diff options
Diffstat (limited to 'src/common/image.cpp')
-rw-r--r-- | src/common/image.cpp | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/common/image.cpp b/src/common/image.cpp index 8a876e3..e3d1ef7 100644 --- a/src/common/image.cpp +++ b/src/common/image.cpp @@ -418,3 +418,44 @@ bool CImage::SavePNG(const std::string& fileName) return true; } +void CImage::SetDataPixels(void *pixels){ + + Uint8* srcPixels = static_cast<Uint8*> (pixels); + Uint8* resultPixels = static_cast<Uint8*> (m_data->surface->pixels); + + Uint32 pitch = m_data->surface->pitch; + + for(int line = 0; line < m_data->surface->h; ++line) { + Uint32 pos = line * pitch; + memcpy(&resultPixels[pos], &srcPixels[pos], pitch); + } +} + +void CImage::flipVertically(){ + + SDL_Surface* result = SDL_CreateRGBSurface( m_data->surface->flags, + m_data->surface->w, + m_data->surface->h, + m_data->surface->format->BytesPerPixel * 8, + m_data->surface->format->Rmask, + m_data->surface->format->Gmask, + m_data->surface->format->Bmask, + m_data->surface->format->Amask); + + assert(result != nullptr); + + Uint8* srcPixels = static_cast<Uint8*> (m_data->surface->pixels); + Uint8* resultPixels = static_cast<Uint8*> (result->pixels); + + Uint32 pitch = m_data->surface->pitch; + Uint32 pxLength = pitch*m_data->surface->h; + + for(int line = 0; line < m_data->surface->h; ++line) { + Uint32 pos = line * pitch; + memcpy(&resultPixels[pos], &srcPixels[(pxLength-pos)-pitch], pitch); + } + + SDL_FreeSurface(m_data->surface); + + m_data->surface = result; +}
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