// CUBE GRID — a 6x6 wall of small cubes, each carrying its own cell of the
// video (`uv_split: "cells"`), reassembling the whole picture face-on. Once
// a bar the wall runs a staggered flip wave: every cube half-turns on an
// alternating axis and returns, the picture shattering into motion and
// snapping whole again. Pattern taught here: a CONTINUOUS bar-phase flip —
// the angle is a triangle of the bar phase with a per-cube hash delay, so
// there is no accumulator and no pop at the bar wrap.
{
    name: "Cube Grid"
    engine: "videomesh"
    shape: "box"
    seed: 11

    instances: 36
    uv_split: "cells"
    size: 1.05
    // The 6x6 wall spans ~7 units; spread is the orbit camera's reach
    // lever (the grid placement below ignores it).
    spread: 3.2
    fly: 0.35
    alt: 0.6

    beat_pulse: 0.35
    input0: "test"

    color_bg: #x060810
    color_a: #x3fd8c8
    color_b: #x2a5f9a
    color_c: #xd6f6f0

    fog: 0.0
    glow: 1.0

    stages: [
        {kind: "bloom", threshold: 0.75, strength: 0.6, levels: 2}
    ]

    // THE LOOK LIVES HERE — placement + fragment. fx_place lays the 36
    // cubes out as the 6x6 picture (row 0 = the TOP band of the image,
    // so cell row maps to world +y down) and runs the bar flip; fx_axis
    // alternates the flip axis checkerwise; fx_color is the lit cell
    // with a thin grout line.
    shader: draw.DrawVjFxVideomesh {
        fx_axis: fn(id: float, hash: float) -> vec3 {
            let p = modf(modf(id, 6.0) + floor(id / 6.0), 2.0)
            return vec3(1.0 - p, p, 0.001)
        }
        fx_place: fn(id: float, hash: float, t: float) -> vec4 {
            let gx = modf(id, 6.0)
            let gy = floor(id / 6.0)
            let x = (gx - 2.5) * 1.16
            let y = (2.5 - gy) * 1.16
            let ph = fract(self.sig.x - hash * 0.3 + 1.0)
            let fl = 1.0 - abs(2.0 * ph - 1.0)
            let ang = 3.14159 * smoothstep(0.15, 0.85, fl)
            return vec4(x, y, 0.0, ang)
        }
        fx_scale: fn(id: float, hash: float, t: float) -> float {
            return 1.0 + self.time_beat.w * 0.08
        }
        fx_color: fn(t: float, attr: vec4, content: vec4, cmix: float) -> vec4 {
            let lit = content.xyz * (t * (0.5 + 0.5 * attr.z))
            let grout = self.col_a.xyz * (1.0 - attr.z)
                * (0.25 + self.time_beat.w * 0.8 + clamp(self.user.z, 0.0, 4.0))
            return vec4((lit + grout) * self.fog.y, 1.0)
        }
    }
}