示例#1
0
func NewSpriteFromImage(fileName string) *Sprite {
	reader, err := os.Open(fileName)
	if err != nil {
		log.Fatal(err)
	}
	defer reader.Close()
	m, _, err := image.Decode(reader)
	if err != nil {
		log.Fatal(err)
	}
	bounds := m.Bounds()

	if bounds.Max.Y-bounds.Min.Y != 8 {
		log.Fatal("Invalid image size")
	}

	s := NewSprite(bounds.Max.X-bounds.Min.X, bounds.Max.Y-bounds.Min.Y)

	for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
		for x := bounds.Min.X; x < bounds.Max.X; x++ {
			r, g, b, _ := m.At(x, y).RGBA()
			s.SetPixel(x-bounds.Min.X, y-bounds.Min.Y, ledmatrix.RGB(int(r>>8), int(g>>8), int(b>>8)))
		}
	}

	return s
}
示例#2
0
func displayBuilder() {
	bg := ledmatrix.RGB(0, 0, 0)
	for {
		message := <-msgQueue
		writerQueue <- compose(message, bg)
	}
}
示例#3
0
func compose(data Message, bg ledmatrix.Color) *ledmatrix.Writer {
	matrix := ledmatrix.NewMatrix(tower.Rows, tower.Columns)
	writer := ledmatrix.NewWriter(matrix)
	writer.Spacer(matrix.Columns, 0) // Blank bootstrap

	for _, line := range data {
		var r, g, b int
		var f bitmapfont.Font

		if line.Font < 8 {
			f = bitmapfont.F68
		} else {
			f = bitmapfont.F88
		}

		fmt.Sscanf(line.Color, "#%02x%02x%02x", &r, &g, &b)
		writer.WriteText(line.Text, f, ledmatrix.RGB(r, g, b), bg)
	}
	return writer
}
示例#4
0
// renderdeTextMessage convert a text to a LED bitmap matrix.
// This method is used by the displayBuilder gorouting.
func textToBitmap(text []Line, bg uint32) *ledmatrix.Matrix {
	matrix := ledmatrix.NewMatrix(rows, 0)
	writer := ledmatrix.NewWriter(matrix)
	writer.Spacer(matrix.Columns, 0) // Blank bootstrap

	for _, line := range text {
		var r, g, b int
		var f font.Font

		if line.Font < 8 {
			f = font.Font6x8
		} else {
			f = font.Font8x8
		}

		fmt.Sscanf(line.Color, "#%02x%02x%02x", &r, &g, &b)
		writer.WriteText(line.Text, f, ledmatrix.RGB(r, g, b), bg)
	}
	return matrix
}
示例#5
0
func towerServer() {
	data := make(Message, 1)
	start := 0
	data[0] = Line{Text: "Booting tower... please wait. ", Font: 6, Color: "#3333FF"}
	currentDisplay := compose(data, ledmatrix.RGB(0, 0, 0))

	for {
		select {
		case m := <-writerQueue:
			currentDisplay = m
			start = 0
		case _ = <-signalChannel:
			log.Println("Shutting down tower now")
			tower.Shutdown()
			os.Exit(0)
		default:
			// continue
		}
		tower.Roll(currentDisplay, start)
		start = tower.Columns
	}
}
示例#6
0
		fmt.Sscanf(line.Color, "#%02x%02x%02x", &r, &g, &b)
		writer.WriteText(line.Text, f, ledmatrix.RGB(r, g, b), bg)
	}
	return matrix
}

// blank generates a "space" from the given color
func blank(len int, bg uint32) *ledmatrix.Matrix {
	matrix := ledmatrix.NewMatrix(rows, columns)
	writer := ledmatrix.NewWriter(matrix)
	writer.Spacer(columns, bg) // Blank spacer
	return matrix
}

var bg = ledmatrix.RGB(0, 0, 0)
var preamble = blank(columns, bg)

func RenderMessage(message *TextMessage) *BitmapMessage {
	// If body is nil, then reset preamble. This is used when static
	// frames are sent to the tower and the next rolling message should
	// start with a blank.
	if message.Body == nil {
		preamble = blank(columns, bg)
		return nil
	}

	// render all parts of the message
	body := textToBitmap(message.Body, bg)
	introduction := textToBitmap(message.Introduction, bg)
	conclusion := textToBitmap(message.Conclusion, bg)