lepu-test-platform-web/node_modules/echarts/lib/chart/pie/pieLayout.js

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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
var _number = require("../../util/number");
var parsePercent = _number.parsePercent;
var linearMap = _number.linearMap;
var layout = require("../../util/layout");
var labelLayout = require("./labelLayout");
var zrUtil = require("zrender/lib/core/util");
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
var PI2 = Math.PI * 2;
var RADIAN = Math.PI / 180;
function getViewRect(seriesModel, api) {
return layout.getLayoutRect(seriesModel.getBoxLayoutParams(), {
width: api.getWidth(),
height: api.getHeight()
});
}
function _default(seriesType, ecModel, api, payload) {
ecModel.eachSeriesByType(seriesType, function (seriesModel) {
var data = seriesModel.getData();
var valueDim = data.mapDimension('value');
var viewRect = getViewRect(seriesModel, api);
var center = seriesModel.get('center');
var radius = seriesModel.get('radius');
if (!zrUtil.isArray(radius)) {
radius = [0, radius];
}
if (!zrUtil.isArray(center)) {
center = [center, center];
}
var width = parsePercent(viewRect.width, api.getWidth());
var height = parsePercent(viewRect.height, api.getHeight());
var size = Math.min(width, height);
var cx = parsePercent(center[0], width) + viewRect.x;
var cy = parsePercent(center[1], height) + viewRect.y;
var r0 = parsePercent(radius[0], size / 2);
var r = parsePercent(radius[1], size / 2);
var startAngle = -seriesModel.get('startAngle') * RADIAN;
var minAngle = seriesModel.get('minAngle') * RADIAN;
var validDataCount = 0;
data.each(valueDim, function (value) {
!isNaN(value) && validDataCount++;
});
var sum = data.getSum(valueDim); // Sum may be 0
var unitRadian = Math.PI / (sum || validDataCount) * 2;
var clockwise = seriesModel.get('clockwise');
var roseType = seriesModel.get('roseType');
var stillShowZeroSum = seriesModel.get('stillShowZeroSum'); // [0...max]
var extent = data.getDataExtent(valueDim);
extent[0] = 0; // In the case some sector angle is smaller than minAngle
var restAngle = PI2;
var valueSumLargerThanMinAngle = 0;
var currentAngle = startAngle;
var dir = clockwise ? 1 : -1;
data.each(valueDim, function (value, idx) {
var angle;
if (isNaN(value)) {
data.setItemLayout(idx, {
angle: NaN,
startAngle: NaN,
endAngle: NaN,
clockwise: clockwise,
cx: cx,
cy: cy,
r0: r0,
r: roseType ? NaN : r,
viewRect: viewRect
});
return;
} // FIXME 兼容 2.0 但是 roseType 是 area 的时候才是这样?
if (roseType !== 'area') {
angle = sum === 0 && stillShowZeroSum ? unitRadian : value * unitRadian;
} else {
angle = PI2 / validDataCount;
}
if (angle < minAngle) {
angle = minAngle;
restAngle -= minAngle;
} else {
valueSumLargerThanMinAngle += value;
}
var endAngle = currentAngle + dir * angle;
data.setItemLayout(idx, {
angle: angle,
startAngle: currentAngle,
endAngle: endAngle,
clockwise: clockwise,
cx: cx,
cy: cy,
r0: r0,
r: roseType ? linearMap(value, extent, [r0, r]) : r,
viewRect: viewRect
});
currentAngle = endAngle;
}); // Some sector is constrained by minAngle
// Rest sectors needs recalculate angle
if (restAngle < PI2 && validDataCount) {
// Average the angle if rest angle is not enough after all angles is
// Constrained by minAngle
if (restAngle <= 1e-3) {
var angle = PI2 / validDataCount;
data.each(valueDim, function (value, idx) {
if (!isNaN(value)) {
var layout = data.getItemLayout(idx);
layout.angle = angle;
layout.startAngle = startAngle + dir * idx * angle;
layout.endAngle = startAngle + dir * (idx + 1) * angle;
}
});
} else {
unitRadian = restAngle / valueSumLargerThanMinAngle;
currentAngle = startAngle;
data.each(valueDim, function (value, idx) {
if (!isNaN(value)) {
var layout = data.getItemLayout(idx);
var angle = layout.angle === minAngle ? minAngle : value * unitRadian;
layout.startAngle = currentAngle;
layout.endAngle = currentAngle + dir * angle;
currentAngle += dir * angle;
}
});
}
}
labelLayout(seriesModel, r, viewRect.width, viewRect.height, viewRect.x, viewRect.y);
});
}
module.exports = _default;