handles round a circle

Programming Questions

joshmyc

in Programming Questions • 2 years ago

hi, can anyone tweak this example so that the handles go round a circle, rather than being in a straight line?

any help much appreciated!

Handle[] handles;
int num;
void setup()
{
size(200, 200);
num = height/15;
handles = new Handle[num];
int hsize = 10;
for(int i=0; i<num; i++) {
handles[i] = new Handle(width/2, 10+i*15, 50-hsize/2, 10, handles);
}
}
void draw()
{
background(153);
for(int i=0; i<num; i++) {
handles[i].update();
handles[i].display();
}
//fill(0);
//rect(0, 0, width/2, height);
}
void mouseReleased()
{
for(int i=0; i<num; i++) {
handles[i].release();
}
}
class Handle
{
int x, y;
int boxx, boxy;
int length;
int size;
boolean over;
boolean press;
boolean locked = false;
boolean otherslocked = false;
Handle[] others;
Handle(int ix, int iy, int il, int is, Handle[] o)
{
x = ix;
y = iy;
length = il;
size = is;
boxx = x+length - size/2;
boxy = y - size/2;
others = o;
}
void update()
{
boxx = x+length;
boxy = y - size/2;
for(int i=0; i<others.length; i++) {
if(others[i].locked == true) {
otherslocked = true;
break;
} else {
otherslocked = false;
}
}
if(otherslocked == false) {
over();
press();
}
if(press) {
length = lock(mouseX-width/2-size/2, 0, width/2-size-1);
}
}
void over()
{
if(overRect(boxx, boxy, size, size)) {
over = true;
} else {
over = false;
}
}
void press()
{
if(over && mousePressed || locked) {
press = true;
locked = true;
} else {
press = false;
}
}
void release()
{
locked = false;
}
void display()
{
line(x, y, x+length, y);
fill(255);
stroke(0);
rect(boxx, boxy, size, size);
if(over || press) {
line(boxx, boxy, boxx+size, boxy+size);
line(boxx, boxy+size, boxx+size, boxy);
}
}
}
boolean overRect(int x, int y, int width, int height)
{
if (mouseX >= x && mouseX <= x+width &&
mouseY >= y && mouseY <= y+height) {
return true;
} else {
return false;
}
}
int lock(int val, int minv, int maxv)
{
return min(max(val, minv), maxv);
}

Replies(1)

PhiLho

You should show some attempt instead of giving code taken elsewhere unaltered. Hint: use sin() and cos().
Beside, your request is underspecified: if you don't have a precise idea of what you want to do, or if you don't express it explicitly, you can get unexpected results, or none at all.
You specified where the handles must be, but not what should be their displacement: around the circle, to the center, away from it, etc.

handles round a circle

Replies(1)

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