Processing example code

Processing example code

// -----------------------------doodle pad-----------------------------

// to draw, click and drag the mouse

// click on the palette to change color

// to adjust stroke weight use the up/down arrows

int guiX = 400;
int guiBtnWidth = 80;
int guiBtnHeight = 20;
PImage GUI;

int strokeWeight = 4;

String fileName = "doodle.png";


void setup() {
  size(500, 400); 
  background(255);
  smooth();
  strokeWeight(strokeWeight);
  GUI =loadImage("GUI.png");
}


void keyPressed() {
  if (keyCode == UP) {
    if (strokeWeight > 50) {
      strokeWeight++;
      strokeWeight(strokeWeight);
    }
  }
  else if (keyCode == DOWN) {
    if (strokeWeight > 1) {
      strokeWeight--;
      strokeWeight(strokeWeight);
    }
  }
}



void draw() {
  if (mousePressed == true) {
    if (mouseX < 400) {
      line(pmouseX, pmouseY, mouseX, mouseY);
    }
  }
  image(GUI, guiX, 0);
}


void mousePressed() {
  // check that the mouse is horizontally within the GUI buttons area
  if (mouseX > guiX + 10 && mouseX < guiX + 10 + guiBtnWidth) {
    // save button
    if (mouseY > 300 && mouseY < 300 + guiBtnHeight) {
      saveDoodle();
    }

    // open button
    if (mouseY > 335 && mouseY < 335 + guiBtnHeight) {
      openDoodle();
    }

    // clear button
    if (mouseY > 370 && mouseY < 370 + guiBtnHeight) {
      background(255);
    }

    // color palette
    if (mouseY > 10 && mouseY < 185) {
      color c = get(mouseX, mouseY);
      stroke(c);
    }
  }
}


void saveDoodle() {
  save(fileName);
}


void openDoodle() {
  PImage doodle;
  doodle = loadImage("../" + fileName);
  image(doodle, 0, 0);
}