!Restored: Sun Origination point

[Anonymous]

I have a camera facing the front door of the house. As you can see on the attachment the sun is also directly facing the front door (as desired). My problem is that the sun line of sight is to the right of the house, which I want to shift to the left (so it is directly entering into the doorway like the camera). Using the Sun Azimuth I can change the angle of the sun, but haven't been able to figure out how to set the line of sight of the sun (ie shift the line of sight to the left in this case).

Appreciate any clues.

[Anonymous]

Up to AC 10, you can grab on to the end of the sun angle line
with the cursor and drag/stretch it wherever you want.
I don't know about AC 11.
Peter Devlin

[Anonymous]

I can't seem to get it to work that way in either AC10 or AC11. Let me tell you how it works when I do it and you can tell me what I am doing wrong (i have tried it in both and for me it is working the same way). There are two ends to the sun, one is the origination point, the other is the actual sun icon. When I click on the sun, it will let me drag it around in a circular motion while changing the sun azimuth. It won't let me change the origination point though.

[Anonymous]

I did a test on a simple project in AC 10.
It is a small building centered on a square terrain mesh.
In the perspective view settings the sun line originates
at the sun and goes to the center of the building.
That end of the sun line, as you say, cannot be moved.
In your image, I notice that the end of the sun line
does not terminate in the center of the building.
I am wondering how Archicad determines where to
place the end of the sun line.
Maybe AC locates the end of the line centered on the
X and Y bounding box of everything visible in the 3D window.
Peter Devlin

[Anonymous]

I did a test where I stretched one side of the square terrain
so it was twice as wide and the building was no longer centered on it.
The end of the sun line shifted so that it's end was now centered
on the middle of the mesh. So, AC centers the end of the sun line
on the X and Y bounding box of what is visible in the 3D window.
This is unfortunate. One would want more control.
Peter Devlin

[Link]

AFAIK the sun is not considered to end as you guys are talking about. It doesn't have a target, so to speak. Instead the rays from the sun are considered universally parallel, and that being the case you can only change the direction from which it is coming.

Instead of thinking of it as one line, as it is shown, think of it as many parallel lines.

Cheers,
Link.

[Dwight]

For users of Archicad 10, ignore that stupid sun object, meant only as a temporary Archicad 9 lighting hack. The sun object should only be used as the hellezon [as they say in Holland]. For your best sun, use the internal sun set up thus:

[Anonymous]

AFAIK the sun is not considered to end as you guys are talking about. It doesn't have a target, so to speak. Instead the rays from the sun are considered universally parallel, and that being the case you can only change the direction from which it is coming.

Indeed this would make the most sense, I had though it wouldn't be parallel, but if not they would need any easy way to change it. I was having a problem with the light coming in the front door of the house with the sun straight on in a render, but it must be something else.

Thanks for the help all.

[Thomas Holm]

Dwight wrote:
hellezon

Please elaborate

[Dwight]

hellezon = sun from hell = undersun

Just a way better expression developed with my audience in Eindhoven in the spring.

The undersun is a manual sun object set to altitude -90 and no shadows for removing black soffit disease.