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Forums >> Revit Building >> Technical Support >> true north and plan north effect on sun angles
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Joined: Mon, Nov 1, 2004
7 Posts
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I have a plan with true north rotated 39 deg from project north. I have created perspective views using the camera process and create a scene with specific settings for a time and place. When I render it the sun angles are not based on true north but appear to be oriented to the project north. I have tried creating the camera views utilizing plan views that are oriented to both true and project north. It doesn't seem to matter. I have also turned on the shadow setting (bottom left of work screen) and set shadows to a specific time and place. In this case the shandows are based on true north. Why the discrepancy, am I missing a setting in the rendering system? This is criticle because I am design shading devices for an existing home and need to show the client what will actually happen.
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Joined: Mon, Mar 14, 2005
777 Posts
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in your render setting, is "use sun and shading from view" ticked? if so un tick and see what happens... 
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Integrator Architectural Engineering Construction KarelCAD |
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Joined: Mon, Nov 1, 2004
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yes the setting is NOT checked for "use sun and shanding from view". Maybe I can clearify my problem. In the site plan view I use the button on the lower left of the image area that is "shadows on/off" clicking on this pulls up list in which I select "Advanced Model Graphics" and then select "Sun and Shadow Settings" from here I pick a precise time and date. The shadows look accurate. I then create a camera view and when displayed as a model (just a line drawing, no rendering, but with shodows on) the shadow angles look the same as the site plan discussed above. At this point I select settings from the rendering menu and create a scene with the exact same location, time and date as in the "shadows on/off" setting for the site plan. When I raytrace the image the shadow angles change and are not the same. I have set the angle rotation for true north to project north at zero to eliminate any conflict with this variable.
I have also tried setting directly the Azimuth and Altitude values to make the two shadow and shading match and they don't.
Any thoughts.
I hope this makes some sence to someone. Thanks for any help
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Joined: Mon, Mar 14, 2005
777 Posts
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if that's the case than TICK the "use sun and shanding from view".
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Integrator Architectural Engineering Construction KarelCAD |
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