コード例 #1
0
ファイル: sl.go プロジェクト: Ebiroll/openvg
func drawTypeOfTransport(x openvg.VGfloat, y openvg.VGfloat, w openvg.VGfloat, h int, tType string) {

	//openvg.Background(0, 0, 255)

	openvg.FillColor("blue")

	switch tType {
	case "METRO":
		openvg.Text(x, y, "T", "sans", h)
	case "BUS":
		openvg.Text(x, y, "B", "sans", h)
	case "TRAIN":
		openvg.Text(x, y, "J", "sans", h)
	case "TRAM":
		openvg.Text(x, y, "S", "sans", h)
	default:
		openvg.Text(x, y, "D", "sans", h)

	}

	openvg.FillColor("black")

	//openvg.Background(0, 0, 0)

}
コード例 #2
0
ファイル: shapedemo.go プロジェクト: Ebiroll/openvg
// tb draws a block of text
func tb(w, h int) {
	para := []string{
		"For lo,",
		"the winter is past,",
		"the rain is over and gone",
		"the flowers appear on the earth;",
		"the time for the singing of birds is come,",
		"and the voice of the turtle is heard in our land",
	}

	tmargin := openvg.VGfloat(w) * 0.50
	lmargin := openvg.VGfloat(w) * 0.10
	top := openvg.VGfloat(h) * .9
	mid := openvg.VGfloat(h) * .6
	bot := openvg.VGfloat(h) * .3

	fontsize := 24
	leading := openvg.VGfloat(40.0)
	lfontsize := fontsize * 2
	midb := ((leading * 2) + (leading / 2)) - openvg.VGfloat(lfontsize/2)

	openvg.Start(w, h)
	openvg.FillRGB(49, 79, 79, 1)
	textlines(tmargin, top, para, "serif", fontsize, leading)
	textlines(tmargin, mid, para, "sans", fontsize, leading)
	textlines(tmargin, bot, para, "mono", fontsize, leading)
	openvg.Text(lmargin, top-midb, "Serif", "sans", lfontsize)
	openvg.Text(lmargin, mid-midb, "Sans", "sans", lfontsize)
	openvg.Text(lmargin, bot-midb, "Mono", "sans", lfontsize)
	openvg.End()
}
コード例 #3
0
ファイル: clip.go プロジェクト: Ebiroll/openvg
func main() {
	var cx, cy, cw, ch, midy int
	message := "Now is the time for all good men to come to the aid of the party"

	w, h := openvg.Init()
	var speed openvg.VGfloat = 0.5
	var x openvg.VGfloat = 0
	midy = (h / 2)
	fontsize := w / 50
	cx = 0
	ch = fontsize * 2
	cw = w
	cy = midy - (ch / 2)

	rx, ry, rw, rh := openvg.VGfloat(cx), openvg.VGfloat(cy), openvg.VGfloat(cw), openvg.VGfloat(ch)
	// scroll the text, only in the clipping rectangle
	for x = 0; x < rw+speed; x += speed {
		openvg.Start(w, h)
		openvg.Background(255, 255, 255)
		openvg.FillRGB(0, 0, 0, .2)
		openvg.Rect(rx, ry, rw, rh)
		openvg.ClipRect(cx, cy, cw, ch)
		openvg.Translate(x, ry+openvg.VGfloat(fontsize/2))
		openvg.FillRGB(0, 0, 0, 1)
		openvg.Text(0, 0, message, "sans", fontsize)
		openvg.ClipEnd()
		openvg.End()
	}
	bufio.NewReader(os.Stdin).ReadBytes('\n')
	openvg.Finish()
	os.Exit(0)
}
コード例 #4
0
ファイル: shapedemo.go プロジェクト: Ebiroll/openvg
// rshapes draws shapes with random colors, openvg.Strokes, and sizes.
func rshapes(width, height, n int) {

	var sx, sy, cx, cy, px, py, ex, ey, pox, poy openvg.VGfloat

	np := 10
	polyx := make([]openvg.VGfloat, np)
	polyy := make([]openvg.VGfloat, np)
	openvg.Start(width, height)
	for i := 0; i < n; i++ {
		openvg.FillRGB(randcolor(), randcolor(), randcolor(), openvg.VGfloat(rand.Float32()))
		openvg.Ellipse(randf(width), randf(height), randf(200), randf(100))
		openvg.Circle(randf(width), randf(height), randf(100))
		openvg.Rect(randf(width), randf(height), randf(200), randf(100))
		openvg.Arc(randf(width), randf(height), randf(200), randf(200), randf(360), randf(360))

		sx = randf(width)
		sy = randf(height)
		openvg.StrokeRGB(randcolor(), randcolor(), randcolor(), 1)
		openvg.StrokeWidth(randf(5))
		openvg.Line(sx, sy, sx+randf(200), sy+randf(100))
		openvg.StrokeWidth(0)

		sx = randf(width)
		sy = randf(height)
		ex = sx + randf(200)
		ey = sy
		cx = sx + ((ex - sx) / 2.0)
		cy = sy + randf(100)
		openvg.Qbezier(sx, sy, cx, cy, ex, ey)

		sx = randf(width)
		sy = randf(height)
		ex = sx + randf(200)
		ey = sy
		cx = sx + ((ex - sx) / 2.0)
		cy = sy + randf(100)
		px = cx
		py = sy - randf(100)
		openvg.Cbezier(sx, sy, cx, cy, px, py, ex, ey)

		pox = randf(width)
		poy = randf(height)
		for j := 0; j < np; j++ {
			polyx[j] = pox + randf(200)
			polyy[j] = poy + randf(100)
		}
		openvg.Polygon(polyx, polyy) // , np)

		pox = randf(width)
		poy = randf(height)
		for j := 0; j < np; j++ {
			polyx[j] = pox + randf(200)
			polyy[j] = poy + randf(100)
		}
		openvg.Polyline(polyx, polyy) // , np)
	}
	openvg.FillRGB(128, 0, 0, 1)
	openvg.Text(20, 20, "OpenVG on the Raspberry Pi", "sans", 32)
	openvg.End()
}
コード例 #5
0
ファイル: xmlview.go プロジェクト: Ebiroll/openvg
// showgrid xrays a slide
func showgrid(d deck.Deck, n int, p float64) {
	w := openvg.VGfloat(d.Canvas.Width)
	h := openvg.VGfloat(d.Canvas.Height)
	percent := openvg.VGfloat(p)
	fs := (w / 100) // labels are 1% of the width
	xpct := (percent / 100.0) * w
	ypct := (percent / 100.0) * h

	openvg.StrokeColor("lightgray", 0.5)
	openvg.StrokeWidth(3)

	// horizontal gridlines
	xl := percent
	for x := xpct; x <= w; x += xpct {
		openvg.Line(x, 0, x, h)
		openvg.Text(x, percent, fmt.Sprintf("%.0f%%", xl), "sans", int(fs))
		xl += percent
	}

	// vertical gridlines
	yl := percent
	for y := ypct; y <= h; y += ypct {
		openvg.Line(0, y, w, y)
		openvg.Text(percent, y, fmt.Sprintf("%.0f%%", yl), "sans", int(fs))
		yl += percent
	}

	// show boundary and location of images
	if n < 0 || n > len(d.Slide) {
		return
	}
	for _, im := range d.Slide[n].Image {
		x := pct(im.Xp, w)
		y := pct(im.Yp, h)
		iw := openvg.VGfloat(im.Width)
		ih := openvg.VGfloat(im.Height)
		if im.Scale > 0 {
			iw *= openvg.VGfloat(im.Scale / 100)
			ih *= openvg.VGfloat(im.Scale / 100)
		}
		openvg.FillRGB(127, 0, 0, 0.3)
		openvg.Circle(x, y, fs)
		openvg.FillRGB(255, 0, 0, 0.1)
		openvg.Rect(x-iw/2, y-ih/2, iw, ih)
	}
	openvg.End()
}
コード例 #6
0
ファイル: xmlview.go プロジェクト: Ebiroll/openvg
//showtext displays text
func showtext(x, y openvg.VGfloat, t, align, font string, fs openvg.VGfloat) {
	//t := s // fromUTF8(s)
	fontsize := int(fs)
	switch align {
	case "center", "middle", "mid", "c":
		openvg.TextMid(x, y, t, font, fontsize)
	case "right", "end", "e":
		openvg.TextEnd(x, y, t, font, fontsize)
	default:
		openvg.Text(x, y, t, font, fontsize)
	}
}
コード例 #7
0
ファイル: shapedemo.go プロジェクト: Ebiroll/openvg
// textwrap draws text at location, wrapping at the specified width
func textwrap(x, y, w openvg.VGfloat, s string, font string, size int, leading, factor openvg.VGfloat, color string) {
	openvg.FillColor(color)
	wordspacing := openvg.TextWidth("M", font, size)
	words := strings.Split(s, " ")
	xp := x
	yp := y
	edge := x + w
	for i := 0; i < len(words); i++ {
		tw := openvg.TextWidth(words[i], font, size)
		openvg.Text(xp, yp, words[i], font, size)
		xp += tw + (wordspacing * factor)
		if xp > edge {
			xp = x
			yp -= leading
		}

	}
}
コード例 #8
0
ファイル: shapedemo.go プロジェクト: Ebiroll/openvg
// rotext draws text, rotated around the center of the screen, progressively faded
func rotext(w, h, n int, s string) {
	fade := (100.0 / openvg.VGfloat(n)) / 100.0
	deg := 360.0 / openvg.VGfloat(n)
	x := openvg.VGfloat(w) / 2.0
	y := openvg.VGfloat(h) / 2.0
	alpha := openvg.VGfloat(1.0)
	size := w / 8

	openvg.Start(w, h)
	openvg.Background(0, 0, 0)
	openvg.Translate(x, y)
	for i := 0; i < n; i++ {
		openvg.FillRGB(255, 255, 255, alpha)
		openvg.Text(0, 0, s, "serif", size)
		alpha -= fade // fade
		size += n     // enlarge
		openvg.Rotate(deg)
	}
	openvg.End()
}
コード例 #9
0
ファイル: xmlview.go プロジェクト: Ebiroll/openvg
// textwrap draws text at location, wrapping at the specified width
func textwrap(x, y, w openvg.VGfloat, s string, font string, fs, leading, factor openvg.VGfloat) {
	size := int(fs)
	if font == "mono" {
		factor = 1.0
	}
	wordspacing := openvg.TextWidth("m", font, size)
	words := strings.FieldsFunc(s, whitespace)
	xp := x
	yp := y
	edge := x + w
	for _, s := range words {
		tw := openvg.TextWidth(s, font, size)
		openvg.Text(xp, yp, s, font, size)
		xp += tw + (wordspacing * factor)
		if xp > edge {
			xp = x
			yp -= leading
		}
	}
}
コード例 #10
0
ファイル: colortab.go プロジェクト: Ebiroll/openvg
func main() {
	var (
		filename     = flag.String("f", "svgcolors.txt", "input file")
		fontname     = flag.String("font", "sans", "fontname")
		neg          = flag.Bool("neg", false, "negative")
		showrgb      = flag.Bool("rgb", false, "show RGB")
		showcode     = flag.Bool("showcode", true, "show colors and codes")
		circsw       = flag.Bool("circle", true, "circle swatch")
		outline      = flag.Bool("outline", false, "outline swatch")
		fontsize     = flag.Int("fs", 12, "fontsize")
		rowsize      = flag.Int("r", 32, "rowsize")
		colw         = flag.Float64("c", 340, "column size")
		swatch       = flag.Float64("s", 16, "swatch size")
		gutter       = flag.Float64("g", 12, "gutter")
		err          error
		tcolor, line string
	)

	flag.Parse()
	f, oerr := os.Open(*filename)
	if oerr != nil {
		fmt.Fprintf(os.Stderr, "%v\n", oerr)
		return
	}
	width, height := openvg.Init()

	openvg.Start(width, height)
	fw := openvg.VGfloat(width)
	fh := openvg.VGfloat(height)
	if *neg {
		openvg.FillColor("black")
		openvg.Rect(0, 0, fw, fh)
		tcolor = "white"
	} else {
		openvg.FillColor("white")
		openvg.Rect(0, 0, fw, fh)
		tcolor = "black"
	}
	top := fh - 32.0
	left := openvg.VGfloat(32.0)
	cw := openvg.VGfloat(*colw)
	sw := openvg.VGfloat(*swatch)
	g := openvg.VGfloat(*gutter)
	in := bufio.NewReader(f)

	for x, y, nr := left, top, 0; err == nil; nr++ {
		line, err = in.ReadString('\n')
		fields := strings.Split(strings.TrimSpace(line), "\t")
		if nr%*rowsize == 0 && nr > 0 {
			x += cw
			y = top
		}
		if len(fields) == 3 {
			var red, green, blue uint8
			fmt.Sscanf(fields[2], "%d,%d,%d", &red, &green, &blue)
			openvg.FillRGB(red, green, blue, 1)
			if *outline {
				openvg.StrokeColor("black")
				openvg.StrokeWidth(1)
			}
			if *circsw {
				openvg.Circle(x+sw/2, y+sw/2, sw)
			} else {
				openvg.Rect(x, y, sw, sw)
			}
			openvg.StrokeWidth(0)
			openvg.FillColor(tcolor)
			openvg.Text(x+sw+openvg.VGfloat(*fontsize/2), y, fields[0], *fontname, *fontsize)
			var label string
			if *showcode {
				if *showrgb {
					label = fields[1]
				} else {
					label = fields[2]
				}
				openvg.FillColor("gray")
				openvg.TextEnd(x+cw-(sw+g), y, label, *fontname, *fontsize)
			}
		}
		y -= (sw + g)
	}
	openvg.End()
	bufio.NewReader(os.Stdin).ReadBytes('\n')
	openvg.Finish()
}
コード例 #11
0
ファイル: sl.go プロジェクト: Ebiroll/openvg
func main() {
	var sreenHeight, cx, cy, cw, ch, midy int
	message := "Scrolling texts could be useful if the information does not fit on screen"

	w, h := openvg.Init()
	sreenHeight = h
	var speed openvg.VGfloat = 0.5
	var x openvg.VGfloat = 0
	midy = (h / 2)
	fontsize := w / 50
	cx = 0
	ch = fontsize * 2
	cw = w
	cy = midy - (ch / 2)
	var jsonData SLData

	for {
		response, err := http.Get("http://localhost:8000")

		if err == nil {
			defer response.Body.Close()
			contents, err := ioutil.ReadAll(response.Body)
			if err != nil {
				fmt.Printf("Error reading http data, %s", err)
			} else {
				fmt.Printf("Got: %s\n", string(contents))
				if err := json.Unmarshal(contents, &jsonData); err != nil {
					panic(err)
				}
				fmt.Println(jsonData)
			}
		}

		openvg.Start(w, h)
		imgw, imgh := 0, 0
		openvg.Background(255, 255, 255)

		//SLHeight = 60
		var imgPosY = openvg.VGfloat(sreenHeight - 70)
		openvg.Image(4, imgPosY, imgw, imgh, "SL.jpg")

		var TAB1 = openvg.VGfloat(4 * w / 20)
		var TAB2 = openvg.VGfloat(8 * w / 20)

		rx1, rw1, rh1 := openvg.VGfloat(cx), openvg.VGfloat(cw), openvg.VGfloat(ch)
		ty := 0
		rix := 0

		// Buses
		for ty = sreenHeight - (80 + int(rh1)); ty > 0 && rix < len(jsonData.ResponseData.Buses); ty -= ch {
			tempy := openvg.VGfloat(ty)
			//ry := openvg.VGfloat(ty)
			if rix%2 == 0 {
				openvg.FillRGB(0, 0, 0, .2)
				//openvg.Rect(rx1, tempy, rw1, rh1)
				openvg.FillRGB(0, 0, 0, 1)
				tempy = tempy + 6.0
			} else {
				openvg.FillRGB(0, 0, 0, .4)
				openvg.Rect(rx1, tempy, rw1, rh1)
				tempy = tempy + 6.0
				openvg.FillRGB(0, 0, 0, 1)
			}
			openvg.Text(rx1, tempy, jsonData.ResponseData.Buses[rix].LineNumber, "sans", fontsize)
			drawTypeOfTransport(rx1+60, tempy+2, rw1, ch-20, jsonData.ResponseData.Buses[rix].TransportMode)

			openvg.Text(rx1+100, tempy, jsonData.ResponseData.Buses[rix].StopPointDesignation, "sans", fontsize)
			openvg.Text(rx1+TAB1, tempy, jsonData.ResponseData.Buses[rix].DisplayTime, "sans", fontsize)
			var dest = jsonData.ResponseData.Buses[rix].Destination
			dest = replaceAO(dest)
			openvg.Text(rx1+TAB2, tempy, dest, "sans", fontsize)

			//openvg.Translate(x, ry+openvg.VGfloat(fontsize/2))
			//openvg.Background(255,255,0)
			rix = rix + 1
		}
		var trainIx = 0
		for ty = ty - 20; ty > 0 && trainIx < len(jsonData.ResponseData.Trains); ty -= ch {
			tempy := openvg.VGfloat(ty)
			//ry := openvg.VGfloat(ty)
			if rix%2 == 0 {
				openvg.FillRGB(0, 0, 0, .2)
				//openvg.Rect(rx1, tempy, rw1, rh1)
				openvg.FillRGB(0, 0, 0, 1)
				tempy = tempy + 6.0
			} else {
				openvg.FillRGB(0, 0, 0, .4)
				openvg.Rect(rx1, tempy, rw1, rh1)
				tempy = tempy + 6.0
				openvg.FillRGB(0, 0, 0, 1)
			}
			openvg.Text(rx1, tempy, jsonData.ResponseData.Trains[trainIx].LineNumber, "sans", fontsize)
			drawTypeOfTransport(rx1+55, tempy+4, rw1, ch-20, jsonData.ResponseData.Trains[trainIx].TransportMode)
			openvg.Text(rx1+TAB1, tempy, jsonData.ResponseData.Trains[trainIx].DisplayTime, "sans", fontsize)
			var dest = jsonData.ResponseData.Trains[trainIx].Destination
			dest = replaceAO(dest)
			openvg.Text(rx1+TAB2, tempy, dest, "sans", fontsize)

			//openvg.Translate(x, ry+openvg.VGfloat(fontsize/2))
			//openvg.Background(255,255,0)
			trainIx = trainIx + 1
			rix = rix + 1
		}

		//openvg.End()
		openvg.SaveEnd("dump.raw")

		time.Sleep(60 * time.Second)
	}

	bufio.NewReader(os.Stdin).ReadBytes('\n')

	rx, ry, rw, rh := openvg.VGfloat(cx), openvg.VGfloat(cy), openvg.VGfloat(cw), openvg.VGfloat(ch)
	// scroll the text, only in the clipping rectangle
	for x = 0; x < rw+speed; x += speed {
		openvg.Start(w, h)
		openvg.Background(255, 255, 255)
		openvg.FillRGB(0, 0, 0, .2)
		openvg.Rect(rx, ry, rw, rh)
		openvg.ClipRect(cx, cy, cw, ch)
		openvg.Translate(x, ry+openvg.VGfloat(fontsize/2))
		openvg.FillRGB(0, 0, 0, 1)
		openvg.Text(0, 0, message, "sans", fontsize)
		openvg.ClipEnd()
		openvg.End()
	}
	bufio.NewReader(os.Stdin).ReadBytes('\n')
	openvg.Finish()
	os.Exit(0)
}
コード例 #12
0
ファイル: viwer.go プロジェクト: Ebiroll/openvg
func main() {
	var sreenHeight, cx, cy, cw, ch int
	message := "Hej Sandra tack forden mysiga kramen ..... <3 <3 Puss puss"
	w, h := openvg.Init()
	sreenHeight = h
	var speed openvg.VGfloat = 4.0
	var x openvg.VGfloat = 0
	//midy = (h / 2)
	fontsize := w / 50
	cx = 0
	ch = fontsize * 2
	cw = w
	//cy = midy - (ch / 2)
	cy = h - 80
	var jsonData SLData
	var lastmill = makeTimestamp()

	response, err := http.Get("http://localhost:8000")

	if err == nil {
		defer response.Body.Close()
		contents, err := ioutil.ReadAll(response.Body)
		if err != nil {
			fmt.Printf("Error reading http data, %s", err)
		} else {
			fmt.Printf("Got: %s\n", string(contents))
			if err := json.Unmarshal(contents, &jsonData); err != nil {
				panic(err)
			}
			fmt.Println(jsonData)
		}
	}

	openvg.Start(w, h)
	openvg.End()
	go PlayVideo(w, h)

	for {

		openvg.Start(w, h)
		//fmt.Println("W,H",w,h)

		rx, ry, rw, rh := openvg.VGfloat(cx), openvg.VGfloat(cy), openvg.VGfloat(cw), openvg.VGfloat(ch)
		// scroll the text, only in the clipping rectangle

		for x = 0; x < rw+speed; x += speed {

			var mill = makeTimestamp()
			var delta = (mill - lastmill) / 5
			//fmt.Println("delta ", delta)
			//speed

			x = openvg.VGfloat(delta)

			imgw, imgh := 0, 0
			openvg.Background(0, 0, 0)

			//SLHeight = 60
			var imgPosY = openvg.VGfloat(sreenHeight - 120)
			openvg.Image(8, imgPosY, imgw, imgh, "DA4FID.png")

			var TAB1 = openvg.VGfloat(4 * w / 20)
			//var TAB2 = openvg.VGfloat(8*w/20)

			rx1, rw1, rh1 := openvg.VGfloat(cx), openvg.VGfloat(cw), openvg.VGfloat(ch)
			ty := 0
			rix := 0

			// - (120 + int(rh1))
			ty = sreenHeight - 140

			var trainIx = 0
			for ty = ty - 20; ty > 0 && trainIx < len(jsonData.ResponseData.Trains); ty -= ch {
				tempy := openvg.VGfloat(ty)
				//ry := openvg.VGfloat(ty)
				if rix%2 == 0 {
					openvg.FillRGB(255, 255, 255, .2)
					//openvg.Rect(rx1, tempy, rw1, rh1)
					tempy = tempy + 6.0
				} else {
					openvg.FillRGB(255, 255, 255, .4)
					openvg.Rect(rx1, tempy, rw1/3, rh1)
					tempy = tempy + 6.0
				}
				openvg.FillRGB(255, 255, 255, 1)
				//openvg.Text(rx1, tempy, jsonData.ResponseData.Trains[trainIx].LineNumber , "sans", fontsize)
				//drawTypeOfTransport(rx1+55,tempy+4,rw1,ch-20,jsonData.ResponseData.Trains[trainIx].TransportMode)
				openvg.Text(rx1, tempy, jsonData.ResponseData.Trains[trainIx].DisplayTime, "sans", fontsize)
				var dest = jsonData.ResponseData.Trains[trainIx].Destination
				dest = replaceAO(dest)
				openvg.Text(rx1+TAB1, tempy, dest, "sans", fontsize)

				//openvg.Translate(x, ry+openvg.VGfloat(fontsize/2))
				//openvg.Background(255,255,0)
				trainIx = trainIx + 1
				rix = rix + 1
			}

			imgw = 20
			imgh = 20

			//openvg.Image(8, 100 , imgw, imgh, "no_smoking.png")

			// openvg.Start(w, h)
			//openvg.Background(255, 255, 255)
			openvg.FillRGB(100, 0, 0, 1)
			openvg.Rect(rx, ry, rw, rh)
			//openvg.ClipRect(cx, cy, cw, ch)
			//openvg.Translate(x, ry+openvg.VGfloat(fontsize/2))
			openvg.FillRGB(255, 255, 255, 1)
			var pxp openvg.VGfloat = openvg.VGfloat(w) - openvg.VGfloat(x)
			var pyp openvg.VGfloat = openvg.VGfloat(h) - openvg.VGfloat(58)
			openvg.Text(pxp, pyp, message, "sans", fontsize)
			//openvg.ClipEnd()
			openvg.End()
		}

		//openvg.SaveEnd("dump.raw")

		//time.Sleep(60*time.Second);
	}

	bufio.NewReader(os.Stdin).ReadBytes('\n')

	bufio.NewReader(os.Stdin).ReadBytes('\n')
	openvg.Finish()
	os.Exit(0)
}
コード例 #13
0
ファイル: shapedemo.go プロジェクト: Ebiroll/openvg
// refcard shows a reference card of shapes
func refcard(width, height int) {
	shapenames := []string{
		"Circle",
		"Ellipse",
		"Rectangle",
		"Rounded Rectangle",
		"Line",
		"Polyline",
		"Polygon",
		"Arc",
		"Quadratic Bezier",
		"Cubic Bezier",
		"Image",
	}
	top := openvg.VGfloat(height) * .95
	sx := openvg.VGfloat(width) * 0.10
	sy := top
	sw := openvg.VGfloat(width) * .05
	sh := openvg.VGfloat(height) * .045
	dotsize := openvg.VGfloat(7.0)
	spacing := openvg.VGfloat(2.0)
	fontsize := int(openvg.VGfloat(height) * .033)
	shapecolor := Color{202, 225, 255, 1.0}

	openvg.Start(width, height)
	openvg.FillRGB(128, 0, 0, 1)
	openvg.TextEnd(openvg.VGfloat(width-20), openvg.VGfloat(height/2),
		"OpenVG on the Raspberry Pi", "sans", fontsize+(fontsize/2))
	openvg.FillRGB(0, 0, 0, 1)
	for _, s := range shapenames {
		openvg.Text(sx+sw+sw/2, sy, s, "sans", fontsize)
		sy -= sh * spacing
	}
	sy = top
	cx := sx + (sw / 2)
	ex := sx + sw
	openvg.FillRGB(shapecolor.red, shapecolor.green, shapecolor.blue, shapecolor.alpha)
	openvg.Circle(cx, sy, sw)
	coordpoint(cx, sy, dotsize, shapecolor)
	sy -= sh * spacing
	openvg.Ellipse(cx, sy, sw, sh)
	coordpoint(cx, sy, dotsize, shapecolor)
	sy -= sh * spacing
	openvg.Rect(sx, sy, sw, sh)
	coordpoint(sx, sy, dotsize, shapecolor)
	sy -= sh * spacing
	openvg.Roundrect(sx, sy, sw, sh, 20, 20)
	coordpoint(sx, sy, dotsize, shapecolor)
	sy -= sh * spacing

	openvg.StrokeWidth(1)
	openvg.StrokeRGB(204, 204, 204, 1)
	openvg.Line(sx, sy, ex, sy)
	coordpoint(sx, sy, dotsize, shapecolor)
	coordpoint(ex, sy, dotsize, shapecolor)
	sy -= sh

	px := []openvg.VGfloat{sx, sx + (sw / 4), sx + (sw / 2), sx + ((sw * 3) / 4), sx + sw}
	py := []openvg.VGfloat{sy, sy - sh, sy, sy - sh, sy}

	openvg.Polyline(px, py) // , 5)
	coordpoint(px[0], py[0], dotsize, shapecolor)
	coordpoint(px[1], py[1], dotsize, shapecolor)
	coordpoint(px[2], py[2], dotsize, shapecolor)
	coordpoint(px[3], py[3], dotsize, shapecolor)
	coordpoint(px[4], py[4], dotsize, shapecolor)
	sy -= sh * spacing

	py[0] = sy
	py[1] = sy - sh
	py[2] = sy - (sh / 2)
	py[3] = py[1] - (sh / 4)
	py[4] = sy
	openvg.Polygon(px, py) // , 5)
	sy -= (sh * spacing) + sh

	openvg.Arc(sx+(sw/2), sy, sw, sh, 0, 180)
	coordpoint(sx+(sw/2), sy, dotsize, shapecolor)
	sy -= sh * spacing

	var cy, ey openvg.VGfloat
	cy = sy + (sh / 2)
	ey = sy
	openvg.Qbezier(sx, sy, cx, cy, ex, ey)
	coordpoint(sx, sy, dotsize, shapecolor)
	coordpoint(cx, cy, dotsize, shapecolor)
	coordpoint(ex, ey, dotsize, shapecolor)
	sy -= sh * spacing

	ey = sy
	cy = sy + sh
	openvg.Cbezier(sx, sy, cx, cy, cx, sy, ex, ey)
	coordpoint(sx, sy, dotsize, shapecolor)
	coordpoint(cx, cy, dotsize, shapecolor)
	coordpoint(cx, sy, dotsize, shapecolor)
	coordpoint(ex, ey, dotsize, shapecolor)

	sy -= (sh * spacing * 1.5)
	openvg.Image(sx, sy, 110, 110, "starx.jpg")

	openvg.End()
}