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逐步完成前后端服务器

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zack
2025-09-09 15:00:30 +08:00
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frontend/node_modules/echarts/lib/processor/dataStack.js generated vendored Normal file
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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.
*/
/**
* AUTO-GENERATED FILE. DO NOT MODIFY.
*/
/*
* 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.
*/
import { createHashMap, each } from 'zrender/lib/core/util.js';
import { addSafe } from '../util/number.js';
// (1) [Caution]: the logic is correct based on the premises:
// data processing stage is blocked in stream.
// See <module:echarts/stream/Scheduler#performDataProcessorTasks>
// (2) Only register once when import repeatedly.
// Should be executed after series is filtered and before stack calculation.
export default function dataStack(ecModel) {
var stackInfoMap = createHashMap();
ecModel.eachSeries(function (seriesModel) {
var stack = seriesModel.get('stack');
// Compatible: when `stack` is set as '', do not stack.
if (stack) {
var stackInfoList = stackInfoMap.get(stack) || stackInfoMap.set(stack, []);
var data = seriesModel.getData();
var stackInfo = {
// Used for calculate axis extent automatically.
// TODO: Type getCalculationInfo return more specific type?
stackResultDimension: data.getCalculationInfo('stackResultDimension'),
stackedOverDimension: data.getCalculationInfo('stackedOverDimension'),
stackedDimension: data.getCalculationInfo('stackedDimension'),
stackedByDimension: data.getCalculationInfo('stackedByDimension'),
isStackedByIndex: data.getCalculationInfo('isStackedByIndex'),
data: data,
seriesModel: seriesModel
};
// If stacked on axis that do not support data stack.
if (!stackInfo.stackedDimension || !(stackInfo.isStackedByIndex || stackInfo.stackedByDimension)) {
return;
}
stackInfoList.length && data.setCalculationInfo('stackedOnSeries', stackInfoList[stackInfoList.length - 1].seriesModel);
stackInfoList.push(stackInfo);
}
});
stackInfoMap.each(calculateStack);
}
function calculateStack(stackInfoList) {
each(stackInfoList, function (targetStackInfo, idxInStack) {
var resultVal = [];
var resultNaN = [NaN, NaN];
var dims = [targetStackInfo.stackResultDimension, targetStackInfo.stackedOverDimension];
var targetData = targetStackInfo.data;
var isStackedByIndex = targetStackInfo.isStackedByIndex;
var stackStrategy = targetStackInfo.seriesModel.get('stackStrategy') || 'samesign';
// Should not write on raw data, because stack series model list changes
// depending on legend selection.
targetData.modify(dims, function (v0, v1, dataIndex) {
var sum = targetData.get(targetStackInfo.stackedDimension, dataIndex);
// Consider `connectNulls` of line area, if value is NaN, stackedOver
// should also be NaN, to draw a appropriate belt area.
if (isNaN(sum)) {
return resultNaN;
}
var byValue;
var stackedDataRawIndex;
if (isStackedByIndex) {
stackedDataRawIndex = targetData.getRawIndex(dataIndex);
} else {
byValue = targetData.get(targetStackInfo.stackedByDimension, dataIndex);
}
// If stackOver is NaN, chart view will render point on value start.
var stackedOver = NaN;
for (var j = idxInStack - 1; j >= 0; j--) {
var stackInfo = stackInfoList[j];
// Has been optimized by inverted indices on `stackedByDimension`.
if (!isStackedByIndex) {
stackedDataRawIndex = stackInfo.data.rawIndexOf(stackInfo.stackedByDimension, byValue);
}
if (stackedDataRawIndex >= 0) {
var val = stackInfo.data.getByRawIndex(stackInfo.stackResultDimension, stackedDataRawIndex);
// Considering positive stack, negative stack and empty data
if (stackStrategy === 'all' // single stack group
|| stackStrategy === 'positive' && val > 0 || stackStrategy === 'negative' && val < 0 || stackStrategy === 'samesign' && sum >= 0 && val > 0 // All positive stack
|| stackStrategy === 'samesign' && sum <= 0 && val < 0 // All negative stack
) {
// The sum has to be very small to be affected by the
// floating arithmetic problem. An incorrect result will probably
// cause axis min/max to be filtered incorrectly.
sum = addSafe(sum, val);
stackedOver = val;
break;
}
}
}
resultVal[0] = sum;
resultVal[1] = stackedOver;
return resultVal;
});
});
}