Stripes and Bands

fract repeats the 0–1 range multiple times across the canvas. step splits each repetition into two halves. Together they make stripes.

fract creates repetition

vUv.x * 12.0 stretches 0–1 into 0–12. fract takes only the fractional part, resetting to 0 every time it crosses a whole number — dividing the canvas into 12 equal segments, each with x running 0–1.

step splits each segment

Within each segment, x < 0.5 gives mask 0 (colorA) and x >= 0.5 gives mask 1 (colorB). The result is evenly-spaced alternating stripes.

Exercise

The exercise starts with stripeCount = 8.0 (8 stripes). Change stripeCount to 12.0 to match the reference output.

Answer Breakdown

Higher stripeCount means narrower, denser stripes. The threshold 0.5 in step(0.5, x) makes both colors equal width. Change it to step(0.3, x) and colorA takes 30% while colorB takes 70%.

Swap vUv.x for vUv.y to get horizontal stripes, or use (vUv.x + vUv.y) * 0.5 for diagonal stripes.