Implement 2D array textures

[libs/gl.git] / scripts / makefont.py

diff --git a/scripts/makefont.py b/scripts/makefont.py
index ad12fee828405860b91159401466ffc47b48eafd..1d7a4332906a55e02dc0df2f8009648b4ee6408b 100755 (executable)
--- a/scripts/makefont.py
+++ b/scripts/makefont.py
@@ -1,36 +1,65 @@
 #!/usr/bin/python
 
+caps = list(range(ord("A"), ord("Z")+1))
+xchars = [ord(c) for c in "acemnorsuvwxz"]
+
 def convert_def(fn):
        src = file(fn)
 
-       line = src.readline()
-       tw, th, fh, fa, fd = map(int, line.split())
+       result = ""
+       header = ""
+       cap_height = []
+       x_height = []
+       for line in src.readlines():
+               line = line.strip()
+               if not line or line[0]=='#':
+                       continue
 
-       result = "native_size %d;\n"%fh
-       result += "ascent %.3f;\n"%(float(fa)/fh)
-       result += "descent %.3f;\n"%(float(fd)/fh)
+               parts = line.split()
 
-       for line in src.readlines():
-               g, x, y, w, h, ox, oy, a = map(int, line.split())
-               result += "glyph %d\n{\n"%g
-               result += "\ttexcoords %f %f %f %f;\n"%(float(x)/tw, float(th-y-h)/th, float(x+w)/tw, float(th-y)/th)
-               result += "\tsize %.3f %.3f;\n"%(float(w)/fh, float(h)/fh)
-               result += "\toffset %.3f %.3f;\n"%(float(ox)/fh, float(oy)/fh)
-               result += "\tadvance %.3f;\n"%(float(a)/fh)
-               result += "};\n"
+               if parts[0]=="font":
+                       tw, th, fh, fa, fd = map(int, parts[1:])
+                       header += "native_size %d;\n"%fh
+                       header += "ascent %.3f;\n"%(float(fa)/fh)
+                       header += "descent %.3f;\n"%(float(fd)/fh)
+               elif parts[0]=="glyph":
+                       g, x, y, w, h, ox, oy, a = map(int, parts[1:])
+                       result += "glyph %d\n{\n"%g
+                       result += "\ttexcoords %f %f %f %f;\n"%(float(x)/tw, float(th-y-h)/th, float(x+w)/tw, float(th-y)/th)
+                       result += "\tsize %.3f %.3f;\n"%(float(w)/fh, float(h)/fh)
+                       result += "\toffset %.3f %.3f;\n"%(float(ox)/fh, float(oy)/fh)
+                       result += "\tadvance %.3f;\n"%(float(a)/fh)
+                       result += "};\n"
 
-       return result
+                       if g in caps:
+                               cap_height.append(h)
+                       elif g in xchars:
+                               x_height.append(h)
+               elif parts[0]=="kern":
+                       l, r, d = map(int, parts[1:])
+                       result += "kerning %d %d %.3f;\n"%(l, r, float(d)/fh)
+
+       if cap_height:
+               header += "cap_height %.3f;\n"%(float(cap_height[len(cap_height)*2/3])/fh)
+       if x_height:
+               header += "x_height %.3f;\n"%(float(x_height[len(x_height)*2/3])/fh)
 
-def make_font(fn, size):
+       return header+result
+
+def make_font(fn, size, ch_range, autohinter, margin, padding):
        import maketex
        import os
 
-       if os.system("ttf2png \"%s\" -o makefont-tmp.png -d makefont-tmp.def -t -p -s %d"%(fn, size)):
+       cmd = "ttf2png \"%s\" -o makefont-tmp.png -d makefont-tmp.def -t -p -s %d -m %d -n %d"%(fn, size, margin, padding)
+       if ch_range:
+               cmd += " -r %d,%d"%ch_range
+       if autohinter:
+               cmd += " -a"
+       if os.system(cmd):
                raise Exception("Could not execute ttf2png")
 
        result = "texture\n{\n"
-       result += "wrap CLAMP_TO_EDGE;\n"
-       result += maketex.make_tex("makefont-tmp.png")
+       result += maketex.make_tex("makefont-tmp.png", wrap="CLAMP_TO_EDGE")
        result += "};\n"
        result += convert_def("makefont-tmp.def")
 
@@ -39,12 +68,23 @@ def make_font(fn, size):
 
        return result
 
+def parse_range(s):
+       return tuple(map(int, s.split(',', 1)))
+
 if __name__=="__main__":
        import sys
+       import argparse
+
+       parser = argparse.ArgumentParser()
+       parser.add_argument("-s", "--size", default=10, type=int, metavar="NUM", help="Font size in pixels")
+       parser.add_argument("-a", "--autohinter", action="store_const", const=True, default=False, help="Force autohinter")
+       parser.add_argument("-m", "--margin", default=0, type=int, metavar="NUM", help="Margin around image edge in pixels")
+       parser.add_argument("-n", "--padding", default=1, type=int, metavar="NUM", help="Padding between glyphs in pixels")
+       parser.add_argument("-r", "--range", type=parse_range, metavar="START,END", help="Range of code points to include")
+       parser.add_argument("ttf", metavar="font.ttf", help="TrueType file to read")
+       parser.add_argument("outfile", help="MspGL font file to write")
+
+       args = parser.parse_args()
 
-       if len(sys.argv)<4:
-               import os
-               print "Usage: %s <font.ttf> <outfile> <size>"%os.path.basename(sys.argv[0])
-       else:
-               out = file(sys.argv[2], "w")
-               out.write(make_font(sys.argv[1], int(sys.argv[3])))
+       out = file(args.outfile, "w")
+       out.write(make_font(args.ttf, args.size, args.range, args.autohinter, args.margin, args.padding))