pygame-chart 1.0.0
A package for drawing charts in pygame apps
Requires Python: >=3.9.10

# pygameChart

## Introduction

Welcome to pygameChart! This package provides a simple and flexible way to create charts and plots within a pygame application. With pygameChart, you can easily visualize data and display in your applications in an appealing way. Its structure to define figure parameters and charts is similar to matplotlib for ease of use.
- Support for line plots, bar charts, and scatter plots (more on the way)
- Customization options for chart appearanve and behavior
- Easy integration within pygame event loop, therefore ability to change content during the game and/or app
I hope pygameChart will be useful addition to your pyhame projects. Continue reading for installation and use of the package

## Installation

Please consider project page on Github, https://github.com/enessafak/pygameChart.
The module requires python>=3.9.10 and pygame>=2.1.2

## Quickstart

pygameChart provides a simple use (similar to matplotlib) to create figure, set properties (like title, label names, chart limits etc.) and add several charts. In this phase it supports line plot, scatter plot and bar charts. Also in this phase, it accepts x and y axis data as two separate lists. I will add support for accepting different datatypes like dictionary numpy arrays or pandas series and dataframes.

Basic use of the package creates following result.

### Basic figure with line chart

```python
import pygame, sys
import pygame_chart as pyc

# pygame app for figure to run
pygame.init()
screen = pygame.display.set_mode((800,600))

# Figure instance on screen with position and size
figure = pyc.Figure(screen, 50, 50, 700, 500)

while True:
    events = pygame.event.get()
    for event in events:
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

    # add a line chart. First argument "name" should be unique for every chart
    figure.line('Chart1', [1,2,3,4,6,20,24],[3,5,7,2,7,9,1])
    # draw figure with specified properties
    figure.draw()    
    pygame.display.update()
```
<img src="https://user-images.githubusercontent.com/57540559/210799934-c8a39935-b797-4947-8579-8c84ce25d882.jpeg" alt="Basic figure with line chart" height=500>



### Figure with several charts and properties

```python
import pygame, sys
import pygame_chart as pyc

# pygame app for figure to run
pygame.init()
screen = pygame.display.set_mode((800,600))

# Figure instance on screen with position and size
figure = pyc.Figure(screen, 50, 50, 700, 500)

while True:
    events = pygame.event.get()
    for event in events:
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

    # Add chart title with a title
    figure.add_title('pygameChart Example')
    # Add legend and gridlimes
    figure.add_legend()
    figure.add_gridlines()
    # add a line chart. First argument "name" should be unique for every chart
    figure.line('LineChart', [1,2,3,4,6,20,24],[3,5,7,2,7,9,1])
    figure.bar('BarChart', [1,2,3,4,10,18,24],[4,3,9,2,7,12,5])
    figure.scatter('ScatterChart', [-4,3,6,8,12,16,20],[2,4,12,5,6,3,8])
    # draw figure with specified properties
    figure.draw()    
    pygame.display.update()
```

<img src="https://user-images.githubusercontent.com/57540559/210801090-0e6781e8-12ab-4dcb-940d-5c14a862f3ac.jpeg" alt="Figure with properties" height=500>


## Documentation

This documentation provides classes in pygameChart with relative methods and attributes. Default values for initiations are given as global variables and can be modified in settings.py.
Only class the end user should use is Figure class. For the rest, only relevant method or attributes will be mentioned.

### Figure class

```python
pygameChart.Figure(screen, x, y, width, height, bg_color=BG_COLOR)
```

#### Parameters
| Parameter | Type              | Explanation                           |
| --------- | ----------------- | -------------------------------       |
| screen    | pygame.display    | Main display for figure to be drawn   |
| x         | number            | Position of figure at x axis          |
| y         | number            | Position of figure at y axis          |
| width     | number            | Width of the figure                   |
| height    | number            | Height of the figure                  |
|bg_color   | RGB tuple (r,g,b) | Background color of the figure        |

#### Methods

- set_xlim(xlim) : Sets xmin and xmax for all charts. Drawings out of these limits are unvisible
    - *xlim : tuple* : (xmin, xmax)
- set_ylim(ylim) : Sets ymin and ymax for all charts. Drawings out of these limits are unvisible \
    - *ylim : tuple* : (ymin, ymax)
- add_title(title) : Adds chart title to the top of the figure
    - *title : string* : chart title
- add_legend() : Adds legend to the bottom of the figure 
- add_yaxis_label(label) : Adds label for y-axis 
    - *label : string* : y-axis label
- add_xaxis_label(label) : Adds label for x-axis 
    - *label : string* : x-axis label
- add_gridlines() : Adds gridlines to the figure
- line(name, xdata, ydata, color=None, line_width=2) : Adds line chart to the figure
    - *name : string* : Name of the chart. Name of each chart should be unique to be drawn.
                        Otherwise, former chart data is updated with the latter
    - *xdata : list* : x-axis data. List must be all numbers or all strings
    - *ydata : list* : y-axis data. List must be all numbers
    - *color : tuple* : RGB tuple (r,g,b). Default value chooses the next unused 
                        color from settings.py
    - *line_width : int* : Width of the line
- bar(name, xdata, ydata, color=None, bar_width=None) : Adds bar chart to the figure
    - *name : string* : Name of the chart. Name of each chart should be unique to be drawn.
                        Otherwise, former chart data is updated with the latter
    - *xdata : list* : x-axis data. List must be all numbers or all strings
    - *ydata : list* : y-axis data. List must be all numbers
    - *color : tuple* : RGB tuple (r,g,b). Default value chooses the next unused 
                        color from settings.py
    - *bar_width : int* : Width of the bar. If none, bar width is calculated according to 
                        figure size and x data range
- scatter(name, xdata, ydata, color=None, radius=3): Adds scatter chart to the figure
    - *name : string* : Name of the chart. Name of each chart should be unique to be drawn.
                        Otherwise, former chart data is updated with the latter
    - *xdata : list* : x-axis data. List must be all numbers or all strings
    - *ydata : list* : y-axis data. List must be all numbers
    - *color : tuple* : RGB tuple (r,g,b). Default value chooses the next unused 
                        color from settings.py
    - *radius : int* : Radius of the circle
- draw() : Draws the figure with set properties and charts. Final method to draw and show the figure on screen

### Area class

Base object for figure areas: title, legend, x-y axis labels, x-y axis ticks and chart area
```python
pygameChart.Area(figure)
```
#### Attributes
| Attribute | Type                  | Explanation                                   |
| --------- | -----------------     | -------------------------------               |
| figure    | pygame.Chart.Figure   | Main Figure object                            |
| x         | number                | Position of area at x axis (rel. to figure)   |
| y         | number                | Position of area at y axis (rel. to figure)   |
| width     | number                | Width of the area                             |
| height    | number                | Height of the area                            |
| innerx    | number                | Inner x position for padding                  |
| innery    | number                | Inner x position for padding                  |
| innerwidth    | number            | Inner width for padding                       |
| innerheight   | number            | Inner height for padding                      |
| show      | boolean               | draw condition for the area                   |

#### Methods
- draw_area() : Draws the area on figure background, with figure.bg_color fill
- draw_area_border(): Draws the area on figure background, with border, without fill

### Title(Area) Class

Class for adding and writing chart title

### Legend(Area) Class

Class for calculating legend position, content and writing

### yAxisLabel(Area) Class

Class for adding and writing y-axis label

### xAxisLabel(Area) Class

Class for adding and writing x-axis label

### yAxisTick(Area) Class

Class for calculating x-tick position, content and writing

#### Attributes
| Attribute | Type      | Explanation                                   |
| --------- | --------  | -------------------------------               |
| ymin      | number    | Min value for y-ticks. Might be different than chart data. Overwritten by Figure.ylim|
| ymax      | number    | Min value for y-ticks. Might be different than chart data. Overwritten by Figure.ylim|

### xAxisTick(Area) Class

Class for calculating y-tick position, content and writing

#### Attributes
| Attribute | Type      | Explanation                                   |
| --------- | --------  | -------------------------------               |
| xmin      | number    | Min value for xx-ticks. Might be different than chart data. Overwritten by Figure.xlim|
| xmax      | number    | Min value for x-ticks. Might be different than chart data. Overwritten by Figure.xlim|

### ChartArea(Area) Class

Class for calculating chart positioning and drawing

#### Attributes
| Attribute     | Type      | Explanation                                   |
| ---------     | --------  | -------------------------------               |
| charts        | list      | List of chart objects added to the figure     |
| chart_names   | list      | List of chart names added to the figure       |
| chart_margin  | int       | Padding for left and right border             |
| xdata_type    | str       | Indicates the type of xdata (number or string). If figure.xlim is set, it becomes number. Otherwise, it is determined by the first chart to be added. Charts with other type of xdata cannot be added later |
| gridlines     | boolean   | If gridlines will be added to the figure      |

### ChartType Class

Base class for all chart types

### LineChart(ChartType) Class

Class for keeping properties of line chart. Drawing is done within Figure.ChartArea

#### Parameters
| Parameter     | Type              | Explanation                                           |
| ---------     | ----------------- | -------------------------------                       |
| name          | string            | Name of the chart                                     |
| xdata         | list              | x-axis data. List must be all numbers or all strings  |
| ydata         | list              | y-axis data. List must be all numbers                 |
| color         | tuple             | RGB tuple (r,g,b). Default value chooses the next unused color from settings.py |
| line_width    | int               | Width of the line                                     |

### BarChart(ChartType) Class

Class for keeping properties of bar chart. Drawing is done within Figure.ChartArea

#### Parameters
| Parameter     | Type              | Explanation                                           |
| ---------     | ----------------- | -------------------------------                       |
| name          | string            | Name of the chart                                     |
| xdata         | list              | x-axis data. List must be all numbers or all strings  |
| ydata         | list              | y-axis data. List must be all numbers                 |
| color         | tuple             | RGB tuple (r,g,b). Default value chooses the next unused color from settings.py |
| bar_width     | int               | Width of the bar. If none, bar width is calculated according to figure size and x data range |

### ScatterChart(ChartType) Class

Class for keeping properties of scatter chart. Drawing is done within Figure.ChartArea

#### Parameters
| Parameter     | Type              | Explanation                                           |
| ---------     | ----------------- | -------------------------------                       |
| name          | string            | Name of the chart                                     |
| xdata         | list              | x-axis data. List must be all numbers or all strings  |
| ydata         | list              | y-axis data. List must be all numbers                 |
| color         | tuple             | RGB tuple (r,g,b). Default value chooses the next unused color from settings.py |
| radius        | int               | Radius of the circle |


## License

The MIT License (MIT)

Copyright (c) 2023 

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