ZacharyZhang-NY
8be66c09f2
Palette cycling, sky, sun and moon, clouds, starfield, rain, snow, petals, leaves, fireflies, waterfall, ocean, campfire, lava, aurora, lightning, mountains and a season scene; scanlines, vignette, screen shake, flash, dither fades, iris wipes, dissolves, mosaics, glitches, sparkles, explosions and confetti. Home opens on a live scene in the palette's season and a strip of all eight palettes. pixel adds Canvas.Cycled, Sprite.At, SpriteOf, Kit.Toward and Kit.Shot, which spends a cue under Reduce Motion so it never replays; display exports Reduce. Gallery grids and the sidebar are one Tab stop each.
45 lines
1.2 KiB
Go
45 lines
1.2 KiB
Go
package fx
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import (
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type ConfettiOptions struct {
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// Width and Height are dots; zeros mean 160 by 96.
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Width, Height int
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Label string
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}
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// confettiSlots color the bits in turn.
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var confettiSlots = []pixel.Slot{pixel.Accent, pixel.Good, pixel.Warn, pixel.Bad, pixel.Info, pixel.Magic}
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// Confetti tumbles bits of every color down, turning.
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func Confetti(c *ui.Context, o ConfettiOptions) *ui.Element {
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k := pixel.K(c)
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w, h := size("Confetti", o.Width, o.Height, 160, 96)
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return box(c, k, o.Label, w, h).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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g.Clip(0, 0, g.W, g.H, func() { confetti(g, g.Step(10)) })
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})
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}
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// confetti turns each bit flat, edge-on, upright, edge-on.
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func confetti(g pixel.Canvas, step int) {
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for i := range g.W * g.H / 90 {
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speed := 1 + rnd(i, 90)%2
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y := wrap(rnd(i, 91)+step*speed, g.H+4) - 2
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x := wrap(rnd(i, 92)+sway(step+rnd(i, 93), 12, 1), g.W)
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s := confettiSlots[i%len(confettiSlots)]
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switch wrap(step+i, 4) {
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case 0:
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g.Rect(x, y, 2, 1, s)
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case 2:
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g.Rect(x, y, 1, 2, s)
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default:
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g.Dot(x, y, s)
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}
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}
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}
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