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5496 | leency | 1 | /***************************************************************************/ |
2 | /* */ |
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3 | /* ftbbox.h */ |
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4 | /* */ |
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5 | /* FreeType exact bbox computation (specification). */ |
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6 | /* */ |
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7 | /* Copyright 1996-2001, 2003, 2007 by */ |
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8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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9 | /* */ |
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10 | /* This file is part of the FreeType project, and may only be used, */ |
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11 | /* modified, and distributed under the terms of the FreeType project */ |
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12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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13 | /* this file you indicate that you have read the license and */ |
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14 | /* understand and accept it fully. */ |
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15 | /* */ |
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16 | /***************************************************************************/ |
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17 | |||
18 | |||
19 | /*************************************************************************/ |
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20 | /* */ |
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21 | /* This component has a _single_ role: to compute exact outline bounding */ |
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22 | /* boxes. */ |
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23 | /* */ |
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24 | /* It is separated from the rest of the engine for various technical */ |
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25 | /* reasons. It may well be integrated in `ftoutln' later. */ |
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26 | /* */ |
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27 | /*************************************************************************/ |
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28 | |||
29 | |||
30 | #ifndef __FTBBOX_H__ |
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31 | #define __FTBBOX_H__ |
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32 | |||
33 | |||
34 | #include |
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35 | #include FT_FREETYPE_H |
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36 | |||
37 | #ifdef FREETYPE_H |
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38 | #error "freetype.h of FreeType 1 has been loaded!" |
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39 | #error "Please fix the directory search order for header files" |
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40 | #error "so that freetype.h of FreeType 2 is found first." |
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41 | #endif |
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42 | |||
43 | |||
44 | FT_BEGIN_HEADER |
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45 | |||
46 | |||
47 | /*************************************************************************/ |
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48 | /* */ |
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49 | /* |
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50 | /* outline_processing */ |
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51 | /* */ |
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52 | /*************************************************************************/ |
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53 | |||
54 | |||
55 | /*************************************************************************/ |
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56 | /* */ |
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57 | /* |
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58 | /* FT_Outline_Get_BBox */ |
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59 | /* */ |
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60 | /* |
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61 | /* Compute the exact bounding box of an outline. This is slower */ |
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62 | /* than computing the control box. However, it uses an advanced */ |
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63 | /* algorithm which returns _very_ quickly when the two boxes */ |
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64 | /* coincide. Otherwise, the outline Bézier arcs are traversed to */ |
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65 | /* extract their extrema. */ |
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66 | /* */ |
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67 | /* */ |
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68 | /* outline :: A pointer to the source outline. */ |
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69 | /* */ |
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70 | /* |
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71 | /* abbox :: The outline's exact bounding box. */ |
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72 | /* */ |
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73 | /* |
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74 | /* FreeType error code. 0~means success. */ |
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75 | /* */ |
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76 | FT_EXPORT( FT_Error ) |
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77 | FT_Outline_Get_BBox( FT_Outline* outline, |
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78 | FT_BBox *abbox ); |
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79 | |||
80 | |||
81 | /* */ |
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82 | |||
83 | |||
84 | FT_END_HEADER |
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85 | |||
86 | #endif /* __FTBBOX_H__ */ |
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87 | |||
88 | |||
89 | /* END */ |
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90 | |||
91 | |||
92 | /* Local Variables: */ |
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93 | /* coding: utf-8 */ |
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94 | /* End: */ |