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- migliorie nella funzione GetImage di Scene.
This commit is contained in:
Dario Sassi
2025-11-03 15:14:57 +01:00
parent 1cf8e7e965
commit dbd0c9a739
1 changed files with 21 additions and 19 deletions
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SceneImage.cpp
+21 -19
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@@ -128,26 +128,28 @@ Scene::GetImage( int nShowMode, Color colBackTop, Color colBackBottom,
pDib = FreeImage_ConvertTo24Bits( pTmpDib) ;
FreeImage_Unload( pTmpDib) ;
// Eseguo scalatura della bitmap
int nLeft ; int nTop ;
int nRight ; int nBottom ;
if ( dCoeffW / nN >= dCoeffH / nM) {
nLeft = 0 ;
nRight = nN * nWidth - 1 ;
int nDeltaH = nM * nHeight - nN * int( nDestHeight / dCoeffW) ;
nTop = nDeltaH / 2 ;
nBottom = nM * nHeight - nTop - 1 ;
// Se necessario, eseguo scalatura della bitmap
if ( nDestWidth != nN * nWidth || nDestHeight != nM * nHeight) {
int nLeft ; int nTop ;
int nRight ; int nBottom ;
if ( dCoeffW / nN >= dCoeffH / nM) {
nLeft = 0 ;
nRight = nN * nWidth - 1 ;
int nDeltaH = nM * nHeight - nN * int( nDestHeight / dCoeffW) ;
nTop = nDeltaH / 2 ;
nBottom = nM * nHeight - nTop - 1 ;
}
else {
nTop = 0 ;
nBottom = nM * nHeight - 1 ;
int nDeltaW = nN * nWidth - nM * int( nDestWidth / dCoeffH) ;
nLeft = nDeltaW / 2 ;
nRight = nN * nWidth - nLeft - 1 ;
}
FIBITMAP* pTmp2Dib = pDib ;
pDib = FreeImage_RescaleRect( pTmp2Dib, nDestWidth, nDestHeight, nLeft, nTop, nRight, nBottom, FILTER_CATMULLROM) ;
FreeImage_Unload( pTmp2Dib) ;
}
else {
nTop = 0 ;
nBottom = nM * nHeight - 1 ;
int nDeltaW = nN * nWidth - nM * int( nDestWidth / dCoeffH) ;
nLeft = nDeltaW / 2 ;
nRight = nN * nWidth - nLeft - 1 ;
}
FIBITMAP* pTmp2Dib = pDib ;
pDib = FreeImage_RescaleRect( pTmp2Dib, nDestWidth, nDestHeight, nLeft, nTop, nRight, nBottom, FILTER_BSPLINE) ;
FreeImage_Unload( pTmp2Dib) ;
// Salvataggio
int nFlag = 0 ;