phyengine 1.3.0.2

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

You can use ususal import

import phyengine

phyengine.MathEngine

Vectors

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

phyengine.MathEngine.Vector(<coordx>, <coordy>)

For example:

first = phyengine.MathEngine.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 = phyengine.MathEngine.Vector(2, 3)
b = phyengine.MathEngine.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 = phyengine.MathEngine.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 = phyengine.MathEngine.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 = phyengine.MathEngine.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 = phyengine.MathEngine.Vector(3, 4)

e = a.unit
print(e)

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

phyengine.InputManager

InputManager can help you get data from keyboard to control your simulation. To init Input, you need to run this:

phyengine.InputManager.init(*args)

where *args - list of buttons, that you want to record. For example:

input_ = phyengine.InputManager.init("space", "q", "w")

Operations with input

Getting if button is held

input_.held(key)

Will return true while buttons with name "key" is pressed

Getting if button was pressed

input_.pressed(key)

Will return true only when button with name "key" was pressed first time