How to resolve the algorithm Joystick position step by step in the Mathematica/Wolfram Language programming language
How to resolve the algorithm Joystick position step by step in the Mathematica/Wolfram Language programming language
Table of Contents
Problem Statement
The task is to determine the joystick position and represent this on the display via a crosshair. For a centred joystick, the crosshair should appear in the centre of the screen. If the joystick is pushed left or right, then the cross hair should move left or right according to the extent that the joystick is pushed. If the joystick is pushed forward or pulled back, then the crosshair should move up or down according to the extent that that joystick is pushed or pulled. The edges of the display represent maximum extents for joystick movement. For example, a joystick pushed fully forward would raise the crosshair to the top centre of the screen. A joystick pulled backwards and to the right would move the crosshair to the bottom right of the screen (except for a small area reserved to show joystick status). Implementations can use a graphical display method to produce the crosshair, or alternatively represent the crosshair using a plus symbol on a terminal, and move the plus symbol position according to the joystick. The bottom part of the display can hide or show an alphanumeric sequence to represent the buttons pressed. For example, if pushbuttons 1,4 and 10 are depressed, we could display "1 4 A". The implemented code should continue to redraw the crosshair according to the joystick position and show the current pushbutton statuses until the task is terminated. Digital joysticks that produce no extent data, should have their position indicated as full extent movement of the crosshair. For the purpose of this task, we assume that the joystick is calibrated and that the first joystick is being used. The task implementer could at their option provide a solution that includes a joystick selection facility, enabling the user to choose which joystick is to be used for this task.
Let's start with the solution:
Step by Step solution about How to resolve the algorithm Joystick position step by step in the Mathematica/Wolfram Language programming language
The provided Wolfram code creates a 2D slider that allows for dynamically controlling two numerical values, X and Y, and displaying their values as a controller state. Here's a detailed explanation of the code:
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Slider2D: This function creates a 2D slider control. It takes various options to customize the appearance and behavior of the slider, but in this case, only one option is specified:Dynamic[ControllerState[{"X", "Y"}]]: This option specifies the dynamic value that the slider will control.ControllerState` is a built-in function that creates a dynamic value that represents the current state of a controller. In this case, it creates a controller state with two subcontroller states named "X" and "Y".
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ImageSize -> {500, 500}: This option specifies the size of the image area where the slider will be displayed. Here, it sets the image size to 500 pixels in width and 500 pixels in height, providing ample space for the slider.
When you run this code, a 2D slider will appear in a 500x500 image area. The slider has two handles, one for controlling the "X" value and one for controlling the "Y" value. As you move the handles, the corresponding values of "X" and "Y" will update dynamically, and these values can be accessed through the ControllerState dynamic value.
It's important to note that this code only creates the slider control; it doesn't perform any specific actions based on the values controlled by the slider. To utilize these values for specific purposes, such as updating a visualization or performing computations, you would need to integrate this slider control with additional code that defines the desired behavior.
Source code in the wolfram programming language
Slider2D[Dynamic[ControllerState[{"X", "Y"}]], ImageSize -> {500, 500}]
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