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Temporarily(?) allow stroke shader to sometimes cross triangles so as to avoid other artifacts

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This commit is contained in:
Grant Sanderson 2020-02-12 12:51:36 -08:00
parent ec90bb2e8a
commit cb31ce3049
1 changed files with 4 additions and 4 deletions
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8
manimlib/shaders/quadratic_bezier_stroke_geom.glsl
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@ -171,14 +171,14 @@ int get_corners(vec2 controls[3], int degree, out vec2 corners[5]){
// make sure corners forms a convex hull around the curve. // make sure corners forms a convex hull around the curve.
if(cross(v10, v12) > 0){ if(cross(v10, v12) > 0){
bool change_c0 = ( bool change_c0 = (
has_prev == 0 && // has_prev == 0 &&
dot(v21, v20) > 0 && dot(v21, v20) > 0 &&
should_motify_corner(c0, v01, c2, c3, v21, buff0) should_motify_corner(c0, v01, c2, c3, v21, buff0)
); );
if(change_c0) c0 = p0 + p2_perp * buff0; if(change_c0) c0 = p0 + p2_perp * buff0;
bool change_c3 = ( bool change_c3 = (
has_next == 0 && // has_next == 0 &&
dot(v01, v02) > 0 && dot(v01, v02) > 0 &&
should_motify_corner(c3, v21, c1, c0, v01, buff2) should_motify_corner(c3, v21, c1, c0, v01, buff2)
); );
@ -189,14 +189,14 @@ int get_corners(vec2 controls[3], int degree, out vec2 corners[5]){
corners = vec2[5](c1, c0, i12, c3, c2); corners = vec2[5](c1, c0, i12, c3, c2);
}else{ }else{
bool change_c1 = ( bool change_c1 = (
has_prev == 0 && // has_prev == 0 &&
dot(v21, v20) > 0 && dot(v21, v20) > 0 &&
should_motify_corner(c1, v01, c3, c2, v21, buff0) should_motify_corner(c1, v01, c3, c2, v21, buff0)
); );
if(change_c1) c1 = p0 - p2_perp * buff0; if(change_c1) c1 = p0 - p2_perp * buff0;
bool change_c2 = ( bool change_c2 = (
has_next == 0 && // has_next == 0 &&
dot(v01, v02) > 0 && dot(v01, v02) > 0 &&
should_motify_corner(c2, v21, c0, c1, v01, buff2) should_motify_corner(c2, v21, c0, c1, v01, buff2)
); );