d8d5ea8b6a
Restore missing required asset/flow packages from the pinned nigig revision; retain upstream script isolation, X11 hover, and widget-core fixes. Validated makepad-widgets data feature with Rust 1.97.1.
30 lines
1.4 KiB
Text
30 lines
1.4 KiB
Text
// IRIS — the circle. Deck B opens from the centre (FLIP: deck A closes
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// into it instead). Pattern taught: `self.aspect()` keeps the circle
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// CIRCULAR on a 16:9 canvas — forget it and every iris is an ellipse.
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{
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name: "Iris"
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engine: "transition"
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dials: [
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{name: "SOFT", bind: "p0", default: 0.2},
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{name: "FLIP", bind: "p1", default: 0.0},
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{name: "DIP", bind: "p2", default: 0.0}
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]
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shader: draw.DrawVjFxDuo {
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trans: fn(uv: vec2, t: float) -> vec4 {
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let c = vec2((uv.x - 0.5) * self.aspect(), uv.y - 0.5)
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let r = length(c)
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// Far corner distance, so t = 1 always covers the frame.
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let rmax = 0.5 * sqrt(self.aspect() * self.aspect() + 1.0)
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let soft = 0.005 + self.user.x * 0.2
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let tt = mix(t, 1.0 - t, step(0.5, self.user.y))
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let edge = tt * (rmax + 2.0 * soft) - soft
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let inside = smoothstep(edge + soft, edge - soft, r)
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let cin = mix(self.deck_b(uv), self.deck_a(uv), step(0.5, self.user.y))
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let cout = mix(self.deck_a(uv), self.deck_b(uv), step(0.5, self.user.y))
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let c = cout.mix(cin, inside)
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// DIP: duck through black mid-fade (0 = off, the stock iris).
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let dim = 1.0 - 4.0 * clamp(t, 0.0, 1.0) * (1.0 - clamp(t, 0.0, 1.0)) * self.user.z * 0.9
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return vec4(c.xyz * dim, 1.0)
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}
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}
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}
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