p3D

A cross-platform, fully-featured 3D engine, made in Python.

Getting Started

To install the package, run this command in the directory of your project's code.

pip install python3D

You can now start writing your first 3D script. Paste the following code to get started.

import python3D as p3D


def setup():
    """Put your setup code here, to run once."""
    global models


def loop(elapsed_time):
    """Put your main code here, to run repeatedly."""


p3D.run(setup, loop)

The setup and loop functions are not required parameters of p3D.run(), but all project functions are added in them.

You're ready to start developing in 3D!

Documentation

Models

To add an OBJ model, you can use the models registry in your setup() function.

def setup():
    """Put your setup code here, to run once."""
    global models
    models['model'] = p3D.Model('model.obj', 'optional_texture.png')

To modify the transformational properties of your models, you can use the change_position() property.

models['model'].change_position(x=1)

When in the loop() function, you must use p3D.models['model'] instead.

x, y, z - left/right, up/down, and forward/backward displacements, respectively

rot_x, rot_y, rot_z - rotation on x, y, and z axes, respectively

scale - percentage-based size change of model. Support for axis-based scaling is not supported at this time.

reset - takes inputted values as the new position of the model when set to 1; 0 by default (adds new values to current values).

Preferences

p3D.preferences can be used to modify functionality by changing an attribute.

p3D.preferences['attribute'] = value

The following attributes are available:

• 'title' - string used for default loading screen, window caption, and system logs. 'p3D' by default.
• 'camera' - list [x, y, z, h, v] of starting camera attributes where x, y, z is the position of the camera and h, v is the starting horizontal and vertical camera angles. [0, 0, 0, 0.01, 0.01] by default.
  • The amount of decimal places in the starting horizontal and vertical camera angles is the amount of decimal places possible in simulation. For example, having 0, 0 as your h, v values would make the camera rotate in integer values only, reducing freedom.
• 'font' - string file path to font file of choice. 'font.ttf' by default.
• 'skybox' - string file path to skybox image of choice; replaces black environment. None by default.
• 'loading' - function taking parameters surface and title, regardless of whether they are used. Custom loading screens must be drawn on with pygame functions.

Logs

The p3D.log() function takes in three parameters (prefix, message, data=None) and logs in the command line in color, if supported.

prefix - determines type of message sent. Possible values include:

• 'warning': yellow, user warnings
• 'error': red, both computational and logical errors
• 'log': blue, general messages, runtime checkpoints, and data logging

message - message body to be sent; should be one line.

data - list, where each item appears after the message body on a separate line.

Proper Usage

When using the p3D.log() function, following proper usage guides can ensure that in-built engine logs match the style of your project's logs.

• Use warnings when something atypical for your project (e.g., a user hasn't claimed their account and information may be lost) occurs, NOT when an error is anticipated.
• Errors should be used for issues specific to your project (e.g., an item is too expensive for the player to buy).
  • If a runtime error occurs, FATAL. must precede your message, and for specific errors, you must include relevant information (e.g. filenames) in the data list.
  • If the error is not specific (i.e. general Exception), then after relevant information, include f'Error {str(e)} in the data list.
  • Unhelpful error messages often don't include a fix or course of action.
• Make sure to log all important stages of app progression (e.g, a user signs up).

Other

Issue Reporting

To report issues, please refer to our GitHub Issues page.

Contacts

For questions concerning the contents of this repository, please contact aaravhdave [at] gmail [dot] com.