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Depth neutral implementation of CSDL_Ext::rotate01 and CSDL_Ext::hFlip.

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This commit is contained in:
Frank Zago
2009-05-17 02:43:36 +00:00
parent ce9b7b48ca
commit bf562bdb77
1 changed files with 18 additions and 62 deletions
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80
SDL_Extensions.cpp
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@@ -257,80 +257,36 @@ inline void CSDL_Ext::SDL_PutPixel(SDL_Surface *ekran, const int & x, const int
SDL_UpdateRect(ekran, x, y, 1, 1);
}
///**************/
///Reverses the toRot surface by the vertical axis
///**************/
// Vertical flip
SDL_Surface * CSDL_Ext::rotate01(SDL_Surface * toRot)
{
SDL_Surface * ret = SDL_ConvertSurface(toRot, toRot->format, toRot->flags);
//SDL_SetColorKey(ret, SDL_SRCCOLORKEY, toRot->format->colorkey);
if(toRot->format->BytesPerPixel!=1)
{
for(int i=0; i<ret->w; ++i)
{
for(int j=0; j<ret->h; ++j)
{
{
Uint8 *p = (Uint8 *)toRot->pixels + j * toRot->pitch + (ret->w - i - 1) * toRot->format->BytesPerPixel;
CSDL_Ext::SDL_PutPixelWithoutRefresh(ret, i, j, p[2], p[1], p[0]);
}
}
}
}
else
{
for(int i=0; i<ret->w; ++i)
{
for(int j=0; j<ret->h; ++j)
{
{
Uint8 *p = (Uint8 *)toRot->pixels + j * toRot->pitch + (ret->w - i - 1) * toRot->format->BytesPerPixel;
(*((Uint8*)ret->pixels + j*ret->pitch + i*ret->format->BytesPerPixel)) = *p;
}
const int bpl = ret->pitch;
const int bpp = ret->format->BytesPerPixel;
for(int i=0; i<ret->h; i++) {
char *src = (char *)toRot->pixels + i*bpl;
char *dst = (char *)ret->pixels + i*bpl;
for(int j=0; j<ret->w; j++) {
for (int k=0; k<bpp; k++) {
dst[j*bpp + k] = src[(ret->w-j-1)*bpp + k];
}
}
}
return ret;
}
// Horizontal flip
SDL_Surface * CSDL_Ext::hFlip(SDL_Surface * toRot)
{
SDL_Surface * ret = SDL_ConvertSurface(toRot, toRot->format, toRot->flags);
//SDL_SetColorKey(ret, SDL_SRCCOLORKEY, toRot->format->colorkey);
if(ret->format->BytesPerPixel!=1)
{
for(int i=0; i<ret->w; ++i)
{
for(int j=0; j<ret->h; ++j)
{
{
Uint8 *p = (Uint8 *)toRot->pixels + (ret->h - j -1) * toRot->pitch + i * toRot->format->BytesPerPixel;
//int k=2;
/*
#if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
CSDL_Ext::SDL_PutPixelWithoutRefresh(ret, i, j, p[0], p[1], p[2]);
#else
*/
CSDL_Ext::SDL_PutPixelWithoutRefresh(ret, i, j, p[2], p[1], p[0]);
//#endif
}
}
}
}
else
{
for(int i=0; i<ret->w; ++i)
{
for(int j=0; j<ret->h; ++j)
{
{
Uint8 *p = (Uint8 *)toRot->pixels + (ret->h - j -1) * toRot->pitch + i * toRot->format->BytesPerPixel;
(*((Uint8*)ret->pixels + j*ret->pitch + i*ret->format->BytesPerPixel)) = *p;
}
}
}
int bpl = ret->pitch;
for(int i=0; i<ret->h; i++) {
memcpy((char *)ret->pixels + i*bpl, (char *)toRot->pixels + (ret->h-i-1)*bpl, bpl);
}
return ret;
};