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More natural limits for step size when sampling paramterized curve

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Kovid Goyal
2025-05-10 22:58:56 +05:30
parent ec5062ceb4
commit f2f914ed05
1 changed files with 4 additions and 3 deletions
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7
kitty/decorations.c
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@@ -700,8 +700,9 @@ draw_parametrized_curve_with_derivative(
Canvas *self, void *curve_data, double line_width, curve_func xfunc, curve_func yfunc, curve_func x_prime, curve_func y_prime, Canvas *self, void *curve_data, double line_width, curve_func xfunc, curve_func yfunc, curve_func x_prime, curve_func y_prime,
int x_offset, int yoffset, double thickness_fudge int x_offset, int yoffset, double thickness_fudge
) { ) {
double step = 1.0 / self->height; double larger_dim = fmax(self->height, self->width);
const double min_step = 1.0 / (100 * self->height); double step = 1.0 / larger_dim;
const double min_step = 1.0 / (100 * larger_dim), max_step = step;
line_width = fmax(1., line_width); line_width = fmax(1., line_width);
const double half_thickness = line_width / 2.0; const double half_thickness = line_width / 2.0;
const double distance_limit = half_thickness + thickness_fudge; const double distance_limit = half_thickness + thickness_fudge;
@@ -725,7 +726,7 @@ draw_parametrized_curve_with_derivative(
double dx = x_prime(curve_data, t), dy = y_prime(curve_data, t); double dx = x_prime(curve_data, t), dy = y_prime(curve_data, t);
double d = sqrt(dx * dx + dy * dy); double d = sqrt(dx * dx + dy * dy);
step = 1.0 / fmax(1e-6, d); step = 1.0 / fmax(1e-6, d);
step = fmax(min_step, fmin(step, 0.01)); step = fmax(min_step, fmin(step, max_step));
t = fmin(t + step, 1.0); t = fmin(t + step, 1.0);
} }
} }