https://github.com/yesnault/launchpadx

Launchpadx is a package which helps you write text / color on your Novation Launchpad Mini in Go
https://github.com/yesnault/launchpadx

Last synced: about 1 month ago
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Launchpadx is a package which helps you write text / color on your Novation Launchpad Mini in Go

• Host: GitHub
• URL: https://github.com/yesnault/launchpadx
• Owner: yesnault
• License: bsd-3-clause
• Created: 2018-03-07T21:09:34.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2018-09-09T08:31:37.000Z (about 6 years ago)
• Last Synced: 2024-06-20T10:13:49.400Z (5 months ago)
• Language: Go
• Size: 44.9 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
Launchpadx is a package which helps you write text / color on your Novation Launchpad Mini.

This package uses https://github.com/rakyll/launchpad

## Usage

### Character

```go

package main

import (

	"fmt"

	"math/rand"

	"github.com/rakyll/launchpad"

	padx "github.com/yesnault/launchpadx"

)

func main() {

	pad, err := launchpad.Open()

	if err != nil {

		fmt.Printf("error while openning connection to launchpad: %v", err)

	}

	defer pad.Close()

	fmt.Println("Press a button a-h (vertical) or 1-8 (horizontal) on the launchpad")

	pad.Clear()

	f := padx.Widgets8x8()

	ch := pad.Listen()

	for {

		hit := <-ch

		pad.Clear()

		// check if the key is a menu button : a-h, 1-8

		if btn := buttons.Get(hit); btn != nil {

			// it's a 'button'

			// get a random color

			color := padx.Colors[rand.Intn(len(padx.Colors))]

			// display the key pressed

			fmt.Println("pressed:", hit, "with color:", color.Name)

			f.Widgets[btn.Name].Paint(pad, color, 0)

		} else {

			fmt.Println("pressed (not a button):", hit)

		}

	}

}

```

### Draw a Text

```go

[...]

text := padx.Text("foobar", padx.DirectionLeftToRight, padx.Widgets8x8())

text.Move(pad, -text.Width, 0, padx.ColorRedFull, 500*time.Millisecond)

[...]

```

## Draw a character

```go

// initialize the font

f := padx.Widgets8x8()

// paint a character

f.Widgets["a"].Paint(pad, padx.ColorGreenFull)

// blink a character, 100ms transition, 15 repeats between two colors

f.Widgets["b"].Blink(pad, padx.ColorRedFull, padx.ColorOff, 100*time.Millisecond, 15)

// Move a character, 500ms transition

c := f.Widgets["c"]

c.Move(pad, -text.Width, 0, padx.ColorRedFull, 500*time.Millisecond)

```

## Draw a point

```go

padx.Point(5, 3).Paint(pad, padx.ColorRedFull, 0)

```

## Draw a rectangle

```go

r := padx.Rectangle(0, 0, 8, 8)

r.Paint(pad, padx.ColorGreenFull, 10*time.Millisecond)

fmt.Println("Then clear rectangle with 15ms transition between each pixel")

r.Clear(pad, 15*time.Millisecond)

r2 := padx.Rectangle(0, 0, 2, 2)

r2.Paint(pad, padx.ColorGreenFull, 10*time.Millisecond)

r2.Move(pad, 6, 6, padx.ColorGreenFull, 300*time.Millisecond)

```

## Custom Draw

```go

c := padx.NewCustom([]string{

	"--0--",

	"--0--",

	"00000",

	"--0--",

	"-0-0-",

	"0---0",

})

c.Paint(pad, padx.ColorRedFull, 0)

time.Sleep(100*time.Millisecond)

c.Move(pad, 2, 1, padx.ColorGreenFull, 100*time.Millisecond)

```

## Links

* Rakyll Launchpad Lib: https://github.com/rakyll/launchpad

* Launchpad Programmer's Reference Guide: https://global.novationmusic.com/support/downloads/launchpad-programmers-reference-guide

## License

3-clause BSD