wip on the fly
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68eff21138
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@ -745,43 +745,73 @@ impl Segment {
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}
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}
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fn generate_fill_primitives(&self, built_object: &mut BuiltObject, tile_y: i16) {
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if let Some(line_segment) = self.as_line_segment() {
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generate_fill_primitives_for_line(line_segment, built_object, tile_y);
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fn process_active_edge(&mut self, built_object: &mut BuiltObject, tile_y: i16) {
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let tile_bottom = ((tile_y as i32 + 1) * TILE_HEIGHT as i32) as f32;
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if self.is_line_segment() {
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generate_fill_primitives_for_line_outer(self, built_object, tile_y);
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return;
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}
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if self.is_cubic_segment() {
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let segment = self.as_cubic_segment();
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let flattener = segment.flattener();
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let mut from = self.baseline.from();
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for to in flattener {
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generate_fill_primitives_for_line(LineSegmentF32::new(&from, &to),
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built_object,
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tile_y);
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from = to;
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// TODO(pcwalton): Don't degree elevate!
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if !self.is_cubic_segment() {
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*self = self.to_cubic();
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}
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let mut segment = *self;
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let winds_up = segment.baseline.from_y() > segment.baseline.to_y();
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if winds_up {
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segment = segment.reversed();
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}
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let segment = segment.as_cubic_segment();
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let flattener = segment.flattener();
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let mut from = segment.0.baseline.from();
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for to in flattener {
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let mut subsegment = if !winds_up {
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Segment::from_line(&LineSegmentF32::new(&from, &to))
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} else {
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Segment::from_line(&LineSegmentF32::new(&to, &from))
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};
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generate_fill_primitives_for_line_outer(&mut subsegment, built_object, tile_y);
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if !subsegment.is_none() {
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*self = self.split_y(tile_bottom).1.unwrap_or(Segment::new());
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return;
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}
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let to = self.baseline.to();
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generate_fill_primitives_for_line(LineSegmentF32::new(&from, &to),
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built_object,
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tile_y);
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from = to;
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}
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let to = segment.0.baseline.to();
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let mut subsegment = if !winds_up {
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Segment::from_line(&LineSegmentF32::new(&from, &to))
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} else {
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// TODO(pcwalton): Don't degree elevate!
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let segment = self.as_lyon_cubic_segment().unwrap();
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//println!("generate_fill_primitives(segment={:?})", segment);
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let flattener = Flattened::new(segment, FLATTENING_TOLERANCE);
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let mut from = self.baseline.from();
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for to in flattener {
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let to = Point2DF32::from_euclid(&to);
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generate_fill_primitives_for_line(LineSegmentF32::new(&from, &to),
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Segment::from_line(&LineSegmentF32::new(&to, &from))
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};
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generate_fill_primitives_for_line_outer(&mut subsegment, built_object, tile_y);
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if !subsegment.is_none() {
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*self = self.split_y(tile_bottom).1.unwrap_or(Segment::new());
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return;
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}
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*self = Segment::new();
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return;
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fn generate_fill_primitives_for_line_outer(segment: &mut Segment,
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built_object: &mut BuiltObject,
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tile_y: i16) {
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let tile_bottom = ((tile_y as i32 + 1) * TILE_HEIGHT as i32) as f32;
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let (upper_segment, lower_segment) = segment.split_y(tile_bottom);
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if let Some(upper_segment) = upper_segment {
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generate_fill_primitives_for_line(upper_segment.as_line_segment().unwrap(),
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built_object,
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tile_y);
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from = to;
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}
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let to = self.baseline.to();
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generate_fill_primitives_for_line(LineSegmentF32::new(&from, &to),
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built_object,
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tile_y);
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*segment = lower_segment.unwrap_or(Segment::new());
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}
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// TODO(pcwalton): Optimize this better with SIMD!
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@ -833,6 +863,12 @@ impl Segment {
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!self.flags.contains(SegmentFlags::HAS_ENDPOINTS)
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}
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fn is_line_segment(&self) -> bool {
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self.flags.contains(SegmentFlags::HAS_ENDPOINTS) &&
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!self.flags.contains(SegmentFlags::HAS_CONTROL_POINT_0 |
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SegmentFlags::HAS_CONTROL_POINT_1)
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}
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fn is_cubic_segment(&self) -> bool {
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self.flags.contains(SegmentFlags::HAS_CONTROL_POINT_0 | SegmentFlags::HAS_CONTROL_POINT_1)
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}
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@ -855,6 +891,14 @@ impl Segment {
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&(p1_2 + self.baseline.to())).scale(1.0 / 3.0);
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new_segment
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}
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fn reversed(&self) -> Segment {
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Segment {
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baseline: self.baseline.reversed(),
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ctrl: self.ctrl.reversed(),
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flags: self.flags,
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}
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}
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}
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bitflags! {
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@ -1116,7 +1160,7 @@ impl<'o, 'z> Tiler<'o, 'z> {
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current_winding += edge_winding;
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// Process the edge.
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process_active_edge(&mut active_edge.segment, &mut self.built_object, tile_y);
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active_edge.segment.process_active_edge(&mut self.built_object, tile_y);
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if !active_edge.segment.is_none() {
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self.active_edges.push(active_edge);
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}
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@ -1214,13 +1258,14 @@ fn process_active_segment(contour: &Contour,
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built_object: &mut BuiltObject,
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tile_y: i16) {
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let mut segment = contour.segment_after(from_endpoint_index);
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process_active_edge(&mut segment, built_object, tile_y);
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segment.process_active_edge(built_object, tile_y);
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if !segment.is_none() {
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active_edges.push(ActiveEdge::new(segment));
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}
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}
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/*
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fn process_active_edge(active_edge: &mut Segment, built_object: &mut BuiltObject, tile_y: i16) {
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// Chop the segment.
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// TODO(pcwalton): Maybe these shouldn't be Options?
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@ -1235,6 +1280,7 @@ fn process_active_edge(active_edge: &mut Segment, built_object: &mut BuiltObject
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// Queue lower part.
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*active_edge = lower_segment.unwrap_or(Segment::new());
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}
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*/
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// Scene construction
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@ -2383,6 +2429,12 @@ impl LineSegmentF32 {
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fn solve_y_for_x(&self, x: f32) -> f32 {
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self.as_lyon_line_segment().solve_y_for_x(x)
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}
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fn reversed(&self) -> LineSegmentF32 {
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unsafe {
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LineSegmentF32(Sse41::shuffle_ps(self.0, self.0, 0b01001110))
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}
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}
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}
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impl PartialEq for LineSegmentF32 {
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