prcsng update

LAB/eserciziCasa/sperimentazioniImmagini/sperimentazioniImmagini.pde

@@ -0,0 +1,34 @@
+PImage Im, ImN, ImG, ImL;
+void setup(){
+  size(500,500);
+  Im = loadImage("napule.png");
+  ImG = loadImage("yuri.jpg");
+  Im.resize(256,256);
+  ImG.resize(256,256);
+  image(Im,0,0);
+
+
+  ImN = negativo(Im);
+  ImL = negativo(ImG);
+  image(ImL,0,256);
+  image(ImN,256,0);
+  image(ImG,256,256);
+}
+
+
+
+PImage negativo(PImage I){
+   PImage R = I.copy();
+   R.loadPixels();
+
+   float r,g,b;
+   for(int i=0; i<R.pixels.length;i++){
+      r = 255-red(R.pixels[i]);
+      g = 255-green(R.pixels[i]);
+      b = 255-blue(R.pixels[i]);
+
+      R.pixels[i] = color(r,g,b);
+   }
+   R.updatePixels();
+   return R;
+}