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Diffstat (limited to 'pysamples/dotted_line.py')
| -rw-r--r-- | pysamples/dotted_line.py | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/pysamples/dotted_line.py b/pysamples/dotted_line.py deleted file mode 100644 index febd409..0000000 --- a/pysamples/dotted_line.py +++ /dev/null @@ -1,133 +0,0 @@ -#Copyright (c) 2009-11, Walter Bender - -# 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 '# ' in the Python code. Take care to preserve -# the proper indentations. -# -# -# NOTES: -# -# Turtle Art is created in object oriented Python code. This is based -# around the definition of classes and the creation of object(s) which -# are instance(s) of that class. These objects then have properties and -# methods which are defined by their class. -# -# See http://docs.python.org/tutorial/classes.html for a description of -# classes in Python. -# -# Class Defined in Instance Created in -# TurtleArtWindow tawindow.py tw TurtleArtActivity.py -# LogoCode talogo.py lc tawindow.py -# TurtleGraphics tacanvas.py canvas tawindow.py -# Turtles, Turtle taturtle.py turtles tawindow.py, -# tacanvas.py -# Blocks, Block tablock.py block_list tawindow.py -# -# -# Class TurtleArtWindow -- useful properties and methods (from within -# tamyblock.py, tw is the class instance) -# -# Methods and data attributes Example -# set_fullscreen(self) tw.set_fullscreen() -# Note: Hides the Sugar toolbar -# set_cartesian(self, flag) tw.set_cartesian(True) -# Note: True will make the overlay visible; -# False will make it invisible -# set_polar(self, flag) tw.set_polar(True) -# Note: True will make the overlay visible; -# False will make it invisible -# hideshow_button(self, flag) tw.hideshow_button() -# Note: Toggles visibility of blocks and palettes -# self.active_turtle tw.active_turtle -# Note: The active turtle instance -# -# -# Class TurtleGraphics -- useful properties and methods (from within -# tamyblock.py, tw.canvas is the class instance) -# -# Methods and data attributes Example -# clearscreen(self) tw.canvas.clearscreen() -# Note: Clears the screen and resets all turtle and -# pen attributes to default values -# setpen(self, flag) tw.canvas.setpen(True) -# Note: True will set the pen "down", enabling drawing; -# False will set the pen "up" -# forward(self, n) tw.canvas.forward(100) -# Note: Move the turtle forward 100 units -# arc(self, a, r) tw.canvas.arc(120, 50) -# Note: Move the turtle along an arc of 120 degrees -# (clockwise) and radius of 50 units -# setheading(self, a) tw.canvas.setheading(180) -# Note: Set the turtle heading to 180 -# (towards the bottom of the screen) -# self.heading tw.canvas.heading -# Note: The current heading -# setpensize(self, n) tw.canvas.setpensize(25) -# Note: Set the turtle pensize to 25 units -# self.pensize tw.canvas.pensize -# Note: The current pensize -# setcolor(self, c) tw.canvas.color(70) -# Note: Set the pen color to 70 (blue) -# self.color tw.canvas.color -# Note: The current pen color -# setshade(self, s) tw.canvas.shade(50) -# Note: Set the pen shade to 50 -# self.shade tw.canvas.shade -# Note: The current pen shade -# fillscreen(self, c, s) tw.canvas.fillscreen(70, 90) -# Note: Fill the screen with color 70, shade 90 (light blue) -# setxy(self, x, y) tw.canvas.setxy(100,100) -# Note: Move the turtle to position (100, 100) -# self.xcor tw.canvas.xcor -# Note: The current x coordinate of the turtle -# (scaled to current units) -# self.ycor tw.canvas.ycor -# Note: The current y coordinate of the turtle -# (scaled to current units) -# self.set_turtle(name) tw.canvas.set_turtle(1) -# Note: Set the current turtle to turtle '1' -# -# -# Other useful Python functions -# Module Example -# from math import pow pow(2,3) returns 2 to the 3rd power -# Note: See http://docs.python.org/library/math.html -# from math import sin, pi sin(45*pi/180) returns sin of 45 (0.707) -# Note: See http://docs.python.org/library/math.html -# from time import localtime localtime().tm_hour returns the current hour -# Note: See http://docs.python.org/library/time.html -# tw.lc.heap.append(data) adds data to the heap -# Note: See http://docs.python.org/tutorial/datastructures.html -# data = tw.lc.heap.pop(-1) pops data off the heap -# Note: See http://docs.python.org/tutorial/datastructures.html -# - -# Usage: Import this code into a Python (user-definable) block; when -# this code is run, the turtle will draw a dotted line of the length -# of the numeric argument block docked to the Python block. - - -def myblock(tw, line_length): - ''' Draw a dotted line of length line_length. ''' - - try: # make sure line_length is a number - line_length = float(line_length) - except ValueError: - return - if tw.canvas.pendown: - dist = 0 - while dist + tw.canvas.pensize < line_length: # repeat drawing dots - tw.canvas.setpen(True) - tw.canvas.forward(1) - tw.canvas.setpen(False) - tw.canvas.forward((tw.canvas.pensize * 2) - 1) - dist += (tw.canvas.pensize * 2) - # make sure we have moved exactly line_length - tw.canvas.forward(line_length - dist) - tw.canvas.setpen(True) - else: - tw.canvas.forward(line_length) - return |