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-rw-r--r--core/src/fxge/agg/agg23/agg_clip_liang_barsky.h125
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