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#include <Image_AveragePixelInterpolation.ixx>
Image_AveragePixelInterpolation::Image_AveragePixelInterpolation() {}
Standard_Boolean Image_AveragePixelInterpolation::Interpolate(
const Handle(Image_Image)& aImage,
const Standard_Real FX, const Standard_Real FY,
const Standard_Integer LowX,
const Standard_Integer LowY,
const Standard_Integer UpX,
const Standard_Integer UpY,
Aspect_Pixel& aPixel ) const
{
if ( aImage->IsKind(STANDARD_TYPE(Image_DIndexedImage))) {
return Interpolate( Handle(Image_DIndexedImage)::DownCast( aImage ),
FX,FY,LowX,LowY,UpX,UpY,(Aspect_IndexPixel &)aPixel ) ;
}
else if ( aImage->IsKind(STANDARD_TYPE(Image_DColorImage))) {
return Interpolate( Handle(Image_DColorImage)::DownCast( aImage ),
FX,FY,LowX,LowY,UpX,UpY,(Aspect_ColorPixel &)aPixel ) ;
}
else {
return Image_PixelInterpolation::Interpolate( aImage,
FX,FY,LowX,LowY,UpX,UpY,aPixel ) ;
}
}
Standard_Boolean Image_AveragePixelInterpolation::Interpolate(
const Handle(Image_DColorImage)& aImage,
const Standard_Real FX, const Standard_Real FY,
const Standard_Integer LowX,
const Standard_Integer LowY,
const Standard_Integer UpX,
const Standard_Integer UpY,
Aspect_ColorPixel& aPixel ) const
{ Standard_Integer NX[3], NY[3] ;
Standard_Real NZ[3] ;
Standard_Real R,G,B ;
static Quantity_Color Col ;
Standard_Boolean SamePixels = 1 ;
if ( FX < 0. ) NX[0] = Standard_Integer(FX-0.5) ;
else NX[0] = Standard_Integer(FX+0.5) ;
if ( FY < 0. ) NY[0] = Standard_Integer(FY-0.5) ;
else NY[0] = Standard_Integer(FY+0.5) ;
if ( NX[0] < LowX || NX[0] > UpX ||
NY[0] < LowY || NY[0] > UpY ) {
return Standard_False ;
}
else if ( ( FX-NX[0] ) == 0. && ( FY-NY[0] ) == 0. ) {
aImage->Pixel( NX[0], NY[0], aPixel );
return Standard_True ;
}
else {
if ( ( FX-NX[0] ) >= 0. ) { NX[1] = NX[0]+1 ; NY[1] = NY[0] ; }
else { NX[1] = NX[0]-1 ; NY[1] = NY[0] ; }
if ( ( FY-NY[0] ) >= 0. ) { NX[2] = NX[0] ; NY[2] = NY[0]+1 ; }
else { NX[2] = NX[0] ; NY[2] = NY[0]-1 ; }
if ( NX[1] < LowX || NX[1] > UpX || NY[1] < LowY || NY[1] > UpY ||
NX[2] < LowX || NX[2] > UpX || NY[2] < LowY || NY[2] > UpY ) {
aImage->Pixel( NX[0], NY[0], aPixel );
}
else {
NZ[0] = aImage->Pixel( NX[0],NY[0] ).Value().Red() ;
NZ[1] = aImage->Pixel( NX[1],NY[1] ).Value().Red() ;
NZ[2] = aImage->Pixel( NX[2],NY[2] ).Value().Red() ;
if ( NZ[0] == NZ[1] && NZ[0] == NZ[2] ) {
R = NZ[0] ;
}
else {
R = ( NZ[0] + NZ[1] + NZ[2] ) / 3. ;
SamePixels = 0 ;
}
NZ[0] = aImage->Pixel( NX[0],NY[0] ).Value().Green() ;
NZ[1] = aImage->Pixel( NX[1],NY[1] ).Value().Green() ;
NZ[2] = aImage->Pixel( NX[2],NY[2] ).Value().Green() ;
if ( NZ[0] == NZ[1] && NZ[0] == NZ[2] ) {
G = NZ[0] ;
}
else {
G = ( NZ[0] + NZ[1] + NZ[2] ) / 3. ;
SamePixels = 0 ;
}
NZ[0] = aImage->Pixel( NX[0],NY[0] ).Value().Blue() ;
NZ[1] = aImage->Pixel( NX[1],NY[1] ).Value().Blue() ;
NZ[2] = aImage->Pixel( NX[2],NY[2] ).Value().Blue() ;
if ( NZ[0] == NZ[1] && NZ[0] == NZ[2] ) {
B = NZ[0] ;
}
else {
B = ( NZ[0] + NZ[1] + NZ[2] ) / 3. ;
SamePixels = 0 ;
}
if ( SamePixels ) {
aPixel.SetValue( aImage->Pixel( NX[0],NY[0] ).Value() );
}
else {
Col.SetValues( R, G, B, Quantity_TOC_RGB ) ;
aPixel.SetValue( Col ) ;
}
}
return Standard_True ;
}
}
Standard_Boolean Image_AveragePixelInterpolation::Interpolate(
const Handle(Image_DIndexedImage)& aImage,
const Standard_Real FX, const Standard_Real FY,
const Standard_Integer LowX,
const Standard_Integer LowY,
const Standard_Integer UpX,
const Standard_Integer UpY,
Aspect_IndexPixel& aPixel ) const
{ Standard_Integer NX[3], NY[3] ;
Standard_Real NZ[3] ;
if ( FX < 0. ) NX[0] = Standard_Integer(FX-0.5) ;
else NX[0] = Standard_Integer(FX+0.5) ;
if ( FY < 0. ) NY[0] = Standard_Integer(FY-0.5) ;
else NY[0] = Standard_Integer(FY+0.5) ;
if ( NX[0] < LowX || NX[0] > UpX ||
NY[0] < LowY || NY[0] > UpY ) {
return Standard_False ;
}
else if ( ( FX-NX[0] ) == 0. && ( FY-NY[0] ) == 0. ) {
aImage->Pixel( NX[0], NY[0], aPixel );
return Standard_True ;
}
else {
if ( ( FX-NX[0] ) >= 0. ) { NX[1] = NX[0]+1 ; NY[1] = NY[0] ; }
else { NX[1] = NX[0]-1 ; NY[1] = NY[0] ; }
if ( ( FY-NY[0] ) >= 0. ) { NX[2] = NX[0] ; NY[2] = NY[0]+1 ; }
else { NX[2] = NX[0] ; NY[2] = NY[0]-1 ; }
if ( NX[1] < LowX || NX[1] > UpX || NY[1] < LowY || NY[1] > UpY ||
NX[2] < LowX || NX[2] > UpX || NY[2] < LowY || NY[2] > UpY ) {
aImage->Pixel( NX[0], NY[0], aPixel );
}
else {
NZ[0] = aImage->Pixel( NX[0],NY[0] ).Value() ;
NZ[1] = aImage->Pixel( NX[1],NY[1] ).Value() ;
NZ[2] = aImage->Pixel( NX[2],NY[2] ).Value() ;
if ( NZ[0] == NZ[1] && NZ[0] == NZ[2] ) {
aPixel.SetValue( Standard_Integer( NZ[0] ) ) ;
}
else {
aPixel.SetValue( Standard_Integer((NZ[0]+NZ[1]+NZ[2])/3.) ) ;
}
}
return Standard_True ;
}
}
//##############################################################################
#ifdef OLD
Standard_Boolean Image_AveragePixelInterpolation::Interpolate(
const Handle(Image_DColorImage)& aImage,
const Standard_Real FX, const Standard_Real FY,
const Standard_Integer LowX,
const Standard_Integer LowY,
const Standard_Integer UpX,
const Standard_Integer UpY,
Aspect_ColorPixel& aPixel ) const
{ Standard_Integer NX = Standard_Integer(FX) ;
Standard_Integer NY = Standard_Integer(FY) ;
Standard_Integer X,Y ;
Standard_Real SD, SR, SG, SB, R, G, B ;
if ( NX < ( LowX-1 ) || NX > UpX ||
NY < ( LowY-1 ) || NY > UpY ) {
return Standard_False ;
}
else {
if ( FX < 0. ) NX-- ;
if ( FY < 0. ) NY-- ;
SR = SG = SB = SD = 0. ;
// (0,0)
X = NX ; Y = NY ;
if ( !( X < LowX || X > UpX ||
Y < LowY || Y > UpY ) ) {
aImage->Pixel( X,Y ).Value().Values( R, G, B, Quantity_TOC_RGB ) ;
SR += R ; SG += G ; SB += B ; SD += 1. ;
}
// (1,0)
X = NX+1 ; Y = NY ;
if ( !( X < LowX || X > UpX || Y < LowY || Y > UpY ) ) {
aImage->Pixel( X,Y ).Value().Values( R, G, B, Quantity_TOC_RGB ) ;
SR += R ; SG += G ; SB += B ; SD += 1. ;
}
// (0,1)
X = NX ; Y = NY+1 ;
if ( !( X < LowX || X > UpX ||
Y < LowY || Y > UpY ) ) {
aImage->Pixel( X,Y ).Value().Values( R, G, B, Quantity_TOC_RGB ) ;
SR += R ; SG += G ; SB += B ; SD += 1. ;
}
// (1,1)
X = NX+1 ; Y = NY+1 ;
if ( !( X < LowX || X > UpX ||
Y < LowY || Y > UpY ) ) {
aImage->Pixel( X,Y ).Value().Values( R, G, B, Quantity_TOC_RGB ) ;
SR += R ; SG += G ; SB += B ; SD += 1. ;
}
// Result
if ( SD != 0. ) {
SR /= SD ; SG /= SD ; SB /= SD ;
aPixel.SetValue( Quantity_Color( SR, SG, SB, Quantity_TOC_RGB ) ) ;
return Standard_True ;
}
else {
return Standard_False ;
}
}
}
Standard_Boolean Image_AveragePixelInterpolation::Interpolate(
const Handle(Image_DIndexedImage)& aImage,
const Standard_Real FX, const Standard_Real FY,
const Standard_Integer LowX,
const Standard_Integer LowY,
const Standard_Integer UpX,
const Standard_Integer UpY,
Aspect_IndexPixel& aPixel ) const
{ Standard_Integer NX = Standard_Integer(FX) ;
Standard_Integer NY = Standard_Integer(FY) ;
Standard_Integer X,Y ;
Standard_Real SD, SP ;
if ( NX < ( LowX-1 ) || NX > UpX ||
NY < ( LowY-1 ) || NY > UpY ) {
return Standard_False ;
}
else {
if ( FX < 0. ) NX-- ;
if ( FY < 0. ) NY-- ;
SP = SD = 0. ;
// (0,0)
X = NX ; Y = NY ;
if ( !( X < LowX || X > UpX ||
Y < LowY || Y > UpY ) ) {
SP += aImage->Pixel( X,Y ).Value() ; SD += 1. ;
}
// (1,0)
X = NX+1 ; Y = NY ;
if ( !( X < LowX || X > UpX ||
Y < LowY || Y > UpY ) ) {
SP += aImage->Pixel( X,Y ).Value() ; SD += 1. ;
}
// (0,1)
X = NX ; Y = NY+1 ;
if ( !( X < LowX || X > UpX ||
Y < LowY || Y > UpY ) ) {
SP += aImage->Pixel( X,Y ).Value() ; SD += 1. ;
}
// (1,1)
X = NX+1 ; Y = NY+1 ;
if ( !( X < LowX || X > UpX ||
Y < LowY || Y > UpY ) ) {
SP += aImage->Pixel( X,Y ).Value() ; SD += 1. ;
}
// Result
if ( SD != 0. ) {
SP /= SD ;
aPixel.SetValue( Standard_Integer(SP+0.5) ) ;
return Standard_True ;
}
else {
return Standard_False ;
}
}
}
#endif
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