/* ---------------------------------------------------------------------------
* creates a new polygon from the old formats rectangle data
*/
PolygonTypePtr
CreateNewPolygonFromRectangle (LayerTypePtr Layer,
LocationType X1, LocationType Y1,
LocationType X2, LocationType Y2,
FlagType Flags)
{
PolygonTypePtr polygon = CreateNewPolygon (Layer, Flags);
if (!polygon)
return (polygon);
CreateNewPointInPolygon (polygon, X1, Y1);
CreateNewPointInPolygon (polygon, X2, Y1);
CreateNewPointInPolygon (polygon, X2, Y2);
CreateNewPointInPolygon (polygon, X1, Y2);
SetPolygonBoundingBox (polygon);
if (!Layer->polygon_tree)
Layer->polygon_tree = r_create_tree (NULL, 0, 0);
r_insert_entry (Layer->polygon_tree, (BoxTypePtr) polygon, 0);
return (polygon);
}
/*!
* \brief Creates a new polygon from the old formats rectangle data.
*/
PolygonType *
CreateNewPolygonFromRectangle (LayerType *Layer,
Coord X1, Coord Y1,
Coord X2, Coord Y2,
FlagType Flags)
{
PolygonType *polygon = CreateNewPolygon (Layer, Flags);
if (!polygon)
return (polygon);
CreateNewPointInPolygon (polygon, X1, Y1);
CreateNewPointInPolygon (polygon, X2, Y1);
CreateNewPointInPolygon (polygon, X2, Y2);
CreateNewPointInPolygon (polygon, X1, Y2);
SetPolygonBoundingBox (polygon);
if (!Layer->polygon_tree)
Layer->polygon_tree = r_create_tree (NULL, 0, 0);
r_insert_entry (Layer->polygon_tree, (BoxType *) polygon, 0);
return (polygon);
}
/* ---------------------------------------------------------------------------
* inserts a point into a polygon
*/
static void *
InsertPointIntoPolygon (LayerTypePtr Layer, PolygonTypePtr Polygon)
{
PointType save;
Cardinal n;
LineType line;
if (!Forcible)
{
/*
* first make sure adding the point is sensible
*/
line.Thickness = 0;
line.Point1 = Polygon->Points[prev_contour_point (Polygon, InsertAt)];
line.Point2 = Polygon->Points[InsertAt];
if (IsPointOnLine ((float) InsertX, (float) InsertY, 0.0, &line))
return (NULL);
}
/*
* second, shift the points up to make room for the new point
*/
ErasePolygon (Polygon);
r_delete_entry (Layer->polygon_tree, (BoxTypePtr) Polygon);
save = *CreateNewPointInPolygon (Polygon, InsertX, InsertY);
for (n = Polygon->PointN - 1; n > InsertAt; n--)
Polygon->Points[n] = Polygon->Points[n - 1];
/* Shift up indices of any holes */
for (n = 0; n < Polygon->HoleIndexN; n++)
if (Polygon->HoleIndex[n] > InsertAt ||
(InsertLast && Polygon->HoleIndex[n] == InsertAt))
Polygon->HoleIndex[n]++;
Polygon->Points[InsertAt] = save;
SetChangedFlag (true);
AddObjectToInsertPointUndoList (POLYGONPOINT_TYPE, Layer, Polygon,
&Polygon->Points[InsertAt]);
SetPolygonBoundingBox (Polygon);
r_insert_entry (Layer->polygon_tree, (BoxType *) Polygon, 0);
InitClip (PCB->Data, Layer, Polygon);
if (Forcible || !RemoveExcessPolygonPoints (Layer, Polygon))
{
DrawPolygon (Layer, Polygon, 0);
Draw ();
}
return (&Polygon->Points[InsertAt]);
}
/* ---------------------------------------------------------------------------
* copies data from one polygon to another
* 'Dest' has to exist
*/
PolygonType *
CopyPolygonLowLevel (PolygonType *Dest, PolygonType *Src)
{
Cardinal hole = 0;
Cardinal n;
for (n = 0; n < Src->PointN; n++)
{
if (hole < Src->HoleIndexN && n == Src->HoleIndex[hole])
{
CreateNewHoleInPolygon (Dest);
hole++;
}
CreateNewPointInPolygon (Dest, Src->Points[n].X, Src->Points[n].Y);
}
SetPolygonBoundingBox (Dest);
Dest->Flags = Src->Flags;
CLEAR_FLAG (NOCOPY_FLAGS, Dest);
return (Dest);
}
