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-   -   Draw Line between Points (https://forum.worldviz.com/showthread.php?t=2025)

Chrissy2009 05-12-2009 01:33 AM

Draw Line between Points
 
Hi,

I want to create a line between two points. The first point at the mouseDown Position and the second point at the mouseUp Position. Between these two points I want to draw a line.

This works very fine.

But now I want to show the line, before the mouseUp Event. So that I push down the mousebutton, move it at another position and can already see the line, although the mousebutton is pushed.

The line would change as long as I push the mousebutton.

Is this possible?

Thanks in advance...

farshizzo 05-12-2009 09:12 AM

Yes, this is definitely possible. Here is a sample script that uses the viztask module to draw lines with the mouse:
Code:

import viz
import viztask
viz.go()

def DrawLineTask():
       
        while True:
               
                #Wait for left mouse butten to be pressed
                yield viztask.waitMouseDown(viz.MOUSEBUTTON_LEFT)
               
                #Get mouse position
                pos = viz.mouse.getPosition()
               
                #Create line
                viz.startlayer(viz.LINES)
                viz.vertexcolor(viz.RED)
                viz.vertex(pos[0],pos[1],0)
                viz.vertex(pos[0],pos[1],0)
                line = viz.endlayer(parent=viz.SCREEN)
               
                #Create link between mouse position and vertex
                VertexLink = viz.link(viz.Mouse,line.Vertex(1))
               
                #Wait for mouse button to be released
                yield viztask.waitMouseUp(viz.MOUSEBUTTON_LEFT)
               
                #Destroy link
                VertexLink.remove()
               
viztask.schedule( DrawLineTask() )


Chrissy2009 05-13-2009 04:42 AM

Hi,

thanks a lot!

And how can I stop the schedule, so I'm able to draw only two lines and no more??

Is there a possibility to save the separate positions of all these four vertex?


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