Parabel als Funktion, aufrufbar, ohne Wiedergabe

parabelfunc.py

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+#!/usr/bin/python3
+# -*- coding: utf-8 -*-
+
+
+import os, sys, termios, tty, time, random
+from math import sin, cos, tan, sqrt
+from time import sleep
+
+
+def berechneflugbahn(cow, xmin, xmax, ymin, ymax, startwinkel, startgeschwindigkeit, starthoehe):
+    x = 0
+    y = x**2
+    # in scala the resulting coordinates will be returned
+    scala = []
+    erde = 9.81
+    mond = 1.6
+    jupiter = 24
+    gravitation = erde
+    starthoehe = 0
+    startwinkel = 26 * deg2rad
+    startgeschwindigkeit = 36
+    loeschen = "y"
+
+    # Calculate time of flight
+    flugdauer = startgeschwindigkeit * sin(startwinkel) / gravitation
+    schlafdauer = flugdauer / xmax
+    # Calculate maximum height
+    hoehe = 0.5 * gravitation * flugdauer**2 + starthoehe
+
+    # calculate length of flight
+    wurfweite = (
+        startgeschwindigkeit
+        * cos(startwinkel)
+        * (startgeschwindigkeit * sin(startwinkel) + sqrt(startgeschwindigkeit**2 * sin(startwinkel) ** 2 + 2 * gravitation * starthoehe))
+    ) / gravitation
+
+    # cowlength is 2, if cow is an UTF8-Icon, otherwise 1
+    for x in range(xmin, xsteps - 1, cowlength):
+        # the formula, which generates the y position for the corresponding x, shamelessly ripped from some schoolbook and modified.
+        yold = y
+        y = (-(gravitation / (2 * startgeschwindigkeit**2 * cos(startwinkel) ** 2)) * x**2) + (tan(startwinkel) * x + starthoehe)
+
+        # Ensure, that nothing has to be drawn outside the viewport
+        if y < ymax and y > ymin:
+            # Stash awa the coordinates into scala, which will be returned
+            scala += [x, int(y * 10 + 5) / 10]
+        else:
+            scala += [x, 0]
+
+        xold = x
+
+    return scala
+
+
+# berechneflugbahn(cow, xmin, xmax, ymin, ymax, startwinkel, startgeschwindigkeit, starthoehe):
+
+cow = "🦝"
+cowlength = len(cow)
+xmax = 157
+ymax = 38
+ymin = 0
+xmin = 0
+xold = xmin
+# pi is not defined by default
+pi = 3.1416
+deg2rad = pi / 180
+xsteps = xmax
+wurfweite = 0
+startwinkel = (34 / deg2rad,)
+startgeschwindigkeit = 23
+starthoehe = 0
+print(berechneflugbahn(cow, xmin, xmax, ymin, ymax, startwinkel, startgeschwindigkeit, starthoehe))