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Ensure thermal spoke widths are smaller than the pad size (fix a regression) 

This is needed to create good thermal reliefs, and ensure the DRC about
thermal spoke count works.
Fixes #10246
https://gitlab.com/kicad/code/kicad/issues/10246
This commit is contained in:
jean-pierre charras 2022-01-07 16:38:27 +01:00
parent 534d635dd4
commit 53770fec68
1 changed files with 6 additions and 2 deletions
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8
pcbnew/zone_filler.cpp
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@ -1316,12 +1316,16 @@ void ZONE_FILLER::buildThermalSpokes( const ZONE* aZone, PCB_LAYER_ID aLayer,
int spoke_w = constraint.GetValue().Opt();
// Spoke width should ideally be smaller than the pad minor axis.
spoke_w = std::min( spoke_w, pad->GetSize().x );
spoke_w = std::min( spoke_w, pad->GetSize().y );
// Otherwise the thermal shape is not really a thermal relief,
// and the algo to count the actual number of spokes can fail
int spoke_max_allowed_w = std::min( pad->GetSize().x, pad->GetSize().y );
spoke_w = std::max( spoke_w, constraint.Value().Min() );
spoke_w = std::min( spoke_w, constraint.Value().Max() );
// ensure the spoke width is smaller than the pad minor size
spoke_w = std::min( spoke_w, spoke_max_allowed_w );
// Cannot create stubs having a width < zone min thickness
if( spoke_w < aZone->GetMinThickness() )
continue;