Petr Kobalícek wrote:
> I'm trying to write my own rasterizer and I have problem with
> antigrain classes, this code:
>
> typedef agg::scanline_p8 AggScanlineP8;
> AggScanlineP8 slP8;
> slP8.reset_spans();
>
> will fail on segmentation fault (memory access exception) at position
> 0x0000000 (NULL) + something.
Yes, because m_covers and m_spans are initially empty, so the expressions &m_covers[0] and &m_spans[0] are invalid. You must call reset before using the scanline object. The protocol for scanline containers is described at the top of agg_scanline_u.h.
- Jim
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