Cube generation
Heart beat
Fold → Unfold, 0 → 1
Paint drop
농도, 농담:
1. Density, concentration
2. Depth, intensity
검정의 농도 표현방법
1. 거리에 따른: 수묵화 방법론, it needs a distance, so it needs a view point and viewr, it's a scene from a viewer. it's not easy to represent in topdown (sky) view
2. 겹침에 따라: 3D, 많이 쌓이면 짙어짐