Switch to i16s for tile indices
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@ -983,6 +983,12 @@ impl<'o, 'p> Tiler<'o, 'p> {
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let tiles_across = ((strip_right_extent - strip_origin.x) / TILE_WIDTH) as usize;
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let view_box_origin_y = match self.view_box {
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Some(view_box) => view_box.origin.y,
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None => 0.0,
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};
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let mut tile_index_y = (f32::floor(view_box_origin_y / TILE_HEIGHT) * TILE_HEIGHT) as i16;
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let mut strip_fills = vec![];
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let mut strip_tiles = Vec::with_capacity(tiles_across);
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let mut used_strip_tiles = FixedBitSet::with_capacity(tiles_across);
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@ -998,10 +1004,7 @@ impl<'o, 'p> Tiler<'o, 'p> {
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strip_extent.y - strip_origin.y));
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// We can skip a bunch of steps if we're above the viewport.
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let above_view_box = match self.view_box {
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Some(ref view_box) => strip_extent.y <= view_box.origin.y,
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None => false,
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};
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let above_view_box = tile_index_y < 0;
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// Reset strip info.
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strip_fills.clear();
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@ -1009,21 +1012,20 @@ impl<'o, 'p> Tiler<'o, 'p> {
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used_strip_tiles.clear();
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// Allocate tiles.
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let mut tile_left = strip_origin.x;
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while tile_left < strip_right_extent {
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let strip_origin = Point2D::new(tile_left, strip_origin.y);
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strip_tiles.push(MaskTilePrimitive::new(&strip_origin, self.fill_color));
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tile_left += TILE_WIDTH;
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for tile_index_x in 0..tiles_across {
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strip_tiles.push(MaskTilePrimitive::new(tile_index_x as i16,
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tile_index_y,
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self.fill_color));
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}
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// Process old active edges.
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let (mut strip_tile_index, mut current_left) = (0, strip_bounds.origin.x);
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let (mut tile_index_x, mut current_left) = (0, strip_bounds.origin.x);
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let mut winding = 0;
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mem::swap(&mut old_active_edges, &mut self.active_edges.array);
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for mut active_edge in old_active_edges.drain(..) {
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// Move over to the correct tile, filling in as we go.
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let mut tile_left = strip_bounds.origin.x + (strip_tile_index as f32) * TILE_WIDTH;
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while strip_tile_index < strip_tiles.len() {
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let mut tile_left = strip_bounds.origin.x + (tile_index_x as f32) * TILE_WIDTH;
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while tile_index_x < strip_tiles.len() {
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let tile_right = tile_left + TILE_WIDTH;
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let segment_left = active_edge.segment.min_x();
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@ -1031,24 +1033,24 @@ impl<'o, 'p> Tiler<'o, 'p> {
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break
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}
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strip_tiles[strip_tile_index].backdrop = winding as f32;
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strip_tiles[tile_index_x].backdrop = winding as f32;
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current_left = tile_right;
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tile_left = tile_right;
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strip_tile_index += 1;
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tile_index_x += 1;
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}
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// Do subtile fill.
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let min_x = active_edge.segment.min_x();
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let edge_winding = active_edge.segment.winding();
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if current_left < min_x && strip_tile_index < strip_tiles.len() {
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if current_left < min_x && tile_index_x < strip_tiles.len() {
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let left = Point2D::new(current_left - tile_left, 0.0);
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let right = Point2D::new(current_left - min_x, 0.0);
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strip_fills.push(FillPrimitive {
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from: if edge_winding < 0 { left } else { right },
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to: if edge_winding < 0 { right } else { left },
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tile_index: strip_tile_index as u32,
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tile_index: tile_index_x as u32,
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});
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used_strip_tiles.insert(strip_tile_index);
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used_strip_tiles.insert(tile_index_x);
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current_left = right.x;
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}
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@ -1140,13 +1142,13 @@ impl<'o, 'p> Tiler<'o, 'p> {
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if !above_view_box {
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// Flush tiles.
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let first_tile_index = self.built_scene.mask_tiles.len() as u32;
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for (tile_index, tile) in strip_tiles.iter().enumerate() {
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if used_strip_tiles.contains(tile_index) {
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for (tile_index_x, tile) in strip_tiles.iter().enumerate() {
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if used_strip_tiles.contains(tile_index_x) {
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self.built_scene.mask_tiles.push(*tile);
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} else if tile.backdrop != 0.0 {
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self.built_scene
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.solid_tiles
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.push(SolidTilePrimitive::new(&tile.position, tile.color));
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let primitive =
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SolidTilePrimitive::new(tile_index_x as i16, tile_index_y, tile.color);
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self.built_scene.solid_tiles.push(primitive);
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}
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}
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@ -1164,8 +1166,8 @@ impl<'o, 'p> Tiler<'o, 'p> {
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}
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}
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// Sort point queue.
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strip_origin.y = strip_extent.y;
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tile_index_y += 1;
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}
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}
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@ -1277,13 +1279,15 @@ struct FillPrimitive {
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#[derive(Clone, Copy, Debug)]
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struct SolidTilePrimitive {
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position: Point2D<f32>,
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tile_x: i16,
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tile_y: i16,
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color: ColorU,
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}
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#[derive(Clone, Copy, Debug)]
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struct MaskTilePrimitive {
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position: Point2D<f32>,
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tile_x: i16,
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tile_y: i16,
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color: ColorU,
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backdrop: f32,
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}
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@ -1326,7 +1330,8 @@ impl BuiltScene {
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writer.write_u32::<LittleEndian>(solid_tiles_size as u32)?;
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for &tile_primitive in &self.solid_tiles {
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let color = tile_primitive.color;
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write_point(writer, &tile_primitive.position)?;
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writer.write_i16::<LittleEndian>(tile_primitive.tile_x)?;
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writer.write_i16::<LittleEndian>(tile_primitive.tile_y)?;
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writer.write_all(&[color.r, color.g, color.b, color.a]).unwrap();
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}
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@ -1334,7 +1339,8 @@ impl BuiltScene {
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writer.write_u32::<LittleEndian>(mask_tiles_size as u32)?;
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for &tile_primitive in &self.mask_tiles {
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let color = tile_primitive.color;
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write_point(writer, &tile_primitive.position)?;
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writer.write_i16::<LittleEndian>(tile_primitive.tile_x)?;
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writer.write_i16::<LittleEndian>(tile_primitive.tile_y)?;
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writer.write_f32::<LittleEndian>(tile_primitive.backdrop)?;
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writer.write_all(&[color.r, color.g, color.b, color.a]).unwrap();
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}
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@ -1350,14 +1356,14 @@ impl BuiltScene {
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}
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impl SolidTilePrimitive {
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fn new(position: &Point2D<f32>, color: ColorU) -> SolidTilePrimitive {
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SolidTilePrimitive { position: *position, color }
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fn new(tile_x: i16, tile_y: i16, color: ColorU) -> SolidTilePrimitive {
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SolidTilePrimitive { tile_x, tile_y, color }
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}
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}
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impl MaskTilePrimitive {
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fn new(position: &Point2D<f32>, color: ColorU) -> MaskTilePrimitive {
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MaskTilePrimitive { position: *position, backdrop: 0.0, color }
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fn new(tile_x: i16, tile_y: i16, color: ColorU) -> MaskTilePrimitive {
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MaskTilePrimitive { tile_x, tile_y, backdrop: 0.0, color }
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}
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}
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