public-mirrors/3b1b-manim
1
0
Fork 0
mirror of https://github.com/3b1b/manim.git synced 2025-09-01 00:48:45 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Don't recompute cross(v01, v12)

Browse source
This commit is contained in:
Grant Sanderson 2023-01-17 13:18:32 -08:00
parent 1b3bc7a27c
commit 7fe84d9263
1 changed files with 6 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
manimlib/shaders/quadratic_bezier_stroke/geom.glsl
View file

@ -137,13 +137,15 @@ void get_corners(
vec3 c5 = p2 - p2_perp;
// Move the inner middle control point to make
// room for the curve
float orientation = dot(normal0, cross(v01, v12));
if(orientation >= 0.0) c2 = 0.5 * (c0 + c4);
float orientation = dot(normal0, v_joint_product[1].xyz);
if(orientation >= 0.0) c2 = 0.5 * (c0 + c4);
else if(orientation < 0.0) c3 = 0.5 * (c1 + c5);
// Account for previous and next control points
create_joint(v_joint_product[0].w, v01, buff0, c1, c1, c0, c0);
create_joint(v_joint_product[2].w, -v12, buff2, c5, c5, c4, c4);
if(bool(flat_stroke)){
create_joint(v_joint_product[0].w, v01, buff0, c1, c1, c0, c0);
create_joint(v_joint_product[2].w, -v12, buff2, c5, c5, c4, c4);
}
corners = vec3[6](c0, c1, c2, c3, c4, c5);
}