public-mirrors/3b1b-manim
1
0
Fork 0
mirror of https://github.com/3b1b/manim.git synced 2025-11-14 08:17:43 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fix straight line fill anti-alias issue

Browse source
This commit is contained in:
Grant Sanderson 2023-01-20 17:35:36 -08:00
parent f2d4313bcf
commit 8fee4d1a66
1 changed files with 7 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
manimlib/shaders/quadratic_bezier_fill/geom.glsl
View file

@ -62,6 +62,12 @@ void emit_pentagon(
float angle = acos(clamp(dot(t01, t12), -1, 1));
is_linear = float(angle < ANGLE_THRESHOLD);
if(bool(is_linear)){
// Cross with unit z vector
p0_perp = normalize(vec3(-t01.y, t01.x, 0));
p2_perp = p0_perp;
}
bool fill_inside = orientation > 0.0;
float aaw = anti_alias_width * pixel_size;
vec3 corners[5] = vec3[5](p0, p0, p1, p2, p2);
@ -71,8 +77,7 @@ void emit_pentagon(
corners[0] += aaw * p0_perp;
corners[2] += 0.5 * aaw * (p0_perp + p2_perp);
corners[4] += aaw * p2_perp;
}
if(!fill_inside || bool(is_linear)){
} else{
// Add buffer inside the curve
corners[1] -= aaw * p0_perp;
corners[3] -= aaw * p2_perp;