本文整理汇总了Golang中github.com/ajstarks/openvg.VGfloat函数的典型用法代码示例。如果您正苦于以下问题:Golang VGfloat函数的具体用法?Golang VGfloat怎么用?Golang VGfloat使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了VGfloat函数的20个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的Golang代码示例。
示例1: imagetest
// imgtest draws images at the corners and center
func imagetest(w, h int) {
openvg.Start(w, h)
imgw := 422
imgh := 238
fiw := openvg.VGfloat(imgw)
fih := openvg.VGfloat(imgh)
fw := openvg.VGfloat(w)
fh := openvg.VGfloat(h)
vgzero := openvg.VGfloat(0.0)
cx := (fw / 2) - (fiw / 2)
cy := (fh / 2) - (fih / 2)
ulx := vgzero
uly := fh - fih
urx := fw - fiw
ury := uly
llx := vgzero
lly := vgzero
lrx := urx
lry := lly
openvg.Start(w, h)
openvg.Background(0, 0, 0)
openvg.Image(cx, cy, imgw, imgh, "desert1.jpg")
openvg.Image(ulx, uly, imgw, imgh, "desert2.jpg")
openvg.Image(urx, ury, imgw, imgh, "desert3.jpg")
openvg.Image(llx, lly, imgw, imgh, "desert4.jpg")
openvg.Image(lrx, lry, imgw, imgh, "desert5.jpg")
openvg.End()
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:29,代码来源:shapedemo.go
示例2: main
func main() {
var color string
openvg.Start(width, height)
openvg.Background(200, 200, 200)
for i := 0; i < niter; i++ {
x := random(0, width)
y := random(height/3, (height*2)/3)
r := random(0, 10000)
switch {
case r >= 0 && r <= 2500:
color = "white"
case r > 2500 && r <= 5000:
color = "maroon"
case r > 5000 && r <= 7500:
color = "gray"
case r > 7500 && r <= 10000:
color = "black"
}
openvg.FillColor(color, openvg.VGfloat(opacity))
openvg.Circle(openvg.VGfloat(x), openvg.VGfloat(y), openvg.VGfloat(size))
}
openvg.End()
bufio.NewReader(os.Stdin).ReadByte()
openvg.Finish()
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:25,代码来源:bubtrail.go
示例3: main
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 = 15.0
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)
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:32,代码来源:clip.go
示例4: rain
// rain shows raindrops
func (d *dimen) rain(color string) {
dd := dimen{x: 0, y: 0, width: d.width / 6, height: d.height / 6}
for i := 0; i < 20; i++ {
dd.x = d.x + d.width*openvg.VGfloat(rand.Float64())
dd.y = d.y + d.height*openvg.VGfloat(rand.Float64())
dd.drop(color)
}
}
开发者ID:Ebiroll,项目名称:openvg,代码行数:9,代码来源:twh.go
示例5: snow
// snow shows the snow icon
func (d *dimen) snow(color string) {
df := dimen{x: 0, y: 0, width: d.width / 6, height: d.height / 6}
for i := 0; i < 20; i++ {
df.x = d.x + d.width*openvg.VGfloat(rand.Float64())
df.y = d.y + d.height*openvg.VGfloat(rand.Float64())
df.flake(color)
}
}
开发者ID:Ebiroll,项目名称:openvg,代码行数:9,代码来源:twh.go
示例6: main
// show the current time, weather and headlines
func main() {
var (
section = flag.String("h", "u.s.", "headline type (arts, health, sports, science, technology, u.s., world, hn)")
location = flag.String("loc", "40.6213,-74.4395", "lat,long for weather")
bgcolor = flag.String("bg", "slateblue", "background color")
textcolor = flag.String("tc", "white", "text color")
width = flag.Int("width", 0, "screen width")
height = flag.Int("height", 0, "screen height")
smartcolor = flag.Bool("sc", false, "smart colors")
thumb = flag.Bool("tn", false, "show thumbnails")
)
flag.Parse()
// initial display
dw, dh := openvg.Init()
if *width > 0 && *height > 0 {
dw, dh = *width, *height
}
openvg.Start(dw, dh)
canvas := display{
width: openvg.VGfloat(dw),
height: openvg.VGfloat(dh),
bgcolor: *bgcolor,
textcolor: *textcolor,
}
canvas.countdown()
openvg.End()
canvas.clock(*smartcolor)
canvas.weather(*location)
canvas.headlines(*section, *thumb)
// update on specific intervals, shutdown on interrupt
dateticker := time.NewTicker(1 * time.Minute)
weatherticker := time.NewTicker(5 * time.Minute)
headticker := time.NewTicker(10 * time.Minute)
sigint := make(chan os.Signal, 1)
signal.Notify(sigint, os.Interrupt)
for {
select {
case <-dateticker.C:
canvas.clock(*smartcolor)
case <-weatherticker.C:
canvas.weather(*location)
case <-headticker.C:
canvas.headlines(*section, *thumb)
case <-sigint:
openvg.Finish()
os.Exit(0)
}
}
}
开发者ID:Ebiroll,项目名称:openvg,代码行数:53,代码来源:twh.go
示例7: raspi
// raspberry pi, scaled to the screen dimensions
func raspi(w, h int, s string) {
midx := openvg.VGfloat(w) / 2
midy := openvg.VGfloat(h) / 2
rw := midx
rh := (rw * 2) / 3
fontsize := w / 25
openvg.Start(w, h)
openvg.Background(255, 255, 255)
makepi(midx-(rw/2), midy-(rh/2), rw, rh)
openvg.FillRGB(128, 0, 0, 1)
openvg.TextMid(midx, midy-(rh/2)-openvg.VGfloat(fontsize*2), s, "sans", fontsize)
openvg.End()
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:14,代码来源:shapedemo.go
示例8: arrowhand
func arrowhand(cx, cy, px, py, r openvg.VGfloat, t float64, value int, color string) {
ax := []openvg.VGfloat{cx, 0, px, 0, cx}
ay := []openvg.VGfloat{cy, 0, py, 0, cy}
t = minadjust(t, value) * deg2rad
rf := float64(r * 0.9)
tf := math.Pi / 45.0
ax[1] = cx + openvg.VGfloat(rf*math.Cos(t-tf))
ay[1] = cy + openvg.VGfloat(rf*math.Sin(t-tf))
ax[3] = cx + openvg.VGfloat(rf*math.Cos(t+tf))
ay[3] = cy + openvg.VGfloat(rf*math.Sin(t+tf))
openvg.FillColor(color)
openvg.Polygon(ax, ay)
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:13,代码来源:clock.go
示例9: planets
//planets is an exploration of scale
func planets(width, height int, message string) {
w := openvg.VGfloat(width)
h := openvg.VGfloat(height)
y := h / 2
margin := openvg.VGfloat(100.0)
minsize := openvg.VGfloat(7.0)
labeloc := openvg.VGfloat(100.0)
bgcolor := "black"
labelcolor := "white"
maxsize := (h / 2) * 0.05
origin := sun.distance
mostDistant := neptune.distance
firstSize := mercury.radius
lastSize := neptune.radius
openvg.Start(width, height)
openvg.BackgroundColor(bgcolor)
for _, p := range solarSystem {
x := vmap(p.distance, origin, mostDistant, margin, w-margin)
r := vmap(p.radius, firstSize, lastSize, minsize, maxsize)
if p.name == "Sun" {
openvg.FillRGB(p.color.Red, p.color.Green, p.color.Blue, 1)
openvg.Circle(margin-(r/2), y, r)
} else {
light(x, y, r, p.color)
openvg.Circle(x, y, r)
if p.name == "Saturn" {
ringwidth := r * 2.35 // Saturn's rings are over 2x the planet radius
openvg.StrokeWidth(3)
openvg.StrokeRGB(p.color.Red, p.color.Green, p.color.Blue, 1)
openvg.Line((x - ringwidth/2), y, (x + ringwidth/2), y)
openvg.StrokeWidth(0)
}
}
if p.name == "Earth" && len(message) > 1 {
openvg.StrokeColor(labelcolor)
openvg.StrokeWidth(1)
openvg.Line(x, y+(r/2), x, y+labeloc)
openvg.StrokeWidth(0)
openvg.FillColor(labelcolor)
openvg.TextMid(x, y+labeloc+10, message, "sans", 12)
}
}
openvg.End()
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:51,代码来源:shapedemo.go
示例10: draw
func draw(w, h openvg.VGfloat) {
paintBG(w, h)
var p particle
var grav = openvg.VGfloat(gravity)
for i := 0; i < nparticles; i++ {
p = particles[i]
openvg.FillRGB(p.r, p.g, p.b, 1)
openvg.Circle(p.x, p.y, p.radius)
// Apply the velocity
p.x += p.vx
p.y += p.vy
p.vx *= 0.98
if p.vy > 0 {
p.vy *= 0.97
}
// Gravity
p.vy -= grav
// Stop p leaving the canvas
if p.x < -50 {
p.x = w + 50
}
if p.x > w+50 {
p.x = -50
}
// When particle reaches the bottom of screen reset velocity & start posn
if p.y < -50 {
p.x = 0
p.y = 0
p.vx = openvg.VGfloat(rand.Intn(maxrand)%30) + 30
p.vy = openvg.VGfloat(rand.Intn(maxrand)%20) + 40
if directionRTL {
p.vx *= -1
p.x = w
}
}
if p.y > h+50 {
p.y = -50
}
particles[i] = p
}
openvg.End()
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:50,代码来源:particles.go
示例11: combohand
func combohand(cx, cy, px, py, r, stroke openvg.VGfloat, t float64, value int, color string) {
thinr := float64(r * 0.25)
t = minadjust(t, value) * deg2rad
tx := cx + openvg.VGfloat(thinr*math.Cos(t))
ty := cy + openvg.VGfloat(thinr*math.Sin(t))
openvg.FillColor(color)
openvg.Ellipse(px, py, stroke*2, stroke*2)
openvg.Ellipse(tx, ty, stroke*2, stroke*2)
openvg.StrokeWidth(stroke)
openvg.StrokeColor(color)
openvg.Line(cx, cy, tx, ty)
openvg.StrokeWidth(stroke * 2)
openvg.Line(tx, ty, px, py)
openvg.StrokeWidth(0)
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:15,代码来源:clock.go
示例12: main
// raspberry pi, scaled to the screen dimensions
func main() {
w, h := openvg.Init()
midx := openvg.VGfloat(w) / 2
midy := openvg.VGfloat(h) / 2
rw := midx
rh := (rw * 2) / 3
fontsize := w / 25
openvg.Start(w, h)
openvg.Background(255, 255, 255)
makepi(midx-(rw/2), midy-(rh/2), rw, rh)
makepi(200, 100, 75, 50)
openvg.FillRGB(128, 0, 0, 1)
openvg.TextMid(midx, midy-(rh/2)-openvg.VGfloat(fontsize*2), "The Raspberry Pi", "sans", fontsize)
WaitEnd()
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:16,代码来源:raspi.go
示例13: main
func main() {
width, height := openvg.Init()
w := openvg.VGfloat(width)
h := openvg.VGfloat(height)
y := h / 2
var (
margin openvg.VGfloat = 100.0
minsize openvg.VGfloat = 7.0
labeloc openvg.VGfloat = 100.0
)
bgcolor := "black"
labelcolor := "white"
maxsize := (h / 2) * 0.05
origin := sun.distance
mostDistant := neptune.distance
firstSize := mercury.radius
lastSize := neptune.radius
openvg.Start(width, height)
openvg.BackgroundColor(bgcolor)
for _, p := range solarSystem {
x := vmap(p.distance, origin, mostDistant, margin, w-margin)
r := vmap(p.radius, firstSize, lastSize, minsize, maxsize)
if p.name == "Sun" {
openvg.FillRGB(p.color.Red, p.color.Green, p.color.Blue, 1)
openvg.Circle(margin-(r/2), y, r)
} else {
light(x, y, r, p.color)
openvg.Circle(x, y, r)
}
if p.name == "Earth" && len(os.Args) > 1 {
openvg.StrokeColor(labelcolor)
openvg.StrokeWidth(1)
openvg.Line(x, y+(r/2), x, y+labeloc)
openvg.StrokeWidth(0)
openvg.FillColor(labelcolor)
openvg.TextMid(x, y+labeloc+10, os.Args[1], "sans", 12)
}
}
openvg.End()
bufio.NewReader(os.Stdin).ReadByte()
openvg.Finish()
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:48,代码来源:planets.go
示例14: fitwidth
// adjust the font to fit within a width
func (f *FW) fitwidth(width, adj int, s string) {
f.tw = openvg.TextWidth(s, f.font, f.fontsize)
for f.tw > openvg.VGfloat(width) {
f.fontsize -= adj
f.tw = openvg.TextWidth(s, f.font, f.fontsize)
}
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:8,代码来源:shapedemo.go
示例15: flake
// flake shows the snowflake icon
func (d *dimen) flake(color string) {
x, y, w, h := d.x, d.y, d.width, d.height
cx := x + (w / 2)
cy := y + (h / 2)
r := w * 0.30
openvg.StrokeColor(color)
openvg.StrokeWidth(w / 20)
for t := 0.0; t < 2*math.Pi; t += math.Pi / 4 {
c := openvg.VGfloat(math.Cos(t))
s := openvg.VGfloat(math.Sin(t))
x1 := (r * c) + cx
y1 := (r * s) + cy
openvg.Line(cx, cy, x1, y1)
}
openvg.StrokeWidth(0)
}
开发者ID:Ebiroll,项目名称:openvg,代码行数:17,代码来源:twh.go
示例16: rshapes
// 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()
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:61,代码来源:shapedemo.go
示例17: main
func main() {
width, height := openvg.Init() // OpenGL, etc initialization
w2 := openvg.VGfloat(width / 2)
h2 := openvg.VGfloat(height / 2)
w := openvg.VGfloat(width)
openvg.Start(width, height) // Start the picture
openvg.BackgroundColor("black") // Black background
openvg.FillRGB(44, 100, 232, 1) // Big blue marble
openvg.Circle(w2, 0, w) // The "world"
openvg.FillColor("white") // White text
openvg.TextMid(w2, h2, "hello, world", "serif", width/10) // Greetings
openvg.End() // End the picture
bufio.NewReader(os.Stdin).ReadBytes('\n') // Pause until [RETURN]
openvg.Finish() // Graphics cleanup
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:17,代码来源:hellovg.go
示例18: main
func main() {
setOptions()
rand.Seed(time.Now().Unix())
w, h := openvg.Init()
width, height := openvg.VGfloat(w), openvg.VGfloat(h)
initParticles(width, height)
openvg.Start(w, h)
i := 0
for {
draw(width, height)
i++
if alternate && i == nswitch { // switch launch direction every nswitch draws
directionRTL = !directionRTL
i = 0
}
}
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:17,代码来源:particles.go
示例19: tb
// 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()
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:32,代码来源:shapedemo.go
示例20: initParticles
// Initialize _all_ the particles
func initParticles(w, h openvg.VGfloat) {
particles = make([]particle, nparticles)
for i := 0; i < nparticles; i++ {
particles[i].x = 0
particles[i].y = 0
particles[i].vx = openvg.VGfloat(rand.Intn(maxrand)%30) + 30
particles[i].vy = openvg.VGfloat(rand.Intn(maxrand)%20) + 40
particles[i].r = uint8(rand.Intn(255))
particles[i].g = uint8(rand.Intn(255))
particles[i].b = uint8(rand.Intn(255))
particles[i].radius = openvg.VGfloat(rand.Intn(maxrand)%20) + 20
if directionRTL {
particles[i].vx *= -1
particles[i].x = w
}
}
}
开发者ID:jhautefeuille,项目名称:openvg,代码行数:19,代码来源:particles.go
注:本文中的github.com/ajstarks/openvg.VGfloat函数示例整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。 |
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