CN109144623A - A kind of publication image generation method based on cloud platform - Google Patents

Abstract

A kind of publication image generation method based on cloud platform: to a challenge in Computer Graphic Demonstration --- the blanking problem of hidden line is studied.And binding signal analysis in signal three dimensional graph display problem, elaborate based on painter's algorithm figure quickly-blanking processing 3-D graphic generation method.On this basis, the ingenious library function using in VS2008 has inquired into three-dimensional grid map generalization method, and has conveniently realized very much the stretching of 3-D graphic, rotation.

Description

A kind of publication image generation method based on cloud platform

Technical field

The present invention relates to a kind of publication image generation method based on cloud platform, in particular to be based on SAAS technology Graphic.

Background technique

With the appearance of the high speed development and cloud computing technology of information technology, all information datas will all be placed on Yun Zhongbao Graph data is included, but generally our graphic hotsopt is all to import data to Excel electrical form, then uses Excel Built-in drawing function manually generates figure.This way is suitable for majority of case, but if basic data is frequently changed, Then manual creation figure may become soon dry as dust, and for these reasons, my invention is a kind of simple and quick Image generation method.

Summary of the invention

A kind of publication image generation method based on cloud platform；This method is using in VS2008 DynamicDataDisplay class libraries and customized BugInfo class, LoadBugInfo method and building array etc. are some The method is realized in example operation, this step:

(1) states a general type list object bugInfoList first, and uses the assisting device method of an application definition Virtual data in file BugInfo.txt is filled into the list by (entitled LoadBugInfo);

public class BugInfo {

public DateTime date;

public int numberOpen;

public int numberClosed;

public BugInfo(DateTime date, int numberOpen, int numberClosed) {

this.date = date;

this.numberOpen = numberOpen;

this.numberClosed = numberClosed;

}

}

File is opened using LoadBugInfo method and traverses this document, is analyzed each field, is then instantiated BugInfo Object, and by the storage of each BugInfo object into the results list.

private static List<BugInfo> LoadBugInfo(string fileName)

{

var result = new List<BugInfo>();

FileStream fs = new FileStream(fileName, FileMode.Open);

StreamReader sr = new StreamReader(fs);

string line = "";

while ((line = sr.ReadLine()) != null)

{

string[] pieces = line.Split(':');

DateTime d = DateTime.Parse(pieces[0]);

int numopen = int.Parse(pieces[1]);

int numclosed = int.Parse(pieces[2]);

BugInfo bi = new BugInfo(d, numopen, numclosed);

result.Add(bi);

}

sr.Close();

fs.Close();

return result;

}

All rows in data file are read in into a character string dimension using File.ReadAllLines method, to three Array state and assignment

DateTime[] dates = new DateTime[bugInfoList.Count];

int[] numberOpen = new int[bugInfoList.Count];

int[] numberClosed = new int[bugInfoList.Count];

for (int i = 0; i < bugInfoList.Count; ++i)

{

dates[i] = bugInfoList[i].date;

numberOpen[i] = bugInfoList[i].numberOpen;

numberClosed[i] = bugInfoList[i].numberClosed;

}

Array of data is converted to special EnumerableDataSource type

var datesDataSource = new EnumerableDataSource<DateTime>(dates);

datesDataSource.SetXMapping(x => dateAxis.ConvertToDouble(x));

var numberOpenDataSource = new EnumerableDataSource<int>(numberOpen);

numberOpenDataSource.SetYMapping(y => y);

var numberClosedDataSource = new EnumerableDataSource<int>(numberClosed);

numberClosedDataSource.SetYMapping(y => y);

(2) for the library DynamicDataDisplay, all data to be drawn all are necessary for unified format.Only by three Array of data passes to general type EnumerableDataSource constructed fuction.Further, it is necessary to inform the library and each data The associated axis in source (x axis or y axis).SetXMapping and SetYMapping method receives to entrust method as ginseng Number.Lambda expression formula has been used to create anonymous methods, rather than has defined explicit commission.DynamicDataDisplay The basic axis data type in library is double.SetXMapping and SetYMapping method is by my special data type It is mapped to double type.

On x axis, using ConvertToDouble method by DateTime data explicit conversion be double Type.On y axis, only writing y=> y(pronounces " y switchs to y " for I), it is output by input int y implicit conversion double y.I can also (y=> Convert.ToDouble (y) carries out type come explicit by writing SetYMapping Mapping.It can arbitrarily select x and y as the parameter of lambda expression formula, that is, arbitrary parameter title can be used in I.

AddLineGraph method receives CompositeDataSource, and the latter defines the mistake to be drawn and has Close the information of exact drafting mode.Herein, I indicates that the plotter object of entitled plotter executes following operation: using The blue lines that thickness is 2 draw a figure, and placement has red frame and the red circle filled and size is 10 Label, and add serial title Number bugs open.As one of many alternative approach (plotter.AddLineGraph (compositeDataSource1, Colors.Red, 1, " Number Open ")) can So that the thin red lines for being used to draw not tape label can also create dotted line rather than solid line:

Pen dashedPen = new Pen(Brushes.Magenta, 3);

dashedPen.DashStyle = DashStyles.DashDot;

plotter.AddLineGraph(compositeDataSource1, dashedPen,

new PenDescription("Open bugs"));

Claims (2)

1. a kind of publication image generation method based on cloud platform: this method mainly utilizes in VS2008 The library DynamicDataDisplay type.

2. image generation method according to claim 1, the method is mainly utilized in computer language VS2008 Some Type Synthesis in the type of the library DynamicDataDisplay utilize ChartPlotter element, the general type list of definition Object bugInfoList, special EnumerableDataSource type and building array, by assignment in SetXMapping and SetYMapping method in DynamicDataDisplay class libraries.