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#Copyright (c) 2008-10, Walter Bender
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:
#The above copyright notice and this permission notice shall be included in
#all copies or substantial portions of the Software.
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#THE SOFTWARE.
IGNORE = ["hideblocks", "showblocks", "fullscreen", "polar", "cartesian",
"sandwichbottom", "id"]
import math
from tautils import walk_stack
try:
from sugar.datastore import datastore
except:
pass
def save_logo(tw):
""" We need to set up the Turtle Art color palette and color processing. """
color_processing = "\
to tasetpalette :i :r :g :b :myshade \r\
make \"s ((:myshade - 50) / 50) \r\
ifelse lessp :s 0 [ \r\
make \"s (1 + (:s *0.8)) \r\
make \"r (:r * :s) \r\
make \"g (:g * :s) \r\
make \"b (:b * :s) \r\
] [ \
make \"s (:s * 0.9) \r\
make \"r (:r + ((99-:r) * :s)) \r\
make \"g (:g + ((99-:g) * :s)) \r\
make \"b (:b + ((99-:b) * :s)) \r\
] \
setpalette :i (list :r :g :b) \r\
end \r\
\
to rgb :myi :mycolors :myshade \r\
make \"myr first :mycolors \r\
make \"mycolors butfirst :mycolors \r\
make \"myg first :mycolors \r\
make \"mycolors butfirst :mycolors \r\
make \"myb first :mycolors \r\
make \"mycolors butfirst :mycolors \r\
tasetpalette :myi :myr :myg :myb :myshade \r\
output :mycolors \r\
end \r\
\
to processcolor :mycolors :myshade \r\
if emptyp :mycolors [stop] \r\
make \"i :i + 1 \r\
processcolor (rgb :i :mycolors :myshade) :myshade \r\
end \r\
\
to tasetshade :shade \r\
make \"myshade modulo :shade 200 \r\
if greaterp :myshade 99 [make \"myshade (199-:myshade)] \r\
make \"i 7 \r\
make \"mycolors :colors \r\
processcolor :mycolors :myshade \r\
end \r\
\
to tasetpencolor :c \r\
make \"color (modulo (round :c) 100) \r\
setpencolor :color + 8 \r\
end \r\
\
make \"colors [ \
99 0 0 99 5 0 99 10 0 99 15 0 99 20 0 \
99 25 0 99 30 0 99 35 0 99 40 0 99 45 0 \
99 50 0 99 55 0 99 60 0 99 65 0 99 70 0 \
99 75 0 99 80 0 99 85 0 99 90 0 99 95 0 \
99 99 0 90 99 0 80 99 0 70 99 0 60 99 0 \
50 99 0 40 99 0 30 99 0 20 99 0 10 99 0 \
0 99 0 0 99 5 0 99 10 0 99 15 0 99 20 \
0 99 25 0 99 30 0 99 35 0 99 40 0 99 45 \
0 99 50 0 99 55 0 99 60 0 99 65 0 99 70 \
0 99 75 0 99 80 0 99 85 0 99 90 0 99 95 \
0 99 99 0 95 99 0 90 99 0 85 99 0 80 99 \
0 75 99 0 70 99 0 65 99 0 60 99 0 55 99 \
0 50 99 0 45 99 0 40 99 0 35 99 0 30 99 \
0 25 99 0 20 99 0 15 99 0 10 99 0 5 99 \
0 0 99 5 0 99 10 0 99 15 0 99 20 0 99 \
25 0 99 30 0 99 35 0 99 40 0 99 45 0 99 \
50 0 99 55 0 99 60 0 99 65 0 99 70 0 99 \
75 0 99 80 0 99 85 0 99 90 0 99 95 0 99 \
99 0 99 99 0 90 99 0 80 99 0 70 99 0 60 \
99 0 50 99 0 40 99 0 30 99 0 20 99 0 10] \r\
make \"shade 50 \r\
tasetshade :shade \r"
bs = tw.just_blocks()
code = ""
stack_count = 0
show = 0
# These flags are used to trigger the prepending of additional procedures.
random = False
fillscreen = False
setcolor = False
setxy = False
setxy2 = False
pensize = False
setpensize = False
arc = False
heap = False
write = False
minus = False
division = False
image = False
"""
Walk through the code, substituting UCB Logo for Turtle Art primitives.
"""
for b in bs:
this_stack = ""
data = walk_stack(tw, b)
# We need to catch several special cases: stacks, random, etc.
stack = False
namedstack = False
namedbox = False
refstack = False
refbox = False
myvar = ""
for d in data:
if type(d) == type((1, 2)):
(d, b) = d
if type(d) is float:
if namedbox:
myvar += str(d)
myvar += " "
elif write:
this_stack += "labelsize "
this_stack += str(d)
write = False
else:
this_stack += str(d)
elif show == 2:
# Use title for Journal objects
if d[0:8] == '#smedia_':
try:
dsobject = datastore.get(d[8:])
this_stack += dsobject.metadata['title']
dsobject.destroy()
except:
this_stack += str(d)
else:
this_stack += str(d)
show = 0
else:
# Translate some Turtle Art primitives into UCB Logo
if namedstack:
this_stack += "to "
this_stack += d[2:].replace(" ","_")
this_stack += "\r"
stack = True
namedstack = False
elif namedbox:
if d[0:2] == "#s":
this_stack += "make \""
this_stack += d[2:].replace(" ","_")
this_stack += " "
this_stack += myvar
namedbox = False
myvar = ""
else:
myvar += d
elif refstack:
this_stack += d[2:].replace(" ","_")
this_stack += " "
refstack = False
elif refbox:
this_stack += ":"
this_stack += d[2:].replace(" ","_")
refbox = False
elif d == "stack":
refstack = True
elif d == "box":
refbox = True
elif d == "storeinbox":
namedbox = True
elif d == "storeinbox1":
this_stack += "make \"box1"
elif d == "box1":
this_stack += ":box1"
elif d == "storeinbox2":
this_stack += "make \"box2"
elif d == "box2":
this_stack += ":box2"
elif d == "shade":
this_stack += ":shade"
elif d == "setshade":
setcolor = True
this_stack += "tasetshade"
elif d == "color":
this_stack += "pencolor"
elif d == "nop":
this_stack += " "
elif d == "start":
this_stack += "to start\r"
stack = True
elif d == "nop1":
this_stack += "to stack1\r"
stack = True
elif d == "nop2":
this_stack += "to stack2\r"
stack = True
elif d == "nop3":
namedstack = True
elif d == "stopstack":
this_stack += "stop"
elif d == "clean":
this_stack += "clearscreen"
elif d == "setxy":
setxy = True
this_stack += "tasetxypenup"
elif d == "setxy2":
setxy2 = True
this_stack += "tasetxy"
elif d == "color":
this_stack += ":color"
elif d == "plus":
this_stack += "sum"
elif d == "setcolor":
setcolor = True
this_stack += "tasetpencolor"
elif d == "fillscreen":
fillscreen = True
setcolor = True
this_stack += "tasetbackground"
elif d == "random":
random = True
this_stack += "tarandom"
elif d == "pensize":
pensize = True
this_stack += "tapensize"
elif d == "setpensize":
setpensize = True
this_stack += "tasetpensize"
elif d == "arc":
arc = True
this_stack += "taarc"
elif d == "pop":
heap = True
this_stack += "tapop"
elif d == "push":
heap = True
this_stack += "tapush"
elif d == "heap":
heap = True
this_stack += "taprintheap"
elif d == "emptyheap":
heap = True
this_stack += "taclearheap"
elif d == "kbinput":
this_stack += "make \"keyboard readchar"
elif d == "keyboard":
this_stack += ":keyboard"
elif d == 'insertimage':
image = True
elif image:
# Skip this arg
image = 2
elif image == 2:
# Skip this arg
image = False
elif d[0:2] == "#s":
# output single characters as a string
if len(d[2:]):
this_stack += "\""
this_stack += d[2:]
# make a sentence out of everything else
else:
this_stack += "sentence "
this_stack += d[2:].replace("\s"," \"")
this_stack += "\r"
elif d == "write":
this_stack += "label"
write = True
elif d == 'show' or d == 'showaligned':
this_stack += "label"
show = 1
elif d == "minus2":
this_stack += "taminus"
minus = True
elif d == "division":
this_stack += "quotient"
elif d == "lpos":
this_stack += str(-tw.canvas.width/(tw.coord_scale*2))
elif d == "rpos":
this_stack += str(tw.canvas.width/(tw.coord_scale*2))
elif d == "bpos":
this_stack += str(-tw.canvas.height/(tw.coord_scale*2))
elif d == "tpos":
this_stack += str(tw.canvas.height/(tw.coord_scale*2))
elif d in IGNORE:
this_stack += " "
elif show == 1 and d[0:2] == "#s":
this_stack += d[2:]
# We don't handle depreciated 'template' blocks
else:
this_stack += d
this_stack += " "
if stack:
stack = False
# if it is not a stack, we need to add a "to ta#" label
elif len(data) > 0:
this_stack = "to ta" + str(stack_count) + "\r" + this_stack
stack_count += 1
if len(data) > 0:
code += this_stack
code += "\rend\r"
# We need to define some additional procedures.
if minus: # Logo minus only takes one argument.
code = "to taminus :y :x\routput sum :x minus :y\rend\r" + code
if random: # to avoid negative numbers
code = "to tarandom :min :max\r" + \
"output (random (:max - :min)) + :min\rend\r" + code
if fillscreen: # Set shade than background color
code = "to tasetbackground :color :shade\r" + \
"tasetshade :shade\rsetbackground :color\rend\r" + code
if setcolor: # Load the Turtle Art color palette.
code = color_processing + code
if setpensize: # Set int of pensize
code = "to tasetpensize :a\rsetpensize round :a\rend\r" + code
if pensize: # Return only the first argument.
code = "to tapensize\routput first round pensize\rend\r" + code
if setxy2: # Swap and round arguments
code = "to tasetxy :x :y\rsetxy :x :y\rend\r" + code
if setxy: # Swap and round arguments and add pen up/down
code = "to tasetxy :x :y\rpenup\rsetxy :x :y\rpendown\rend\r" + code
if arc: # Turtle Art 'arc' needs to be redefined.
c = (2 * math.pi)/360
code = "to taarc :a :r\rrepeat round :a [right 1 forward (" + \
str(c) + " * :r)]\rend\r" + code
if heap: # Add psuedo 'push' and 'pop'
code = "to tapush :foo\rmake \"taheap fput :foo :taheap\rend\r" + \
"to tapop\rif emptyp :taheap [stop]\rmake \"tmp first :taheap\r" + \
"make \"taheap butfirst :taheap\routput :tmp\rend\r" + \
"to taclearheap\rmake \"taheap []\rend\r" + \
"to taprintheap \rprint :taheap\rend\r" + \
"make \"taheap []\r" + code
code = "window\r" + code
return code
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