import blobDetection.*;
import peasy.*;
PeasyCam cam;

PImage img;

float levels = 35; // number of contours
float factor = 1; // scale factor
float elevation = 55; // total height of the 3d model

float colorStart = 0; // Starting degree of color range in HSB Mode (0-360)
float colorRange = 100; // color range / can also be negative

// Array of BlobDetection Instances
BlobDetection[] theBlobDetection = new BlobDetection[int(levels)];

void setup() {
 size(1000,800,P3D); 
 img = loadImage("3.gif"); // heightmap (about 250×250px)
 cam = new PeasyCam(this,200);
 colorMode(HSB,360,100,100); 

 //Computing Blobs with different thresholds 
 for (int i=0 ; i<levels ; i++) {
 theBlobDetection[i] = new BlobDetection(img.width, img.height);
 theBlobDetection[i].setThreshold(i/levels);
 theBlobDetection[i].computeBlobs(img.pixels);
 }
}

void draw() { 
 background(0);
 translate(-img.width*factor/2,-img.height*factor/2);

 for (int i=0 ; i<levels ; i++) {
 translate(0,0,elevation/levels); 
 drawContours(i);
 }
}