Processing 1.0 - Processing Discourse - Getting kerning data from font

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Getting kerning data from font (Read 1336 times)

glenn

Getting kerning data from font
Apr 4^th, 2009, 1:24am

Hi
I'm trying to do my own fancy text effects, such as warping text around curves etc, but because I have to put one character at a time onto the screen, I need to adust the spacing according to the kerning.

How do I access the kerning tables/info for the font used? I noticed that there is a kern method listed in the development pages, but it doesn't support .vlw files - that would have been handy!

Thanks for any help,
Glenn.

http://www.butterfly.ie

PhiLho

Re: Getting kerning data from font
Reply #1 - Apr 4^th, 2009, 11:36am

VLW files have no kerning information. The best you can get from them is character width:
Code:

void setup()
{
  size(500, 300);
  noLoop();
  background(#AAFFEE);

  String msg = "Processing is awesome!";
  int ml = msg.length();
  PFont fi = loadFont("Impact-48.vlw");
  textFont(fi);
  char[] msgChars = new char[ml];
  msg.getChars(0, ml, msgChars, 0);
  float pos = 10;
  for (int i = 0; i < ml; i++)
  {
    char c = msgChars[i];
    fill(60, 90, map(i, 0, ml, 0, 255));
    text(c, 10 + 18 * i, 100);

    text(c, pos, 200);
    pos += textWidth(c);
  }
}

glenn Junior Member Offline Posts: 86	Re: Getting kerning data from font Reply #2 - Apr 5^th, 2009, 6:36am that's just what I needed thanks! -although the colour gradient was a bit too fancy
	http://www.butterfly.ie

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: Getting kerning data from font Reply #3 - Apr 6^th, 2009, 3:51am glenn wrote on Apr 5^th, 2009, 6:36am: although the colour gradient was a bit too fancy That's just one of the simplest effects to illustrate characters are drawn individually while keeping correct spacing.

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