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More work on server side for tracks. Now uses converters instead of indexers. A wiggle to array_tree converter is provided. Still need to purge indexer stuff. This will not work without new bx egg (or likely at all)

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This commit is contained in:
James Taylor
2009-09-18 15:15:39 -04:00
parent 6b92bf6eb8
commit b2c9c284de
12 changed files with 268 additions and 216 deletions
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static/scripts/trackster.js
+42 -33
View File
@@ -1,5 +1,9 @@
var DENSITY = 1000;
var BLOCK_SIZE = 1000;
var log = function( x, b ) { return Math.log( x ) / Math.log( b ) }
var View = function( chr, length, low, high ) {
this.chr = chr;
this.length = length;
@@ -83,9 +87,12 @@ $.extend( TiledTrack.prototype, Track.prototype, {
high = this.view.high,
range = high - low;
var resolution = Math.pow( 10, Math.ceil( Math.log( range / DENSITY ) / Math.log( 10 ) ) );
var resolution = Math.pow( BLOCK_SIZE, Math.floor( log( range, BLOCK_SIZE ) ) );
// Math.pow( 10, Math.ceil( Math.log( range / DENSITY ) / Math.log( 10 ) ) );
console//.log( "resolution:", resolution );
resolution = Math.max( resolution, 1 );
resolution = Math.min( resolution, 100000 );
resolution = Math.min( resolution, 1000000 );
var parent_element = $("<div style='position: relative;'></div>");
this.content_div.children( ":first" ).remove();
@@ -155,7 +162,7 @@ $.extend( DataCache.prototype, {
// use closure to preserve this and parameters for getJSON
var fetcher = function (ref) {
return function () {
$.getJSON( TRACKSTER_DATA_URL + ref.type, { chrom: ref.view.chr, low: low, high: high, dataset_id: ref.track.dataset_id }, function ( data ) {
$.getJSON( TRACKSTER_DATA_URL, { track_type: ref.type, chrom: ref.view.chr, low: low, high: high, dataset_id: ref.track.dataset_id }, function ( data ) {
if( data == "pending" ) {
setTimeout( fetcher, 5000 );
} else {
@@ -175,7 +182,7 @@ var LineTrack = function ( name, view, parent_element, dataset_id ) {
Track.call( this, name, view, parent_element );
this.container_div.addClass( "line-track" );
this.dataset_id = dataset_id;
this.cache = new DataCache( "", this, view );
this.cache = new DataCache( "line", this, view );
};
$.extend( LineTrack.prototype, TiledTrack.prototype, {
make_container: function () {
@@ -209,35 +216,37 @@ $.extend( LineTrack.prototype, TiledTrack.prototype, {
var canvas = element;
canvas.get(0).width = canvas.width();
canvas.get(0).height = canvas.height();
var ctx = canvas.get(0).getContext("2d");
var in_path = false;
ctx.beginPath();
var data = chunk.values;
for ( var i = 0; i < data.length - 1; i++ ) {
var x1 = data[i][0] - tile_low;
var y1 = data[i][1];
var x2 = data[i+1][0] - tile_low;
var y2 = data[i+1][1];
console.log( x1, y1, x2, y2 );
// Missing data causes us to stop drawing
if ( isNaN( y1 ) || isNaN( y2 ) ) {
in_path = false;
} else {
// Translate
x1 = x1 * w_scale;
x2 = x2 * w_scale;
y1 = h_scale - y1 * ( h_scale );
y2 = h_scale - y2 * ( h_scale );
if ( in_path ) {
ctx.lineTo( x1, y1, x2, y2 );
} else {
ctx.moveTo( x1, y1, x2, y2 );
in_path = true;
}
}
}
ctx.stroke();
return element;
var data = chunk.values;
if ( data ) {
var ctx = canvas.get(0).getContext("2d");
var in_path = false;
ctx.beginPath();
// console.log( "Drawing tile" );
for ( var i = 0; i < data.length - 1; i++ ) {
var x1 = data[i][0] - tile_low;
var y1 = data[i][1];
var x2 = data[i+1][0] - tile_low;
var y2 = data[i+1][1];
// Missing data causes us to stop drawing
if ( isNaN( y1 ) || isNaN( y2 ) ) {
in_path = false;
} else {
// Translate
x1 = x1 * w_scale;
x2 = x2 * w_scale;
y1 = h_scale - y1 * ( h_scale );
y2 = h_scale - y2 * ( h_scale );
if ( in_path ) {
ctx.lineTo( x1, y1, x2, y2 );
} else {
ctx.moveTo( x1, y1, x2, y2 );
in_path = true;
}
}
}
ctx.stroke();
}
return element;
}
});