week 8. NTUST Logo

/**

 * Regular Polygon

 * 

 * What is your favorite? Pentagon? Hexagon? Heptagon? 

 * No? What about the icosagon? The polygon() function 

 * created for this example is capable of drawing any 

 * regular polygon. Try placing different numbers into the 

 * polygon() function calls within draw() to explore. 

 */

void setup() {

  size(1000, 800);

}

void draw() {

  background(255);

  ntust(width/2,height/2,0,102,179,frameCount / 200.0, map(mouseX,0,width,0,10));   

}

void polygon(float x, float y, float radius, int npoints) {

  float angle = TWO_PI / npoints;

  beginShape();

  for (float a = 0; a < TWO_PI; a += angle) {

    float sx = x + cos(a) * radius;

    float sy = y + sin(a) * radius;

    vertex(sx, sy);

  }

  endShape(CLOSE);

}

void ntust(float logoX, float logoY, float colorR, float colorG, float colorB, float rotate, float size )

{  

  pushMatrix();

  translate(logoX, logoY);

  rotate(rotate);

  strokeWeight(12*size);

  stroke(255);

  fill(colorR,colorG,colorB);

  ellipse(0,0,240*size,240*size);

  line(28*size,0,118*size,0);

  polygon(-52*size, 0, 80*size, 6);

  fill(255);

  ellipse(-52*size,0,68*size,68*size);

  

  popMatrix();

}