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| author | inmarket <andrewh@inmarket.com.au> | 2013-09-06 12:29:06 +1000 |
|---|---|---|
| committer | inmarket <andrewh@inmarket.com.au> | 2013-09-06 12:29:06 +1000 |
| commit | 6e4437255b603b5b25360481507099dd9b92f942 (patch) | |
| tree | e31ce6c06f5f155dd26ce41b9cc76cff945b2f40 /include/gmisc | |
| parent | 439426667990b90f76f759ae8f993215c16770cd (diff) | |
| download | uGFX-6e4437255b603b5b25360481507099dd9b92f942.tar.gz uGFX-6e4437255b603b5b25360481507099dd9b92f942.tar.bz2 uGFX-6e4437255b603b5b25360481507099dd9b92f942.zip | |
GDISP revamp - stage 1
New low level driver interface: Only Win32 ported currently
Significant reduction in GDISP stack usage
Improved performance particularly for native streaming drivers
New circle, ellipse, arc routines (draw and fill) that are significantly more efficient and don't overdraw
New arc draw algorithm that measures angles correctly.
New arc fill algorithm for that actually works without overdrawing or gaps.
Much more to come...
Diffstat (limited to 'include/gmisc')
| -rw-r--r-- | include/gmisc/gmisc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/gmisc/gmisc.h b/include/gmisc/gmisc.h index 998dda50..5943e642 100644 --- a/include/gmisc/gmisc.h +++ b/include/gmisc/gmisc.h @@ -51,6 +51,7 @@ typedef int32_t fixed; */ #define FIXED(x) ((fixed)(x)<<16) /* @< integer to fixed */ #define NONFIXED(x) ((x)>>16) /* @< fixed to integer */ +#define FIXED0_5 32768 /* @< 0.5 as a fixed (used for rounding) */ #define FP2FIXED(x) ((fixed)((x)*65536.0)) /* @< floating point to fixed */ #define FIXED2FP(x) ((double)(x)/65536.0) /* @< fixed to floating point */ /* @} */ |