Draw Line between Points

[Chrissy2009]

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]

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

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]

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?