printing on an array or organized on the edges or corners of a shape!

Programming Questions

parsiatid..

printing on an array or organized on the edges or corners of a shape!

in Programming Questions • 3 years ago

void setup(){
background(255);
size(600,600);
noStroke();
fill (175);
ellipse (300, 300, 600, 600);

}
void draw(){

// now i want to print small ellipse continuously on the edges of my circle?
// for (int i=0; i<40; i++);
//ellipse(??, ?? , 20, 20); // to have small objects on the edges of my circle
// after 40 , i must reset to 0 again and start printing small ellipse or rects on the edges.

}

Replies(2)

danpaul80

Re: printing on an array or organized on the edges or corners of a shape!

3 years ago

I ran into something like this before. I don't recall the exact math but you'll have to use trig. Essentially you'll use the radius of your lager circle combined with the angle (in radians) to determine an offset from the center of your circle. Use Sin(angle) = opposite/hypotenuse(radius), to determine your opposite side for you X-offset. Use Cos(angle) = adjacent/hypotenuse(radius) to determine your Y offset.

Sorry, I'm not getting you all the way there, you'll have to change up the formulas to isolate the variable you'll want and figure out how to offset that number from

oh hey, I just found and old script dealing w/this problem. It's a circularly orbiting objecting orbiting another circularly orbiting object. I'm just learning and this is probably riddled with errors but it works and hopefully points you in the right direction.

float theta;
float theta2;
float increment;
float increment2;
float radius;
float radius2;
void setup() {
size(500, 500);
smooth();
theta = 0;
theta2 = 0;
radius = width/4;
radius2 = width/8;
increment = .01;
increment2 = .1;
background(255);
}
void draw() {
circlecalc(theta, theta2, radius, radius2);
theta = theta + increment;
theta2 = theta2 + increment2;
}
void circlecalc(float _theta, float _theta2, float _radius, float _radius2) {
float x = width/2 + sin(_theta)*radius;
float y = height/2 + cos(_theta)*radius;
point(x,y);
float x2 = (sin(_theta2)*(_radius2)+x);
float y2 = (cos(_theta2)*(_radius2)+y);
point(x2,y2);
}

parsiatid..

Re: Re: printing on an array or organized on the edges or corners of a shape!

3 years ago

Thank you dear danpaul!
I try to understand what you said! since i am not good in math and formulas at all!
The program you have pasted here is so cool! thanks for sharing it! Appreciate it!
this is what i was trying to do:
but want the chips to be organized and noticeable!

int radius = 200;

void setup() {
size(600,600);
smooth();
background(255);

}

void draw() {
background(255);

int s = second(); // Values from 0 - 59
   int m = minute();
fill(180,150,60);
stroke(100,80,30);
ellipse(width/2,height/2,radius*2,radius*2);
randomSeed(0);
fill(0);
for(int i = 0; i<s; i++){
   fill (0,255,0);
   float x = width/2+cos(i)*random(radius-20);
   float y = height/2+sin(i)*random(radius-20);
   rect(x,y,10,10);
}
           randomSeed(0);
       for(int j = 0; j < m; j++){

         fill(255,0,0);
         float z = width/2+cos(j)*random(radius-20);
         float w = height/2+sin(j)*random(radius-20);
         rect(z,w,20,20);
       }

}