1 new commit in galaxy-central:

https://bitbucket.org/galaxy/galaxy-central/changeset/67d388232ff3/ changeset: 67d388232ff3 user: jgoecks date: 2011-12-10 16:35:31 summary: Trackster bug fixes for random color generation and LineTrack display in line and intensity modes. affected #: 1 file

diff -r f148a319a3138843926a26b278793d3fd4a55fbc -r 67d388232ff37b5d9890f2e30a29608676928fa5 static/scripts/trackster.js --- a/static/scripts/trackster.js +++ b/static/scripts/trackster.js @@ -120,31 +120,34 @@ var new_color, nr, ng, nb, other_color, or, og, ob, n_brightness, o_brightness, - diff, ok = false; + diff, ok = false, + num_tries = 0; do { // New color is never white b/c random in [0,1) - new_color = Math.random() * 0xffffff; - nr = new_color | 0xff0000; - ng = new_color | 0x00ff00; - nb = new_color | 0x0000ff; + new_color = Math.round( Math.random() * 0xffffff ); + nr = ( new_color & 0xff0000 ) >> 16; + ng = ( new_color & 0x00ff00 ) >> 8; + nb = new_color & 0x0000ff; n_brightness = brightness(nr, ng, nb); ok = true; for (var i = 0; i < colors.length; i++) { other_color = colors[i]; - or = other_color | 0xff0000; - og = other_color | 0x00ff00; - ob = other_color | 0x0000ff; + or = ( other_color & 0xff0000 ) >> 16; + og = ( other_color & 0x00ff00 ) >> 8; + ob = other_color & 0x0000ff; o_brightness = brightness(or, og, ob); diff = difference(nr, ng, nb, or, og, ob); - // Thresholds for brightness difference and color difference - // are from W3C link above. - if ( ( Math.abs(n_brightness - o_brightness) < 125 ) || - ( diff < 500 ) ) { + // These thresholds may need to be adjusted. Brightness difference range is 125; + // color difference range is 500. + if ( ( Math.abs(n_brightness - o_brightness) < 40 ) || + ( diff < 200 ) ) { ok = false; break; } } - } while (!ok); + + num_tries++ + } while (!ok && num_tries <= 10 );

// Add 0x1000000 to left pad number with 0s. return '#' + ( 0x1000000 + new_color ).toString(16).substr(1,6); @@ -4445,8 +4448,17 @@ } else { delta_x_px = 10; } + + // Extract RGB from preference color. + var + pref_color = parseInt( this.prefs.color.slice(1), 16 ), + pref_r = (pref_color & 0xff0000) >> 16, + pref_g = (pref_color & 0x00ff00) >> 8, + pref_b = pref_color & 0x0000ff; + + // Paint track. for (var i = 0, len = data.length; i < len; i++) { - ctx.fillStyle = this.prefs.color; + ctx.fillStyle = ctx.strokeStyle = this.prefs.color; x_scaled = Math.round((data[i][0] - view_start) * w_scale); y = data[i][1]; var top_overflow = false, bot_overflow = false; @@ -4469,9 +4481,14 @@ // y becomes the bar height in pixels, which is the negated for canvas coords y = Math.round( y / vertical_range * height_px ); ctx.fillRect(x_scaled, y_zero, delta_x_px, - y ); - } else if (mode === "Intensity" ) { - y = 255 - Math.floor( (y - min_value) / vertical_range * 255 ); - ctx.fillStyle = "rgb(" +y+ "," +y+ "," +y+ ")"; + } else if (mode === "Intensity") { + var + saturation = (y - min_value) / vertical_range, + // Range is [pref_color, 255] where saturation = 0 --> 255 and saturation = 1 --> pref color + new_r = Math.round( pref_r + (255 - pref_r) * (1 - saturation) ), + new_g = Math.round( pref_g + (255 - pref_g) * (1 - saturation) ), + new_b = Math.round( pref_b + (255 - pref_b) * (1 - saturation) ); + ctx.fillStyle = "rgb(" + new_r + "," + new_g + "," + new_b + ")"; ctx.fillRect(x_scaled, 0, delta_x_px, height_px); } else { // console.log(y, track.min_value, track.vertical_range, (y - track.min_value) / track.vertical_range * track.height_px);

Repository URL: https://bitbucket.org/galaxy/galaxy-central/

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