Shadow Locations for Sydney Australia

[alex dounis]

Hi,

I am an old accurender 3.1 user who has just purchased nxt accurender for autocad, I wanted to know if anyone can please help me in regards to shadow casting in a location, in accurender 3.1 , I was able to select Sydney australia, as my location and made sure that north was on the Y axis. Under NXTaccurender, I cannot find location or maybe I have missed it. Can anyone please help me with this, as I do alot of shadow cast for council and need some help. I have done searches but have not been able to find anything. Any help would be much appreciated.

Look forward to your replies

cheers

Alex

[alex dounis]

Below is any example of my problem. IN regards to the sun , I have nominated the Sydney latitude of 33.86 and the longitude of 151.209, along with selecting +10.00 for location , however when it comes to casting the shadow for 12 noon, the shadow cast is incorrect, almost reversed, I have attached an image for viewing, I have rotated the model as so it is using the Y axis as the north point , Can someone please tell me what I am doing wrong, I would really appreciate some help.

Thanks

Alex

[Garret Diduck]

Since you're in the southern hemisphere, you'll need to make the latitude a (-) negative value. I think it will work then. This is what I get using a negative latitude. (I have no idea if this is correct angle of the shadow for you though).

[Roy Hirshkowitz]

Use -33.86 for the latitude (south latitudes use negative numbers, as do west longitudes like Seattle).  You can set North to any direction you like in the same interface.  Let me know if it works.

[Roy Hirshkowitz]

Garret is correct on another count, BTW-- since it's daylight savings time right now in Australia you should have the Daylight Time checkbox checked.  That makes it +11 UTC (Australia Daylight Time).

[alex dounis]

Thankyou Gentlemen

It worked. much appreciated.