InternalButton based on axis inputs

fovea1959 · December 31, 2018, 10:32am

I remember seeing a team’s nice InternalButton implementation that would take a GenericHID (or Joystick?), an exis specification, and a threshold, and produce a couple of InternalButton objects ; the idea being that commands could be trigger off the joystick (or DPAD) position.

I thought I had it safely squirreled away, but it’s not coming up.

Has anyone else seen this? Don’t want to write something that’s already out in the wild…

Joe_Ross · January 1, 2019, 9:06am

Here it is in C++ http://www.chiefdelphi.com/forums/showpost.php?p=1235329&postcount=6

BigJ · January 1, 2019, 9:06am

Here’s a not-quite-generic version in Java, but could easily be modified to be generic to your needs:

github.com

frc1675/frc1675-2013/blob/master/src/org/frc1675/DPadButton.java

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package org.frc1675;

import edu.wpi.first.wpilibj.GenericHID;
import edu.wpi.first.wpilibj.buttons.Button;

/**
 *
 * @author josh
 */
public class DPadButton extends Button {

    public static final int LEFT = 0;
    public static final int RIGHT = 1;
    
    private GenericHID joystick;
    private int leftOrRight;

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edit: looking at it again, this is such a short class that “modifying it to your needs” is basically rewriting the class, haha. I also looked at the javadoc for InternalButton, and we didn’t use this as one, but I’m pretty sure it could just extend InternalButton instead if you wanted access to setPressed().

fovea1959 · January 1, 2019, 9:06am

Thanks!

and the third answer from team 2168,very similar to both the above.

gist.github.com

https://gist.github.com/jcorcoran/5743806

JoystickAnalogButton.java

import edu.wpi.first.wpilibj.GenericHID;
import edu.wpi.first.wpilibj.buttons.Button;

/**
 * This class allows you to trigger commands from an analog input on
 * a joystick (sich as the triggers - Axis 3). 
 * 
 * 
 * The following example code placed in OI class turns axis 3 into two buttons:
 * ----------------------------------------------------------------------------

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comments are not quite right around the description of the constructor, but it’s also nice to use.

system · January 5, 2020, 6:52am