Loading...
Logo
Processing Forum
  • Screen name:
    Insentience
Insentience's Profile
11 Posts
23 Responses
0 Followers

Activity Trend

Last 30 days
Show:
Private Message
  • Using set() when dealing with images containing transparency causes problems.
    Hello, been a while.

    I would like to combine 2 equal dimension PImages into one PImage by set() -ing one of the images directly on top of another

    The problem with this is that if the top image has transparency, the set() function will replace all the transparent pixels with the colour white when set() -ing it rather than skip the transparent pixels.

    How can I solve this problem? I have tried using the blend() function but it didn't work.
  • Slow images
    I have some code that loads a 512 by 512 .png. Each 32 * 32 section of the png is a separate tile and I wrote some code that reads an int 2D array and prints the tile it points to. Here's an example of my code:
    1. PImage tileSheet;

    3. void setup ()
    4. {
    5.   size(512, 512);
    6.   tileSheet = loadImage ("sheet.png");
    7. }

    9. void draw ()
    10. {
    11.   displayTiles();
    12. }

    14. void displayTiles ()
    15. {

    17.   for (int i = 0; i < 16; i++)
    18.   {
    19.     for (int j = 0; j < 16; j++)
    20.     {
    21.       drawTile (i, j * 32, i * 32);
    22.     }
    23.   }

    25. }

    27. void drawTile (int tileCode, int xPos, int yPos)
    28. {  
    29.   int tileX = tileCode * 32;
    30.   int tileY = tileCode * 32;
    31.   
    32.   image(tileSheet.get(tileX, tileY, 32, 32), xPos, yPos);
    33. }

    So basically, I'm drawing 16 rows of tiles with each line drawing a different tile 16 times. However, my program is really slow! What am I doing wrong? (I know this example is full speed, but I'm doing the exact same thing except on a very slightly larger scale and I get half my normal framerate)
  • Minim Volume Control problems
    I've tried to follow the minim documentation to control the volume of the track playing, but I can't get it to work. What am I doing wrong? Here's my code:

    1. import ddf.minim.*;
    2. import ddf.minim.signals.*;
    3. import ddf.minim.analysis.*;
    4. import ddf.minim.effects.*;

    6. AudioPlayer gameMusic;
    7. Minim songLoader;
    8. AudioOutput out;

    10. float volLevel = 0;

    12. void setup()
    13. {
    14.   songLoader = new Minim(this);
    15.   startTrack("01.mp3");
    16. }

    18. void draw ()
    19. {
    20.    volLevel = (volLevel + 0.1) % 1;

    22.    updateTrackVol(volLevel);
    23. }

    25. void startTrack (String trackName)
    26. {
    27.     gameMusic = songLoader.loadFile(trackName);
    28.     gameMusic.loop();
    29.   
    30. }

    32. void updateTrackVol (float amount)
    33. {
    34.   out = songLoader.getLineOut();
    35.   out.setVolume(amount);
    36. }
  • Playing a sound once when you've highlighted an option with the mouse
      1. import ddf.minim.*;
      2. import ddf.minim.signals.*;
      3. import ddf.minim.analysis.*;
      4. import ddf.minim.effects.*;
      5. PFont menuFont;

      8. AudioPlayer mSound;
      9. Minim mSoundLoader;

      11. int mouseSound = -1;
      12. void setup ()
      13. {
      14.   precacheSound();
      15.   menuFont = loadFont("Perpetua-32.vlw");
      16. }

      18. void draw ()
      19. {
      20.  selectableText("Test", 50, 50, 1);
      21. }
      22. boolean highlighted (float x, float y, float x2, float y2)
      23. {
      24.   if (mouseX >= x && mouseX <= x2 && mouseY >= y && mouseY <= y2)
      25.     return true;
      26.     
      27.   return false;
      28. }

      30. void selectableText (String words, float xPos, float yPos, int soundNum)
      31. {
      32.   textFont(menuFont, 32);
      33.   
      34.   if (highlighted(xPos, yPos - textAscent(), xPos + textWidth(words), yPos + textDescent()))
      35.   {
      36.     fill(255);
      37.     if (mouseSound != soundNum)
      38.     {
      39.       mouseSound = soundNum;
      40.       mSound.play();
      41.     }
      42.   }
      43.   else
      44.   {
      45.     fill(100);
      46.     if (mouseSound == soundNum)
      47.     {
      48.       mouseSound = -1;
      49.     }
      50.   }
      51.     
      52.   text(words, xPos, yPos);
      53. }

      55. void precacheSound ()
      56. {
      57.   mSoundLoader = new Minim(this);
      58.   
      59.   mSound = mSoundLoader.loadFile("highlight.wav");
      60. }


      With this code, whenever I highlight a text option, it brightens up (via the fill()). However, I cannot get sound to play. It sometimes play when it's supposed to, and it sometimes doesn't. What am I doing wrong?
    • Sketch window title
      Simply put, is there a function that'll change the text that appears in the title bar of the sketch window? Right now, it matches my .pde file name. However, I want to be able to change it without changing the name of my file.

      Thank you very much.
    • Image luminosity
      I'll keep this short. Let's say I'm trying to print two images on top of each other:

      1. PImage peach = loadimage("peach.png");
      2. PImage grey = loadimage("grey.png");

      4. void draw()
      5. {
      6.       image(peach, 0, 0, 256, 256);

      8.       //Next image to print on top of previous one
      9.       image(grey, 0, 0, 256, 256);
      10. }

      The images:

      peach.png:


      grey.png:



      With my current code, all you would see is the grey box (since the peach gets overlapped). However, in photoshop, if you put the grey layer on top of the peach layer and turn the blend mode of the grey layer to 'luminosity', you get this result:




      My question is, how can I produce that^^ same result in processing? Please breakdown your explanation.

      Thank you very much
    • Holding down a key bug
      Ok, what happens when you hold down a letter on the keyboard? (ie 'k'). One 'k' will display, then after a small time lapse, a stream of ks will flood the screen.

      This causes a problem. I want to detect when the user is holding down the key, but the pause that happens bugs up my program. Any way around this?

      Sorry if I've confused you. 
    • Mouse over sound
      Ok, I've programmed my menu options. They highlight green whenever the mouse cursor is over them and return to black when my mouse isn't over it.

      Now I want a sound to play once when I've highlighted an option. Here's what I'm basically doing (not real code):

      1. void draw()
      2. {
      3.       int text_r = 0;
      4.       int text_g = 0;
      5.       int text_b = 0;

      7.       if (mouseOverOption() == true)
      8.       {
      9.             text_g = 200;
      10.             playSound();
      11.       }

      13.       drawText("Option", text_r, text_g, text_b);
      14. }
      The problem is that if my mouse lingers on an option, the sound plays countless times rapidly. How can I change my code so that sound is only played once when you highlight an option?

      Thanks.