Dec 27, 2025, 8:37:22 AM
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Sweet Home 3D Forum » List all forums » » Forum: Installation » » » Thread: Has the renderingprosess been altered i 5.2? » » » » Post: Re: Has the renderingprosess been altered i 5.2? |
Print at Dec 27, 2025, 8:37:22 AM |
| Posted by mazoola at Feb 26, 2016, 7:59:28 PM |
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Re: Has the renderingprosess been altered i 5.2? The only similar issue I've seen has had to do with SH3D/SunFlow handling of refraction -- but that at least in part had to do with, once again, Sketchup-to-SH3D issues. Still early in my use of these two programs, I modeled a custom glass-walled shower in Sketchup and exported it for use in SH3D. When rendered with Visitor line-of-sight at an obtuse angle to the shower wall, objects on the other side of the glass would show unrealistic amounts of refraction, often displacing them significantly. The problem seemed to stem from the way Sketchup handles the surfaces of solids. If I defined each pane of glass as a three-dimensional object -- say, as a rectangular solid 7 feet high by 3 feet wide by 1/4 inch deep -- instead of simply as a face object, dimensionless along the third dimension, the resulting object is actually more like a Thermopane glazing unit (imagine a hollow glass box) than sheet glass. I've yet to look at SunFlow's refraction handling, but it appears refraction is calculated whenever a shot ray crosses a boundary between two objects with different indices of refraction. Depending on how conscientious I was about eliminating all 'default' surface textures, there could be as many as four such boundaries to cross. As best I recall, my fix was simply to avoid generating renders with the shower front aligned at too great an angle from the Visitor line of sight. (There seemed to be a possible SunFlow issue beyond the unintentionally cumulative effects of refraction, though; at the furthest edges of the glass, the transmitted image was displaced so severely, the shower wall began to look like a fisheye lens.) Given your windows appear to be stock SH3D models, none of this should apply -- but it might be interesting to replace the windows with service hatches (or set the glass panes to 'invisible') and re-render, just to see if refraction plays a role here. |
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