alex/restaurant-search
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Better animation

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Alex Yatskov 2014-11-08 20:10:51 +09:00
parent 3dd82a91a2
commit b1441b5175
1 changed files with 32 additions and 30 deletions
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60
client/scripts/grapher.js
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@ -124,7 +124,7 @@
).attr({'dominant-baseline': 'middle', 'text-anchor': 'middle'});
// indicator
var range = computeIndicatorRange();
var range = computeIndicatorRange(_data.value);
_elements.indicator = _canvas.rect(
_tickSize, range.min, _width - (_densitySize + _tickSize), (range.max - range.min)
).attr({cursor: 'crosshair', fill: computeIndicatorColor()}).click(clicked);
@ -149,23 +149,23 @@
Snap.format('t{x},{y}', {x: _index * (_width + _padding), y: 0})
);
updateShapes(true);
updateDensity();
}
function updateShapes(updateHints) {
if (updateHints) {
var fill = _data.hints.length === 0 ? _backdropColor : _canvas.gradient(decimateHints());
_elements.density.attr({ fill: fill });
}
var range = computeIndicatorRange();
function updateIndicator(value) {
var range = computeIndicatorRange(value);
_elements.indicator.attr({
y: range.min,
height: range.max - range.min,
fill: computeIndicatorColor()
fill: computeIndicatorColor(value)
});
}
function updateDensity() {
var fill = _data.hints.length === 0 ? _backdropColor : _canvas.gradient(decimateHints());
_elements.density.attr({ fill: fill });
}
function decimateHints() {
var colorStops = 'l(0,0,0,1)';
@ -214,47 +214,47 @@
}
function updateValue(value) {
var clamped = _range.clamp(value);
var valueOld = _data.value;
_data.value = _range.clamp(value);
if (_onValueChanged) {
_onValueChanged(_name, clamped);
_onValueChanged(_name, _data.value);
}
animateValueTo(clamped);
animateIndicator(valueOld, _data.value);
}
function animateValueTo(value) {
function animateIndicator(valueOld, valueNew) {
Snap.animate(
_data.value,
value,
valueOld,
valueNew,
function(value) {
_data.value = value;
updateShapes(false);
updateIndicator(value);
},
_easeTime,
mina.easeinout,
function() {
updateShapes(true);
// updateDensity();
}
);
}
function valueColorAdjust(color, offset) {
function valueColorAdjust(value, color, offset) {
var colorObj = tinycolor(color);
var rangeEnd = _data.value >= 0.0 ? _range.max : _range.min;
var rangeEnd = value >= 0.0 ? _range.max : _range.min;
var rangeMid = (_range.min + _range.max) / 2.0;
var rangeRat = (_data.value - rangeMid) / (rangeEnd - rangeMid);
var rangeRat = (value - rangeMid) / (rangeEnd - rangeMid);
var desatVal = Math.max(0.0, 1.0 - rangeRat + offset) * 100.0;
return colorObj.desaturate(desatVal).toHexString();
}
function computeIndicatorColor() {
var color = _data.value >= 0.0 ? _fillColorPos : _fillColorNeg;
return valueColorAdjust(color, _desatOffset);
function computeIndicatorColor(value) {
var color = value >= 0.0 ? _fillColorPos : _fillColorNeg;
return valueColorAdjust(value, color, _desatOffset);
}
function computeIndicatorRange() {
return new Range(valueToIndicator(0.0), valueToIndicator(_data.value));
function computeIndicatorRange(value) {
return new Range(valueToIndicator(0.0), valueToIndicator(value));
}
function valueToIndicator(scalar) {
@ -277,10 +277,12 @@
}
this.update = function(data, scale) {
_data.hints = data.hints;
var valueOld = _data.value;
_data = data;
_scale = scale;
animateValueTo(data.value);
animateIndicator(valueOld, _data.value);
};
this.enable = function(enable) {