bool LIB_ARC::HitTest( wxPoint aPosition, int aThreshold, const TRANSFORM& aTransform )
{
if( aThreshold < 0 )
aThreshold = GetPenSize() / 2;
// TODO: use aTransMat to calculates parameters
wxPoint relativePosition = aPosition;
NEGATE( relativePosition.y ); // reverse Y axis
int distance = wxRound( EuclideanNorm( TwoPointVector( m_Pos, relativePosition ) ) );
if( abs( distance - m_Radius ) > aThreshold )
return false;
// We are on the circle, ensure we are only on the arc, i.e. between
// m_ArcStart and m_ArcEnd
wxPoint startEndVector = TwoPointVector( m_ArcStart, m_ArcEnd);
wxPoint startRelativePositionVector = TwoPointVector( m_ArcStart, relativePosition );
wxPoint centerStartVector = TwoPointVector( m_Pos, m_ArcStart );
wxPoint centerEndVector = TwoPointVector( m_Pos, m_ArcEnd );
wxPoint centerRelativePositionVector = TwoPointVector( m_Pos, relativePosition );
// Compute the cross product to check if the point is in the sector
int crossProductStart = CrossProduct( centerStartVector, centerRelativePositionVector );
int crossProductEnd = CrossProduct( centerEndVector, centerRelativePositionVector );
// The cross products need to be exchanged, depending on which side the center point
// relative to the start point to end point vector lies
if( CrossProduct( startEndVector, startRelativePositionVector ) < 0 )
{
EXCHG( crossProductStart, crossProductEnd );
}
// When the cross products have a different sign, the point lies in sector
// also check, if the reference is near start or end point
return HitTestPoints( m_ArcStart, relativePosition, MINIMUM_SELECTION_DISTANCE ) ||
HitTestPoints( m_ArcEnd, relativePosition, MINIMUM_SELECTION_DISTANCE ) ||
( crossProductStart <= 0 && crossProductEnd >= 0 );
}
bool GERBER_DRAW_ITEM::HitTest( const wxPoint& aRefPos )
{
// calculate aRefPos in XY gerber axis:
wxPoint ref_pos = GetXYPosition( aRefPos );
// TODO: a better analyze of the shape (perhaps create a D_CODE::HitTest for flashed items)
int radius = std::min( m_Size.x, m_Size.y ) >> 1;
if( m_Flashed )
return HitTestPoints( m_Start, ref_pos, radius );
else
return TestSegmentHit( ref_pos, m_Start, m_End, radius );
}
bool GERBER_DRAW_ITEM::HitTest( const wxPoint& aRefPos ) const
{
// In case the item has a very tiny width defined, allow it to be selected
const int MIN_HIT_TEST_RADIUS = Millimeter2iu( 0.01 );
// calculate aRefPos in XY gerber axis:
wxPoint ref_pos = GetXYPosition( aRefPos );
SHAPE_POLY_SET poly;
switch( m_Shape )
{
case GBR_POLYGON:
poly = m_Polygon;
return poly.Contains( VECTOR2I( ref_pos ), 0 );
case GBR_SPOT_POLY:
poly = GetDcodeDescr()->m_Polygon;
poly.Move( m_Start );
return poly.Contains( VECTOR2I( ref_pos ), 0 );
case GBR_SPOT_RECT:
return GetBoundingBox().Contains( aRefPos );
case GBR_ARC:
{
double radius = GetLineLength( m_Start, m_ArcCentre );
VECTOR2D test_radius = VECTOR2D( ref_pos ) - VECTOR2D( m_ArcCentre );
int size = ( ( m_Size.x < MIN_HIT_TEST_RADIUS ) ? MIN_HIT_TEST_RADIUS
: m_Size.x );
// Are we close enough to the radius?
bool radius_hit = ( std::fabs( test_radius.EuclideanNorm() - radius) < size );
if( radius_hit )
{
// Now check that we are within the arc angle
VECTOR2D start = VECTOR2D( m_Start ) - VECTOR2D( m_ArcCentre );
VECTOR2D end = VECTOR2D( m_End ) - VECTOR2D( m_ArcCentre );
double start_angle = NormalizeAngleRadiansPos( start.Angle() );
double end_angle = NormalizeAngleRadiansPos( end.Angle() );
if( m_Start == m_End )
{
start_angle = 0;
end_angle = 2 * M_PI;
}
else if( end_angle < start_angle )
{
end_angle += 2 * M_PI;
}
double test_angle = NormalizeAngleRadiansPos( test_radius.Angle() );
return ( test_angle > start_angle && test_angle < end_angle );
}
return false;
}
case GBR_SPOT_MACRO:
// Aperture macro polygons are already in absolute coordinates
auto p = GetDcodeDescr()->GetMacro()->GetApertureMacroShape( this, m_Start );
for( int i = 0; i < p->OutlineCount(); ++i )
{
if( p->Contains( VECTOR2I( aRefPos ), i ) )
return true;
}
return false;
}
// TODO: a better analyze of the shape (perhaps create a D_CODE::HitTest for flashed items)
int radius = std::min( m_Size.x, m_Size.y ) >> 1;
if( radius < MIN_HIT_TEST_RADIUS )
radius = MIN_HIT_TEST_RADIUS;
if( m_Flashed )
return HitTestPoints( m_Start, ref_pos, radius );
else
return TestSegmentHit( ref_pos, m_Start, m_End, radius );
}
