phyengine 1.2.5.5

Pyhton library for simple physics modelation

About

This library can help you program some simple kinematics processes and get some important (maybe) data from it

Getting saterted

Installing

To install phyengine, run following command in command prompt:

pip install phyengine

Importing

!!!IMPORTANT!!! You need to use a bit special import to use all features::

from phyengine import math_engine
from phyengine import main_engine

Basic acknowledge

Vectors

Phyengine can work with 2d vectors. General syntax to create vector object is

math_engine.Vector(<coordx>, <coordy>)

For example:

first = math_engine.Vector(2, 3)

To get coord of vector, try this:

print(first.x)
print(first.y)

# Output:
# 2
# 3

Also, you can print vector:

print(first)

# Output:
# Vector object with coords (2, 3)

Operations with vectors

Addition/Substracting

a = math_engine.Vector(2, 3)
b = math_engine.Vector(3, -7)

res1 = a + b
res2 = a - b
print(res1)
print(res2)

# Output:
# Vector object with coords (5, -4)
# Vector object with coords (-1, 10)

Multiplying/Dividing vector by int/float

a = math_engine.Vector(5, 6)
b = 1.2
c = 2

res1 = a * b
res2 = a / c
print(res1)
print(res2)

# Output:
# Vector object with coords (6, 7.2)
# Vector object with coords (2.5, 3)

Iterating by vector

Iterating by vector is equal to iterating by tuple (vector.x, vector.y)

a = math_engine.Vector(5, 6)

for i in a:
    print(i)

# Output:
# 5
# 6

Getting absolute value of vector

Absolute value of vector is calculated as sqrt(vector.x^2 + vector.y^2)

a = math_engine.Vector(3, 4)

print(abs(a))

# Output:
# 5

Getting unit vector

Unit vector is a vector, which absolute value is 1 and has the same direction as given

a = math_engine.Vector(3, 4)

e = a.unit
print(e)

# Output:
# Vector object with coords (0.6, 0.8)

Creating window

So, let`s create our first window! General syntax to do it is:

window = main_engine.BasicWindow(<width>, <height>, <ping>, <scale>)

where:

width: integer - width of window (pixels)
height: integer - height of window (pixels)
ping: integer (30 by default) - time in ms between screen updating. The more ping is, the rarelier screen will be updated but the more stable it will be
scale: float (1 by default) - number that will show how many pixels are in one meter (scale = 10 mean that every 10 pixels program will understand as 1 imaginary meter)

For example:

window = main_engine.BasicWindow(600, 600, 5, 100)

But to show window you need to add next command:

window = main_engine.BasicWindow(600, 600, 5, 100)
window.start()