Processing Forum

Rearranging numbers combination

[2 Replies]
- 02-Apr-2013 11:16 PM
- Forum: Programming Questions
Hi i wanted to rearrange numbers with every possible combinations,

for example:

i key in 123 and i want to find every other possible combination from this number like

132

213

231

312

321

below are my code and i'm able to do it, but sometimes it doesn't works, and is there a much more simple way to do it? i believe there is much simple code than mine.
1. ArrayList<String> combinations = new ArrayList<String>();
  
  class n {
  
  int number;
  
  boolean used;
  
  n(int x) {
  
  number = x;
  
  used = false;
  
  }
  
  }
  
  int counter = 0;
  
  n[] num = new n[4]; // 4 means 4 digit number like 8134 which have 24 combination
  
  String com = "";
  
  for (int i = 0 ; i != num.length; i++) {
  
  num[i] = new n(round(random(9)));
  
  com += num[i].number;
  
  }
  
  combinations.add(com);
  
  com = "";
  
  int rounds = 0;
  
  while ( rounds != 23 ) { //23 means the number of possible combination
  
  for (int i = 0 ; i != num.length; i++) {
  
  int rand = round(random(num.length-1));
  
  while (num[rand].used) {
  
  rand = round(random(num.length-1));
  
  }
  
  com += num[rand].number;
  
  num[rand].used = true;
  
  }
  
  for (int i = 0 ; i != num.length; i++) {
  
  num[i].used = false;
  
  }
  
  for (int i = 0 ; i != combinations.size(); i++) {
  
  if (int(com) == int(combinations.get(i))) {
  
  counter += 1;
  
  }
  
  }
  
  if (counter == 0) {
  
  combinations.add(com);
  
  com = "";
  
  rounds+=1;
  
  }
  
  else{
  
  com = "";
  
  }
  
  counter = 0;
  
  }
  
  println(combinations);

animation logic problem

[2 Replies]
- 27-Mar-2013 01:01 AM
- Forum: Programming Questions
Hi i've some logical problem.

I want to create an animation with n numbers of button, and when i hit Right or left the button will move according to the direction.

My problem is that, lets say i hit left and the button starts to move left and after it dissappear from the screen i want it to come back from the right into the screen.

currently i use circle to represent my button;

main
2. circle[] c = new circle[5];
3. float spacing, dia;
4. boolean moveLeft = false, moveRight = false;
5. int[] checkPos = new int[5];
6. int checkLast, checkFirst;
8. void setup() {
9. size(screen.width, screen.height);
10. dia = 200;
11. spacing = (width/2 + dia/2 - dia*2)/2;
12. println(width + dia/2);
13. for (int i = 0; i!= c.length; i++) {
14. if ( i == c.length -1 ) {
15. checkPos[i] = -1;
16. c[i] = new circle(width/2 - spacing - dia, 500, dia, dia,""+i);
17. }
18. else {
19. checkPos[i] = i;
20. c[i] = new circle(width/2 + i*spacing + i*dia, 500, dia, dia,""+i);
21. }
22. println(c[i].pos.x);
23. }
24. checkFirst = checkPos[0];
25. checkLast = checkPos[checkPos.length-1];
26. }
28. void draw() {
29. background(255);
30. for (int i = 0; i!= c.length; i++) {
31. c[i].display();
32. }
34. if (moveLeft) {
35. for (int i = 0; i!= c.length; i++) {
36. c[i].easing(c[i].realPos.x-spacing-dia);
37. }
38. }
39. if (moveRight) {
40. for (int i = 0; i!= c.length; i++) {
41. c[i].easing(c[i].realPos.x+spacing+dia);
42. }
43. }
44. for (int i = 0; i!= c.length; i++) {
45. if ( checkPos[i] == 0){
46. c[i].easeSize(c[i].actualDia.x * 1.3);
47. }
48. else{
49. c[i].easeSize(c[i].actualDia.x);
50. }
51. }
52. }
circle
2. class circle {
3. PVector pos;
4. PVector realPos;
5. PVector dia;
6. PVector actualDia;
7. String n;
8. circle(float x, float y, float dx, float dy, String v) {
9. pos = new PVector(x, y);
10. realPos = new PVector(x, y);
11. dia = new PVector(dx, dy);
12. actualDia = new PVector(dx, dy);
13. n = v;
14. }
16. void display() {
17. ellipse(pos.x, pos.y, dia.x, dia.y);
18. fill(0);
19. text(n,pos.x, pos.y);
20. fill(255);
21. }
23. void easing(float x) {
24. boolean reached = round(x-pos.x) == 0;
25. if (reached) {
26. pos.x = x;
27. realPos.x = x;
28. moveLeft = false;
29. moveRight = false;
30. }
31. else {
32. pos.x += (x - pos.x) * 0.2;
33. }
34. }
36. void easeSize(float diameter_size) {
37. boolean reached = round(diameter_size - dia.x) == 0 && round(diameter_size - dia.y) == 0;
38. if (reached) {
39. dia.x = diameter_size;
40. dia.y = diameter_size;
41. }
42. else {
43. dia.x += (diameter_size - dia.x) * 0.2;
44. dia.y += (diameter_size - dia.y) * 0.2;
45. }
46. }
47. }
Controller
2. void keyReleased() {
3. if (!moveRight && !moveLeft) {
4. if (keyCode == LEFT) {
5. for (int i = 0; i!= c.length; i++) {
6. if (c[i].pos.x < 0) {
7. c[i].pos.x = width/2 + checkPos[i]*spacing + checkPos[i]*dia;
8. c[i].realPos.x = width/2 + checkPos[i]*spacing + checkPos[i]*dia;
9. }
10. }
11. for (int i = checkPos.length-1 ; i != -1; i --) {
12. if ( i != 0 ) {
13. checkPos[i] = checkPos[i-1];
14. }
15. else {
16. checkPos[i] = checkLast;
17. checkLast = checkPos[checkPos.length-1];
18. }
19. }
20. checkFirst = checkPos[0];
21. moveLeft = true;
22. }
24. if (keyCode == RIGHT) {
25. for (int i = 0; i!= c.length; i++) {
26. if (c[i].pos.x > width) {
27. c[i].pos.x = width/2 - checkPos[i]*spacing - checkPos[i]*dia;
28. c[i].realPos.x = width/2 - checkPos[i]*spacing - checkPos[i]*dia;
29. }
30. }
31. for (int i = 0 ; i != checkPos.length-1; i ++) {
32. if ( i != checkPos.length-1 ) {
33. checkPos[i] = checkPos[i+1];
34. }
35. else {
36. checkPos[i] = checkFirst;
37. checkFirst = checkPos[0];
38. }
39. }
40. checkLast = checkPos[checkPos.length-1];
41. moveRight = true;
42. }
43. }
44. //println(checkPos);
45. //println("");
46. }
There's no problem with moving left, but moving right i have some problem and it have to do with the highlighted part, but i don't know how to solve it.
currently i use checkPos(array) to set the location of the circle. the center button is always 0 in the checkpos.

For example;

[0] [1] [2] [3] [4] (Button)

0 1 2 3 -1 (Position)

1 2 3 -1 0 (Position after right click)

Position for 0 means center, -1 left from the center button, 1 right to the center button

so on my 1st right click, button of position more than width, needs to be set to a new position, so button 3 and 2 are > width, thus 3 have to be set to width/2 - 2*spacing - 2*dia; before it will move to the right, but now for button 3 it's set to width/2 - checkPos[i]*spacing - checkPos[i]*dia; checkPos[i] = 3 while for button it's 2 while it suppose to be 3.

Hope you guys could help.

Thanks.

Loading Image with big resolution

[1 Reply]
- 23-Nov-2012 08:22 PM
- Forum: General Discussion
Hi, i'm doing a program which requires me to load lots of pictures, however the pictures that i load are in big Pixels, thus loading the image slows down my program alot and requires lots of memory, is there a way to overcome this problem?

Mathematical problem

[3 Replies]
- 23-Nov-2012 08:19 PM
- Forum: Programming Questions
Hi,
i've some mathematics question, i'm trying to come up with a formula which is dynamic.

now i'm trying to insert n number of pictures with the same width, and same spacing in between them, i'm trying to make sure that the pictures are position in the center, which means if i have 4 pictures, i want the 1st picture to the last to be sort of as 1 picture and position in the center.

for example:

4 Pic

---(img)--(img)--(img)--(img)---

3 Pic

----(img)--(img)--(img)----

the picture will as a whole will always be at the center of the scree

ArrayList<Float> pos = new ArrayList<Float>();

float imgSize;

int numOfPic = 4;

PImage picture;

void setup() {

size(800, 500);

imgSize = width*0.15;

picture = loadImage( "picture.png" );

setPicPos();

}

void draw() {

//background(255);

for (int i = 0; i != numOfPic; i++) {

println(pos.get(i));

image(picture, pos.get(i), height*0.5, imgSize, imgSize);

}

}

void setPicPos() {

float spacing = imgSize * 2.5;

float totalLength = (imgSize*numOfPic) + ((spacing - imgSize)*numOfPic - 1);

float position = width - (totalLength/2);

for (int i = 0; i != numOfPic; i++) {

pos.add(position);

position += spacing;

}

}

hope you all could help :)

Animation slowing down

[5 Replies]
- 01-Nov-2012 11:25 PM
- Forum: Programming Questions
hi, i did an animation however the animation gets slower and slower, i think it have to do with memory, would like to ask if anyone face such problem and how to solve it?

image(a, position.x, position.y);

movement = (height/100)*sin(theta);

position.x = initialPosition.x + movement;

theta += 0.07;

the movement speed of the animation should be constant, however it gets slower and slower, is it because of the image?

Thanks :)

How to set value for particular variable in an arraylist

[1 Reply]
- 21-Jul-2012 11:57 PM
- Forum: Programming Questions
this is my constructor

Timeline(int score, float poX, float posY)

tl = new ArrayList<Timeline>();

tl.add(new Timeline(20, 50, 30));

instead of resetting the whole timelime like below
tl.set(0, new Timeline(20, 50, 50));

i would like to set the variable posY maybe something like

tl.set(0, new Timeline.posY = 50);

i know it's wrong, but just a rough idea on what i want

thx

text alignment using String.format

[1 Reply]
- 21-Jul-2012 04:47 AM
- Forum: Programming Questions
hi, i would like to align my code neatly, for example:
abc :

abcdefg :

awsgg :

as you can see i want to align the semi-colon all in line, here's my code below, but it seems not able align the way i wanted.

size(300,300);

textSize(20);

text(String.format("%-20s %-2s","Hello World", ":"),10,40);

text(String.format("%-20s %-2s","Hi", ":"),10,70);

text(String.format("%-20s %-2s","Hello", ":"),10,100);

Convert String to datetime or date format

[1 Reply]
- 20-Jul-2012 11:10 PM
- Forum: Programming Questions
Hi,

currently i have this code

String = " 2012-07-18 21:32:00 "

would like to convert it into a datetime or date format.

thanks in advance.

Sql problem

[2 Replies]
- 20-Jul-2012 10:56 PM
- Forum: Contributed Library Questions
Hi,
would like to ask if anyone knows a way to insert special characters in mysql?

below is the code,

msql.execute("INSERT INTO testing (message) VALUES ('"+msg+"');" );

There will be error occur when i insert a message that contains character like ', ", and ; i know these got to do with sql injection but i don't want to remove those special character, and would like to insert the message to the database the way it is.

hope you guys can help. Thx.

Declare variables in Pgraphics

[8 Replies]
- 18-Jul-2012 04:01 AM
- Forum: Programming Questions
Hi,
is there anyway to delcare a float variable which belongs to the Pgraphic

for example

PGraphics dA;

dA.float x = 30;

instead of

float x =30;

because when i insert x like this,

dA.text("abc",x,x);

the x refers to position of x inside the PGraphics and i want to get the value of x if it's in the PGraphics

Clickable Link

[1 Reply]
- 22-May-2012 09:10 PM
- Forum: Programming Questions
Hi,
I've a chunk of text and i'd managed to split it up and detect which is a link using regex, the problem i have here is how am i to make that link clickable?

if i use link(), it will open the url for me automatically, but i want it to open when i click it.

is there any function to do that?

below is my code

String message = msg;

String[] list = split(message, ' ');

String checkURL = "^ http://([^/]+)(/.*$)";

for (int a = 0; a<list.length; a++){

if (list[a].matches(checkURL))link(list[a]);

message = join(list, " ");

};

words.add(message);

what i want to do is use a function to make the url clickable and join the split text back to one again.

Hope you people could give some suggestion, Thanks.

Problem setting frame position

[2 Replies]
- 22-May-2012 07:47 PM
- Forum: Programming Questions
Hi,
Currently i have a JDC browser on my application, and "frame.setLayout(new GridLayout(x,y));" is the code which sets the browser to appear in my application, the problem is it's always occupying half the size of the application no matter how i alter the number x and y.

Besides that whenever i set frame.setResizable(true); it won't display the browser and sometimes there will be this error "illegalArgumentException: Width(116) and Height(0) cannot be <=0

Below is part of the code:

void setup() {

size(950,650);

frame.setResizable(true)

frame.setLayout(new GridLayout(1,2));

browser=new aBrowser[1];

browser[0]=new aBrowser();

browser[0].initPanel(400,300);

browser[0].setURL("http://www.google.com/");

frame.add(browser[0].panel);

Hope you all could help me, thanks.

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