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Improve anti-aliasing at small sizes for wavy underlines

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This commit is contained in:
Kovid Goyal 2018-09-04 15:48:01 +05:30
parent 053b9a786c
commit e36f1157cc
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 3 additions and 7 deletions
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10
kitty/fonts/render.py
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@ -117,8 +117,6 @@ def add_dline(buf, cell_width, position, thickness, cell_height):
def add_curl(buf, cell_width, position, thickness, cell_height): def add_curl(buf, cell_width, position, thickness, cell_height):
xfactor = 2.0 * pi / cell_width xfactor = 2.0 * pi / cell_width
yfactor = max(thickness, 2) yfactor = max(thickness, 2)
if position + yfactor >= cell_height:
position = cell_height - yfactor - 1
def clamp_y(y): def clamp_y(y):
return max(0, min(int(y), cell_height - 1)) return max(0, min(int(y), cell_height - 1))
@ -134,13 +132,11 @@ def add_curl(buf, cell_width, position, thickness, cell_height):
for x_exact in range(cell_width): for x_exact in range(cell_width):
y_exact = yfactor * cos(x_exact * xfactor) + position y_exact = yfactor * cos(x_exact * xfactor) + position
y_below = clamp_y(floor(y_exact)) y = clamp_y(ceil(y_exact))
y_above = clamp_y(ceil(y_exact))
x_before, x_after = map(clamp_x, (x_exact - 1, x_exact + 1)) x_before, x_after = map(clamp_x, (x_exact - 1, x_exact + 1))
for x in {x_before, x_exact, x_after}: for x in {x_before, x_exact, x_after}:
for y in {y_below, y_above}: dist = sqrt((x - x_exact)**2 + (y - y_exact)**2) / 2
dist = sqrt((x - x_exact)**2 + (y - y_exact)**2) / 2 add_intensity(x, y, dist)
add_intensity(x, y, dist)
def render_special( def render_special(