/*Drew Cogbill
 Image 4.1
 [computation08]*/

//This program loads an image and uses filter()s to alter it
//To look at the different filters, hold down numbers 1-7
PImage bottles;
PFont font;

void setup() {
  size(500 ,375);
  bottles = loadImage("bottles.jpg");
  font = loadFont("arialblack.vlw");
  textFont(font);
  fill(240, 5, 5);
}

void draw() {
  image(bottles, 0, 0);
  if ((keyPressed == true) && (key == '1')) {
    image(bottles, 0, 0);
    filter(BLUR, 4);
    text("BLUR", 20, 250);
  }
  else if ((keyPressed == true) && (key == '2')) {
    image(bottles, 0, 0);
    filter(POSTERIZE, 4);
    //Posterize limits each channel to a number of colors
    text("POSTERIZE", 20, 250);
  }
  else if ((keyPressed == true) && (key == '3')) {
    image(bottles, 0, 0);
    filter(THRESHOLD, 0.5);
    //Threshold converts to black and white depending if a pixel is
    //above or below a certain level
    text("THRESHOLD", 20, 250);
  }
  else if ((keyPressed == true) && (key == '4')) {
    image(bottles, 0, 0);
    filter(INVERT);
    text("INVERT", 20, 250);
  }
  else if ((keyPressed == true) && (key == '5')) {
    image(bottles, 0, 0);
    filter(GRAY);
    text("GRAY", 20, 250);
  }
  else if ((keyPressed == true) && (key == '6')) {
    image(bottles, 0, 0);
    filter(ERODE);
    //Erode reduces the light areas
    text("ERODE", 20, 250);
  }
  else if ((keyPressed == true) && (key == '7')) {
    image(bottles, 0, 0);
    filter(DILATE);
    //Dilate increase the light areas
    text("DILATE", 20, 250);
  }
}