Replace agg with skia

core/src/fxge/agg/agg23/agg_math.h

Index: core/src/fxge/agg/agg23/agg_math.h
diff --git a/core/src/fxge/agg/agg23/agg_math.h b/core/src/fxge/agg/agg23/agg_math.h
deleted file mode 100644
index 31e0daf3bb9a3de6bab012cf050c07bc19d99da3..0000000000000000000000000000000000000000
--- a/core/src/fxge/agg/agg23/agg_math.h
+++ /dev/null
@@ -1,63 +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
-//----------------------------------------------------------------------------
-// Bessel function (besj) was adapted for use in AGG library by Andy Wilk
-// Contact: castor.vulgaris@gmail.com
-//----------------------------------------------------------------------------
-#ifndef AGG_MATH_INCLUDED
-#define AGG_MATH_INCLUDED
-#include "agg_basics.h"
-namespace agg
-{
-const FX_FLOAT intersection_epsilon = 1.0e-30f;
-AGG_INLINE FX_FLOAT calc_point_location(FX_FLOAT x1, FX_FLOAT y1,
-                                        FX_FLOAT x2, FX_FLOAT y2,
-                                        FX_FLOAT x,  FX_FLOAT y)
-{
-    return FXSYS_Mul(x - x2, y2 - y1) - FXSYS_Mul(y - y2, x2 - x1);
-}
-AGG_INLINE FX_FLOAT calc_distance(FX_FLOAT x1, FX_FLOAT y1, FX_FLOAT x2, FX_FLOAT y2)
-{
-    FX_FLOAT dx = x2 - x1;
-    FX_FLOAT dy = y2 - y1;
-    return FXSYS_sqrt2(dx, dy);
-}
-AGG_INLINE FX_FLOAT calc_line_point_distance(FX_FLOAT x1, FX_FLOAT y1,
-        FX_FLOAT x2, FX_FLOAT y2,
-        FX_FLOAT x,  FX_FLOAT y)
-{
-    FX_FLOAT dx = x2 - x1;
-    FX_FLOAT dy = y2 - y1;
-    FX_FLOAT d = FXSYS_sqrt2(dx, dy);
-    if(d < intersection_epsilon) {
-        return calc_distance(x1, y1, x, y);
-    }
-    return FXSYS_MulDiv(x - x2, dy, d) - FXSYS_MulDiv(y - y2, dx, d);
-}
-AGG_INLINE bool calc_intersection(FX_FLOAT ax, FX_FLOAT ay, FX_FLOAT bx, FX_FLOAT by,
-                                  FX_FLOAT cx, FX_FLOAT cy, FX_FLOAT dx, FX_FLOAT dy,
-                                  FX_FLOAT* x, FX_FLOAT* y)
-{
-    FX_FLOAT num = FXSYS_Mul(ay - cy, dx - cx) - FXSYS_Mul(ax - cx, dy - cy);
-    FX_FLOAT den = FXSYS_Mul(bx - ax, dy - cy) - FXSYS_Mul(by - ay, dx - cx);
-    if (FXSYS_fabs(den) < intersection_epsilon) {
-        return false;
-    }
-    *x = ax + FXSYS_MulDiv(bx - ax, num, den);
-    *y = ay + FXSYS_MulDiv(by - ay, num, den);
-    return true;
-}
-}
-#endif