1
vote
1answer
187 views

What is the best way to maintain our programming experiences? [duplicate]

Possible Duplicate: how do you remember programming related stuff? During my work experiences, I always met many kind of blocking problems with different technologies. When I remember the ...
2
votes
3answers
380 views

shadow simulation from buildings

is it possible to calculate shadow areas of buildings or simulate shadows of buildings in a city, using the heights of these buildings and the sun angle and azimuth? the basic light tracing concept ...