P2-5-8 
y 
Building 
View Angle 
selected by users 
Shadow Angle selected by users 
Building 
2 
View 
Shadow 
shift 
x 
Point A v of Building 1 shadows Point B v of Building 2 
as analysed using the "Depth Distance" ( A s A' > B S B' ) 
Fig. 7 Shadow analysis using the depth distance 
1 
2 
3 
4 
Fig.8 Various examples of 3D view map of buildings with different height and view/shadow shift direction