On Fri, Oct 2, 2015 at 8:23 AM, Wayne Stambaugh <stambau...@gmail.com> wrote:
> On 10/1/2015 5:03 PM, Cirilo Bernardo wrote: > [snip] > > Changes so far which can cause problems: > > schematic symbols: > > + many changed size and the location of connection points > > + Diodes were made consistent so K is always Pin 1 (which I think should > > have > > been the case even for THT since K is the marked pin) > > + Orientations may have changed > > > > footprints: > > + (0,0) reference for THT components has changed; I'm not familiar at > > all with > > the orientation of SMT footprints so I can't say if they've changed, > > but some > > rules were put in place to ensure a consistent orientation. I suspect > > the (0,0) > > position remains the 'center of body' since that's what's required by > > placing > > machines, but I haven't been following the changes. > > Has anyone checked if the position files are correct for THT footprints > with the pin 1 reference points at 0,0? If this breaks user's position > files used for pick & place, this is *really* bad and I would consider > this a potential stable release blocker. Someone needs to confirm this > so we can make a decision. > > > + Orientation has changed for many THT components > > > > VRML models: > > + many have changed orientation > > + many have changed (0,0,0) > > I would prefer that the orientation and scaling match footprint so the > user doesn't have to change anything by default. In other words, the > scaling is always 1 and the offsets and rotation angles are always 0. > > I think we would all prefer that, and for VRML models sculpted by users there is no excuse to have anything different. My VRML modeling tools have a simplistic tool to reorient/resize/reposition a model and batch scripts can be written to fix any Wings3D exports (or models from other sources). For MCAD sources however (IGES, STEP) it's a bit trickier. Ideally we would have the MCAD and its original native data and re-export the IGES or STEP file to conform to what KiCad expects, but this is an unrealistic case. For IGES I can write a tool to repackage a model with a correction applied to the position and orientation, but I don't see this happening until at least the middle of 2016; similar tools would be needed to tweak any other 3D formats which we support in the future. - Cirilo [snip]
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