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Activities/Turtle Art (view source)
Revision as of 16:09, 26 February 2010
, 16:09, 26 February 2010→myblock.py
The following feature is only available in versions 44+ of Turtle Art.
The following feature is only available in versions 44+ of Turtle Art.
And a block that can be programmed by the Pippy interface:
And a block that can be programmed by the Pippy interface:
Examples:
Examples:
def myblock(lc, x):
###########################################################################
#
# Draw a dotted line of length x.
#
###########################################################################
try: # make sure x is a number
x = float(x)
except ValueError:
return
if lc.tw.canvas.pendown:
dist = 0
while dist+lc.tw.canvas.pensize < x: # repeat drawing dots
lc.tw.canvas.setpen(True)
lc.tw.canvas.forward(1)
lc.tw.canvas.setpen(False)
lc.tw.canvas.forward((lc.tw.canvas.pensize*2)-1)
dist += (lc.tw.canvas.pensize*2)
lc.tw.canvas.forward(x-dist) # make sure we have moved exactly x
lc.tw.canvas.setpen(True)
else:
lc.tw.canvas.forward(x)
return
[[Image:TA-dotted-line.png]]
You can pass a list of up to three arguments to tamyblock.py as in this example that converts the input to an rgb value.
def myblock(lc, x):
def myblock(lc, x):
return
return
[[Image:TA-rgb.png]]
def myblock(lc, x):
def myblock(lc, x):