I want to tilt my roof slab. However, the tilt axis appears along the
short edge. How can I change the tilt axis so that the roof slab rotates
along the long axis?
I assume you're asking about a detailed-level edit.
The angle of the tilt axis is defined indirectly by the azimuth.
Adjust your surface azimuth until the "tilt axis" appears correct, then
adjust your X/Y/Z coordinates to reposition the surface. You may wish
to copy/modify the polygon being referenced if the end-result is too
wacky-looking. This is often a good time to ask yourself: is
"correcting" this shape necessary for model accuracy, or only achieving
aesthetic results?
If rectilinear, you may find it easier to define tilted roof geometries
by height/width: Change "Location: Top" (default for flat roofs coming
out of the wizards) to one of the vertex options, set Z=space height,
and go to town with the 3D view in the background to see what's going on
as you tweak the width/height/tilt variables. Reference the associated
space polygon(s) if necessary to ensure your decimal dimensions will
sync with the rest of the model.
The advice on playing with the surface azimuth is not working. I tried 4
different azimuth angles (see attached image az1.jpeg) and in all of
them the rotation is along the short edge. I would like the rotation
along the long edge. But how to do that?
There are 2 advices on the list:
http://lists.onebuilding.org/htdig.cgi/equest-users-onebuilding.org/2009-September/002320.html
http://lists.onebuilding.org/htdig.cgi/equest-users-onebuilding.org/2010-April/004219.html
The first one (inverting the X and Y coordinates) is close to the
solution but coordinates are the mirror (see attached image az2.jpeg).
The second one does not work at all.
It seems that the polygons always tilt on their local x-axis (independent of space or shell coordinate systems). I don't know how eQUEST determines the axes from the initial wizard inputs, but you can redefine polygons to force it.
I have access to CAD, so I've been recreating the polygons in CAD and twirling them around/changing the 1st vertex so that the x-axis and my intended tilt axis are the same, then inputting the new vertices back into the .inp file as a new polygon. You then have to wrestle the roof/wall back to its intended spot. Measuring off of a CAD file helps here too.
I haven't done too many, let me know if that works for others. And as noted by some very experienced users earlier, think about cost/benefit ratio before you spend lots of time on sloped roofs.
Hi Ali,
I assume you're asking about a detailed-level edit.
The angle of the tilt axis is defined indirectly by the azimuth.
Adjust your surface azimuth until the "tilt axis" appears correct, then
adjust your X/Y/Z coordinates to reposition the surface. You may wish
to copy/modify the polygon being referenced if the end-result is too
wacky-looking. This is often a good time to ask yourself: is
"correcting" this shape necessary for model accuracy, or only achieving
aesthetic results?
If rectilinear, you may find it easier to define tilted roof geometries
by height/width: Change "Location: Top" (default for flat roofs coming
out of the wizards) to one of the vertex options, set Z=space height,
and go to town with the 3D view in the background to see what's going on
as you tweak the width/height/tilt variables. Reference the associated
space polygon(s) if necessary to ensure your decimal dimensions will
sync with the rest of the model.
Best of luck,
~Nick
NICK CATON, P.E.
Dear Nick and Others,
The advice on playing with the surface azimuth is not working. I tried 4
different azimuth angles (see attached image az1.jpeg) and in all of
them the rotation is along the short edge. I would like the rotation
along the long edge. But how to do that?
There are 2 advices on the list:
http://lists.onebuilding.org/htdig.cgi/equest-users-onebuilding.org/2009-September/002320.html
http://lists.onebuilding.org/htdig.cgi/equest-users-onebuilding.org/2010-April/004219.html
The first one (inverting the X and Y coordinates) is close to the
solution but coordinates are the mirror (see attached image az2.jpeg).
The second one does not work at all.
Any suggestions?
Thanks
Folks,
I think I may have finally worked this one out.
It seems that the polygons always tilt on their local x-axis (independent of space or shell coordinate systems). I don't know how eQUEST determines the axes from the initial wizard inputs, but you can redefine polygons to force it.
I have access to CAD, so I've been recreating the polygons in CAD and twirling them around/changing the 1st vertex so that the x-axis and my intended tilt axis are the same, then inputting the new vertices back into the .inp file as a new polygon. You then have to wrestle the roof/wall back to its intended spot. Measuring off of a CAD file helps here too.
I haven't done too many, let me know if that works for others. And as noted by some very experienced users earlier, think about cost/benefit ratio before you spend lots of time on sloped roofs.
Thanks,
Wesley