diff options
author | Tom Sepez <tsepez@chromium.org> | 2015-06-16 16:29:44 -0700 |
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committer | Tom Sepez <tsepez@chromium.org> | 2015-06-16 16:29:44 -0700 |
commit | 2ca8fcbc8a7a3ef6adfac154c47068c1696205d0 (patch) | |
tree | de3f825c75b1b92908825f68af8a4e7146cf97fd /core/src/fxge/agg/agg23/agg_clip_liang_barsky.h | |
parent | ea44bd064a86679a47a7265020f997d6e3b88336 (diff) | |
download | pdfium-chromium/2438.tar.xz |
Separate agg-authored code from fx-authored code.chromium/2439chromium/2438chromium/2437chromium/2436chromium/2435
Creates a separate library so we can apply less-strict warnings to
the code we can't change from upstream vs. the code we can change,
reducing noise in the standalone build.
Remove needless foo.{cpp,h} files that merely perform indirection
via #include "some_other_path/foo.{cpp,h}".
BUG=pdfium:166
R=brucedawson@chromium.org, thestig@chromium.org
Review URL: https://codereview.chromium.org/1152743007.
Diffstat (limited to 'core/src/fxge/agg/agg23/agg_clip_liang_barsky.h')
-rw-r--r-- | core/src/fxge/agg/agg23/agg_clip_liang_barsky.h | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/core/src/fxge/agg/agg23/agg_clip_liang_barsky.h b/core/src/fxge/agg/agg23/agg_clip_liang_barsky.h deleted file mode 100644 index cfc4c91f60..0000000000 --- a/core/src/fxge/agg/agg23/agg_clip_liang_barsky.h +++ /dev/null @@ -1,125 +0,0 @@ - -//---------------------------------------------------------------------------- -// Anti-Grain Geometry - Version 2.3 -// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com) -// -// Permission to copy, use, modify, sell and distribute this software -// is granted provided this copyright notice appears in all copies. -// This software is provided "as is" without express or implied -// warranty, and with no claim as to its suitability for any purpose. -// -//---------------------------------------------------------------------------- -// Contact: mcseem@antigrain.com -// mcseemagg@yahoo.com -// http://www.antigrain.com -//---------------------------------------------------------------------------- -// -// Liang-Barsky clipping -// -//---------------------------------------------------------------------------- -#ifndef AGG_CLIP_LIANG_BARSKY_INCLUDED -#define AGG_CLIP_LIANG_BARSKY_INCLUDED -#include "agg_basics.h" -namespace agg -{ -template<class T> -inline unsigned clipping_flags(T x, T y, const rect_base<T>& clip_box) -{ - return (x > clip_box.x2) | - ((y > clip_box.y2) << 1) | - ((x < clip_box.x1) << 2) | - ((y < clip_box.y1) << 3); -} -template<class T> -inline unsigned clip_liang_barsky(T x1, T y1, T x2, T y2, - const rect_base<T>& clip_box, - T* x, T* y) -{ - const FX_FLOAT nearzero = 1e-30f; - FX_FLOAT deltax = (FX_FLOAT)(x2 - x1); - FX_FLOAT deltay = (FX_FLOAT)(y2 - y1); - unsigned np = 0; - if(deltax == 0) { - deltax = (x1 > clip_box.x1) ? -nearzero : nearzero; - } - FX_FLOAT xin, xout; - if(deltax > 0) { - xin = (FX_FLOAT)clip_box.x1; - xout = (FX_FLOAT)clip_box.x2; - } else { - xin = (FX_FLOAT)clip_box.x2; - xout = (FX_FLOAT)clip_box.x1; - } - FX_FLOAT tinx = FXSYS_Div(xin - x1, deltax); - if(deltay == 0) { - deltay = (y1 > clip_box.y1) ? -nearzero : nearzero; - } - FX_FLOAT yin, yout; - if(deltay > 0) { - yin = (FX_FLOAT)clip_box.y1; - yout = (FX_FLOAT)clip_box.y2; - } else { - yin = (FX_FLOAT)clip_box.y2; - yout = (FX_FLOAT)clip_box.y1; - } - FX_FLOAT tiny = FXSYS_Div(yin - y1, deltay); - FX_FLOAT tin1, tin2; - if (tinx < tiny) { - tin1 = tinx; - tin2 = tiny; - } else { - tin1 = tiny; - tin2 = tinx; - } - if(tin1 <= 1.0f) { - if(0 < tin1) { - *x++ = (T)xin; - *y++ = (T)yin; - ++np; - } - if(tin2 <= 1.0f) { - FX_FLOAT toutx = FXSYS_Div(xout - x1, deltax); - FX_FLOAT touty = FXSYS_Div(yout - y1, deltay); - FX_FLOAT tout1 = (toutx < touty) ? toutx : touty; - if(tin2 > 0 || tout1 > 0) { - if(tin2 <= tout1) { - if(tin2 > 0) { - if(tinx > tiny) { - *x++ = (T)xin; - *y++ = (T)(y1 + FXSYS_Mul(deltay, tinx)); - } else { - *x++ = (T)(x1 + FXSYS_Mul(deltax, tiny)); - *y++ = (T)yin; - } - ++np; - } - if(tout1 < 1.0f) { - if(toutx < touty) { - *x++ = (T)xout; - *y++ = (T)(y1 + FXSYS_Mul(deltay, toutx)); - } else { - *x++ = (T)(x1 + FXSYS_Mul(deltax, touty)); - *y++ = (T)yout; - } - } else { - *x++ = x2; - *y++ = y2; - } - ++np; - } else { - if(tinx > tiny) { - *x++ = (T)xin; - *y++ = (T)yout; - } else { - *x++ = (T)xout; - *y++ = (T)yin; - } - ++np; - } - } - } - } - return np; -} -} -#endif |