GMO Network Creator

TUTORIAL GMO NETWORK CREATOR 1.

Software Functions

This program create the two main road networks of a city and are both defined by a net of points

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The network based on Voronoi Diagram. This Network also create the limits of all the districts of the site (neighborhoods)

GMO Network Creator - Tutorial

The network called “Minimum Spanning Tree� which links the most efficiently all the points (the shorter network).

Under the final network are indicated the length of :

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the total network the longest street (between 2 points) the shortest street (between 2 points)

GMO Network Creator - Tutorial

You can restart the program when press “Restart” or You can show the final result of the network (with a black mask) when press “Final Result”

GMO Network Creator - Tutorial

1.

Configuration

In order to adapt the program to any configuration, here are the parameters you have to modify : •

Modification of number of points

GraphBuilder graph; ProcessMST process; ArrayList edgesList; ArrayList verticesList; // Number of connexion point int SIZE = 15; PImage img;

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Modification of the image

void setup() { size(700, 700); fill(255, 0, 0, 8); stroke(200, 0, 0, 90); strokeWeight(3); points = new float[SIZE][2]; ellipseMode(CENTER); frameRate(10); background(0); label = loadFont("Helvetica-Bold-12.vlw"); // Image Loading img = loadImage("stutt.jpg"); image(img,0,0,700,700); }

GMO Network Creator - Tutorial

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Mask definition for final result

RGB Color of Mask void masque() { img= loadImage("stutt1_700.jpg"); loadPixels(); img.loadPixels(); for (int y = 0; y < height; y=y+1 ) { for (int x = 0; x < width; x=x+1 ) { int loc = x + y*width; float r = red(img.pixels [loc]); float g = green(img.pixels[loc]); float b = blue(img.pixels[loc]); // Definition of the color of the mask in the picture of mask with RGB Colors if ((r==2) && (g==0) && (b==1)) { // Set the display pixel to the image pixel pixels[loc] = color(0,0,0); } } updatePixels(); } }

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Showing Delaunay and Hull Mesh

boolean showVoronoi=true; boolean showDelaunay=false; // Show all the connexion between points boolean showHull=false; // show the area delimited by the connexion points

GMO Network Creator - Tutorial