Digital Planning and Design of Landscape Based on Intelligent Sensor Network

Table 1

Comparison between the degrees of continuity of surfaces.

Surface continuity	G0	G1	G2	G3	G4
Characteristics	Position to contact	Tangent continuous	Continuous unsmoothness	Curvature	Curvature
Curvature	Discordance of direction	Curvature lines break in the same direction	Curvature line position continuous	Curvature line position continuous	Curvature line position continuous
Explain		Continuity of derivative	Second-derivative continuity	The third derivative is continuous
A zebra crossing	Staggered discontinuity	Continuous corner	Continuous and smooth	Continuous and smooth	Continuous and smooth