circular motion example 7-14 (getting started). replace ellipse with other shape in loop

in Programming Questions • 1 year ago

going for a variation on the example which does

replacing the shape (ellipse ()) with another object instead of repeating the same object over and over for each execution of the loop

circular motion example 7-14 of the getting started book is

float angle = 0.00;

float offset = 60 ;

float scalar = 30;

float speed = 0.05;

void setup () {

size (120, 120);

smooth () ;

}

void draw () {

float x = offset + cos (angle) * scalar ;

float y = offset + sin (angle) * scalar ;

ellipse ( x, y, 40, 40);

angle += speed;

}

Replies(6)

tfguy44

Re: circular motion example 7-14 (getting started). replace ellipse with other shape in loop

1 year ago

So just replace the call to ellipse() with something else.
Want a rectangle? Try rect(). ("rect(x,y,40,40);")
Want a line? Try line(). ("line(x,y,x+5,y+5);")
Want a point? Try point(). ("point(x,y);")
Want to draw something else there? Then draw something else there!
What exactly did you want it to do?

ardesh

Re: circular motion example 7-14 (getting started). replace ellipse with other shape in loop

1 year ago

I want one ellipse on first execution, one square on second execution, one. ..... etc .

its a matter of writing a condiitonal statement that says something to the effect of

execute the loop once with the ellipse , when you reach ellipse a second time ignore ellipse and go for the next string that's available in the stack

ardesh

Re: circular motion example 7-14 (getting started). replace ellipse with other shape in loop

1 year ago

in the following, there are two strings, message 1 and message2 .I want to set the program to alternate within the stack differing strings , rather than repeating one or shape or whatever

I'm calling a string , instead of a shape

But I have two strings I need read , in order and then stop , arranged in a circular relationship like the one in the motion example

float angle = 0.0 ;

float offset = 60 ;

float scalar = 130 ;

float speed = 0.05 ;

String message1 = "ardeshir" ;

String message2 = "done" ;

void setup () {

size (2016, 1152 ) ;

//size (120, 120) ;

smooth () ;

//noLoop () ;

}

void draw () {

//float x = offset + cos( angle) * scalar;

//float y = offset + sin (angle) * scalar;

float x = width/2 + cos( angle) * scalar;

float y = height/2 + sin (angle) * scalar;

textSize (36) ;

textLeading (72);

text (message1, x, y) ;

angle += speed ;

pushMatrix () ;

translate (x, y ) ;

text (message2, x, y) ;

popMatrix () ;

}

tfguy44

Re: circular motion example 7-14 (getting started). replace ellipse with other shape in loop

1 year ago

Here, I neatened it up for you:

String m1="done";
String m2="ardeshir";
float angle;
float scalar;
float speed;
boolean doOther;
void setup(){
size(600, 400);//2016, 1152);
smooth();
textSize(36);
textAlign(CENTER, CENTER);
reset();
}
void reset(){
angle=0;
scalar=130;
speed=.05;
doOther=false;
}
void draw () {
simulate();
render();
}
void simulate(){
angle+=speed;
if( angle > TWO_PI ){
doOther = !doOther;
angle-=TWO_PI;
}
}
void render(){
background(0);
translate(width/2, height/2);
text(doOther?m1:m2, scalar*cos(angle), scalar*sin(angle));
}

ardesh

more than m1: m2, need m1: m2: , m2 : m3, m3: m4 , m4: m5 . .

1 year ago

need to change up the text multiple times and need it to stay fixed to the screen

//
//float angle ; // = 0.0 ;
//float offset ; // = 60 ;
//float scalar ; // = 130 ;
//float speed ; // = 12.00;
////float speed = 0.05;
//boolean doNext;
//
float angle = 360/ 12 ;
float offset = 144 ;
float scalar = 327.27272727 ;
float speed = 0.5 ;
String m3="fff";
String m4="ggg";
String m5="hhh";
String m6="iii";
void setup () {
frameRate(2);
size (800, 800) ; //(2016, 1152 ) ;
//size (120, 120) ;
smooth () ;
//noLoop () ;
textAlign (CENTER, CENTER);
// okreset (); //ok reset
}
//void okreset () {
//
//
// angle = 0.0 ;
// offset = 60 ;
// scalar = 130 ;
// speed = 12.00;
// doNext = true ;
void draw () {
// oksimulate (); // ok simulate
// okrender () ; // ok render
//
//void oksimulate () {
// float x = offset + cos( angle) * scalar;
// float y = offset + sin (angle) * scalar;
float x = width/2 + cos( angle) * scalar;
float y = height/2 + sin (angle) * scalar;
textSize (72) ;
text (m3, x, y) ;
angle += speed ;
}
// void okrender () ;

tfguy44

Re: circular motion example 7-14 (getting started). replace ellipse with other shape in loop

1 year ago

String[] strings = { "done", "ardeshir", "Third", "Square", "Star", "Honeycomb", "Holy", "Octopus", "Ninja", "Decimal" };
float angle;
float scalar;
float speed;
int which;
void setup(){
size(600, 400);//2016, 1152);
smooth();
textSize(36);
textAlign(CENTER, CENTER);
reset();
}
void reset(){
angle=0;
scalar=130;
speed=.05;
which=0;
}
void draw () {
simulate();
render();
}
void simulate(){
angle+=speed;
if( angle > TWO_PI ){
which++;
which%=strings.length;
angle-=TWO_PI;
}
}
void render(){
background(0);
translate(width/2, height/2);
text(strings[which], scalar*cos(angle), scalar*sin(angle));
}

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