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Kovid Goyal
2024-07-19 09:24:24 +05:30
parent 705df117fd
commit 3cf07e27a1
1 changed files with 2 additions and 2 deletions
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kitty/animation.c
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@@ -19,7 +19,7 @@ typedef struct StepsParameters {
} StepsParameters; } StepsParameters;
static const double bezier_epsilon = 1e-7; static const double bezier_epsilon = 1e-7;
static const int max_newton_iterations = 4; static const unsigned max_newton_iterations = 4;
typedef struct BezierParameters { typedef struct BezierParameters {
double ax, bx, cx, ay, by, cy, start_gradient, end_gradient, spline_samples[11]; double ax, bx, cx, ay, by, cy, start_gradient, end_gradient, spline_samples[11];
@@ -125,7 +125,7 @@ solve_curve_x(const BezierParameters *p, double x, double epsilon) {
// Perform a few iterations of Newton's method -- normally very fast. // Perform a few iterations of Newton's method -- normally very fast.
// See https://en.wikipedia.org/wiki/Newton%27s_method. // See https://en.wikipedia.org/wiki/Newton%27s_method.
double newton_epsilon = MIN(bezier_epsilon, epsilon); double newton_epsilon = MIN(bezier_epsilon, epsilon);
for (size_t i = 0; i < max_newton_iterations; i++) { for (unsigned i = 0; i < max_newton_iterations; i++) {
x2 = sample_curve_x(p, t2) - x; x2 = sample_curve_x(p, t2) - x;
if (fabs(x2) < newton_epsilon) return t2; if (fabs(x2) < newton_epsilon) return t2;
d2 = sample_derivative_x(p, t2); d2 = sample_derivative_x(p, t2);