molstar
Version:
A comprehensive macromolecular library.
84 lines • 3.76 kB
JavaScript
;
/**
* Copyright (c) 2018-2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author Alexander Rose <alexander.rose@weirdbyte.de>
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.ColorScale = exports.DefaultColorScaleProps = void 0;
var tslib_1 = require("tslib");
var color_1 = require("./color");
var lists_1 = require("./lists");
var mol_util_1 = require("../../mol-util");
var legend_1 = require("../legend");
var int_1 = require("../../mol-data/int");
var interpolate_1 = require("../../mol-math/interpolate");
exports.DefaultColorScaleProps = {
domain: [0, 1],
reverse: false,
listOrName: 'red-yellow-blue',
minLabel: '',
maxLabel: '',
};
var ColorScale;
(function (ColorScale) {
function create(props) {
var _a = (0, tslib_1.__assign)((0, tslib_1.__assign)({}, exports.DefaultColorScaleProps), props), domain = _a.domain, reverse = _a.reverse, listOrName = _a.listOrName;
var list = typeof listOrName === 'string' ? (0, lists_1.getColorListFromName)(listOrName).list : listOrName;
var colors = reverse ? list.slice().reverse() : list;
var count1 = colors.length - 1;
var diff = 0, min = 0, max = 0;
function setDomain(_min, _max) {
min = _min;
max = _max;
diff = (max - min) || 1;
}
setDomain(domain[0], domain[1]);
var minLabel = (0, mol_util_1.defaults)(props.minLabel, min.toString());
var maxLabel = (0, mol_util_1.defaults)(props.maxLabel, max.toString());
var color;
var hasOffsets = colors.every(function (c) { return Array.isArray(c); });
if (hasOffsets) {
var sorted = (0, tslib_1.__spreadArray)([], colors, true);
sorted.sort(function (a, b) { return a[1] - b[1]; });
var src_1 = sorted.map(function (c) { return c[0]; });
var off_1 = int_1.SortedArray.ofSortedArray(sorted.map(function (c) { return c[1]; }));
var max_1 = src_1.length - 1;
color = function (v) {
var t = (0, interpolate_1.clamp)((v - min) / diff, 0, 1);
var i = int_1.SortedArray.findPredecessorIndex(off_1, t);
if (i === 0) {
return src_1[min];
}
else if (i > max_1) {
return src_1[max_1];
}
var o1 = off_1[i - 1], o2 = off_1[i];
var t1 = (0, interpolate_1.clamp)((t - o1) / (o2 - o1), 0, 1); // TODO: cache the deltas?
return color_1.Color.interpolate(src_1[i - 1], src_1[i], t1);
};
}
else {
color = function (value) {
var t = Math.min(colors.length - 1, Math.max(0, ((value - min) / diff) * count1));
var tf = Math.floor(t);
var c1 = colors[tf];
var c2 = colors[Math.ceil(t)];
return color_1.Color.interpolate(c1, c2, t - tf);
};
}
return {
color: color,
colorToArray: function (value, array, offset) {
color_1.Color.toArray(color(value), array, offset);
},
normalizedColorToArray: function (value, array, offset) {
color_1.Color.toArrayNormalized(color(value), array, offset);
},
setDomain: setDomain,
get legend() { return (0, legend_1.ScaleLegend)(minLabel, maxLabel, colors); }
};
}
ColorScale.create = create;
})(ColorScale = exports.ColorScale || (exports.ColorScale = {}));
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