iniTree

Hello there,
I just want to share with you a simple that draws a ternary tree.
The algorithm is very simple and uses recursion. Here is what it does in pseudocode (for n-ary tree):

main{
	…
	max_levels = 10
	tree(initLenght, 1);
	…
}

tree(length, level){
	…
	if(level
	n = 3					//it is a ternary tree
		for(x=0; x
		pushMatrix()
			rotate ((360 / n)*x) along y axis
			rotate (aperture) along z axis
			drawLine(0,0,0, 0,length,0)	//from 0,0,0 to 0,length,0
			translate(0,length,0)
			tree(lenght/2, level+1)		//recursive call
			popMatrix()
		}
	}
}

As you can see, I used glRotate/glTranslate and glBegin(GL_LINES)/glEnd() calls, in old OpenGL style. Maybe this is the reason why with more than 8/9 levels I don’t obtain good performance. Using vbo will result in better performance, but I’m still not sure about how to do that.

It is a very simple plugin, but if used in audio-reaction compositions I think it can produce interesting results. So let me know if someone use it in some cool way! 🙂

• Download (plugin and example composition)