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[spline] Simplify code

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This commit is contained in:
Behdad Esfahbod 2008-12-28 01:22:40 -05:00
parent 8672178bf6
commit efe4d2ce99
1 changed files with 9 additions and 10 deletions
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19
src/cairo-spline.c
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@ -263,24 +263,23 @@ _cairo_spline_bound (cairo_spline_add_point_func_t add_point_func,
*/
#define ADD(t0) \
if (0 < (t0) && (t0) < 1) \
t[t_num++] = (t0);
{ \
double _t0 = (t0); \
if (0 < _t0 && _t0 < 1) \
t[t_num++] = _t0; \
}
#define FIND_EXTREMES(a,b,c) \
{ \
double delta = b * b - a * c; \
if (a == 0) { \
double t0 = -c / (2*b); \
ADD (t0); \
ADD (-c / (2*b)); \
} else if (delta > 0) { \
double sqrt_delta = sqrt (delta); \
double t1 = (-b - sqrt_delta) / a; \
double t2 = (-b + sqrt_delta) / a; \
ADD (t1); \
ADD (t2); \
ADD ((-b - sqrt_delta) / a); \
ADD ((-b + sqrt_delta) / a); \
} else if (delta == 0) { \
double t0 = -b / a; \
ADD (t0); \
ADD (-b / a); \
} \
}