cb49b032df
Squashed from work; the fine-grained history is under tag archive/work-2026-08-26: - vjfx: 104 new presets — the transition lane fills out and the screen family goes wide - vjfx: three lanes land — engine hooks + hold stage, the videomesh engine, and the audio picture - vj: the thumbnail pipeline becomes one honest machine, and effects go livecodable - vj: thumbnails become mp4 — hardware-coded sheets at measured-4K cells, and the bake stops racing the GPU - store: the ceremony dies — batch publish, one transaction, and the engine stops re-reading its own log - store: the ceremony dies — batch publish, one transaction, and the engine stops re-reading its own log - vj: the console grows real transports, and the deck stops lying about reverse - vj: reverse earns a memory, and the effects stop aging - fab: a 3D creation shell and the viewer built on it
97 lines
3.2 KiB
Text
97 lines
3.2 KiB
Text
// HUE CYCLE — the whole frame's hue slides continuously (or steps through
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// a fixed-size palette) while saturation and brightness stay untouched,
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// so the picture keeps its shape and only repaints its colour.
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{
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name: "Hue Cycle"
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engine: "screen"
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seed: 201
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input0: "test"
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speed: 1.0
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beat_pulse: 0.5
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beat_rate: 1.0
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bar_beats: 4
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glow: 1.0
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// PERFORMANCE DIALS — mid-knob = the stock look, exact.
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p0: 0.5 p1: 0.5 p2: 0.5
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dials: [
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{name: "MODE", bind: "p0", default: 0.5},
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{name: "SHIFT", bind: "p1", default: 0.5},
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{name: "COUNT", bind: "p2", default: 0.5}
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]
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color_bg: #x03040a
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color_a: #x30ffd0
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color_b: #xff3a86
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color_c: #xfff0d0
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stages: [
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{kind: "bloom", threshold: 0.6, strength: 1.0, levels: 2}
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]
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// THE LOOK LIVES HERE: the whole frame is this function. MODE blends
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// between a continuous hue rotation and a stepped N-colour palette;
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// SHIFT is the rotation speed, COUNT the palette size in stepped mode.
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// Inputs: uv, content = input0 at uv, cmix = pre-gated content
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// strength. Signals: self.time_beat (time, beat, phase, pulse),
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// self.sig (bar, bpm, energy, dt), self.user (p0..p3),
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// self.col_a/b/c/bg, self.fog (density, glow, content, -).
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shader: draw.DrawVjFxScreen {
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rgb2hsv: fn(c: vec3) -> vec3 {
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let hi = max(c.x, max(c.y, c.z))
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let lo = min(c.x, min(c.y, c.z))
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let d = hi - lo
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let mut h = 0.0
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if d < 0.0001 {
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h = 0.0
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} else if hi == c.x {
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h = modf((c.y - c.z) / d + 6.0, 6.0) / 6.0
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} else if hi == c.y {
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h = ((c.z - c.x) / d + 2.0) / 6.0
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} else {
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h = ((c.x - c.y) / d + 4.0) / 6.0
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}
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let mut s = 0.0
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if hi > 0.0001 {
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s = d / hi
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}
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return vec3(h, s, hi)
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}
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hsv2rgb: fn(h: float, s: float, v: float) -> vec3 {
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let hh = fract(h) * 6.0
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let i = floor(hh)
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let f = hh - i
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let p = v * (1.0 - s)
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let q = v * (1.0 - s * f)
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let t = v * (1.0 - s * (1.0 - f))
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if i < 0.5 {
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return vec3(v, t, p)
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}
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if i < 1.5 {
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return vec3(q, v, p)
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}
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if i < 2.5 {
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return vec3(p, v, t)
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}
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if i < 3.5 {
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return vec3(p, q, v)
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}
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if i < 4.5 {
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return vec3(t, p, v)
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}
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return vec3(v, p, q)
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}
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fx_color: fn(uv: vec2, content: vec4, cmix: float) -> vec4 {
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let hsv = self.rgb2hsv(content.xyz)
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let speed = 0.06 + 0.5 * self.user.y
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let flow = fract(self.time_beat.x * speed)
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let steps = floor(2.0 + 10.0 * clamp(self.user.z, 0.0, 1.0))
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let stepped = floor(hsv.x * steps) / steps
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let mode = clamp(self.user.x, 0.0, 1.0)
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let base_h = mix(stepped, hsv.x, mode)
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let h = fract(base_h + flow)
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let rgb = self.hsv2rgb(h, hsv.y, hsv.z)
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return vec4(rgb * self.fog.y, 1.0)
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}
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}
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}
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