From 84055e4d0cb58f94ac8e6be28885c7d51d13ef3a Mon Sep 17 00:00:00 2001
From: Hong-Phuc Bui <hong-phuc.bui@htwsaar.de>
Date: Mon, 13 May 2024 02:54:33 +0200
Subject: [PATCH] Example for functions
---
python-grundlage/Lissajous-turtle.py | 35 +++++++++++++++++++++++++----------
1 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/python-grundlage/Lissajous-turtle.py b/python-grundlage/Lissajous-turtle.py
index 62a1d4a..9f44134 100644
--- a/python-grundlage/Lissajous-turtle.py
+++ b/python-grundlage/Lissajous-turtle.py
@@ -1,19 +1,19 @@
#! /usr/bin/env python
-
+import sys
from typing import Final
from math import pi, cos
import turtle
-amplitude: tuple[float, float] = (1, 1)
+amplitude: Final[tuple[float, float]] = (1, 1)
# frequent
-omega: tuple[float, float] = (-1, -2)
+omega: Final[tuple[float, float]] = (3, 11)
# phase
-phi: tuple[float, float] = (pi/2, 3*pi/4)
+phi: Final[tuple[float, float]] = (pi/2, 3*pi/4)
# Diskretisieren
N: Final[int] = 360
-step = (2*pi) / N
-T = [k * step for k in range(N)]
+step: Final = (2*pi) / N
+T: Final = [k * step for k in range(N)]
points = [(
amplitude[0] * cos(omega[0]*t + phi[0]),
amplitude[1] * cos(omega[1]*t + phi[1])
@@ -22,18 +22,33 @@
# Plot with turtle
(canvaswidth, canvasheight) = turtle.screensize()
-point_size = 3
+point_size = 1.5
+turtle.setup(width=canvaswidth + 5*point_size, height=canvaswidth + 5*point_size)
+
# scale up
x_factor = (canvaswidth / 2) / amplitude[0]
y_factor = (canvasheight / 2) / amplitude[1]
print(x_factor, y_factor)
# as fast as possible
turtle.speed(0)
-turtle.pendown()
+turtle.penup()
+turtle.pensize(point_size)
for p in points:
x = x_factor * p[0]
y = y_factor * p[1]
- turtle.teleport(x, y)
- turtle.dot(point_size)
+ #turtle.teleport(x, y)
+ #turtle.dot(point_size)
+ turtle.goto(x, y)
+ turtle.pendown()
+p0 = points[0]
+turtle.goto(x_factor * p0[0], y_factor * p0[1])
+
+write_to_file = False
+if write_to_file:
+ output_dir = "../../2024/python-output"
+ image_filename = f"{output_dir}/{sys.argv[0].replace('.py','.eps')}"
+ print(f"save file to {image_filename}")
+ canvas_screen = turtle.getscreen().getcanvas()
+ canvas_screen.postscript(file=image_filename)
turtle.done()
--
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