コード例 #1
0
ファイル: handlers.go プロジェクト: fun-alex-alex2006hw/golab
// imgHandle serves images of the player's view.
func imgHandle(w http.ResponseWriter, r *http.Request) {
	quality, err := strconv.Atoi(r.FormValue("quality"))
	if err != nil || quality < 0 || quality > 100 {
		quality = 70
	}

	// Center Gopher in view if possible
	gpos := model.Gopher.Pos
	rect := image.Rect(0, 0, ViewWidth, ViewHeight).Add(image.Pt(int(gpos.X)-ViewWidth/2, int(gpos.Y)-ViewHeight/2))

	// But needs correction at the edges of the view (it can't be centered)
	corr := image.Point{}
	if rect.Min.X < 0 {
		corr.X = -rect.Min.X
	}
	if rect.Min.Y < 0 {
		corr.Y = -rect.Min.Y
	}
	if rect.Max.X > model.LabWidth {
		corr.X = model.LabWidth - rect.Max.X
	}
	if rect.Max.Y > model.LabHeight {
		corr.Y = model.LabHeight - rect.Max.Y
	}
	rect = rect.Add(corr)

	model.Mutex.Lock()
	jpeg.Encode(w, model.LabImg.SubImage(rect), &jpeg.Options{quality})
	model.Mutex.Unlock()

	// Store the new view's position:
	Pos = rect.Min
}
コード例 #2
0
ファイル: xs.go プロジェクト: hualet/golang-workspace
func canfit(p *Piece) bool {
	var dx = [...]int{0, -1, 1, -2, 2, -3, 3, 4, -4}
	j := N + 1
	if j >= 4 {
		j = p.sz.X
		if j < p.sz.Y {
			j = p.sz.Y
		}
		j = 2*j - 1
	}
	for i := 0; i < j; i++ {
		var z image.Point
		z.X = pos.X + dx[i]*pcsz
		z.Y = pos.Y
		if !collide(z, p) {
			z.Y = pos.Y + pcsz - 1
			if !collide(z, p) {
				undrawpiece()
				pos.X = z.X
				return true
			}
		}
	}
	return false
}
コード例 #3
0
ファイル: image.go プロジェクト: SohoStudio/go-start
func (self *Image) sourceRectTouchOriginalFromInside(width, height int, horAlign HorAlignment, verAlign VerAlignment) (r image.Rectangle) {
	var offset image.Point
	aspectRatio := float64(width) / float64(height)
	if aspectRatio > self.AspectRatio() {
		// Wider than original
		// so touchOriginalFromInside means
		// that the source rect is as wide as the original
		r.Max.X = self.Width()
		r.Max.Y = int(float64(self.Width()) / aspectRatio)
		switch verAlign {
		case VerCenter:
			offset.Y = (self.Height() - r.Max.Y) / 2
		case Bottom:
			offset.Y = self.Height() - r.Max.Y
		}
	} else {
		// Heigher than original,
		// so touchOriginalFromInside means
		// that the source rect is as high as the original
		r.Max.X = int(float64(self.Height()) * aspectRatio)
		r.Max.Y = self.Height()
		switch horAlign {
		case HorCenter:
			offset.X = (self.Width() - r.Max.X) / 2
		case Right:
			offset.X = self.Width() - r.Max.X
		}
	}
	return r.Add(offset)
}
コード例 #4
0
ファイル: canvas.go プロジェクト: BurntSushi/imgv
// originTrans translates the origin with respect to the current image and the
// current canvas size. This makes sure we never incorrect position the image.
// (i.e., panning never goes too far, and whenever the canvas is bigger than
// the image, the origin is *always* (0, 0).
func originTrans(pt image.Point, win *window, img *vimage) image.Point {
	// If there's no valid image, then always return (0, 0).
	if img == nil {
		return image.Point{0, 0}
	}

	// Quick aliases.
	ww, wh := win.Geom.Width(), win.Geom.Height()
	dw := img.Bounds().Dx() - ww
	dh := img.Bounds().Dy() - wh

	// Set the allowable range of the origin point of the image.
	// i.e., never less than (0, 0) and never greater than the width/height
	// of the image that isn't viewable at any given point (which is determined
	// by the canvas size).
	pt.X = min(img.Bounds().Min.X+dw, max(pt.X, 0))
	pt.Y = min(img.Bounds().Min.Y+dh, max(pt.Y, 0))

	// Validate origin point. If the width/height of an image is smaller than
	// the canvas width/height, then the image origin cannot change in x/y
	// direction.
	if img.Bounds().Dx() < ww {
		pt.X = 0
	}
	if img.Bounds().Dy() < wh {
		pt.Y = 0
	}

	return pt
}
コード例 #5
0
ファイル: ptofchar.go プロジェクト: rjkroege/acme
func (f *Frame) grid(p image.Point) image.Point {
	p.Y -= f.Rect.Min.Y
	p.Y -= p.Y % f.Font.Height
	p.Y += f.Rect.Min.Y
	if p.X > f.Rect.Max.X {
		p.X = f.Rect.Max.X
	}
	return p
}
コード例 #6
0
func main() {
	g = image.NewGray(image.Rectangle{image.Point{0, 0}, image.Point{w, h}})
	// off center seed position makes pleasingly asymetrical tree
	g.SetGray(w/3, h/3, color.Gray{frost})
generate:
	for a := 0; a < n; {
		// generate random position for new particle
		rp := image.Point{rand.Intn(w), rand.Intn(h)}
		if g.At(rp.X, rp.Y).(color.Gray).Y == frost {
			// position is already set.  find a nearby free position.
			for {
				rp.X += rand.Intn(3) - 1
				rp.Y += rand.Intn(3) - 1
				// execpt if we run out of bounds, consider the particle lost.
				if !rp.In(g.Rect) {
					continue generate
				}
				if g.At(rp.X, rp.Y).(color.Gray).Y != frost {
					break
				}
			}
		} else {
			// else particle is in free space.  let it wander
			// until it touches tree
			for !hasNeighbor(rp) {
				rp.X += rand.Intn(3) - 1
				rp.Y += rand.Intn(3) - 1
				// but again, if it wanders out of bounds consider it lost.
				if !rp.In(g.Rect) {
					continue generate
				}
			}
		}
		// x, y now specify a free position toucing the tree.
		g.SetGray(rp.X, rp.Y, color.Gray{frost})
		a++
		// progress indicator
		if a%100 == 0 {
			fmt.Println(a, "of", n)
		}
	}
	f, err := os.Create("tree.png")
	if err != nil {
		fmt.Println(err)
		return
	}
	err = png.Encode(f, g)
	if err != nil {
		fmt.Println(err)
	}
	f.Close()
}
コード例 #7
0
ファイル: util.go プロジェクト: rjkroege/acme
func (f *Frame) cklinewrap(p *image.Point, b *frbox) {
	if b.Nrune < 0 {
		if b.Minwid > byte(f.Rect.Max.X-p.X) {
			p.X = f.Rect.Min.X
			p.Y += f.Font.Height
		}
	} else {
		if b.Wid > f.Rect.Max.X-p.X {
			p.X = f.Rect.Min.X
			p.Y += f.Font.Height
		}
	}
}
コード例 #8
0
ファイル: xs.go プロジェクト: hualet/golang-workspace
func warp(p image.Point, x int) int {
	if !suspended && piece != nil {
		x = pos.X + piece.sz.X*pcsz/2
		if p.Y < rboard.Min.Y {
			p.Y = rboard.Min.Y
		}
		if p.Y >= rboard.Max.Y {
			p.Y = rboard.Max.Y - 1
		}
		//mousectl.MoveTo(image.Pt(x, p.Y))
	}
	return x
}
コード例 #9
0
ファイル: xs.go プロジェクト: hualet/golang-workspace
func collide(pt image.Point, p *Piece) bool {
	pt.X = (pt.X - rboard.Min.X) / pcsz
	pt.Y = (pt.Y - rboard.Min.Y) / pcsz
	for _, q := range p.d {
		pt.X += q.X
		pt.Y += q.Y
		if pt.X < 0 || pt.X >= NX || pt.Y < 0 || pt.Y >= NY {
			return true
		}
		if board[pt.Y][pt.X] != 0 {
			return true
		}
	}
	return false
}
コード例 #10
0
ファイル: draw.go プロジェクト: rjkroege/acme
func (f *Frame) _draw(pt image.Point) image.Point {
	for nb := 0; nb < f.nbox; nb++ {
		b := f.box[nb]
		f.cklinewrap0(&pt, b)
		if pt.Y == f.Rect.Max.Y {
			f.nchars -= f.strlen(nb)
			f.delbox(nb, f.nbox-1)
			break
		}

		if b.Nrune > 0 {
			n, fits := f.canfit(pt, b)
			if !fits {
				break
			}
			if n != b.Nrune {
				f.splitbox(uint64(nb), uint64(n))
				b = f.box[nb]
			}
			pt.X += b.Wid
		} else {
			if b.Bc == '\n' {
				pt.X = f.Rect.Min.X
				pt.Y += f.Font.Height
			} else {
				pt.X += f.newwid(pt, b)
			}
		}
	}
	return pt
}
コード例 #11
0
func main() {
	bounds := image.Rect(0, 0, 100, 100)
	im := image.NewGray(bounds)
	gBlack := color.Gray{0}
	gWhite := color.Gray{255}
	draw.Draw(im, bounds, image.NewUniform(gWhite), image.ZP, draw.Src)
	pos := image.Point{50, 50}
	dir := up
	for pos.In(bounds) {
		switch im.At(pos.X, pos.Y).(color.Gray).Y {
		case gBlack.Y:
			im.SetGray(pos.X, pos.Y, gWhite)
			dir--
		case gWhite.Y:
			im.SetGray(pos.X, pos.Y, gBlack)
			dir++
		}
		if dir&1 == 1 {
			pos.X += 1 - dir&2
		} else {
			pos.Y -= 1 - dir&2
		}
	}
	f, err := os.Create("ant.png")
	if err != nil {
		fmt.Println(err)
		return
	}
	if err = png.Encode(f, im); err != nil {
		fmt.Println(err)
	}
	if err = f.Close(); err != nil {
		fmt.Println(err)
	}
}
コード例 #12
0
ファイル: image.go プロジェクト: kvanbiesen/gocupi
// Clamp a bound to inside the given bounds
func clamp(point image.Point, bounds image.Rectangle) image.Point {
	if point.X < bounds.Min.X {
		point.X = bounds.Min.X
	}
	if point.X >= bounds.Max.X {
		point.X -= bounds.Max.X - 1
	}
	if point.Y < bounds.Min.Y {
		point.Y = bounds.Min.Y
	}
	if point.Y >= bounds.Max.Y {
		point.Y = bounds.Max.Y - 1
	}

	return point
}
コード例 #13
0
ファイル: text.go プロジェクト: zenoss/rog-go
func anchor(r image.Rectangle, flags Anchor, p image.Point) image.Rectangle {
	var dp image.Point
	switch flags & (E | W) {
	case E:
		dp.X = r.Dx()
	case E | W, 0:
		dp.X = r.Dx() / 2
	}
	switch flags & (N | S) {
	case S:
		dp.Y = r.Dy()
	case S | N, 0:
		dp.Y = r.Dy() / 2
	}
	return r.Add(p.Sub(r.Min).Sub(dp))
}
コード例 #14
0
ファイル: thumbnail.go プロジェクト: sandbreaker/graphics-go
// Thumbnail scales and crops src so it fits in dst.
func Thumbnail(dst draw.Image, src image.Image) error {
	// Scale down src in the dimension that is closer to dst.
	sb := src.Bounds()
	db := dst.Bounds()
	rx := float64(sb.Dx()) / float64(db.Dx())
	ry := float64(sb.Dy()) / float64(db.Dy())
	var b image.Rectangle
	if rx < ry {
		b = image.Rect(0, 0, db.Dx(), int(float64(sb.Dy())/rx))
	} else {
		b = image.Rect(0, 0, int(float64(sb.Dx())/ry), db.Dy())
	}

	buf := image.NewRGBA(b)
	if err := Scale(buf, src); err != nil {
		return err
	}

	// Crop.
	// TODO(crawshaw): improve on center-alignment.
	var pt image.Point
	if rx < ry {
		pt.Y = (b.Dy() - db.Dy()) / 2
	} else {
		pt.X = (b.Dx() - db.Dx()) / 2
	}
	draw.Draw(dst, db, buf, pt, draw.Src)
	return nil
}
コード例 #15
0
ファイル: util.go プロジェクト: rjkroege/acme
func (f *Frame) advance(p *image.Point, b *frbox) {
	if b.Nrune < 0 && b.Bc == '\n' {
		p.X = f.Rect.Min.X
		p.Y += f.Font.Height
	} else {
		p.X += b.Wid
	}
}
コード例 #16
0
ファイル: util.go プロジェクト: oov/psd
// clip clips r against each image's bounds (after translating into the
// destination image's coordinate space) and shifts the points sp and mp by
// the same amount as the change in r.Min.
func clip(dst draw.Image, r *image.Rectangle, src image.Image, sp *image.Point, mask image.Image, mp *image.Point) {
	orig := r.Min
	*r = r.Intersect(dst.Bounds())
	*r = r.Intersect(src.Bounds().Add(orig.Sub(*sp)))
	if mask != nil {
		*r = r.Intersect(mask.Bounds().Add(orig.Sub(*mp)))
	}
	dx := r.Min.X - orig.X
	dy := r.Min.Y - orig.Y
	if dx == 0 && dy == 0 {
		return
	}
	sp.X += dx
	sp.Y += dy
	if mp != nil {
		mp.X += dx
		mp.Y += dy
	}
}
コード例 #17
0
func GenerateImage(generatorSpecifications GeneratorSpecifications) *image.RGBA {
	minPoint := image.Point{0, 0}
	maxPoint := minPoint
	for i := 0; i < len(generatorSpecifications.lines); i++ {
		currentLen := len(generatorSpecifications.lines[i].points)
		for j := 1; j <= currentLen; j++ {
			currentPoint := Point(generatorSpecifications.lines[i].points[j%currentLen])
			max := Max(int(generatorSpecifications.lines[i].jagged[j%currentLen]), int(generatorSpecifications.lines[i].jagged[j-1])) + int(generatorSpecifications.lines[i].width)
			min := max / 2
			max -= min

			maxPoint.X = Max(maxPoint.X, currentPoint.X+max)
			maxPoint.Y = Max(maxPoint.Y, currentPoint.Y+max)
			minPoint.X = Min(maxPoint.X, currentPoint.X-min)
			minPoint.Y = Min(maxPoint.Y, currentPoint.Y-min)
		}
	}

	for i := 0; i < len(generatorSpecifications.circles); i++ {
		currentPoint := Point(generatorSpecifications.circles[i].point)
		max := int(generatorSpecifications.circles[i].width + generatorSpecifications.circles[i].jagged)
		min := max / 2
		max += int(generatorSpecifications.circles[i].radius) - min
		min += int(generatorSpecifications.circles[i].radius)

		maxPoint.X = Max(maxPoint.X, currentPoint.X+max)
		maxPoint.Y = Max(maxPoint.Y, currentPoint.Y+max)
		minPoint.X = Min(maxPoint.X, currentPoint.X-min)
		minPoint.Y = Min(maxPoint.Y, currentPoint.Y-min)
	}

	ret := image.NewRGBA(image.Rectangle{minPoint, maxPoint})

	for i := 0; i < len(generatorSpecifications.lines); i++ {
		DrawLine(ret, generatorSpecifications.lines[i])
	}
	for i := 0; i < len(generatorSpecifications.circles); i++ {
		DrawCircle(ret, generatorSpecifications.circles[i])
	}

	return ret
}
コード例 #18
0
ファイル: jwed.go プロジェクト: MasterScrat/bgfileformats
func (poly *jsonWedPolygon) BoundingBox() image.Rectangle {
	min := image.Point{math.MaxUint16, math.MaxUint16}
	max := image.Point{0, 0}

	for _, vert := range poly.Verts {
		if vert.X < min.X {
			min.X = int(vert.X)
		}
		if vert.Y < min.Y {
			min.Y = int(vert.Y)
		}
		if vert.X > max.X {
			max.X = int(vert.X)
		}
		if vert.Y > max.Y {
			max.Y = int(vert.Y)
		}
	}
	return image.Rectangle{min, max}.Canon()

}
コード例 #19
0
ファイル: collage.go プロジェクト: loov/sketchure
func fitted(into image.Rectangle, size image.Point) image.Rectangle {
	ratio := float64(size.X) / float64(size.Y)

	if size.X > into.Dx() {
		size.X = into.Dx()
		size.Y = int(float64(into.Dx()) / ratio)
	}

	if size.Y > into.Dy() {
		size.X = int(float64(into.Dy()) * ratio)
		size.Y = into.Dy()
	}

	r := image.Rectangle{
		Min: into.Min,
		Max: into.Min.Add(size),
	}
	r = r.Add(image.Point{into.Dx() / 2, into.Dy() / 2}).
		Sub(image.Point{size.X / 2, size.Y / 2})

	return r
}
コード例 #20
0
ファイル: Atlas.go プロジェクト: skarr/GarageEngine
func (atlas *ManagedAtlas) LoadGroupSheetOffset(path string, pt image.Point, width, height, frames int) (err error, groupID ID) {
	fName := filepath.Base(path)
	extIndex := strings.LastIndex(fName, ".")
	if extIndex != -1 {
		fName = fName[:extIndex]
	}
	fName = atlas.nextGroupID(fName)

	file, e := os.Open(path)
	if e != nil {
		return e, nil
	}
	defer file.Close()
	ds, e := file.Stat()
	if e != nil {
		return e, nil
	}
	if ds.IsDir() {
		return errors.New("The path is not a file. " + path), nil
	}

	file.Close()

	img, e := LoadImage(path)
	if e != nil {
		return e, nil
	}

	group := make([]ID, 0)

	point := image.Point{pt.X, pt.Y}
	for i := 0; i < frames; i++ {
		is := strconv.FormatInt(int64(i), 10)
		if i == 0 {
			is = ""
		}
		sprite := image.NewRGBA(image.Rect(0, 0, width, height))
		draw.Draw(sprite, sprite.Rect, img, point, draw.Src)
		atlas.AddImage(sprite, fName+is)
		group = append(group, fName+is)

		point.X += width
		if !sprite.Rect.Add(point).In(img.Bounds()) {
			point.X = 0
			point.Y += height
		}
	}
	atlas.groups[fName] = group
	return nil, fName
}
コード例 #21
0
ファイル: spriter.go プロジェクト: redforks/css
func getSpriteSize(imgs []*cssImage) image.Point {
	p := image.Point{}
	for _, img := range imgs {
		st := img.img
		if st.sp.X == -1 {
			st.sp = image.Pt(-p.X, 0)
			p.X += st.dx()
			if p.Y < st.dy() {
				p.Y = st.dy()
			}
		}
	}
	return p
}
コード例 #22
0
ファイル: handlers.go プロジェクト: frankvd/gif-backend
// Image Handler
// Reads the stored GIF & overlay for the authenticated user and returns a new GIF with the overlay copied onto each frame of the input GIF
func imageHandler(w http.ResponseWriter, r *http.Request) {
	token, _ := jwt.ParseFromRequest(r, hmacKeyFunc)
	issuer := token.Claims["iss"].(string)

	gfFile, err1 := os.Open(getFileName("gif:" + issuer))
	overlayFile, err2 := os.Open(getFileName("overlay:" + issuer))

	if err1 != nil || err2 != nil {
		sendResponse(w, 400, map[string]string{
			"error": "Error while reading images",
		})
		return
	}

	// Decode images
	dst, err1 := gif.DecodeAll(gfFile)
	src, _, err2 := image.Decode(overlayFile)

	if err1 != nil || err2 != nil {
		sendResponse(w, 400, map[string]string{
			"error": "Error while decoding images",
		})
		return
	}

	// Create location for the draw
	pt := new(image.Point)
	x, err := strconv.Atoi(r.URL.Query().Get("x"))
	if err != nil {
		x = 0
	}
	y, err := strconv.Atoi(r.URL.Query().Get("y"))
	if err != nil {
		y = 0
	}
	pt.X = x
	pt.Y = y
	// Draw the overlay over each frame of the GIF
	for _, frame := range dst.Image {
		draw.Draw(frame, frame.Bounds(), src, *pt, draw.Over)
	}

	// Encode image to base64
	buffer := new(bytes.Buffer)
	gif.EncodeAll(buffer, dst)
	fmt.Fprint(w, base64.StdEncoding.EncodeToString(buffer.Bytes()))
}
コード例 #23
0
ファイル: pyramid.go プロジェクト: jvlmdr/go-cv
func (pyr *Pyramid) Visualize() image.Image {
	var width, height int
	for _, level := range pyr.Levels {
		if level.Bounds().Dx() > width {
			width = level.Bounds().Dx()
		}
		height += level.Bounds().Dy()
	}

	im := image.NewRGBA64(image.Rect(0, 0, width, height))
	var p image.Point
	for _, level := range pyr.Levels {
		draw.Draw(im, level.Bounds().Add(p), level, image.ZP, draw.Src)
		p.Y += level.Bounds().Dy()
	}
	return im
}
コード例 #24
0
ファイル: jwed.go プロジェクト: MasterScrat/bgfileformats
func (poly *jsonWedPolygon) EffectedTiles(pt image.Point) []int {
	out := make([]int, 0)
	bb := poly.BoundingBox()
	bb.Min.X /= 64
	bb.Min.Y /= 64
	bb.Max.X /= 64
	bb.Max.Y /= 64
	pt.X /= 64
	pt.Y /= 64

	// All tiles in our bounding box should be considered effected
	for y := bb.Min.Y; y <= bb.Max.Y; y++ {
		for x := bb.Min.X; x <= bb.Max.X; x++ {
			out = append(out, y*pt.X+x)
		}
	}

	return out
}
コード例 #25
0
ファイル: sample.go プロジェクト: jvlmdr/go-cv
// Uses half-sample symmetry.
func Symmetric(im image.Image, p image.Point) color.Color {
	b := im.Bounds()
	// Make twice as big.
	d := image.Rectangle{b.Min, b.Max.Add(b.Size())}
	p = p.Mod(d)

	// Move to origin.
	p = p.Sub(b.Min)
	w, h := b.Dx(), b.Dy()
	if p.X > w-1 {
		p.X = 2*w - 1 - p.X
	}
	if p.Y > h-1 {
		p.Y = 2*h - 1 - p.Y
	}
	p = p.Add(b.Min)

	return im.At(p.X, p.Y)
}
コード例 #26
0
ファイル: drawpolys.go プロジェクト: sguzwf/algorithm
// Warning: does modify contents of polys
func DrawPolygons(mul float64, polys []polyclip.Polygon) *image.NRGBA {
	img := image.NewNRGBA(image.Rect(0, 0, 0, 0))
	min := polyclip.Point{0, 0}

	for i, polygon := range polys {
		r0 := safebbox(polygon)
		translate := image.Point{}
		if r0.Min.X < min.X {
			translate.X = int(mul*min.X) - int(mul*r0.Min.X)
			min.X = r0.Min.X
		}
		if r0.Min.Y < min.Y {
			translate.Y = int(mul*min.Y) - int(mul*r0.Min.Y)
			min.Y = r0.Min.Y
		}

		for _, c := range polygon {
			for j, p := range c {
				c[j].X = (p.X - min.X) * mul
				c[j].Y = (p.Y - min.Y) * mul
			}
		}
		r := safebbox(polygon)

		img2 := image.NewNRGBA(img.Bounds().Add(translate).Union(image.Rect(int(r.Min.X), int(r.Min.Y), int(r.Max.X), int(r.Max.Y))))
		draw.Draw(img2, img2.Bounds(), image.Black, image.Pt(0, 0), draw.Src)
		draw.Draw(img2, img.Bounds().Add(translate), img, image.Pt(0, 0), draw.Src)
		img = img2

		for _, c := range polygon {
			polyutil.DrawPolyline(c, brush(img, i))
		}
	}

	return img
}
コード例 #27
0
ファイル: main.go プロジェクト: dylanpoe/golang.org
func main() {
	driver.Main(func(s screen.Screen) {
		w, err := s.NewWindow(nil)
		if err != nil {
			log.Fatal(err)
		}
		defer w.Release()

		var (
			pool = &tilePool{
				screen:   s,
				drawRGBA: drawRGBA,
				m:        map[image.Point]*tilePoolEntry{},
			}
			dragging     bool
			paintPending bool
			drag         image.Point
			origin       image.Point
			sz           size.Event
		)
		for e := range w.Events() {
			switch e := e.(type) {
			case key.Event:
				if e.Code == key.CodeEscape {
					return
				}

			case mouse.Event:
				p := image.Point{X: int(e.X), Y: int(e.Y)}
				if e.Button == mouse.ButtonLeft && e.Direction != mouse.DirNone {
					dragging = e.Direction == mouse.DirPress
					drag = p
				}
				if !dragging {
					break
				}
				origin = origin.Sub(p.Sub(drag))
				drag = p
				if origin.X < 0 {
					origin.X = 0
				}
				if origin.Y < 0 {
					origin.Y = 0
				}
				if !paintPending {
					paintPending = true
					w.Send(paint.Event{})
				}

			case paint.Event:
				generation++
				var wg sync.WaitGroup
				for y := -(origin.Y & 0xff); y < sz.HeightPx; y += 256 {
					for x := -(origin.X & 0xff); x < sz.WidthPx; x += 256 {
						wg.Add(1)
						go drawTile(&wg, w, pool, origin, x, y)
					}
				}
				wg.Wait()
				w.Publish()
				paintPending = false
				pool.releaseUnused()

			case size.Event:
				sz = e

			case error:
				log.Print(e)
			}
		}
	})
}
コード例 #28
0
ファイル: img.go プロジェクト: mehulsbhatt/tools-old
func drawLinesOverGrid(w http.ResponseWriter, r *http.Request, m map[string]interface{}) {

	c := appengine.NewContext(r)

	// prepare a line color
	lineCol := color.RGBA{}
	lineCol.R, lineCol.G, lineCol.B, lineCol.A = 255, 244, 22, 0
	c.Infof("brush color %#v \n", lineCol)

	p := r.FormValue("p")
	if p == "" {
		p = "static/chartbg_400x960__480x1040__12x10.png"
	}
	if p == "" {
		p = "static/pberg1.png"
	}

	f, err := os.Open(p)
	util_err.Err_http(w, r, err, false)
	defer f.Close()

	img, whichFormat, err := image.Decode(f)
	util_err.Err_http(w, r, err, false, "only jpeg and png are 'activated' ")
	c.Infof("serving img format %v %T\n", whichFormat, img)

	switch imgXFull := img.(type) {

	default:
		util_err.Err_http(w, r, false, true, "convertibility into internal color format image.RGBA required")

	case *image.RGBA:

		drawLine := FuncDrawLiner(lineCol, imgXFull)

		xb, yb := 40, 440
		P0 := image.Point{xb + 0, yb - 0}
		drawLine(P0, lineCol, imgXFull)

		for i := 0; i < 1; i++ {

			P1 := image.Point{xb + 80, yb - 80}
			drawLine(P1, lineCol, imgXFull)
			P1.X = xb + 160
			P1.Y = yb - 160
			drawLine(P1, lineCol, imgXFull)
			P1.X = xb + 240
			P1.Y = yb - 240
			drawLine(P1, lineCol, imgXFull)
			P1.X = xb + 320
			P1.Y = yb - 320
			drawLine(P1, lineCol, imgXFull)
			P1.X = xb + 400
			P1.Y = yb - 400
			drawLine(P1, lineCol, imgXFull)

			drawLine = FuncDrawLiner(lineCol, imgXFull)
			yb = 440
			P0 = image.Point{xb + 0, yb - 0}
			drawLine(P0, lineCol, imgXFull)

			P1 = image.Point{xb + 80, yb - 40}
			drawLine(P1, lineCol, imgXFull)
			P1.X = xb + 160
			P1.Y = yb - 90
			drawLine(P1, lineCol, imgXFull)
			P1.X = xb + 240
			P1.Y = yb - 120
			drawLine(P1, lineCol, imgXFull)
			P1.X = xb + 320
			P1.Y = yb - 300
			drawLine(P1, lineCol, imgXFull)
			P1.X = xb + 400
			P1.Y = yb - 310
			drawLine(P1, lineCol, imgXFull)

		}

		SaveImageToDatastore(w, r, imgXFull, "chart1")
		img := GetImageFromDatastore(w, r, "chart1")

		w.Header().Set("Content-Type", "image/png")
		png.Encode(w, img)

		// end case

	}
}
コード例 #29
0
ファイル: bam.go プロジェクト: MasterScrat/bgfileformats
func (bam *BAM) MakeSpriteSheet(imgWriter io.Writer, jsonWriter io.Writer) {
	size := image.Point{0, 0}
	maxY := 0

	jsonData := fmt.Sprintf("{\"frames\": [\n")

	numFramesX := int(math.Sqrt(float64(len(bam.Frames))))
	seqSize := image.Point{0, 0}
	for idx, f := range bam.Frames {
		seqSize.X += int(f.Width)
		if int(f.Height) > seqSize.Y {
			seqSize.Y = int(f.Height)
		}
		if int(f.Height) > maxY {
			maxY = int(f.Height)
		}
		if (idx+1)%numFramesX == 0 {
			size.Y += seqSize.Y
			if seqSize.X > size.X {
				size.X = seqSize.X
			}
			seqSize = image.Point{0, 0}
		}
	}
	size.Y += maxY

	size.X = int(next_pow_two(uint(size.X)))
	size.Y = int(next_pow_two(uint(size.Y)))
	i := image.NewPaletted(image.Rect(0, 0, size.X, size.Y), bam.Image[0].Palette)
	maxY = 0
	y := 1
	x := 1
	lastFrame := len(bam.Frames) - 1
	for idx, frame := range bam.Frames {
		img := &bam.Image[idx]
		drawRect := image.Rect(
			x,
			y,
			x+int(frame.Width),
			y+int(frame.Height),
		)

		draw.Draw(i, drawRect, img, image.Point{0, 0}, draw.Src)

		jsonData += fmt.Sprintf("\t{\"filename\": \"frame_%d\", \"frame\": {\"x\":%d,\"y\":%d,\"w\":%d,\"h\":%d},\"rotated\": false,\"trimmed\":true,\"spriteSourceSize\": {\"x\":%d,\"y\":%d,\"w\":%d,\"h\":%d}, \"sourceSize\": {\"w\":%d,\"h\":%d}}", idx, drawRect.Min.X, drawRect.Min.Y, drawRect.Dx(), drawRect.Dy(), frame.CenterX*-1, frame.CenterY*-1, int16(frame.Width)+frame.CenterX, int16(frame.Height)+frame.CenterY, frame.Width, frame.Height)
		x += int(frame.Width) + 2

		if int(frame.Height) > maxY {
			maxY = int(frame.Height)
		}
		if (idx+1)%numFramesX == 0 {
			y += maxY
			//maxY = 0
			x = 1
		}
		if idx != lastFrame {
			jsonData += fmt.Sprintf(",\n")
		} else {
			jsonData += fmt.Sprintf("\n")
		}
	}
	i.Palette[0] = color.RGBA{0, 0, 0, 0}
	jsonData += fmt.Sprintf("]}\n")
	jsonWriter.Write([]byte(jsonData))
	png.Encode(imgWriter, i)
}
コード例 #30
0
ファイル: main.go プロジェクト: Nightgunner5/gogame
func Paint(w wde.Window, rect image.Rectangle) {
	xOffset, yOffset := GetTopLeft()
	center := layout.Coord{ViewportWidth/2 - xOffset, ViewportHeight/2 - yOffset}

	if center != oldCenter || layout.Version() != oldVersion {
		oldCenter = center
		oldVersion = layout.Version()

		for x := 0; x <= ViewportWidth; x++ {
			for y := 0; y <= ViewportHeight; y++ {
				if layout.Visible(center, layout.Coord{x - xOffset, y - yOffset}) {
					res.Tile(terrain, res.Terrain, uint16(layout.GetSpace(x-xOffset, y-yOffset)), x, y)
					draw.Draw(terrain, image.Rect(x<<res.TileSize, y<<res.TileSize, (x+1)<<res.TileSize, (y+1)<<res.TileSize), image.Transparent, image.ZP, draw.Src)
					for _, t := range layout.Get(x-xOffset, y-yOffset) {
						if !t.NoClient() {
							res.Tile(terrain, res.Terrain, uint16(t), x, y)
						}
					}
				} else {
					res.Tile(terrain, image.Black, 0, x, y)
				}
			}
		}

		switch GetPlayerFlags() & packet.FlagSpriteMask {
		case packet.FlagEngineer:
			for x := 0; x <= ViewportWidth; x++ {
				for y := 0; y <= ViewportHeight; y++ {
					dx, dy := x-ViewportWidth/2, y-ViewportHeight/2
					dist := dx*dx + dy*dy
					if dist <= 3*3 && layout.Visible(center, layout.Coord{x - xOffset, y - yOffset}) {
						for _, t := range layout.Get(x-xOffset, y-yOffset) {
							if t >= layout.WireW && t <= layout.WireS {
								res.Tile(terrain, res.Terrain, uint16(t), x, y)
							}
						}
					}
				}
			}
		}
	}

	minX, maxX := rect.Min.X>>res.TileSize, (rect.Max.X-1)>>res.TileSize+1
	minY, maxY := rect.Min.Y>>res.TileSize, (rect.Max.Y-1)>>res.TileSize+1

	draw.Draw(sprites, sprites.Bounds(), image.Transparent, image.ZP, draw.Src)

	var pixOffset image.Point

	var hasAnimation image.Rectangle
	paintLock.Lock()
	for _, p := range paintContexts {
		if layout.Visible(center, p.To) {
			x1, y1 := p.From.X+xOffset, p.From.Y+yOffset
			x2, y2 := p.To.X+xOffset, p.To.Y+yOffset

			if minX <= x2 && x2 <= maxX && minY <= y2 && y2 <= maxY {
				interp := float32(time.Since(p.Changed)*5) / float32(time.Second)
				if interp >= 1 {
					res.Tile(sprites, res.Actors, p.Sprite, x2, y2)
				} else {
					toInvalidate := image.Rect(x1, y1, x1+1, y1+1).Union(image.Rect(x2, y2, x2+1, y2+1))
					if hasAnimation.Empty() {
						hasAnimation = toInvalidate
					} else {
						hasAnimation = hasAnimation.Union(toInvalidate)
					}
					if p == thePlayer.paint {
						pixOffset.X = int(float32((x1-x2)<<res.TileSize) * (1 - interp))
						pixOffset.Y = int(float32((y1-y2)<<res.TileSize) * (1 - interp))
						hasAnimation = viewport.Bounds()
					}
					res.TileFloat(sprites, res.Actors, p.Sprite, x1, y1, x2, y2, interp)
				}
			}
		}
	}
	paintLock.Unlock()

	draw.Draw(viewport, rect, terrain, rect.Min.Add(pixOffset), draw.Src)
	draw.Draw(viewport, rect, sprites, rect.Min.Add(pixOffset), draw.Over)
	draw.DrawMask(viewport, rect, image.Black, image.ZP, light.Image(-xOffset, -yOffset), rect.Min.Add(light.Origin(-xOffset, -yOffset)).Add(pixOffset), draw.Over)

	if image.Rect(0, 0, 1, 1).Overlaps(rect) {
		mouseTileLock.Lock()
		res.DrawString(viewport, mouseTileString, color.White, res.FontSmall, 1, 1)
		mouseTileLock.Unlock()
	}

	if !hasAnimation.Empty() {
		Invalidate(image.Rectangle{hasAnimation.Min.Mul(1 << res.TileSize), hasAnimation.Max.Mul(1 << res.TileSize)})
	}

	paints++
	/* // For debugging paints
	res.DrawString(viewport, strconv.FormatUint(paints, 10), color.White, res.FontSmall, 300, 1)
	draw.Draw(viewport, image.Rectangle{rect.Min, image.Pt(rect.Max.X+1, rect.Min.Y+1)}, image.White, image.ZP, draw.Src)
	draw.Draw(viewport, image.Rectangle{image.Pt(rect.Min.X-1, rect.Max.Y-1), rect.Max}, image.White, image.ZP, draw.Src)
	draw.Draw(viewport, image.Rectangle{rect.Min, image.Pt(rect.Min.X+1, rect.Max.Y+1)}, image.White, image.ZP, draw.Src)
	draw.Draw(viewport, image.Rectangle{image.Pt(rect.Max.X-1, rect.Min.Y-1), rect.Max}, image.White, image.ZP, draw.Src)
	//*/

	w.Screen().CopyRGBA(viewport, viewport.Bounds())

	w.FlushImage(rect)
}