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wip

This commit is contained in:
Patrick Walton 2018-12-21 17:45:16 -08:00
parent e6f4072495
commit b29ad14d83
1 changed files with 42 additions and 20 deletions
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62
utils/tile-svg/src/main.rs
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@ -907,6 +907,7 @@ impl Segment {
}
fn min_x(&self) -> f32 { f32::min(self.from.x, self.to.x) }
fn max_x(&self) -> f32 { f32::max(self.from.x, self.to.x) }
fn winding(&self) -> i32 {
match self.from.x.partial_cmp(&self.to.x) {
@ -1053,7 +1054,7 @@ impl<'o, 'p> Tiler<'o, 'p> {
if !above_view_box {
// NB: This order must not be changed!
self.flush_fills();
self.flush_tiles(tile_index_y);
self.flush_tiles();
}
}
@ -1066,35 +1067,46 @@ impl<'o, 'p> Tiler<'o, 'p> {
let mut winding = 0;
mem::swap(&mut self.old_active_edges, &mut self.active_edges.array);
for mut active_edge in self.old_active_edges.drain(..) {
let (segment_x, edge_winding) =
if active_edge.segment.from.y < active_edge.segment.to.y {
(active_edge.segment.from.x, 1)
} else {
(active_edge.segment.to.x, -1)
};
// Move over to the correct tile, filling in as we go.
let mut tile_left = strip_bounds.origin.x + (tile_index_x as f32) * TILE_WIDTH;
while tile_index_x < self.strip_tiles.len() {
let tile_right = tile_left + TILE_WIDTH;
let segment_left = active_edge.segment.min_x();
if tile_left > segment_left {
/*println!("filling tile_left={}, segment_x={} winding={}?",
tile_left,
segment_x,
winding);*/
if tile_right > segment_x {
break
}
//println!("... filling!");
self.strip_tiles[tile_index_x].backdrop = winding as f32;
current_left = tile_right;
tile_left = tile_right;
tile_index_x += 1;
}
// Do subtile fill.
let min_x = active_edge.segment.min_x();
let edge_winding = active_edge.segment.winding();
if current_left < min_x && tile_index_x < self.strip_tiles.len() {
let left = Point2D::new(current_left - tile_left, 0.0);
let right = Point2D::new(current_left - min_x, 0.0);
// Do subtile fills.
if current_left < segment_x && tile_index_x < self.strip_tiles.len() {
let subtile_left = Point2D::new(current_left - tile_left, 0.0);
let subtile_right = Point2D::new(segment_x - tile_left, 0.0);
self.strip_fills.push(FillPrimitive {
from: if edge_winding < 0 { left } else { right },
to: if edge_winding < 0 { right } else { left },
from: if edge_winding < 0 { subtile_left } else { subtile_right },
to: if edge_winding < 0 { subtile_right } else { subtile_left },
tile_index: tile_index_x as u32,
});
self.used_strip_tiles.insert(tile_index_x);
current_left = right.x;
current_left = segment_x;
}
// Update winding.
@ -1164,15 +1176,17 @@ impl<'o, 'p> Tiler<'o, 'p> {
}
#[inline(never)]
fn flush_tiles(&mut self, tile_index_y: i16) {
fn flush_tiles(&mut self) {
// Flush tiles.
for (tile_index_x, tile) in self.strip_tiles.iter().enumerate() {
if self.used_strip_tiles.contains(tile_index_x) {
self.built_scene.mask_tiles.push(*tile);
} else if tile.backdrop != 0.0 {
let primitive =
SolidTilePrimitive::new(tile_index_x as i16, tile_index_y, tile.color);
self.built_scene.solid_tiles.push(primitive);
self.built_scene.solid_tiles.push(SolidTilePrimitive {
tile_x: tile.tile_x,
tile_y: tile.tile_y,
color: tile.color,
});
}
}
}
@ -1800,9 +1814,17 @@ impl ActiveEdge {
impl PartialOrd<ActiveEdge> for ActiveEdge {
fn partial_cmp(&self, other: &ActiveEdge) -> Option<Ordering> {
// NB: Reversed!
let this_left = f32::min(self.segment.from.x, self.segment.to.x);
let other_left = f32::min(other.segment.from.x, other.segment.to.x);
other_left.partial_cmp(&this_left)
let this_x = if self.segment.from.y < self.segment.to.y {
self.segment.from.x
} else {
self.segment.to.x
};
let other_x = if other.segment.from.y < other.segment.to.y {
other.segment.from.x
} else {
other.segment.to.x
};
this_x.partial_cmp(&other_x)
}
}