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-   -   how can i change the orientation of an arrow? (https://forum.worldviz.com/showthread.php?t=3356)

alberto_redo 01-21-2011 12:28 PM

how can i change the orientation of an arrow?
 
Hi everyone, I have a problem, I have drawn several points and some are connected with lines and I put an arrow to indicate the direction, I tried to put the arrow with the lookat method, I put on setPosition the coordinates of the origin and I changed the angle of the Y-axis at 90 degrees but can not get fit. Can anyone help?

Copy of the code here:

viz.startlayer(viz.LINES)
viz.vertexcolor(viz.RED)
viz.vertex(xAnterior,yAnterior,zAnterior) #point of origin
viz.vertex(x,y,z) #destination
linea = viz.endlayer()

flecha = viz.add('arrow.wrl')
flecha.setPosition(xAnterior,yAnterior,zAnterior) #point of origin
flecha.lookat([x,y,z]) #destination
flecha.color(1,0,0)
flecha.setEuler(0,90,0)
flecha.parent(linea)

Thanks

farshizzo 01-25-2011 12:18 PM

Try using marker.wrl instead. It is aligned along the +Z axis, so it should work properly with the node.lookat command.


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