#Copyright (c) 2009, 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. # # This procedure is invoked when the user-definable block on the "extras" # palette is selected. Some examples of how to use this block are included # below. Try uncommenting an example or write your own Python code. # # To uncomment code, remove the """s before and after the block # def myblock(lc,x): # draw a dotted line of length x # make sure x is a number if type(x) != int and type(x) != float: return dist = 0 # save current turtle pen state pen = lc.tw.turtle.pendown # repeat drawing dots while dist+lc.tw.turtle.pensize < x: setpen(lc.tw.turtle, True) forward(lc.tw.turtle, 1) setpen(lc.tw.turtle, False) forward(lc.tw.turtle, (lc.tw.turtle.pensize*2)-1) dist += (lc.tw.turtle.pensize*2) # make sure we have moved exactly x forward(lc.tw.turtle, x-dist) # restore pen state setpen(lc.tw.turtle, pen) # push an uppercase version of a string onto the heap # if type(x) != str: # X = str(x).upper() # else: # X = x.upper() # push result onto heap (use the pop block to use the new string) # lc.heap.append(X) # push hours, minutes, seconds onto the heap # use three pop blocks to retrieve the values # remember: the heap is a FILO (first in, last out) # the first value you will pop will be seconds # lc.heap.append(localtime().tm_hour) # lc.heap.append(localtime().tm_min) # lc.heap.append(localtime().tm_sec) # add a third dimension (gray) to the color model # calculate the value (brightness) of the current color # val = 0.3 * lc.tw.rgb[0] + 0.6 * lc.tw.rgb[1] + 0.1 * lc.tw.rgb[2] # make sure gray is in range from 0 to 100 # if x != 100: # x = int(x)%100 # mix in gray # r = int((val*(100-x) + lc.tw.rgb[0]*x)/100) # g = int((val*(100-x) + lc.tw.rgb[1]*x)/100) # b = int((val*(100-x) + lc.tw.rgb[2]*x)/100) # reallocate current color # lc.tw.fgcolor = lc.tw.cm.alloc_color(r<<8,g<<8,b<<8) return