2017年12月14日 星期四

week 14. self portrait

http://shanear.com/artworks/typoportrait

Typo Portraits

pointillism portraits

cubist portrait

Question:
 How to generate "typo portraits"?

self portrait in particles

Self Portrait Demo:
12/29, 2017


Example 1:

PImage img;
int smallPoint, largePoint;
PFont f;
float threshold = 80;

void setup() {
size(736, 736);
img = loadImage("portrait.jpg");
smallPoint = 2;
largePoint = 30;
imageMode(CENTER);
noStroke();
background(255);

// Create the font
printArray(PFont.list());
f = createFont("Georgia", 9);
textFont(f);
textAlign(CENTER, CENTER);

}

void draw() {
float value;
color pix;
// if (mousePressed == true) {
background(80);
int counter = 0;
char letter;

float pointillize = map(mouseX, 0, width, smallPoint, largePoint);
float threshold = map(mouseY, 0, height, 0, 255);
for (int x = 0; x < img.width; x+=pointillize) {
for (int y = 0; y < img.height; y+=pointillize){
pix = img.get(x, y);
value = brightness(pix);
if (value > threshold)
fill(0, 255, 0);
else fill(0);
//ellipse(x, y, 5, 5);
counter = int(random(66, 123));
letter = char (counter);
text(letter, x, y);


}
}
// }

}



Example 2:

/**
* Pointillism
* by Daniel Shiffman.
*
* Mouse horizontal location controls size of dots.
* Creates a simple pointillist effect using ellipses colored
* according to pixels in an image.
*/

// The next line is needed if running in JavaScript Mode with Processing.js
/* @pjs preload="moonwalk.jpg"; */

PImage img;
int smallPoint, largePoint;

void setup() {
size(736, 736);
img = loadImage("portrait.jpg");
smallPoint = 4;
largePoint = 40;
imageMode(CENTER);
noStroke();
background(255);
}

void draw() {
float pointillize = map(mouseX, 0, width, smallPoint, largePoint);
int x = int(random(img.width));
int y = int(random(img.height));
int xWidth = int(random(10, 200));
int yHeight = int(random(10, 200));
int xShift = int(random(-20, +20));
int yShift = int(random(-20, +20));
for (int i = 0; i< xWidth; i++) {
for (int j = 0; j< yHeight; j++) {
color pix = img.get(x+i, y+j);
stroke(pix);
 //ellipse(xShift+x+i, yShift+y+j, pointillize, pointillize);
point(xShift+x+i, yShift+y+j);
}
}
}


Example 3:

float resolution;
float radius = 100;
float circleX;
float circleY;
float circles;
float circleW;
float circleH;
float offset;
PImage img;


void setup() {
  size(736, 736);
  circleX = 0;
  circleY = 0;
  background(0);
  img = loadImage("portrait.jpg");
}

void draw() {
  float value;
  color pix;
 
  fill(0,0,0,25);
//  rect(0,0,width,height);
  translate(width/2, height/2);
  fill(255);
  noStroke();
  offset++;

  resolution = map(sin(offset*0.00025), -1, 1, 5, 50);
  //resolution = 50;
  circles = 200;

  circleW = map(sin(offset*0.05), -1, 1, 1, 10);
  circleH = map(sin(offset*0.05), -1, 1, 1, 10);

  for (int i = 0; i < resolution; i++) {

    float scale = 200;

    float waveAngle = map(i, 0, resolution, 0, TWO_PI * circles);
    float waveOffset = sin(waveAngle) * scale*1.2;  //scale the -1 to 1 up

    float angle = map(i, 0, resolution, 0, TWO_PI * 331); //multiply for weirdness

    float circleOffsetX = cos(angle) * (radius + waveOffset); //xposition
    float circleOffsetY = sin(angle) * (radius + waveOffset); //yposition

    float x = circleX + circleOffsetX;
    float y = circleY + circleOffsetY;
 
    pix = img.get(int(x+width/2), int(y+height/2));
    value = brightness(pix);
    fill(0, green(pix), blue(pix));
    ellipse(x, y, circleW, circleH);

  }

}

2017年11月30日 星期四

week 12. Project 2 demo & Object-Oriented Programming

1. Mandala Project Demo

Project reference:
http://sciencefictioninterfaces.tumblr.com/

2. object oriented programming:
  https://processing.org/tutorials/objects/
  https://www.youtube.com/watch?v=YcbcfkLzgvs


EXercise:
  draw 'array-like' object with OOP

2017年11月16日 星期四

week 10. drawing Mandala

Basic sample 1:


float resolution;
float radius = 100;
float circleX;
float circleY;
float offset;

void setup() {
  size(700, 700);
  circleX = 0;
  circleY = 0;
}

void draw() {
  fill(0,0,0,25);
  rect(0,0,width,height);
  translate(width/2, height/2);
  fill(255);
  noStroke();
  offset++;

  resolution = map(sin(offset*0.005), -1, 1, 2, 20);
 // resolution = 20;



  for (int i = 0; i < resolution; i++) {
    float angle = map(i, 0, resolution, 0, TWO_PI);
//    float waveOffset = sin(angle*circles) * 200;
 

 
   float circleOffsetX = cos(angle) * (radius); //xposition
   float circleOffsetY = sin(angle) * (radius); //yposition
  //  float circleOffsetX = cos(angle) * (radius + waveOffset); //xposition
  //  float circleOffsetY = sin(angle) * (radius + waveOffset); //yposition
 

    float x = circleX + circleOffsetX;
    float y = circleY + circleOffsetY;
 
    ellipse(x, y, 10, 10);
 

  }
}

Sample 2:

float resolution;
float radius = 100;
float circleX;
float circleY;
float circles;
float circleW;
float circleH;
float offset;

void setup() {
  size(700, 700);
  circleX = 0;
  circleY = 0;
}

void draw() {
  fill(0,0,0,25);
  rect(0,0,width,height);
  translate(width/2, height/2);
  fill(255);
  noStroke();
  offset++;

  resolution = map(sin(offset*0.00025), -1, 1, 11, 13);
  //resolution = 50;
  circles = 400;

  circleW = map(sin(offset*0.05), -1, 1, 1, 8);
  circleH = map(sin(offset*0.05), -1, 1, 1, 8);

  for (int i = 0; i < resolution; i++) {

    float scale = 200;

    float waveAngle = map(i, 0, resolution, 0, TWO_PI * circles);
    float waveOffset = sin(waveAngle) * scale;  //scale the -1 to 1 up

    float angle = map(i, 0, resolution, 0, TWO_PI * 156); //multiply for weirdness

    float circleOffsetX = cos(angle) * (radius + waveOffset); //xposition
    float circleOffsetY = sin(angle) * (radius + waveOffset); //yposition

    float x = circleX + circleOffsetX;
    float y = circleY + circleOffsetY;
 
    ellipse(x, y, circleW, circleH);

  }

}

example 3:


float resolution;
float radius = 100;
float circleX;
float circleY;
float circles;
float offset;

void setup() {
  size(700, 700);
  circleX = 0;
  circleY = 0;
}

void draw() {
  fill(0,0,0,25);
  rect(0,0,width,height);
  translate(width/2, height/2);
  fill(255, 255, 0);
  noStroke();
  offset++;

  resolution = map(cos(offset*0.0002), -1, 1, 2, 200);
  circles = 100;


beginShape();
noFill();
  for (int i = 0; i < resolution; i++) {

    float scale = 400;

    float waveAngle = map(i, 0, resolution, 0, TWO_PI * circles);
    float waveOffset = sin(waveAngle) * scale;  //scale the -1 to 1 up

    float angle = map(i, 0, resolution, 0, TWO_PI * 156); //multiply for weirdness
   

    float circleOffsetX = cos(angle) * (radius + waveOffset); //xposition
    float circleOffsetY = sin(angle) * (radius + waveOffset); //yposition

    float x = circleX + circleOffsetX;
    float y = circleY + circleOffsetY;
 
    stroke(255);
    //line(x, y, 0, 0);
    vertex(x,y);
   

  }
  endShape(CLOSE);

}

reference:
search "mandala" on
https://www.openprocessing.org/

2017年11月9日 星期四

week 9. using Recursion

float radius;
int segment = 6;
float centerX;
float centerY;
int recursionLevel = 3;

void setup(){
 size(600,600);
 background(0);
 stroke(255);
 centerX = height/2;
 centerY = width/2;
}

void draw(){
  background(0);
  radius = dist(centerX, centerY, mouseX, mouseY);
  spiral(centerX,centerY,radius,segment, recursionLevel);
}
void spiral(float x_c,float y_c, float r, int seg,int level){
  level -= 1;
  noFill();
  ellipse(x_c,y_c,2*r,2*r);
    for(int i =0;i < seg; i++){
      float x = x_c+cos(i*2*PI/seg)*r; 
      float y = y_c+sin(i*2*PI/seg)*r;
      point(x,y); 
      ellipse(x,y,2*r,2*r);
    
      if(level > 0){
      spiral(x,y,r,seg, level);
      }
    }
}

2017年10月26日 星期四

week 7. Project 1 demo & using sin(x)

sample codes:

float radius;
int segment = 10;
float centerX;
float centerY;

void setup(){
 size(600,600);
 background(0);
 stroke(255);
 centerX = height/2;
 centerY = width/2;
}

void draw(){
  background(0);
  radius = dist(centerX, centerY, mouseX, mouseY);
  spiral(centerX,centerY,radius,segment);
}
void spiral(float x_c,float y_c, float r, int seg){
    for(int i =0;i<=seg;i++){
      float x = x_c+cos(i*2*PI/seg)*r;  //算出x的位置
      float y = y_c+sin(i*2*PI/seg)*r;  //算出y的位置
      point(x,y);  // 畫出點,也能用其他形狀
    }
}



EX:
1. 每次點擊滑鼠,劃一個隨機半徑大小的圓。
2. draw flower of life (生命之花)

reference:

https://processing.org/examples/sine.html

https://processing.org/examples/sinecosine.html

John Whitney
https://www.youtube.com/watch?v=BzB31mD4NmA

https://www.youtube.com/watch?v=s_KIrIJkLoE

2017年10月12日 星期四

week 5. 2D Arrays

review:
  draw a rotating shape in the center of screen.

  also use 'scale()' to change the size of the object.


參考:
https://processing.org/examples/array2d.html

用 2D array 設定每個元素的顏色,旋轉速度,屬性。

float[][] distances;
float[][] rotateAngles;
float[][] rotateRates;
float maxDistance;
int spacer;

void setup() {
  size(640, 360);
  maxDistance = dist(width/2, height/2, width, height);
  distances = new float[width][height];
  rotateAngles = new float[width][height];
  rotateRates = new float[width][height];
  for (int y = 0; y < height; y++) {
    for (int x = 0; x < width; x++) {
      float distance = dist(width/2, height/2, x, y);
      distances[x][y] = distance/maxDistance * 255;
      rotateAngles[x][y] = random(5.0);
      rotateRates[x][y] = random(5.0, 40.0);
    }
  }
  spacer = 30;
  strokeWeight(3);
  //noLoop();  // Run once and stop
}

void draw() {
  background(0);
  // This embedded loop skips over values in the arrays based on
  // the spacer variable, so there are more values in the array
  // than are drawn here. Change the value of the spacer variable
  // to change the density of the points
  for (int y = 0; y < height; y += spacer) {
    for (int x = 0; x < width; x += spacer) {
      pushMatrix();
      translate(x, y);
      rotate(frameCount/rotateRates[x][y]+rotateAngles[x][y]);
      rect(-spacer/2, -spacer/2, spacer, spacer);
      stroke(distances[x][y]);
      popMatrix();
    }
  }
}


Project 1:
  2D 陣列作品系列五連作,參考 CODE+FORM
  Deadline Oct. 27, 2017