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Topic: fonts (Read 2706 times) |
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Martin
    
 
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fonts
« on: Jan 8th, 2003, 1:12am » |
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have always wondered how one can make his/her own font like those under fonts/ 
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fry
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Re: fonts
« Reply #1 on: Jan 8th, 2003, 5:37am » |
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hrm.. yeah.. well..
it's a <insert adjective here> format that dates back to the early 90s with the 'visible language workshop' the predecessor to the acg at the mit media lab.
unfortunately there isn't currently a way to make the fonts (except with a bizarre tool that we use internally that was written five or so years ago for macos).
it's one of those things for which we need a better solution.. this is just an interim one until we get a font generator built into the app.. 
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Martin
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Re: fonts
« Reply #2 on: Jan 8th, 2003, 4:11pm » |
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ah... the brainchild of muriel cooper. ok ok. thanks for the info now i know what .vlw.gz stands for  looking forward to 'p5 helper apps' 
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fjen
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Re: fonts
« Reply #3 on: Jul 18th, 2004, 12:50pm » |
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fry,
could you possibly make the .vlw file-format public? i'd like to generate my own fonts directly from within fontlab (using python) ..
flo
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fry
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Re: fonts
« Reply #4 on: Jul 18th, 2004, 4:26pm » |
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sure.. i don't actually have a 'reference' or spec or anything, but this is the code for reading and writing the fonts. BFont has become PFont in rev 70, so this is the latest code.
Code:public class PFont implements PConstants {
//int firstChar = 33; // always
int charCount;
PImage images[];
// image width, a power of 2
// note! these will always be the same
int iwidth, iheight;
// float versions of the above
float iwidthf, iheightf;
// mbox is just the font size (i.e. 48 for most vlw fonts)
int mbox;
int value[]; // char code
int height[]; // height of the bitmap data
int width[]; // width of bitmap data
int setWidth[]; // width displaced by the char
int topExtent[]; // offset for the top
int leftExtent[]; // offset for the left
// scaling, for convenience
float size;
float leading;
int ascii[]; // quick lookup for the ascii chars
boolean cached;
public PFont() { } // for PFontAI subclass and font builder
public PFont(InputStream input) throws IOException {
DataInputStream is = new DataInputStream(input);
charCount = is.readInt();
int numBits = is.readInt();
int mboxX = is.readInt(); // not used, just fontsize (48)
int mboxY = is.readInt(); // also just fontsize (48)
// only store this one for leading calc
mbox = mboxY;
// size for image ("texture") is next power of 2
// over the font size. for most vlw fonts, the size is 48
// so the next power of 2 is 64.
iwidth = (int)
Math.pow(2, Math.ceil(Math.log(mboxX) / Math.log(2)));
iheight = (int)
Math.pow(2, Math.ceil(Math.log(mboxY) / Math.log(2)));
iwidthf = (float) iwidth;
iheightf = (float) iheight;
// font size is 48, so default leading is 48 * 1.2
// this is same as what illustrator uses for the default
//defaultLeading = ((float)mboxY / iheightf) * 1.2f;
int baseHt = is.readInt(); // zero, ignored
is.readInt(); // ignore 4 for struct padding
// allocate enough space for the character info
value = new int[charCount];
height = new int[charCount];
width = new int[charCount];
setWidth = new int[charCount];
topExtent = new int[charCount];
leftExtent = new int[charCount];
ascii = new int[128];
for (int i = 0; i < 128; i++) ascii[i] = -1;
// read the information about the individual characters
for (int i = 0; i < charCount; i++) {
value[i] = is.readInt();
height[i] = is.readInt();
width[i] = is.readInt();
setWidth[i] = is.readInt();
topExtent[i] = is.readInt();
leftExtent[i] = is.readInt();
// pointer in the c version, ignored
is.readInt();
// cache locations of the ascii charset
if (value[i] < 128) ascii[value[i]] = i;
}
images = new PImage[charCount];
for (int i = 0; i < charCount; i++) {
//int pixels[] = new int[64 * 64];
int pixels[] = new int[iwidth * iheight];
//images[i] = new PImage(pixels, 64, 64, ALPHA);
images[i] = new PImage(pixels, iwidth, iheight, ALPHA);
int bitmapSize = height[i] * width[i];
byte temp[] = new byte[bitmapSize];
is.readFully(temp);
// convert the bitmap to an alpha channel
int w = width[i];
int h = height[i];
for (int x = 0; x < w; x++) {
for (int y = 0; y < h; y++) {
int valu = temp[y*w + x] & 0xff;
//images[i].pixels[y*64 + x] = valu;
images[i].pixels[y * iwidth + x] = valu;
// the following makes javagl more happy..
// not sure what's going on
//(valu << 24) | (valu << 16) | (valu << 8) | valu; //0xffffff;
//System.out.print((images[i].pixels[y*64+x] > 128) ? "*" : ".");
}
//System.out.println();
}
//System.out.println();
}
cached = false;
resetSize();
resetLeading(); // ??
}
public void write(OutputStream output) throws IOException {
DataOutputStream os = new DataOutputStream(output);
os.writeInt(charCount);
os.writeInt(8); // numBits
os.writeInt(mbox); // mboxX (font size)
os.writeInt(mbox); // mboxY (font size)
os.writeInt(0); // baseHt, ignored
os.writeInt(0); // struct padding for c version
for (int i = 0; i < charCount; i++) {
os.writeInt(value[i]);
os.writeInt(height[i]);
os.writeInt(width[i]);
os.writeInt(setWidth[i]);
os.writeInt(topExtent[i]);
os.writeInt(leftExtent[i]);
os.writeInt(0); // padding
}
for (int i = 0; i < charCount; i++) {
//int bitmapSize = height[i] * width[i];
//byte bitmap[] = new byte[bitmapSize];
for (int y = 0; y < height[i]; y++) {
for (int x = 0; x < width[i]; x++) {
os.write(images[i].pixels[y * width[i] + x] & 0xff);
}
}
}
os.flush();
os.close(); // can/should i do this?
}
} |
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fry
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Re: fonts
« Reply #5 on: Jul 18th, 2004, 4:27pm » |
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even simpler, you can also just use "Create Font" under the sketch menu to make a new font (since that hadn't been complete when this thread started a year or so ago).
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fjen
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Re: fonts
« Reply #6 on: Jul 18th, 2004, 5:58pm » |
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thanks very much fry. i know about create font, it's just that i do a lot with letterror's robofab inside of fontlab's python and i wanted to limit production steps a little. i'm not sure how to get this all to work together but i'll make an example once it works.
best,
F
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