:17 PM
durf durf is offline
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Join Date: Feb 2009
Posts: 61
I tried viz.link(viz.Mouse, box) and all I can get it to do is move side to side and not very much. I even tried this to improve the amount it moves, boxLink.postScale([4,1,6],target = viz.LINK_FULL_OP).

my view is a straight down view(IE view would be on a ceiling looking straight down on the floor.)

Is there a way to move the box in a x,z movement?
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  #3  
Old 07-20-2009, 10:03 AM
farshizzo farshizzo is offline
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Join Date: Mar 2003
Posts: 2,849
The problem is that the mouse position is in 2D coordinates, and your model is in 3D coordinates, so there isn't an easy way to convert between the two reference frames. You can use the viz.MainWindow.screenToWorld command to get the line that passes through the given 2D coordinates. You can view the documentation for the command here.

Here is sample code that uses this command to place an object 5 meters away from the viewpoint at the current mouse position:
Code:
import viz
viz.go()

# Create a model
model = viz.add('ball.wrl')

def UpdateModel():
	
	# Get line that passes through current mouse position
	line = viz.MainWindow.screenToWorld(viz.mouse.getPosition())
	
	# Place model 5 meters away from current view
	model.setPosition(line.endFromDistance(5))
	
vizact.ontimer(0,UpdateModel)
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