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Dxf importer: fix issue when importing some "degenerated" splines. 

(From master, commit 8f3e8cf)
Sometimes a dxf curve is a "degenerated" bezier curve having only 3 points.
(a control point is at same location as a end point)
This commit fix incorrect import of these curves.

Fixes #3845
https://gitlab.com/kicad/code/kicad/issues/3845
This commit is contained in:
jean-pierre charras 2020-02-03 12:49:16 +01:00
parent cb711a648f
commit dabd80fe4c
1 changed files with 10 additions and 2 deletions
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12
pcbnew/import_gfx/dxf_import_plugin.cpp
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@ -1040,7 +1040,7 @@ void DXF_IMPORT_PLUGIN::insertSpline( int aWidth )
if( startpoint != endpoint )
{
m_internalImporter.AddLine( startpoint, endpoint );
m_internalImporter.AddLine( startpoint, endpoint, aWidth );
updateImageLimits( startpoint );
updateImageLimits( endpoint );
@ -1067,12 +1067,20 @@ void DXF_IMPORT_PLUGIN::insertSpline( int aWidth )
// Each Bezier curve uses 4 vertices (a start point, 2 control points and a end point).
// So we can have more than one Bezier curve ( there are one curve each four vertices)
// However, one can have one Bezier curve with end point = ctrl point 2, having only 3
// defined points in list.
for( unsigned ii = 0; ii < coords.size(); ii += 8 )
{
VECTOR2D start( mapX( coords[ii] ), mapY( coords[ii+1] ) );
VECTOR2D bezierControl1( mapX( coords[ii+2] ), mapY( coords[ii+3] ) );
VECTOR2D bezierControl2( mapX( coords[ii+4] ), mapY( coords[ii+5] ) );
VECTOR2D end( mapX( coords[ii+6] ), mapY( coords[ii+7] ) );
VECTOR2D end;
if( ii+7 < coords.size() )
end = VECTOR2D( mapX( coords[ii+6] ), mapY( coords[ii+7] ) );
else
end = bezierControl2;
m_internalImporter.AddSpline( start, bezierControl1, bezierControl2, end , aWidth );
}
#endif