Nina Jay Cragg

01Real-time cloth simulation in the browser

Drape

Position-Based Dynamics with Verlet integration. 4,900 particles connected by structural, shear, and bend springs. Sphere-based collision with velocity-corrected friction. Six fabric presets calibrated to real material properties.

4,900

Particles

60/frame

Solver Passes

6

Fabrics

28

Colliders

vel = (pos - prevPos) * damping
pos += vel + gravity * dt²
// 10 constraint iterations
// interleave collision every 3rd

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02A mechanical linkage playground

Kinetic

Iterative relaxation solver for rigid linkage constraints. Seven preset mechanisms from Chebyshev to Strandbeest. Coupler curve tracing at arbitrary parametric positions. Eight procedural material shaders on Canvas 2D.

20/frame

Iterations

7

Mechanisms

8

Materials

1,500

Trace Pts

diff = (dist - restLen) / dist
correction = delta * diff * 0.5
// 20 relaxation iterations
// split equally between nodes

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03A fish tank where every creature is alive

Glub

Seeded PRNG generates deterministic creatures from a combinatorial trait space. Craig Reynolds steering behaviors driven by five personality traits. Eight-state AI with needs. Procedural pixel art with zero image assets.

12

Body Shapes

30+

Palettes

8

AI States

480×270

Resolution

state = (state + 0x6d2b79f5) | 0
t = imul(state ^ (state>>>15), 1|state)
t = (t + imul(t^(t>>>7), 61|t)) ^ t
return ((t ^ (t>>>14))>>>0) / 2**32

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04The algorithm that gets bra sizing right

Froot

Shape-weighted cup calculation using three bust measurements with projection-dependent weighting. Five-layer style scoring across 56 brands. 16MB search index with synonym expansion. Symptom-driven fit solver with conflict resolution.

16M+

Data Points

56

Brands

45K

Posts

5

Score Layers

projected: (stand + lean×2 + lie) / 4
shallow:   (stand×2 + lean + lie) / 4
// safety cap for over-projection:
if lean-stand > 2.5: cap result

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All projects built from scratch — no templates, no boilerplate.