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Woodsman

SDL: saving bmp from surface

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Well, as you can probably tell, the purpose of this function is to rotate a 75x75 pixel image surface and then render it to a surface that is 360*75x75 in size. It seems to just junk out in the middle of it for some reason. Any ideas why?
void BSDL::RotateAndSaveImg(char* filename) {
    const int sprite_size = 75;
    SDL_Surface *surface =
        SDL_CreateRGBSurface (SDL_SWSURFACE, 360*sprite_size, sprite_size, 32, 0x000000ff,
			      0x0000ff00, 0x00ff0000, 0xff000000);

    SDL_Surface *rotated_picture;
    //rotated_picture =	rotozoomSurface(image, (double)angle, 1, smooth);


    SDL_Rect dest;
    dest.y = 0;
    for(int a = 0; a<360; a++) {
        dest.x = sprite_size * a;
        rotated_picture = rotozoomSurface(image, (double)a, 1, 1);
        SDL_BlitSurface(rotated_picture, NULL, surface, &dest);
        SDL_FreeSurface(rotated_picture);
    }


    //int SDL_SaveBMP(SDL_Surface *surface, const char *file)

    SDL_SaveBMP(surface, filename);
}
[edited by - Woodsman on June 5, 2004 6:35:24 PM]

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my bet is that the create surface fails.

Did you notice you''re allocating 360*75*75*4=8 megabytes?

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Wow. Yeah, I was evidently looking in the very wrong places. In fact it shouldn't have been 360 at all anyway, but thanks a lot. Now I simply have to get it to actually print the surface (it saves as black at present.) Thanks again.

EDIT: Everything working like a charm. Cheers.

[edited by - woodsman on June 5, 2004 6:55:51 PM]

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