Add miter joins at endpoints
This commit is contained in:
parent
e282eb57d5
commit
cba5444f03
|
@ -60,9 +60,7 @@ impl OutlineStrokeToFill {
|
|||
|
||||
stroker.offset_forward();
|
||||
if closed {
|
||||
// TODO(pcwalton): Line join.
|
||||
stroker.output.closed = true;
|
||||
new_contours.push(stroker.output);
|
||||
self.push_stroked_contour(&mut new_contours, stroker.output, true);
|
||||
stroker = ContourStrokeToFill::new(stroker.input,
|
||||
Contour::new(),
|
||||
self.style.line_width * 0.5,
|
||||
|
@ -78,8 +76,7 @@ impl OutlineStrokeToFill {
|
|||
self.add_cap(&mut stroker.output);
|
||||
}
|
||||
|
||||
stroker.output.closed = true;
|
||||
new_contours.push(stroker.output);
|
||||
self.push_stroked_contour(&mut new_contours, stroker.output, closed);
|
||||
}
|
||||
|
||||
let mut new_bounds = None;
|
||||
|
@ -89,7 +86,21 @@ impl OutlineStrokeToFill {
|
|||
self.outline.bounds = new_bounds.unwrap_or_else(|| RectF32::default());
|
||||
}
|
||||
|
||||
pub fn add_cap(&mut self, contour: &mut Contour) {
|
||||
fn push_stroked_contour(&mut self,
|
||||
new_contours: &mut Vec<Contour>,
|
||||
mut contour: Contour,
|
||||
closed: bool) {
|
||||
// Add join if necessary.
|
||||
if closed && contour.needs_join(self.style.line_join) {
|
||||
let (p1, p0) = (contour.position_of(1), contour.position_of(0));
|
||||
contour.add_join(self.style.line_join, &LineSegmentF32::new(p0, p1));
|
||||
}
|
||||
|
||||
contour.closed = true;
|
||||
new_contours.push(contour);
|
||||
}
|
||||
|
||||
fn add_cap(&mut self, contour: &mut Contour) {
|
||||
if self.style.line_cap == LineCap::Butt || contour.len() < 2 {
|
||||
return
|
||||
}
|
||||
|
@ -170,10 +181,8 @@ impl Offset for Segment {
|
|||
}
|
||||
|
||||
fn add_to_contour(&self, join: LineJoin, contour: &mut Contour) {
|
||||
// Add join.
|
||||
// TODO(pcwalton): Miter limit.
|
||||
if join == LineJoin::Miter && contour.len() >= 2 {
|
||||
let (p0, p1) = (contour.position_of_last(2), contour.position_of_last(1));
|
||||
// Add join if necessary.
|
||||
if contour.needs_join(join) {
|
||||
let p3 = self.baseline.from();
|
||||
let p4 = if self.is_line() {
|
||||
self.baseline.to()
|
||||
|
@ -183,11 +192,7 @@ impl Offset for Segment {
|
|||
self.ctrl.from()
|
||||
};
|
||||
|
||||
let prev_tangent = LineSegmentF32::new(p0, p1);
|
||||
let next_tangent = LineSegmentF32::new(p4, p3);
|
||||
if let Some(prev_tangent_t) = prev_tangent.intersection_t(&next_tangent) {
|
||||
contour.push_endpoint(prev_tangent.sample(prev_tangent_t));
|
||||
}
|
||||
contour.add_join(join, &LineSegmentF32::new(p4, p3));
|
||||
}
|
||||
|
||||
// Push segment.
|
||||
|
@ -292,6 +297,22 @@ impl Offset for Segment {
|
|||
}
|
||||
}
|
||||
|
||||
impl Contour {
|
||||
fn needs_join(&self, join: LineJoin) -> bool {
|
||||
// TODO(pcwalton): Miter limit.
|
||||
join == LineJoin::Miter && self.len() >= 2
|
||||
}
|
||||
|
||||
fn add_join(&mut self, _: LineJoin, next_tangent: &LineSegmentF32) {
|
||||
// TODO(pcwalton): Round joins.
|
||||
let (p0, p1) = (self.position_of_last(2), self.position_of_last(1));
|
||||
let prev_tangent = LineSegmentF32::new(p0, p1);
|
||||
if let Some(prev_tangent_t) = prev_tangent.intersection_t(&next_tangent) {
|
||||
self.push_endpoint(prev_tangent.sample(prev_tangent_t));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for StrokeStyle {
|
||||
#[inline]
|
||||
fn default() -> StrokeStyle {
|
||||
|
|
Loading…
Reference in New Issue