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Trackster: stabilize tile boundary calculations so that tiles do not overlap or yield visual artifacts.

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This commit is contained in:
Jeremy Goecks
2014-08-06 10:28:01 -04:00
parent 947ac3d2bf
commit 870f3c4e51
2 changed files with 9 additions and 10 deletions
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static/scripts/packed/viz/trackster/tracks.js
+1 -1
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static/scripts/viz/trackster/tracks.js
+8 -9
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@@ -1021,7 +1021,7 @@ var TracksterView = Backbone.View.extend({
d.current_x = d.offsetX;
var delta_chrom = Math.round(delta / view.viewport_container.width() * (view.high - view.low));
view.move_delta(delta_chrom);
})
});
/*
FIXME: Do not do this for now because it's too jittery. Some kind of gravity approach is
needed here because moving left/right should be difficult.
@@ -1600,7 +1600,7 @@ var TracksterTool = tools_mod.Tool.extend({
// Restore tool visibility from state; default to hidden.
var hidden = true;
if (options.tool_state !== undefined && options.tool_state.hidden !== undefined) {
hidden = options.tool_state.hidden
hidden = options.tool_state.hidden;
}
this.set('hidden', hidden);
@@ -2756,22 +2756,22 @@ extend(TiledTrack.prototype, Drawable.prototype, Track.prototype, {
this.tiles_div.children().addClass("remove");
var
// Tile width in bases.
tile_width = Math.floor(TILE_SIZE * resolution),
// Index of first tile that overlaps visible region.
tile_index = Math.floor( low / (resolution * TILE_SIZE) ),
// Base that first tile starts with.
tile_low = Math.floor(tile_index * TILE_SIZE * resolution),
tile_index = Math.floor(low / tile_width),
tile_region,
tile_promise,
tile_promises = [],
tiles = [];
// Draw tiles.
while ( ( tile_index * TILE_SIZE * resolution ) < high ) {
while ( (tile_index * tile_width) < high ) {
// Get tile region.
tile_region = new visualization.GenomeRegion({
chrom: this.view.chrom,
start: tile_low,
start: tile_index * tile_width,
// Tile high cannot be larger than view.max_high, which the chromosome length.
end: Math.min( tile_low + Math.ceil( TILE_SIZE * resolution ), this.view.max_high )
end: Math.min( (tile_index + 1) * tile_width, this.view.max_high)
});
tile_promise = this.draw_helper(tile_region, w_scale, options);
tile_promises.push(tile_promise);
@@ -2781,7 +2781,6 @@ extend(TiledTrack.prototype, Drawable.prototype, Track.prototype, {
// Go to next tile.
tile_index += 1;
tile_low = tile_region.get('end');
}
// Step (c) for (re)moving tiles when clear_after is false.