| 1 | /* Libart_LGPL - library of basic graphic primitives |
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| 2 | * Copyright (C) 1998 Raph Levien |
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| 3 | * |
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| 4 | * This library is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Library General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * This library is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Library General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Library General Public |
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| 15 | * License along with this library; if not, write to the |
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| 16 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 17 | * Boston, MA 02111-1307, USA. |
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| 18 | */ |
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| 19 | |
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| 20 | #ifndef __ART_SVP_RENDER_AA_H__ |
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| 21 | #define __ART_SVP_RENDER_AA_H__ |
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| 22 | |
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| 23 | /* The spiffy antialiased renderer for sorted vector paths. */ |
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| 24 | |
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| 25 | #ifdef LIBART_COMPILATION |
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| 26 | #include "art_svp.h" |
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| 27 | #else |
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| 28 | #include <libart_lgpl/art_svp.h> |
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| 29 | #endif |
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| 30 | |
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| 31 | #ifdef __cplusplus |
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| 32 | extern "C" { |
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| 33 | #endif /* __cplusplus */ |
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| 34 | |
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| 35 | typedef struct _ArtSVPRenderAAStep ArtSVPRenderAAStep; |
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| 36 | typedef struct _ArtSVPRenderAAIter ArtSVPRenderAAIter; |
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| 37 | |
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| 38 | struct _ArtSVPRenderAAStep { |
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| 39 | int x; |
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| 40 | int delta; /* stored with 16 fractional bits */ |
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| 41 | }; |
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| 42 | |
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| 43 | ArtSVPRenderAAIter * |
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| 44 | art_svp_render_aa_iter (const ArtSVP *svp, |
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| 45 | int x0, int y0, int x1, int y1); |
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| 46 | |
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| 47 | void |
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| 48 | art_svp_render_aa_iter_step (ArtSVPRenderAAIter *iter, int *p_start, |
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| 49 | ArtSVPRenderAAStep **p_steps, int *p_n_steps); |
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| 50 | |
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| 51 | void |
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| 52 | art_svp_render_aa_iter_done (ArtSVPRenderAAIter *iter); |
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| 53 | |
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| 54 | void |
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| 55 | art_svp_render_aa (const ArtSVP *svp, |
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| 56 | int x0, int y0, int x1, int y1, |
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| 57 | void (*callback) (void *callback_data, |
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| 58 | int y, |
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| 59 | int start, |
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| 60 | ArtSVPRenderAAStep *steps, int n_steps), |
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| 61 | void *callback_data); |
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| 62 | |
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| 63 | #ifdef __cplusplus |
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| 64 | } |
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| 65 | #endif /* __cplusplus */ |
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| 66 | |
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| 67 | #endif /* __ART_SVP_RENDER_AA_H__ */ |
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