michael/pathfinder
michael
/
pathfinder
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Search backward for a non-coincident point if the two ending points of a capped 

stroke are coincident.

This prevents a divide by zero in normalization.
This commit is contained in:
Patrick Walton 2020-03-31 13:29:47 -07:00
parent 9212c742b7
commit c7ca630aad
1 changed files with 16 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
content/src/stroke.rs
View File

@ -15,6 +15,7 @@ use crate::segment::Segment;
use pathfinder_geometry::line_segment::LineSegment2F; use pathfinder_geometry::line_segment::LineSegment2F;
use pathfinder_geometry::rect::RectF; use pathfinder_geometry::rect::RectF;
use pathfinder_geometry::transform2d::Transform2F; use pathfinder_geometry::transform2d::Transform2F;
use pathfinder_geometry::util::EPSILON;
use pathfinder_geometry::vector::Vector2F; use pathfinder_geometry::vector::Vector2F;
use std::f32; use std::f32;
@ -117,7 +118,21 @@ impl<'a> OutlineStrokeToFill<'a> {
} }
let width = self.style.line_width; let width = self.style.line_width;
let (p0, p1) = (contour.position_of_last(2), contour.position_of_last(1)); let p1 = contour.position_of_last(1);
// Determine the ending gradient.
let mut p0;
let mut p0_index = contour.len() - 2;
loop {
p0 = contour.position_of(p0_index);
if (p1 - p0).square_length() > EPSILON {
break;
}
if p0_index == 0 {
return;
}
p0_index -= 1;
}
let gradient = (p1 - p0).normalize(); let gradient = (p1 - p0).normalize();
match self.style.line_cap { match self.style.line_cap {