-var board = [];
+var board = null;
+var hiddenboard = null;
var arrows = [];
-var arrow_targets = [];
var occupied_by_arrows = [];
+var refutation_lines = [];
+var move_num = 1;
+var toplay = 'W';
var ims = 0;
+var sort_refutation_lines_by_score = 0;
var highlight_from = undefined;
var highlight_to = undefined;
var unique = Math.random();
+var fen = null;
+var display_lines = [];
+var current_display_line = null;
+var current_display_move = null;
+
var request_update = function(board) {
$.ajax({
url: "http://analysis.sesse.net/analysis.pl?ims=" + ims + "&unique=" + unique
ims = xhr.getResponseHeader('X-Remoteglot-Last-Modified');
var num_viewers = xhr.getResponseHeader('X-Remoteglot-Num-Viewers');
update_board(board, data, num_viewers);
+ }).fail(function() {
+ // Wait ten seconds, then try again.
+ setTimeout(function() { request_update(board); }, 10000);
});
}
var clear_arrows = function() {
for (var i = 0; i < arrows.length; ++i) {
- jsPlumb.detach(arrows[i].connection1);
- jsPlumb.detach(arrows[i].connection2);
+ if (arrows[i].svg) {
+ arrows[i].svg.parentElement.removeChild(arrows[i].svg);
+ delete arrows[i].svg;
+ }
}
arrows = [];
- for (var i = 0; i < arrow_targets.length; ++i) {
- document.body.removeChild(arrow_targets[i]);
- }
- arrow_targets = [];
-
- occupied_by_arrows = [];
+ occupied_by_arrows = [];
for (var y = 0; y < 8; ++y) {
occupied_by_arrows.push([false, false, false, false, false, false, false, false]);
}
return false;
}
-var add_target = function() {
- var elem = document.createElement("div");
- $(elem).addClass("window");
- elem.id = "target" + arrow_targets.length;
- document.body.appendChild(elem);
- arrow_targets.push(elem);
- return elem.id;
+var point_from_start = function(x1, y1, x2, y2, t, u) {
+ var dx = x2 - x1;
+ var dy = y2 - y1;
+
+ var norm = 1.0 / Math.sqrt(dx * dx + dy * dy);
+ dx *= norm;
+ dy *= norm;
+
+ var x = x1 + dx * t + dy * u;
+ var y = y1 + dy * t - dx * u;
+ return x + " " + y;
}
-
+
+var point_from_end = function(x1, y1, x2, y2, t, u) {
+ var dx = x2 - x1;
+ var dy = y2 - y1;
+
+ var norm = 1.0 / Math.sqrt(dx * dx + dy * dy);
+ dx *= norm;
+ dy *= norm;
+
+ var x = x2 + dx * t + dy * u;
+ var y = y2 + dy * t - dx * u;
+ return x + " " + y;
+}
+
var position_arrow = function(arrow) {
+ if (arrow.svg) {
+ arrow.svg.parentElement.removeChild(arrow.svg);
+ delete arrow.svg;
+ }
+ if (current_display_line !== null) {
+ return;
+ }
+
+ var pos = $(".square-a8").position();
+
var zoom_factor = $("#board").width() / 400.0;
var line_width = arrow.line_width * zoom_factor;
var arrow_size = arrow.arrow_size * zoom_factor;
var from_x = (arrow.from_col + 0.5)*square_width;
var to_x = (arrow.to_col + 0.5)*square_width;
- var dx = to_x - from_x;
- var dy = to_y - from_y;
- var len = Math.sqrt(dx * dx + dy * dy);
- dx /= len;
- dy /= len;
- var pos = $(".square-a8").position();
- $("#" + arrow.s1).css({ top: pos.top + from_y + (0.5 * arrow_size) * dy, left: pos.left + from_x + (0.5 * arrow_size) * dx });
- $("#" + arrow.d1).css({ top: pos.top + to_y - (0.5 * arrow_size) * dy, left: pos.left + to_x - (0.5 * arrow_size) * dx });
- $("#" + arrow.s1v).css({ top: pos.top + from_y - 0 * dy, left: pos.left + from_x - 0 * dx });
- $("#" + arrow.d1v).css({ top: pos.top + to_y + 0 * dy, left: pos.left + to_x + 0 * dx });
-
- if (arrow.connection1) {
- jsPlumb.detach(arrow.connection1);
- }
- if (arrow.connection2) {
- jsPlumb.detach(arrow.connection2);
- }
- arrow.connection1 = jsPlumb.connect({
- source: arrow.s1,
- target: arrow.d1,
- connector:["Straight"],
- cssClass:"c1",
- endpoint:"Blank",
- endpointClass:"c1Endpoint",
- anchor:"Continuous",
- paintStyle:{
- lineWidth:line_width,
- strokeStyle:arrow.fg_color,
- outlineWidth:1,
- outlineColor:"#666",
- opacity:"60%"
- }
- });
- arrow.connection2 = jsPlumb.connect({
- source: arrow.s1v,
- target: arrow.d1v,
- connector:["Straight"],
- cssClass:"vir",
- endpoint:"Blank",
- endpointClass:"c1Endpoint",
- anchor:"Continuous",
- paintStyle:{
- lineWidth:0,
- strokeStyle:arrow.fg_color,
- outlineWidth:0,
- outlineColor:"#666",
- },
- overlays : [
- ["Arrow", {
- cssClass:"l1arrow",
- location:1.0,
- width: arrow_size,
- length: arrow_size,
- paintStyle: {
- lineWidth:line_width,
- strokeStyle:"#000",
- },
- }]
- ]
- });
+ var SVG_NS = "http://www.w3.org/2000/svg";
+ var XHTML_NS = "http://www.w3.org/1999/xhtml";
+ var svg = document.createElementNS(SVG_NS, "svg");
+ svg.setAttribute("width", $("#board").width());
+ svg.setAttribute("height", $("#board").height());
+ svg.setAttribute("style", "position: absolute");
+ svg.setAttribute("position", "absolute");
+ svg.setAttribute("version", "1.1");
+ svg.setAttribute("class", "c1");
+ svg.setAttribute("xmlns", XHTML_NS);
+
+ var x1 = from_x;
+ var y1 = from_y;
+ var x2 = to_x;
+ var y2 = to_y;
+
+ // Draw the line.
+ var outline = document.createElementNS(SVG_NS, "path");
+ outline.setAttribute("d", "M " + point_from_start(x1, y1, x2, y2, arrow_size / 2, 0) + " L " + point_from_end(x1, y1, x2, y2, -arrow_size / 2, 0));
+ outline.setAttribute("xmlns", XHTML_NS);
+ outline.setAttribute("stroke", "#666");
+ outline.setAttribute("stroke-width", line_width + 2);
+ outline.setAttribute("fill", "none");
+ svg.appendChild(outline);
+
+ var path = document.createElementNS(SVG_NS, "path");
+ path.setAttribute("d", "M " + point_from_start(x1, y1, x2, y2, arrow_size / 2, 0) + " L " + point_from_end(x1, y1, x2, y2, -arrow_size / 2, 0));
+ path.setAttribute("xmlns", XHTML_NS);
+ path.setAttribute("stroke", arrow.fg_color);
+ path.setAttribute("stroke-width", line_width);
+ path.setAttribute("fill", "none");
+ svg.appendChild(path);
+
+ // Then the arrow head.
+ var head = document.createElementNS(SVG_NS, "path");
+ head.setAttribute("d",
+ "M " + point_from_end(x1, y1, x2, y2, 0, 0) +
+ " L " + point_from_end(x1, y1, x2, y2, -arrow_size, -arrow_size / 2) +
+ " L " + point_from_end(x1, y1, x2, y2, -arrow_size * .623, 0.0) +
+ " L " + point_from_end(x1, y1, x2, y2, -arrow_size, arrow_size / 2) +
+ " L " + point_from_end(x1, y1, x2, y2, 0, 0));
+ head.setAttribute("xmlns", XHTML_NS);
+ head.setAttribute("stroke", "#000");
+ head.setAttribute("stroke-width", "1");
+ head.setAttribute("fill", "#f66");
+ svg.appendChild(head);
+
+ $(svg).css({ top: pos.top, left: pos.left });
+ document.body.appendChild(svg);
+ arrow.svg = svg;
}
var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_size) {
// Create arrow.
var arrow = {
- s1: add_target(),
- d1: add_target(),
- s1v: add_target(),
- d1v: add_target(),
from_col: from_col,
from_row: from_row,
to_col: to_col,
to_row: to_row,
line_width: line_width,
- arrow_size: arrow_size,
+ arrow_size: arrow_size,
fg_color: fg_color
};
arrows.push(arrow);
}
+var compare_by_sort_key = function(refutation_lines, a, b) {
+ var ska = refutation_lines[a].sort_key;
+ var skb = refutation_lines[b].sort_key;
+ if (ska < skb) return -1;
+ if (ska > skb) return 1;
+ return 0;
+};
+
+var compare_by_score = function(refutation_lines, a, b) {
+ var sa = parseInt(refutation_lines[b].score_sort_key);
+ var sb = parseInt(refutation_lines[a].score_sort_key);
+ return sa - sb;
+}
+
// Fake multi-PV using the refutation lines. Find all “relevant” moves,
// sorted by quality, descending.
var find_nonstupid_moves = function(data, margin) {
moves.push(move);
}
}
- moves = moves.sort(function(a, b) { return parseInt(data.refutation_lines[b].score_sort_key) - parseInt(data.refutation_lines[a].score_sort_key); });
+ moves = moves.sort(function(a, b) { return compare_by_score(data.refutation_lines, a, b) });
moves.unshift(data.pv_uci[0]);
return moves;
return String(x).split('').reverse().join('').replace(/(\d{3}\B)/g, '$1,').split('').reverse().join('');
}
-var print_pv = function(pretty_pv, move_num, toplay, limit) {
+var print_pv = function(fen, uci_pv, pretty_pv, move_num, toplay, limit) {
+ display_lines.push({
+ start_fen: fen,
+ uci_pv: uci_pv,
+ pretty_pv: pretty_pv
+ });
+
var pv = '';
var i = 0;
if (toplay == 'B') {
- pv = move_num + '. … ' + pretty_pv[0];
+ var move = "<a class=\"move\" href=\"javascript:show_line(" + (display_lines.length - 1) + ", " + 0 + ");\">" + pretty_pv[0] + "</a>";
+ pv = move_num + '. … ' + move;
toplay = 'W';
++i;
+ ++move_num;
}
- ++move_num;
for ( ; i < pretty_pv.length; ++i) {
+ var move = "<a class=\"move\" href=\"javascript:show_line(" + (display_lines.length - 1) + ", " + i + ");\">" + pretty_pv[i] + "</a>";
+
if (toplay == 'W') {
if (i > limit) {
return pv + ' (…)';
if (pv != '') {
pv += ' ';
}
- pv += move_num + '. ' + pretty_pv[i];
+ pv += move_num + '. ' + move;
++move_num;
toplay = 'B';
} else {
- pv += ' ' + pretty_pv[i];
+ pv += ' ' + move;
toplay = 'W';
}
}
return pv;
}
-var compare_by_sort_key = function(data, a, b) {
- var ska = data.refutation_lines[a].sort_key;
- var skb = data.refutation_lines[b].sort_key;
- if (ska < skb) return -1;
- if (ska > skb) return 1;
- return 0;
-};
-
var update_highlight = function() {
$("#board").find('.square-55d63').removeClass('nonuglyhighlight');
- if (highlight_from !== undefined && highlight_to !== undefined) {
+ if (current_display_line === null && highlight_from !== undefined && highlight_to !== undefined) {
$("#board").find('.square-' + highlight_from).addClass('nonuglyhighlight');
$("#board").find('.square-' + highlight_to).addClass('nonuglyhighlight');
}
}
+var update_refutation_lines = function(board) {
+ if (display_lines.length > 1) {
+ display_lines = [ display_lines[0] ];
+ }
+
+ var tbl = $("#refutationlines");
+ tbl.empty();
+
+ var moves = [];
+ for (var move in refutation_lines) {
+ moves.push(move);
+ }
+ var compare = sort_refutation_lines_by_score ? compare_by_score : compare_by_sort_key;
+ moves = moves.sort(function(a, b) { return compare(refutation_lines, a, b) });
+ for (var i = 0; i < moves.length; ++i) {
+ var line = refutation_lines[moves[i]];
+
+ var tr = document.createElement("tr");
+
+ var move_td = document.createElement("td");
+ tr.appendChild(move_td);
+ $(move_td).addClass("move");
+ if (line.pv_uci.length == 0) {
+ $(move_td).text(line.pretty_move);
+ } else {
+ var move = "<a class=\"move\" href=\"javascript:show_line(" + display_lines.length + ", " + 0 + ");\">" + line.pretty_move + "</a>";
+ $(move_td).html(move);
+ }
+
+ var score_td = document.createElement("td");
+ tr.appendChild(score_td);
+ $(score_td).addClass("score");
+ $(score_td).text(line.pretty_score);
+
+ var depth_td = document.createElement("td");
+ tr.appendChild(depth_td);
+ $(depth_td).addClass("depth");
+ $(depth_td).text("d" + line.depth);
+
+ var pv_td = document.createElement("td");
+ tr.appendChild(pv_td);
+ $(pv_td).addClass("pv");
+ $(pv_td).html(print_pv(fen, line.pv_uci, line.pv_pretty, move_num, toplay, 10));
+
+ tbl.append(tr);
+ }
+
+ // Make one of the links clickable and the other nonclickable.
+ if (sort_refutation_lines_by_score) {
+ $("#sortbyscore0").html("<a href=\"javascript:resort_refutation_lines(0)\">Move</a>");
+ $("#sortbyscore1").html("<strong>Score</strong>");
+ } else {
+ $("#sortbyscore0").html("<strong>Move</strong>");
+ $("#sortbyscore1").html("<a href=\"javascript:resort_refutation_lines(1)\">Score</a>");
+ }
+}
+
var update_board = function(board, data, num_viewers) {
+ display_lines = [];
+
// The headline.
var headline = 'Analysis';
if (data.position.last_move !== 'none') {
- headline += ' after ' + data.position.move_num + '. ';
+ headline += ' after '
if (data.position.toplay == 'W') {
- headline += '… ';
+ headline += (data.position.move_num-1) + '… ';
+ } else {
+ headline += data.position.move_num + '. ';
}
headline += data.position.last_move;
}
}
// Update the board itself.
- board.position(data.position.fen);
+ fen = data.position.fen;
+ update_displayed_line();
if (data.position.last_move_uci) {
highlight_from = data.position.last_move_uci.substr(0, 2);
update_highlight();
// Print the PV.
- var pv = print_pv(data.pv_pretty, data.position.move_num, data.position.toplay);
- $("#pv").text(pv);
+ $("#pv").html(print_pv(data.position.fen, data.pv_uci, data.pv_pretty, data.position.move_num, data.position.toplay));
// Update the PV arrow.
clear_arrows();
}
}
- // Show the refutation lines.
- var tbl = $("#refutationlines");
- tbl.empty();
+ // Update the refutation lines.
+ fen = data.position.fen;
+ move_num = data.position.move_num;
+ toplay = data.position.toplay;
+ refutation_lines = data.refutation_lines;
+ update_refutation_lines(board);
- moves = [];
- for (var move in data.refutation_lines) {
- moves.push(move);
- }
- moves = moves.sort(function(a, b) { return compare_by_sort_key(data, a, b) });
- for (var i = 0; i < moves.length; ++i) {
- var line = data.refutation_lines[moves[i]];
+ // Next update.
+ setTimeout(function() { request_update(board); }, 100);
+}
- var tr = document.createElement("tr");
+var resort_refutation_lines = function(sort_by_score) {
+ sort_refutation_lines_by_score = sort_by_score;
+ update_refutation_lines(board);
+}
- var move_td = document.createElement("td");
- tr.appendChild(move_td);
- $(move_td).addClass("move");
- $(move_td).text(line.pretty_move);
+var show_line = function(line_num, move_num) {
+ if (line_num == -1) {
+ current_display_line = null;
+ current_display_move = null;
+ } else {
+ current_display_line = display_lines[line_num];
+ current_display_move = move_num;
+ }
+ update_displayed_line();
+ update_highlight();
+ redraw_arrows();
+}
- var score_td = document.createElement("td");
- tr.appendChild(score_td);
- $(score_td).addClass("score");
- $(score_td).text(line.pretty_score);
+var prev_move = function() {
+ --current_display_move;
+ update_displayed_line();
+}
- var depth_td = document.createElement("td");
- tr.appendChild(depth_td);
- $(depth_td).addClass("depth");
- $(depth_td).text("d" + line.depth);
+var next_move = function() {
+ ++current_display_move;
+ update_displayed_line();
+}
- var pv_td = document.createElement("td");
- tr.appendChild(pv_td);
- $(pv_td).addClass("pv");
- $(pv_td).text(print_pv(line.pv_pretty, data.position.move_num, data.position.toplay, 10));
+var update_displayed_line = function() {
+ if (current_display_line === null) {
+ $("#linenav").hide();
+ $("#linemsg").show();
+ board.position(fen);
+ return;
+ }
- tbl.append(tr);
+ $("#linenav").show();
+ $("#linemsg").hide();
+
+ if (current_display_move == 0) {
+ $("#prevmove").html("Previous");
+ } else {
+ $("#prevmove").html("<a href=\"javascript:prev_move();\">Previous</a></span>");
+ }
+ if (current_display_move == current_display_line.uci_pv.length - 1) {
+ $("#nextmove").html("Next");
+ } else {
+ $("#nextmove").html("<a href=\"javascript:next_move();\">Next</a></span>");
}
- // Next update.
- setTimeout(function() { request_update(board); }, 100);
+ hiddenboard.position(current_display_line.start_fen, false);
+ for (var i = 0; i <= current_display_move; ++i) {
+ var move = current_display_line.uci_pv[i];
+ move = move.substr(0, 2) + "-" + move.substr(2, 4);
+ hiddenboard.move(move, false);
+ }
+ board.position(hiddenboard.position());
}
var init = function() {
// Create board.
board = new ChessBoard('board', 'start');
+ hiddenboard = new ChessBoard('hiddenboard', 'start');
request_update(board);
$(window).resize(function() {
projects / remoteglot / blobdiff