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.
40 lines
1.1 KiB
Go
40 lines
1.1 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 OceanOptions struct {
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// Width and Height are dots; zeros mean 160 by 64.
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Width, Height int
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Label string
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}
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// Ocean rolls wave crests toward you by cycling their slots.
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func Ocean(c *ui.Context, o OceanOptions) *ui.Element {
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k := pixel.K(c)
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w, h := size("Ocean", o.Width, o.Height, 160, 64)
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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() { ocean(g, k, g.Step(6)) })
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})
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}
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// ocean's crest rows grow sparser and longer downward.
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func ocean(g pixel.Canvas, k pixel.Kit, step int) {
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g.Rect(0, 0, g.W, g.H, pixel.Info)
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g.Dither(0, 0, g.W, 2, pixel.Info, light(k), 6)
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// Crest row j shows the band turned back each step.
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band := pixel.Cycle([]pixel.Slot{pixel.Info, pixel.Info, pixel.AccentLit, light(k)}, -step)
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for y, j := 3, 0; y < g.H; j++ {
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if s := band[j%len(band)]; s != pixel.Info {
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for i := range max(1, g.W/12) {
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g.HLine(rnd(i, 120+j)%g.W, y, 2+j/2, s)
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}
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}
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y += 2 + j/2
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}
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}
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