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Save zoom level and translation

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This commit is contained in:
Zachary Tong 2013-04-05 16:39:47 -04:00
parent 49b383fd3c
commit 0f77646ead
1 changed files with 42 additions and 29 deletions
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71
panels/map2/module.js
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@ -12,18 +12,20 @@ angular.module('kibana.map2', [])
group: "default",
index_limit: 0,
display: {
translate:[0, 0],
scale:-1,
data: {
samples: 1000
},
geopoints: {
enabled: true,
enabledText: "Enabled",
pointSize: 1,
pointSize: 0.3,
pointAlpha: 0.6
},
binning: {
enabled: true,
hexagonSize: 10,
hexagonSize: 2,
hexagonAlpha: 1.0,
areaEncoding: true,
areaEncodingField: "primary",
@ -218,11 +220,11 @@ angular.module('kibana.map2', [])
console.log("draw map", width, height);
//Scale the map by whichever dimension is the smallest, helps to make sure the whole map is shown
var scale = (width > height) ? (height / 2 / Math.PI) : (width / 2 / Math.PI);
var projection = d3.geo.mercator()
.translate([0, 0])
.translate([0,0])
.scale(scale);
var zoom = d3.behavior.zoom()
@ -272,40 +274,38 @@ angular.module('kibana.map2', [])
});
var binPoints = [];
//primary field is just binning raw counts
//secondary field is binning some metric like mean/median/total. Hexbins doesn't support that,
//so we cheat a little and just add more points to compensate.
//However, we don't want to add a million points, so normalize against the largest value
if (scope.panel.display.binning.areaEncodingField === 'secondary') {
var max = Math.max.apply(Math, _.map(scope.data, function(k,v){return k;})),
scale = 10/max;
_.map(scope.data, function (k, v) {
var decoded = geohash.decode(v);
return _.map(_.range(0, k*scale), function(a,b) {
binPoints.push(projection([decoded.longitude, decoded.latitude]));
})
});
} else {
binPoints = points;
}
//hexagonal binning
if (scope.panel.display.binning.enabled) {
var binPoints = [];
//primary field is just binning raw counts
//secondary field is binning some metric like mean/median/total. Hexbins doesn't support that,
//so we cheat a little and just add more points to compensate.
//However, we don't want to add a million points, so normalize against the largest value
if (scope.panel.display.binning.areaEncodingField === 'secondary') {
var max = Math.max.apply(Math, _.map(scope.data, function(k,v){return k;})),
scale = 10/max;
_.map(scope.data, function (k, v) {
var decoded = geohash.decode(v);
return _.map(_.range(0, k*scale), function(a,b) {
binPoints.push(projection([decoded.longitude, decoded.latitude]));
})
});
} else {
binPoints = points;
}
var hexbin = d3.hexbin()
.size([width, height])
.radius(scope.panel.display.binning.hexagonSize);
//bin and sort the points, so we can set the various ranges appropriately
var binnedPoints = hexbin(binPoints).sort(function(a, b) { return b.length - a.length; });;
console.log(binnedPoints);
console.log("binnedpoints",binnedPoints);
//clean up some memory
binPoints = [];
@ -359,6 +359,14 @@ console.log(binnedPoints);
}
console.log("initial", scope.panel.display.scale, scope.panel.display.translate);
if (scope.panel.display.scale != -1) {
zoom.scale(scope.panel.display.scale).translate(scope.panel.display.translate);
g.style("stroke-width", 1 / scope.panel.display.scale).attr("transform", "translate(" + scope.panel.display.translate + ") scale(" + scope.panel.display.scale + ")");
//svg.redraw();
}
});
function move() {
@ -367,7 +375,12 @@ console.log(binnedPoints);
t[0] = Math.min(width / 2 * (s - 1), Math.max(width / 2 * (1 - s), t[0]));
t[1] = Math.min(height / 2 * (s - 1) + 230 * s, Math.max(height / 2 * (1 - s) - 230 * s, t[1]));
zoom.translate(t);
scope.panel.display.translate = t;
scope.panel.display.scale = s;
g.style("stroke-width", 1 / s).attr("transform", "translate(" + t + ")scale(" + s + ")");
console.log("move", scope.panel.display.scale, scope.panel.display.translate);
}
})