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No.136 · Backgrounds· New

Point Bloom

Four nested shells of fine points, each warped by slow noise into a lumpy, petal-like form and turning at its own pace, so the layers slide past each other like folded membranes with bright rims and a dark, dusted core. A background only, with no text.

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Written for the variant you picked above: Mono

Build a full-bleed black background with an organic point cloud in the middle (WebGL1, one gl.POINTS draw, no libraries), plus an optional slot for content on top. Points: four shells at radii 0.6, 0.72, 0.85 and 0.98, each a Fibonacci lattice of about 20,000 unit directions with a little jitter (60% of that on touch devices), plus 1,400 loose "dust" points inside radius 0.55. Each point carries its shell index (−1 for dust) and a seed. Vertex shader: each shell is rotated on its own (tilted 0.4 × index, turning at 0.06 + 0.035 × index rad/s, alternate shells the other way) and pushed in and out along its direction by its own slow wave, a sum of four sines of the direction and time (±26% of the radius), so it reads as a lumpy petal or brain-like form, and the layers slide past each other. Dust turns slowly with the whole. A light perspective (1 / (1 + 0.22 z)) and a scale of 44% of the smaller side. Membrane alpha = 0.01 + 0.9 × (1 − |n·z|)^2.4, so where a shell curves away from you the points stack into bright rims while the faces you look through stay faint; dust twinkles at its own rate. Sizes 2px (membrane) and 2.4px (dust) × DPR. Fragment shader: a soft round sprite, colour mixed from membrane grey to rim white by alpha, additive blending. Pointer: a fine pointer pushes the points near it outward (Gaussian, up to 0.16 radius), easing in and out. rAF, paused offscreen and in hidden tabs; reduced motion draws one frame; without WebGL a radial gradient ring stands in. Props: palette [rim, membrane, dust], density, radius, speed, motion, children. Selected variant — Mono (mono): Rim #ffffff, membrane #9a9a9a, dust #ffffff: a white and grey cloud on black. This selection takes precedence over references to other themes or options in the general brief. Implement this selected appearance; do not add a variant picker or alternative appearances unless requested. Implementation requirements: Use React and TypeScript. Keep the component self-contained, with uniquely scoped CSS and no animation libraries. Include required imports, styles and font setup in the result. Interaction: A fine pointer pushes the cloud open around it; nothing to click. Motion: Shells turn at 0.06–0.2 rad/s in alternating directions while their surfaces morph slowly; dust twinkles; the pointer push eases at 6% per frame. Accessibility: Decorative and aria-hidden. Reduced motion renders one still frame. Text placed on top reads best over the dark core. Responsive behavior: Fills its container and is sized from the smaller side, so it stays whole on phones; touch devices draw 60% of the points. DPR capped at 2. Touch: No pointer push on touch; the cloud keeps morphing. Preserve keyboard access, visible focus and reduced-motion behavior. Keep fictional demo data and simulated service calls in a separate usage example; expose callbacks for real actions and recover from rejected requests. Keep usage-example links inside the demo: use local buttons or prevent navigation. Demonstration links must not navigate to Vitrine routes or open other pages; preserve real URL support in the reusable component itself. Verify the result at narrow and wide viewport sizes, with keyboard input and reduced motion enabled.

Notes

Interaction
A fine pointer pushes the cloud open around it; nothing to click.
Motion
Shells turn at 0.06–0.2 rad/s in alternating directions while their surfaces morph slowly; dust twinkles; the pointer push eases at 6% per frame.
Accessibility
Decorative and aria-hidden. Reduced motion renders one still frame. Text placed on top reads best over the dark core.
Responsive
Fills its container and is sized from the smaller side, so it stays whole on phones; touch devices draw 60% of the points. DPR capped at 2.
On touch
No pointer push on touch; the cloud keeps morphing.

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