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# Copyright 2006-2007 Nanorex, Inc. See LICENSE file for details.
"""
Fond3D.py - a vector-drawing OpenGL font.
The font is a vector-drawing thing. The entries in the font are
integer coordinates. The drawing space is 5x7.
$Id$
History:
wware 060324 - created
bruce 071030 - split Font3D out of dimensions module (since used in drawer.py)
"""
__author__ = "Will"
import types
import Numeric
from Numeric import dot
from OpenGL.GL import glVertex
from geometry.VQT import cross
from graphics.drawing.CS_draw_primitives import drawline # import cycle
_font = {
' ': ( ),
'A': (((0, 0),
(0, 4),
(1, 6),
(3, 6),
(4, 4),
(4, 0)),
((0, 3),
(4, 3))),
'B': (((0, 6),
(3, 6),
(4, 5),
(4, 4),
(3, 3),
(1, 3)),
((3, 3),
(4, 2),
(4, 1),
(3, 0),
(0, 0)),
((1, 6),
(1, 0))),
'C': ((4, 5),
(3, 6),
(1, 6),
(0, 5),
(0, 1),
(1, 0),
(3, 0),
(4, 1)),
'D': (((0, 6),
(3, 6),
(4, 5),
(4, 1),
(3, 0),
(0, 0)),
((1, 6),
(1, 0))),
'E': (((4, 6),
(0, 6),
(0, 0),
(4, 0)),
((0, 3),
(3, 3))),
'F': (((4, 6),
(0, 6),
(0, 0)),
((0, 3),
(3, 3))),
'G': ((4, 5),
(3, 6),
(1, 6),
(0, 5),
(0, 1),
(1, 0),
(3, 0),
(4, 1),
(4, 3),
(2, 3)),
'H': (((0, 6),
(0, 0)),
((4, 6),
(4, 0)),
((0, 3),
(4, 3))),
'I': (((1, 6),
(3, 6)),
((1, 0),
(3, 0)),
((2, 6),
(2, 0))),
'J': (((3, 6),
(3, 1),
(2, 0),
(1, 0),
(0, 1),
(0, 2)),
((2, 6),
(4, 6))),
'K': (((0, 0),
(0, 6)),
((0, 2),
(4, 6)),
((2, 4),
(4, 0))),
'L': ((0, 6),
(0, 0),
(4, 0)),
'M': ((0, 0),
(0, 6),
(2, 2),
(4, 6),
(4, 0)),
'N': ((0, 0),
(0, 6),
(4, 0),
(4, 6)),
'O': ((4, 5),
(3, 6),
(1, 6),
(0, 5),
(0, 1),
(1, 0),
(3, 0),
(4, 1),
(4, 5)),
'P': ((0, 3),
(3, 3),
(4, 4),
(4, 5),
(3, 6),
(0, 6),
(0, 0)),
'Q': (((4, 5),
(3, 6),
(1, 6),
(0, 5),
(0, 1),
(1, 0),
(3, 0),
(4, 1),
(4, 5)),
((2, 2),
(4, 0))),
'R': (((0, 3),
(3, 3),
(4, 4),
(4, 5),
(3, 6),
(0, 6),
(0, 0)),
((2, 3),
(4, 0))),
'S': ((4, 5),
(3, 6),
(1, 6),
(0, 5),
(0, 4),
(1, 3),
(3, 3),
(4, 2),
(4, 1),
(3, 0),
(1, 0),
(0, 1)),
'T': (((0, 6),
(4, 6)),
((2, 6),
(2, 0))),
'U': ((0, 6),
(0, 1),
(1, 0),
(3, 0),
(4, 1),
(4, 6)),
'V': ((0, 6),
(2, 0),
(4, 6)),
'W': ((0, 6),
(1, 0),
(2, 4),
(3, 0),
(4, 6)),
'X': (((0, 0),
(4, 6)),
((0, 6),
(4, 0))),
'Y': (((0, 6),
(2, 3),
(4, 6)),
((2, 3),
(2, 0))),
'Z': ((0, 6),
(4, 6),
(0, 0),
(4, 0)),
# do we need lowercase? not yet
'.': ((2, 0),
(3, 0),
(3, 1),
(2, 1),
(2, 0)),
'/': ((0, 0),
(3, 6)),
'#': (((1, 0),
(2, 6)),
((2, 0),
(3, 6)),
((0, 4),
(4, 4)),
((0, 2),
(4, 2))),
'+': (((0, 3),
(4, 3)),
((2, 5),
(2, 1))),
'-': ((0, 3),
(4, 3)),
'*': (((0, 3),
(4, 3)),
((1, 1),
(3, 5)),
((1, 5),
(3, 1))),
# Still need: ~ ` ! @ $ % ^ & ( ) _ = [ ] { } ; : ' " | < > , ?
'0': (((0, 6),
(4, 0)),
((1, 0),
(0, 1),
(0, 5),
(1, 6),
(3, 6),
(4, 5),
(4, 1),
(3, 0),
(1, 0))),
'1': ((1, 0),
(3, 0),
(2, 0),
(2, 6),
(1, 5)),
'2': ((0, 5),
(1, 6),
(3, 6),
(4, 5),
(4, 3),
(0, 1),
(0, 0),
(4, 0)),
'3': ((0, 5),
(1, 6),
(3, 6),
(4, 5),
(4, 4),
(3, 3),
(1, 3),
(3, 3),
(4, 2),
(4, 1),
(3, 0),
(1, 0),
(0, 1)),
'4': ((1, 6),
(0, 3),
(4, 3),
(4, 6),
(4, 0)),
'5': ((4, 6),
(0, 6),
(0, 3),
(3, 3),
(4, 2),
(4, 1),
(3, 0),
(0, 0)),
'6': ((3, 6),
(0, 4),
(0, 1),
(1, 0),
(3, 0),
(4, 1),
(4, 2),
(3, 3),
(1, 3),
(0, 2)),
'7': ((0, 6),
(4, 6),
(2, 0)),
'8': ((1, 3),
(0, 4),
(0, 5),
(1, 6),
(3, 6),
(4, 5),
(4, 4),
(3, 3),
(1, 3),
(0, 2),
(0, 1),
(1, 0),
(3, 0),
(4, 1),
(4, 2),
(3, 3)),
'9': ((1, 0),
(4, 3),
(4, 5),
(3, 6),
(1, 6),
(0, 5),
(0, 4),
(1, 3),
(3, 3),
(4, 4)),
}
WIDTH = 5
HEIGHT = 7
SCALE = 0.08
# TODO: WIDTH, HEIGHT should be Font3D attributes;
# right now, they are public, used in dimensions.py.
# [bruce 071030 comment]
class Font3D:
def __init__(self, xpos=0, ypos=0, right=None, up=None,
rot90=False, glBegin=False):
self.glBegin = glBegin
if right is not None and up is not None:
# The out-of-screen direction for text should always agree with
# the "real" out-of-screen direction.
self.outOfScreen = cross(right, up)
if rot90:
self.xflip = xflip = right[1] < 0.0
else:
self.xflip = xflip = right[0] < 0.0
xgap = WIDTH
halfheight = 0.5 * HEIGHT
if xflip:
xgap *= -SCALE
def fx(x): return SCALE * (WIDTH - 1 - x)
else:
xgap *= SCALE
def fx(x): return SCALE * x
if rot90:
ypos += xgap
xpos -= halfheight * SCALE
def tfm(x, y, yoff1, yflip):
if yflip:
y1 = SCALE * (HEIGHT - 1 - y)
else:
y1 = SCALE * y
return Numeric.array((xpos + yoff1 + y1, ypos + fx(x), 0.0))
else:
xpos += xgap
ypos -= halfheight * SCALE
def tfm(x, y, yoff1, yflip):
if yflip:
y1 = SCALE * (HEIGHT - 1 - y)
else:
y1 = SCALE * y
return Numeric.array((xpos + fx(x), ypos + yoff1 + y1, 0.0))
self.tfm = tfm
def drawString(self, str, yoff=1.0, color=None, tfm=None,
_font_X=_font['X']):
n = len(str)
if not self.glBegin:
assert color is not None
if hasattr(self, 'tfm'):
assert tfm is None
if self.xflip:
def fi(i): return i - (n + 1)
else:
def fi(i): return i
# figure out what the yflip should be
p0 = self.tfm(0, 0, yoff, False)
textOutOfScreen = cross(self.tfm(1, 0, yoff, False) - p0,
self.tfm(0, 1, yoff, False) - p0)
yflip = dot(textOutOfScreen, self.outOfScreen) < 0.0
def tfmgen(i):
def tfm2(x, y):
return self.tfm(x + (WIDTH+1) * fi(i), y, yoff, yflip)
return tfm2
else:
assert tfm is not None
def tfmgen(i):
def tfm2(x, y):
return tfm(x + i * (WIDTH+1), y)
return tfm2
for i in range(n):
# A pen-stroke is a tuple of 2D vectors with integer
# coordinates. Each character is represented as a stroke,
# or a tuple of strokes e.g. '+' or 'X' or '#'.
def drawSequence(seq, tfm=tfmgen(i)):
if len(seq) == 0:
return # a space character has an empty sequence
if type(seq[0][0]) is not types.IntType:
# handle multi-stroke characters
for x in seq:
drawSequence(x)
return
seq = map(lambda tpl: apply(tfm,tpl), seq)
for i in range(len(seq) - 1):
pos1, pos2 = seq[i], seq[i+1]
if self.glBegin:
# This is what we do for grid planes, where "somebody"
# is drawGPGrid in drawers.py.
# Somebody has already taken care of glBegin(GL_LINES).
# TODO: explain this in docstring.
glVertex(pos1[0], pos1[1], pos1[2])
glVertex(pos2[0], pos2[1], pos2[2])
# Somebody has already taken care of glEnd().
else:
# This is what we do for dimensions.
drawline(color, seq[i], seq[i+1])
drawSequence(_font.get(str[i], _font_X))
return
pass
# end
|
