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

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/

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);
      }
    }
}


References:

The Illusions of Reality & The Basics of Sacred Geometry (The Patterns of Consciousness) 

https://www.youtube.com/watch?v=zoqTNpok6zw