Draw line with a triangle at the end

[Chrissy2009]

Hey,
I've done this, but it does not work:

viz.startlayer(viz.LINES)
		viz.linewidth(5)
		viz.vertexcolor(0,0.6,0)
		viz.vertex(punkt1)
		viz.vertex(punkt2)
		
		viz.startlayer(viz.TRIANGLES)
		viz.vertex(1,0,0)
		viz.vertex(-1,0,0)
		viz.vertex(0,1,0)			
		name = viz.endlayer(scene=szene)
		triangle = viz.endlayer(parent=name)

		name.center(punkt1)

01.bmp shows my actual program. But the arrow isn't at the right position.

In 02.bmp I've described my problem. I want to draw a line and afterthat I want to draw the triangle in the local coordinate system of the line.

So, that I'm able to set the triangle allways on

viz.vertex(1,0,0)
		viz.vertex(-1,0,0)
		viz.vertex(0,1,0)

regardless of which is the direction of the line.

Hope somebody can help me.