heagonDwaw.pde

import controlP5.*;
import processing.svg.*;

ControlP5 gui;

PImage p1;
PImage p2;

int imageScaleUp = 1;

boolean isRunning = false;
boolean isRecording = false;
boolean needsReload = true;

boolean showEmpty = false;

String imageName = "lemmy2.jpg";

int gui_offset = 150;

int size = 10;

//////// your vars here ///////

void setup() {
  size(500, 700);
  //loadMainImage(imageName);

  gui = new ControlP5(this);
  
  gui.addToggle("setShowEmplty").setCaptionLabel("ON Show empty OFF").setPosition(10, 100).setValue(false).setMode(ControlP5.SWITCH).setColorCaptionLabel(color(0));
  gui.getController("setShowEmplty").getCaptionLabel().align(ControlP5.LEFT, ControlP5.TOP_OUTSIDE);

  gui.addSlider("setSize").setSize(130, 30).setCaptionLabel("Detail").setPosition(10, 200).setRange(5, 50).setValue(10).setColorCaptionLabel(color(0));
  gui.getController("setSize").getCaptionLabel().align(ControlP5.LEFT, ControlP5.TOP_OUTSIDE);
  
  gui.addBang("bangLoad").setSize(130, 30).setTriggerEvent(Bang.RELEASE).setCaptionLabel("Load image").setPosition(10, 600).setColorCaptionLabel(color(255));
  gui.getController("bangLoad").getCaptionLabel().align(ControlP5.CENTER, ControlP5.CENTER);

  smooth();
  background(255);
  shapeMode(CORNER);
  noFill();
}

void loadMainImage(String inImageName) {
  println("loadMainImage");
  p1 = loadImage(inImageName);
  p1.filter(GRAY);

  int tempheight = p1.height;
  if (tempheight < 720 + 120)
    tempheight = 720 + 120;

  surface.setSize(p1.width + gui_offset, tempheight);

  needsReload = true;
  redrawImage();
}

void redrawImage() {
  isRunning = true;
  isRecording = false;
}


void draw() {
  if (!isRunning) return;
  

    if (isRecording) {
      String[] p = splitTokens(imageName, "."); // split by point to know path without suffix
      String savePath = p[p.length - 2] + "_" + day() + hour() + minute() +  second() + ".svg";           
      println(savePath);
      beginRecord(SVG, savePath);
    }
    
    processImage();
    //////// your logic here ///////
    
    if (isRecording) {
      endRecord();
      println("record done");
      isRecording = false;
    }
}

void keyPressed() {
  if (key == 'r') { // save
    isRecording = true;
    isRunning = true;
    redraw();
  }
}


void bangDefault() {
  gui.getController("sldXSpacing").setValue(2.0);
}

void fileSelected(File selection) {
  if (selection == null) {
    println("Window was closed or the cancel selected.");
  } else {
    String loadPath = selection.getAbsolutePath();

    // If a file was selected, print path to file 
    println("Selected file: " + loadPath); 

    String[] p = splitTokens(loadPath, ".");
    boolean fileOK = false;

    if ( p[p.length - 1].equals("GIF"))
      fileOK = true;
    if ( p[p.length - 1].equals("gif"))
      fileOK = true;      
    if ( p[p.length - 1].equals("JPG"))
      fileOK = true;
    if ( p[p.length - 1].equals("jpg"))
      fileOK = true;   
    if ( p[p.length - 1].equals("jpeg"))
      fileOK = true; 
    if ( p[p.length - 1].equals("TGA"))
      fileOK = true;
    if ( p[p.length - 1].equals("tga"))
      fileOK = true;   
    if ( p[p.length - 1].equals("PNG"))
      fileOK = true;
    if ( p[p.length - 1].equals("png"))
      fileOK = true;   

    if (fileOK) {
      println("File type OK."); 
      imageName = loadPath;
      //isInit = false;
      loadMainImage(imageName);
      redrawImage();
    } else {
      // Can't load file
      println("ERROR: BAD FILE TYPE");
    }
  }
}

void bangLoad() {  
  println(":::LOAD JPG, GIF or PNG FILE:::");

  selectInput("Select an image file to open:", "fileSelected");  // Opens file chooser
} //End Load File

void setShowEmplty(boolean val) {  
  showEmpty = val;
  if(p1 != null) {
    background(255);
    needsReload = true;
    redrawImage();
  }
}

void setSize(int val) {
  size = val;
  if(size%2 > 0) {
    size++;
  }
  if(p1 != null) {
    background(255);
    needsReload = true;
    redrawImage();
  }
}


 //////// your code here ///////
 
 void processImage() {
   p1.loadPixels();
   float i = size/2;
   float j = size/2;
   int count = 1;
   float shiftY = getVerticalShift();
   float shiftX = getHorizontalShift();
   while(i < p1.height - size) {
     j = size/2;
     if(count % 2 < 1) {
       j = size;
     }
     while(j < p1.width - size) {
       float bright = brightness(p1.pixels[round(j)+round(i)*p1.width]);
       int maxLinesFill = round(map(size/2, 3, 10, 2, 5));
       int darkcount = round(map(255 - bright, 0, 255, showEmpty ? 1: 0, maxLinesFill));
       if(darkcount > 0) {
         drawHex(j + gui_offset, i, darkcount);
       }
       j += (size - (shiftX * 2));
     }
     i += (size - shiftY);
     count++;
   }
   isRunning = false;
 }
 
 void drawHex(float x, float y, int count) {
   float delta_rad = (size/2)/(count*1.0);
   float init_rad = size/2;
   for(int i = 0; i < count; i++) {
     float rad = init_rad - (delta_rad * i * 1.0);
     if(rad < 2) {
       point(x, y);
       continue;
     }
     drawHexa(x, y, rad);
   }
 }
 
 void drawHexa(float x, float y, float gs) {
  noFill();
  beginShape();
  for(int i=0;i<6;i++){
    float angle = i * 2 * PI / 6 + HALF_PI;
    vertex(x + gs*cos(angle),y + gs*sin(angle));
  }
  endShape(CLOSE);
}

float getVerticalShift(){
  return (size*1.0)/4;
}

float getHorizontalShift(){
  return (size*1.0)/2 - ((size*1.0)/2 * 0.866);
}