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box-drawing: LIGHT ARC: pixel-perfect

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At least in odd-sized cells, with a thickness of 1 pixel.
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Daniel Eklöf 2021-01-01 12:47:57 +01:00
parent c120e0c84f
commit 56e947bb44
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GPG key ID: 5BBD4992C116573F
1 changed files with 26 additions and 24 deletions
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50
box-drawing.c
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@ -1067,59 +1067,61 @@ draw_box_drawings_light_arc(wchar_t wc, uint8_t *buf, int width, int height, int
if (wc == L'╭') { if (wc == L'╭') {
start_x = hw; start_x = hw;
start_y = height - 1; start_y = height - 1;
end_x = width - 1; end_x = width - 1;
end_y = hh; end_y = hh;
c1_x = hw; c1_x = hw;
c1_y = round(3. * height / 4.); c1_y = 3. * height / 4.;
c2_x = hw; c2_x = hw;
c2_y = hh + 1; c2_y = hh;
} else if (wc == L'╮') { } else if (wc == L'╮') {
start_x = 0; start_x = hw;
start_y = hh; start_y = height - 1;
end_x = hw;
end_y = height - 1;
c1_x = hw + 1; end_x = 0;
c1_y = hh + 1; end_y = hh;
c2_x = hw + 1; c1_x = hw;
c2_y = round(3. * height / 4.); c1_y = 3. * height / 4.;
c2_x = hw;
c2_y = hh;
} else if (wc == L'╯') { } else if (wc == L'╯') {
start_x = 0; start_x = hw;
start_y = hh; start_y = 0;
end_x = hw;
end_y = 0;
c1_x = hw + 2; end_x = 0;
c1_y = hh + 1; end_y = hh;
c2_x = hw + 1; c1_x = hw;
c2_y = round(height / 4.); c1_y = height / 4.;
c2_x = hw;
c2_y = hh;
} else { } else {
assert(wc == L'╰'); assert(wc == L'╰');
start_x = hw; start_x = hw;
start_y = 0; start_y = 0;
end_x = width - 1; end_x = width - 1;
end_y = hh; end_y = hh;
c1_x = hw; c1_x = hw;
c1_y = round(height / 4.); c1_y = height / 4.;
c2_x = hw; c2_x = hw;
c2_y = hh + 1; c2_y = hh;
} }
LOG_INFO("%f, %f", round(3. * height / 4.), round(height / 4.));
int num_samples = height * 4; int num_samples = height * 4;
for (size_t i = 0; i < num_samples + 1; i++) { for (size_t i = 0; i < num_samples + 1; i++) {
double t = (double)i / num_samples; double t = (double)i / num_samples;
int p_x = cubic_bezier_x(t); int p_x = round(cubic_bezier_x(t));
int p_y = cubic_bezier_y(t); int p_y = round(cubic_bezier_y(t));
for (int y = max(p_y - delta, 0); y < min(p_y + delta + extra, height); y++) { for (int y = max(p_y - delta, 0); y < min(p_y + delta + extra, height); y++) {
for (int x = max(p_x - delta, 0); x < min(p_x + delta + extra, width); x++) { for (int x = max(p_x - delta, 0); x < min(p_x + delta + extra, width); x++) {