@quartic/bokehjs
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Interactive, novel data visualization
72 lines (71 loc) • 3.19 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
var extend = function (child, parent) { for (var key in parent) {
if (hasProp.call(parent, key))
child[key] = parent[key];
} function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; }, hasProp = {}.hasOwnProperty;
var model_1 = require("../../model");
var p = require("core/properties");
exports.LinearMapper = (function (superClass) {
extend(LinearMapper, superClass);
function LinearMapper() {
return LinearMapper.__super__.constructor.apply(this, arguments);
}
LinearMapper.prototype.initialize = function (attrs, options) {
LinearMapper.__super__.initialize.call(this, attrs, options);
this.define_computed_property('mapper_state', this._mapper_state, true);
this.add_dependencies('mapper_state', this, ['source_range', 'target_range']);
this.add_dependencies('mapper_state', this.source_range, ['start', 'end']);
return this.add_dependencies('mapper_state', this.target_range, ['start', 'end']);
};
LinearMapper.getters({
mapper_state: function () {
return this._get_computed('mapper_state');
}
});
LinearMapper.prototype.map_to_target = function (x) {
var offset, ref, scale;
ref = this.mapper_state, scale = ref[0], offset = ref[1];
return scale * x + offset;
};
LinearMapper.prototype.v_map_to_target = function (xs) {
var i, idx, len, offset, ref, result, scale, x;
ref = this.mapper_state, scale = ref[0], offset = ref[1];
result = new Float64Array(xs.length);
for (idx = i = 0, len = xs.length; i < len; idx = ++i) {
x = xs[idx];
result[idx] = scale * x + offset;
}
return result;
};
LinearMapper.prototype.map_from_target = function (xprime) {
var offset, ref, scale;
ref = this.mapper_state, scale = ref[0], offset = ref[1];
return (xprime - offset) / scale;
};
LinearMapper.prototype.v_map_from_target = function (xprimes) {
var i, idx, len, offset, ref, result, scale, xprime;
ref = this.mapper_state, scale = ref[0], offset = ref[1];
result = new Float64Array(xprimes.length);
for (idx = i = 0, len = xprimes.length; i < len; idx = ++i) {
xprime = xprimes[idx];
result[idx] = (xprime - offset) / scale;
}
return result;
};
LinearMapper.prototype._mapper_state = function () {
var offset, scale, source_end, source_start, target_end, target_start;
source_start = this.source_range.start;
source_end = this.source_range.end;
target_start = this.target_range.start;
target_end = this.target_range.end;
scale = (target_end - target_start) / (source_end - source_start);
offset = -(scale * source_start) + target_start;
return [scale, offset];
};
LinearMapper.internal({
source_range: [p.Any],
target_range: [p.Any]
});
return LinearMapper;
})(model_1.Model);