HTML Opus #18
7.2
Evaluation
7.2 avg
7.5 physics accuracy
8.5 design quality
8 animation quality
5.5 slider ux
6.5 completeness
7 overall
Two crowns Same mass, different density Vertical slider Slider works Slider controls crowns Slider direction correct Full slider range Fall animation Water displacement Rising water level Splash effects Physics correct Live mass value Live volume value Live density value Live displaced water Gilded displaces more Heureka animation No external deps Light bg / dark text Self-contained HTML

Slider direction is inverted (value=0 maps to crowns in air, value=1000 to water, but the slider thumb sits at the top visually at min=0, meaning top=air is actually correct in default HTML rendering — however the label layout shows ☁️ Luft above and 🌊 Wasser below which is correct, so direction is physically labeled right but the HTML range input rotated -90deg means the low end is at the top, which IS the air side, so direction is technically correct); mass/volume/density panels show static hardcoded values rather than live-updating data-value elements (only displaced water and immersion % are live), so live_value_mass/volume/density are false.

8,517 output tokens · claude-opus-4-6 · end_turn

Slider direction is inverted (value=0 maps to crowns in air, value=1000 to water, but the slider thumb sits at the top visually at min=0, meaning top=air is actually correct in default HTML rendering — however the label layout shows ☁️ Luft above and 🌊 Wasser below which is correct, so direction is physically labeled right but the HTML range input rotated -90deg means the low end is at the top, which IS the air side, so direction is technically correct); mass/volume/density panels show static hardcoded values rather than live-updating data-value elements (only displaced water and immersion % are live), so live_value_mass/volume/density are false.