UINT32 GBlend::Blend( double pRatio, PPOINT DPoints, PBYTE DTypes, INT32 DLength )
{
Ratio = (INT32) (pRatio*0x10000000) ;
OPoints = DPoints ;
OTypes = DTypes ;
OLength = DLength ;
IPoints0 = S0Points ;
ITypes0 = S0Types ;
ILength0 = S0Length ;
IPoints1 = S1Points ;
ITypes1 = S1Types ;
ILength1 = S1Length ;
LPtr0 = LengthPtr0 ;
LPtr1 = LengthPtr1 ;
P00 = *IPoints0++ ; Type0 = *ITypes0++ ; ILength0-- ;
P10 = *IPoints1++ ; Type1 = *ITypes1++ ; ILength1-- ;
if ( !BlendPoint( PT_MOVETO, P00, P10 ) )
return FALSE ;
Length0 = 0 ; ReadPathStart0() ;
Length1 = 0 ; ReadPathStart1() ;
if ( Is1to1 )
{
if ( !BlendNtoN() )
return 0 ;
}
else
{
if ( !BlendMtoN() )
return 0 ;
}
return OTypes-DTypes ;
}
BOOL GBlend::Blend1to1()
{
if ( IsCurve(Type0) || IsCurve(Type1) )
{
if ( IsntCurve(Type0) )
{
P01.x = (2*P00.x+P03.x)/3 ;
P02.x = (P00.x+2*P03.x)/3 ;
P01.y = (2*P00.y+P03.y)/3 ;
P02.y = (P00.y+2*P03.y)/3 ;
}
if ( IsntCurve(Type1) )
{
P11.x = (2*P10.x+P13.x)/3 ;
P12.x = (P10.x+2*P13.x)/3 ;
P11.y = (2*P10.y+P13.y)/3 ;
P12.y = (P10.y+2*P13.y)/3 ;
}
if ( !BlendCurve( P01,P02,P03, P11,P12,P13 ) )
return FALSE ;
}
else if ( !BlendPoint( PT_LINETO, P03, P13 ) )
return FALSE ;
P00 = P03 ;
ReadPath0() ;
P10 = P13 ;
ReadPath1() ;
return TRUE ;
}
BOOL GBlend::BlendCurve( POINT P01,POINT P02,POINT P03, POINT P11,POINT P12,POINT P13 )
{
return BlendPoint( PT_BEZIERTO, P01, P11 ) &&
BlendPoint( PT_BEZIERTO, P02, P12 ) &&
BlendPoint( PT_BEZIERTO, P03, P13 ) ;
}
BOOL GBlend::BlendMtoN()
{
UINT32 t ;
while ( IsntEnd(Type0) || IsntEnd(Type1) )
{
if ( LPtr1==EndLengthPtr1-1 )
MatchLast( LPtr0, EndLengthPtr0, *LPtr1+Length1-Length0, Match0, Total0 ) ;
else
Match ( LPtr0, EndLengthPtr0, *LPtr1+Length1-Length0, Match0, Total0 ) ;
if ( LPtr0==EndLengthPtr0-1 )
MatchLast( LPtr1, EndLengthPtr1, *LPtr0+Length0-Length1, Match1, Total1 ) ;
else
Match ( LPtr1, EndLengthPtr1, *LPtr0+Length0-Length1, Match1, Total1 ) ;
if ( abs(Match0)<abs(Match1) )
{
if ( Total0!=1 )
{
Match0 += *LPtr1+Length1-Length0 ;
if ( IsntCurve(Type1) )
{
P11.x = (2*P10.x+P13.x)/3 ; P12.x = (P10.x+2*P13.x)/3 ;
P11.y = (2*P10.y+P13.y)/3 ; P12.y = (P10.y+2*P13.y)/3 ;
}
for ( t=2 ; t<=Total0 ; t++ )
{
if ( IsCurve(Type0) || IsCurve(Type1) )
{
if ( IsntCurve(Type0) )
{
P01.x = (2*P00.x+P03.x)/3 ; P02.x = (P00.x+2*P03.x)/3 ;
P01.y = (2*P00.y+P03.y)/3 ; P02.y = (P00.y+2*P03.y)/3 ;
}
Split( P10,P11,P12,P13, *LPtr0,Match0 ) ;
if ( !BlendCurve( P01,P02,P03, L1,L2,M ) )
return FALSE ;
P10 = M ;
P11 = R1 ;
P12 = R2 ;
}
else
{
P10.x += MulDiv(P13.x-P10.x,*LPtr0,Match0) ;
P10.y += MulDiv(P13.y-P10.y,*LPtr0,Match0) ;
if ( !BlendPoint( PT_LINETO, P03, P10 ) )
return FALSE ;
}
P00 = P03 ;
Match0 -= *LPtr0 ;
ReadPath0() ;
}
}
}
else
{
if ( Total1!=1 )
{
Match1 += *LPtr0+Length0-Length1 ;
if ( IsntCurve(Type0) )
{
P01.x = (2*P00.x+P03.x)/3 ; P02.x = (P00.x+2*P03.x)/3 ;
P01.y = (2*P00.y+P03.y)/3 ; P02.y = (P00.y+2*P03.y)/3 ;
}
for ( t=2 ; t<=Total1 ; t++ )
{
if ( IsCurve(Type0) || IsCurve(Type1) )
{
if ( IsntCurve(Type1) )
{
P11.x = (2*P10.x+P13.x)/3 ; P12.x = (P10.x+2*P13.x)/3 ;
P11.y = (2*P10.y+P13.y)/3 ; P12.y = (P10.y+2*P13.y)/3 ;
}
Split( P00,P01,P02,P03, *LPtr1,Match1 ) ;
if ( !BlendCurve( L1,L2,M, P11,P12,P13 ) )
return FALSE ;
P00 = M ;
P01 = R1 ;
P02 = R2 ;
}
else
{
P00.x += MulDiv(P03.x-P00.x,*LPtr1,Match1) ;
P00.y += MulDiv(P03.y-P00.y,*LPtr1,Match1) ;
if ( !BlendPoint( PT_LINETO, P00, P13 ) )
return FALSE ;
}
P10 = P13 ;
Match1 -= *LPtr1 ;
ReadPath1() ;
}
}
}
if ( !Blend1to1() )
return FALSE ;
} /* while */
return TRUE ;
}
