How would I repeat an action for a specific case?

Programming Questions

azurewinds

How would I repeat an action for a specific case?

in Programming Questions • 1 year ago

Hi,

I asked a question about my code before, but now I've come across another problem where the brushstroke designs (images) I specified for each letter of the alphabet, they only show once. For example when it sees a "p" in "apple" it only does the first "p" rather than both "p"'s I'm not sure how I would go about it. How would I make it repeat specific letters when needed to? Here's my code:

void tweet2design() {
    //background(233,240,242);
      //text(strTweets[j], textX+175,515, 650,100);

/*if(strTweets.length >= textX) {
      textY = textY + 50;
}*/ //loop();
      char[][] target;
      target = new char[strTweets.length][];
          for(int i = 0; i < strTweets.length; i++) {

      target[i] = strTweets[i].toCharArray();
      char c = strTweets[i].charAt(i);


    if(j < strTweets.length) {

    newMills = millis();

      if(newMills > oldMills + 9000) {
          fill(53,alphaValue);
          background(255);
          textAlign(CENTER);
          text(strTweets[j], textX + 175,518, 650,100);
          alphaValue -=a;
      if(alphaValue < 0 || alphaValue > 255) {
        a *= -1;
      }
          //println("first display_time " + counter);
      oldMills = newMills;
      j++;

      if(millis() - lastTime >= DISPLAY_TIME) {

      counter = ++counter % images.length;

      lastTime = millis();

    }
          if(alphaImage > 0) { alphaImage -= 1;
}
     if(millis() - lastTimeImg >= DISPLAY_TIME) {
tint(255, tintTime()%150);
lastTimeImg = millis();
     }
alphaImage -= b;


      /*switch(c){

              case '~': case '!': case '@': case '#': case '$': case '%': case '^': case '&':
              case '*': case '(': case ')': case '_': case '+': case '`': case '9': case '-':
              case '=': case '{': case '}': case '|': case ':': case '"': case '<': case '>':
              case '?': case '[': case ']': case ';': case ',': case '.': case '/': case '0':
              case ' ':
          case 'a':
              case 'A':
                  image(images[0],random(200,824),random(125,375));

          case 'b':
              case 'B':
                  image(images[1],random(200,824),random(125,375));

              case 'c':
              case 'C':
                   image(images[2],random(200,824),random(125,375));

              case '1':
              case 'd':
              case 'D':
                   image(images[3],random(200,824),random(125,375));

              case 'e':
              case 'E':
                   image(images[4],random(200,824),random(125,375));

              case 'f':
              case 'F':
                   image(images[5],random(200,824),random(125,375));
              case '2':
              case 'g':
              case 'G':
                   image(images[6],random(200,824),random(125,375));

          case 'h':
              case 'H':
                   image(images[7],random(200,824),random(125,375));

              case 'i':
              case 'I':
                   image(images[8],random(200,824),random(125,375));

              case '3':
              case 'j':
              case 'J':
                   image(images[9],random(200,824),random(125,375));

              case 'k':
              case 'K':
                   image(images[10],random(200,824),random(125,375));

          case 'l':
              case 'L':
                   image(images[11],random(200,824),random(125,375));

              case '4':
              case 'm':
              case 'M':
                   image(images[12],random(200,824),random(125,375));

          case 'n':
              case 'N':
                   image(images[13],random(200,824),random(125,375));

              case 'o':
              case 'O':
                   image(images[14],random(200,824),random(125,375));

              case '5':
          case 'p':
              case 'P':
                   image(images[15],random(200,824),random(125,375));

              case 'q':
              case 'Q':
                   image(images[16],random(200,824),random(125,375));

          case 'r':
              case 'R':
                   image(images[17],random(200,824),random(125,375));

              case '6':
              case 's':
              case 'S':
                   image(images[18],random(200,824),random(125,375));

          case 't':
              case 'T':
                   image(images[19],random(200,824),random(125,375));

              case 'u':
              case 'U':
                   image(images[20],random(200,824),random(125,375));

              case '7':
          case 'v':
              case 'V':
                   image(images[21],random(200,824),random(125,375));

              case 'w':
              case 'W':
                   image(images[22],random(200,824),random(125,375));

          case 'x':
              case 'X':
                   image(images[23],random(200,824),random(125,375));

              case '8':
              case 'y':
              case 'Y':
                   image(images[24],random(200,824),random(125,375));

          case 'z':
              case 'Z':
                   image(images[25],random(200,824),random(125,375));



      }

break;*/
}
else {

          fill(53,alphaValue);
          background(255);
          textAlign(CENTER);
          text(strTweets[j], textX + 175,518, 650,100);
          alphaValue +=a;
      if(alphaValue < 0 || alphaValue > 255) {
        a *= -1;
      }
             if(alphaImage > 0) { alphaImage -= 1;
}
tint(255, tintTime()%150);
alphaImage -= b;


      switch(c){
              case '~': case '!': case '@': case '#': case '$': case '%': case '^': case '&':
              case '*': case '(': case ')': case '_': case '+': case '`': case '9': case '-':
              case '=': case '{': case '}': case '|': case ':': case '"': case '<': case '>':
              case '?': case '[': case ']': case ';': case ',': case '.': case '/': case '0':
              case ' ':
          case 'a':
              case 'A':
                  image(images[0],random(200,824),random(125,375));

          case 'b':
              case 'B':
                  image(images[1],random(200,824),random(125,375));

              case 'c':
              case 'C':
                   image(images[2],random(200,824),random(125,375));

              case '1':
              case 'd':
              case 'D':
                   image(images[3],random(200,824),random(125,375));

              case 'e':
              case 'E':
                   image(images[4],random(200,824),random(125,375));

              case 'f':
              case 'F':
                   image(images[5],random(200,824),random(125,375));
              case '2':
              case 'g':
              case 'G':
                   image(images[6],random(200,824),random(125,375));

          case 'h':
              case 'H':
                   image(images[7],random(200,824),random(125,375));

              case 'i':
              case 'I':
                   image(images[8],random(200,824),random(125,375));

              case '3':
              case 'j':
              case 'J':
                   image(images[9],random(200,824),random(125,375));

              case 'k':
              case 'K':
                   image(images[10],random(200,824),random(125,375));

          case 'l':
              case 'L':
                   image(images[11],random(200,824),random(125,375));

              case '4':
              case 'm':
              case 'M':
                   image(images[12],random(200,824),random(125,375));

          case 'n':
              case 'N':
                   image(images[13],random(200,824),random(125,375));

              case 'o':
              case 'O':
                   image(images[14],random(200,824),random(125,375));

              case '5':
          case 'p':
              case 'P':
                   image(images[15],random(200,824),random(125,375));

              case 'q':
              case 'Q':
                   image(images[16],random(200,824),random(125,375));

          case 'r':
              case 'R':
                   image(images[17],random(200,824),random(125,375));

              case '6':
              case 's':
              case 'S':
                   image(images[18],random(200,824),random(125,375));

          case 't':
              case 'T':
                   image(images[19],random(200,824),random(125,375));

              case 'u':
              case 'U':
                   image(images[20],random(200,824),random(125,375));

              case '7':
          case 'v':
              case 'V':
                   image(images[21],random(200,824),random(125,375));

              case 'w':
              case 'W':
                   image(images[22],random(200,824),random(125,375));

          case 'x':
              case 'X':
                   image(images[23],random(200,824),random(125,375));

              case '8':
              case 'y':
              case 'Y':
                   image(images[24],random(200,824),random(125,375));

          case 'z':
              case 'Z':
                   image(images[25],random(200,824),random(125,375));

      }
      break;

}

    }
        }
}

If someone could help me out with this or point me in the right direction. I'd really appreciate it! Thanks!

Replies(5)

Chrisir

Re: How would I repeat an action for a specific case?

1 year ago

that's is a weird code

remember: Use Ctrl-t to format the code automatically

save program under a new name then you can delete all things that are in comments like /* */ (you still have a copy)

remember:
when using

case a
case b
image(images[24],random(200,824),random(125,375));

you need break;

case a
case b
image(images[24],random(200,824),random(125,375));
break;

that's missing throughout the program.

Also, when you have

case '8':
case 'y':
case 'Y':
image(images[24],random(200,824),random(125,375));

try to get the ascii of the input and derive the imageNumber from the ascii

Chrisir

azurewinds

Re: How would I repeat an action for a specific case?

1 year ago

Hi Chrisir,

Thanks for the feedback. The problem is if I add those breaks, the switch case won't run through the letters and it'll just show that first letter repeatedly moving to different locations. I added the break at the end of the case so it can read through the letters, but now I have a problem with how to display a letter more than once when necessary.

What do you mean by "try to get the ascii of the input and derive the imageNumber from the ascii"? I'm sorry, I'm not that great with coding so my coding ability and knowledge is limited.

dr.mo

Re: How would I repeat an action for a specific case?

1 year ago

in general you would really benefit from formatting your code properly. currently it's very hard to read. but i think i understand what you are trying to do. as has been pointed out you can convert a character to a number. every character is stored by the computer as a number and the most common standard for this is ascii ( http://en.wikipedia.org/wiki/ASCII). using a cast you can convert any character into its equivalent ascii number. this means you can effectively use a character as an index into a list as follows:

int index = (int)'a';
println("letter a is stored using number " + index);
image(images[index],0,0); //fetch the image associated with this number

ascii characters a to z are stored as number 97 to 122 - you can test this yourself with the above code. this means all you need to do to draw a word using an image list is the following:

String myInputString = "something"; //your input string, tweet or whatever
//cycle through all the characters in this input string
for(int i = 0; i < myInputString.length(); i++)
{
//for each character determine the equivalent ascii number
int asciiEquivalent = (int) myInputString.charAt(i);
//if we are between a and z draw the image
if(asciiEquivalent >= 97 && asciiEquivalent <= 122)
{
//subtract 97 because our images list starts at 0 of course
image(images[asciiEquivalent-97], random(200,824),random(125,375));
}
}
//done!!

PS - what i mean by formatting is using indentation of code blocks correctly like this

if()
{
if()
{
for()
{
if()
{
//do something
}
else
{
}
}
}
}

this way you can see immediately where each 'if' or 'for' loop etc starts and ends and how they are nested.

Chrisir

Re: How would I repeat an action for a specific case?

1 year ago

Unfortunately before I saw the excellent answer above I was about t write my own code.

Since you use images we can't run your code.

Here is mine:

final String signsList = "~!@#$%^&*()_+`9-={}|:<>?[], .0";
//
void setup () {
size (22, 22);
stroke(255, 2, 2); // red
} // func
//
void draw () {
//
showWord ("Apple and Pie.") ;
//
noLoop();
} // func
//
// -------------------------------------------------------
//
void showWord (String myWord) {
int imageNumber=0;
for (int i=0; i < myWord.length(); i++) {
imageNumber=0;
int asciiValue = int(myWord.charAt(i));
if ((myWord.charAt(i) >= 'A') && (myWord.charAt(i) <= 'Z'))
{
imageNumber = asciiValue-65; // A etc.
}
else if (myWord.charAt(i) >= 'a' && myWord.charAt(i) <= 'z' )
{
imageNumber = asciiValue-97; // a etc.
}
// have more here, see
// http://de.wikipedia.org/wiki/American_Standard_Code_for_Information_Interchange#ASCII-Tabelle
else if (signsList.indexOf(myWord.charAt(i)) > -1 ) {
// signs
imageNumber = 0;
}
else {
println("not found");
imageNumber = asciiValue; // a = 1
} // if else
print ( myWord.charAt(i) + " has ascii " + asciiValue + " which makes it image number " ) ;
println(imageNumber + ".");
} // for
} // func
//
// -------------------------------------------------------------------------------------------

azurewinds

Re: How would I repeat an action for a specific case?

1 year ago

Thank you for the help! It definitely helped me somewhat! Thanks!

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