Illuminated3D This project participates in the Nasa Space Apps Challenge 2021.

Overview

NASA-Space-Apps-Challenge-2021

Illuminated3D This project participates in the Nasa Space Apps Challenge 2021.

Documentation of the Illuminat3d App

Version 1.0

The main scope of this application is to plot the light curve of an asteroid for certain values of the input variables. The project consists of two .py files (.py and .py).

GUIFinal.py file

This is the file that we create the User Interface (UI) of our application. It have a space that the user load his 3D model (.stl file format). Then the user must fill in every enrty of the variables in the right form and finally push the Run Program button to see the light curve plot in the corresponding window. The User Interface except all the widgets (Button, Label, Entry, Images) has and 3 functions:

  • browseFiles(): in this function we set the directory that the application can search to find the user's 3D model. When a file is selected then the label of the file explorer change text to specify the path of the file.
  • popup_window_1(): function that triggered when the info button is pressed and pops out an information message.
  • checkInputs(): in this function we check the validity of the input variables and then create an Illuminated object to start running the main program.

Illuminated_Class_Git.py file

In this file we create a class Illuminated to control the core of our program and to plot the light curves of the input 3D models. This class has several functions to produce the expected output.

  • __ init__(self, filename, initRot, rotAxis, frames, albedo, omega): is the contructor of the class which assigns the proper values to the class variables. It recieves as inputs the filename of the 3D model(filename), the initial rotation axis and angle (initRot), the rotational axis (rotAxis), the number of frames (frames), the albedo (albedo) and the omega angle(omega).
  • checkTheModel(self): this function check if the 3D model that the user inserted is valid(close object). Return boolean value True or False.
  • computeIntersectionsAreas(self, multi): recieves a Multipolygon object and returns its total area.
  • multColumns(self, col1, col2): recieves two arrays and produce a new one of the same length. Each element of this array is the multiplication of the two initial arrays' corresponding elements (i.e. new_col[5] = col1[5]*col2[5])
  • sortCoords(self, arr, ind): this is an extra function which sorts the rows of the 2D arr array under the 1D index array.
  • sortDist(self, arr, ind): this is an extra function which sorts the values of the 1D arr array under the 1D index array.
  • desortDist(self, arr, ind): with this function we de-sort the distances array back to its initial structure.
  • computeCoefs(self, coords, dist, dots): compute the coefficients array depending on the coordinates, distances and dots arrays. By taking one triangle at a time we compute the area of each triangle that is seen by the viewer.
  • n_vec(self, tha, thb, thc): return a normalized vector as the cosines of the given angles tha, thb, thc. Each input is the angle that this vector forms with the corresponding axix (x, y, z).
  • v_surf(self, cube ,n_v): return the viewing surface when looking in the n_v direction (either as the source or as the viewer).
  • execution(self): in this function we calibrate the model with its rotation and the position of the light and the viewer and we plot the asteroid's light curve. The number of the plot's points is implied by the number of frames.

Installation

Use the package manager pip to install the necessary libraries.

pip install python-math
pip install numpy-stl
pip install matplotlib
pip install tk
pip install shapely

Execution

After you download the project in your computer, you must move to the directory that the python files are and run the command below.

python GUIFinal.py

Members

  1. Doli Maria
  2. Eleftheriadis Emmanouil
  3. Komitis Dimitrios
  4. Liodis Ioannis
  5. Noula Konstantina
  6. Rodiou Eirini
Owner
Eleftheriadis Emmanouil
Eleftheriadis Emmanouil
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