random point in the algorithm of Delaunay

Hi! im bilding a mesh with vector and ofx delaunay using this standart algorithm

  
#include "ofxDelaunay.h"  
  
void ofxDelaunay::reset(){  
    vertices.clear();  
    triangles.clear();  
	triangleMesh.clear();  
}  
  
int ofxDelaunay::addPoint( const ofPoint& point ){  
	return addPoint( point.x, point.y, point.z );  
}  
  
int ofxDelaunay::addPoint( float x, float y, float z ){  
    XYZ v;  
    v.x = x;  
    v.y = y;  
    v.z = z;  
    vertices.push_back(v);  
	return vertices.size();  
}  
  
int ofxDelaunay::addPoints( vector<ofPoint>& points ){  
	for(int i = 0; i < points.size(); i++){  
        addPoint( points[i] );  
    }  
    return vertices.size();  
}  
  
int ofxDelaunay::triangulate(){  
      
    int nv = vertices.size();  
    //add 3 emptly slots, required by the Triangulate call  
    vertices.push_back(XYZ());  
    vertices.push_back(XYZ());  
    vertices.push_back(XYZ());  
      
    //allocate space for triangle indices  
    triangles.resize(3*nv);  
      
	int ntri;  
	qsort( &vertices[0], vertices.size()-3, sizeof( XYZ ), XYZCompare );  
	Triangulate( nv, &vertices[0], &triangles[0], ntri );  
	  
	// copy triangle data to ofxDelaunayTriangle.  
	triangleMesh.clear();  
      
    //copy vertices  
	for (int i = 0; i < nv; i++){  
        triangleMesh.addVertex(ofVec3f(vertices[i].x,vertices[i].y,vertices[i].z));  
    }  
      
    //copy triagles  
	for(int i = 0; i < ntri; i++){  
		triangleMesh.addIndex(triangles[ i ].p1);  
		triangleMesh.addIndex(triangles[ i ].p2);  
		triangleMesh.addIndex(triangles[ i ].p3);  
	}  
	  
	return ntri;  
}  
  
void ofxDelaunay::draw(){  
	if(ofGetStyle().bFill){  
	    triangleMesh.draw();  
    }  
    else{  
    	triangleMesh.drawWireframe();      
    }  
}  
  

and app build felicitously
but the construction of the points consistent, and built equal triangles.
how can i set random point, and build something like this image?

hm, could you post a code snippet that shows how you´re using ofxDelauny ?
greetings ascorbin