Graph Rotation
Suppose you want to rotate an object by an angle è counterclockwise. First, suppose you have a point
(x1, y1) that you want to rotate by an angle è to get to the point (x2, y2), as shown below.
- May 27 Fri 2016 10:14
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Graph Rotation
Graph Rotation
Suppose you want to rotate an object by an angle è counterclockwise. First, suppose you have a point
(x1, y1) that you want to rotate by an angle è to get to the point (x2, y2), as shown below.
- May 09 Mon 2016 10:39
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WIFI Scan後指定AP連線
想要在APP上指定網路連線到某個路由器上(AP),在IOS系統上是天方夜譚,Windows上易如反掌.
這就是捨棄用IOS開發這專案,改採用Windows來開發的主因,否則如此龐大的專案(APP程式,Server程式,兩個單晶片的程式,採用有線無線互相連結),如果採用IOS只是搞屎自己.
微軟本身就提供這個Library (Windows.Device.WiFi).
這就是捨棄用IOS開發這專案,改採用Windows來開發的主因,否則如此龐大的專案(APP程式,Server程式,兩個單晶片的程式,採用有線無線互相連結),如果採用IOS只是搞屎自己.
微軟本身就提供這個Library (Windows.Device.WiFi).
- Jan 25 Sat 2014 15:28
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Arduino 網路
#include <SPI.h>
#include <Dhcp.h>
#include <Dns.h>
#include <Ethernet.h>
#include <EthernetClient.h>
#include <EthernetServer.h>
#include <EthernetUdp.h>
#include <util.h>
#include <Dhcp.h>
#include <Dns.h>
#include <Ethernet.h>
#include <EthernetClient.h>
#include <EthernetServer.h>
#include <EthernetUdp.h>
#include <util.h>
- Apr 26 Fri 2013 13:55
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ScatterGraph上做Zoom,Pan,Restore
- Jun 17 Sun 2012 00:45
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USB2I2C Part2
前一篇提到使用USBI2C去傳送跟接收資料,只有使用到USBIO_StreamI2C這個函數,一般場合已足夠使用,可是我的裝置接收到指令需要200ms才能回覆這時就麻煩了.只好自己試試看了,終於試出來了.
USBIO_StreamI2C(mIndex, bytes.Length, bytes, 0,null); //先送出寫入的指令
Thread.Sleep(iDelayTime); //延遲段時間
I2C_IssueStart(mIndex); //I2C Start
I2C_OutByteCheckAck(mIndex, (byte)(bytes[0] + 1)); //送出讀資料的指令
I2C_InBlockByAck(mIndex, irecvLen - 1, ref iBuff);//接收資料並送出ACK
I2C_InByteNoAck(mIndex, ref rebyte); //接收資料後送出NACK
I2C_IssueStop(mIndex); //I2C Stop
- May 22 Tue 2012 22:14
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String.Count<>
string[] strs = { "a", "a", "a", "a", "e", "e", "e", "i", "o", "o", "u" };
int countA = strs.Count(p => p == "a");
int countA = strs.Count(p => p == "a");
- May 07 Mon 2012 23:11
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USB2I2C
由於常常要發送I2c command 給裝置,於是上網找了一個小小的USB轉I2C的小轉版,這顆IC是大陸廠家做的也提供一些 sample code,就是沒.NET的.只好拿VB6的來改.
我是用Win7 64bit, 歐賣尬.數位簽章出問題,看一下廠商提供的說明,開機時要按下F8選 "停用驅動程式強制簽章".
厚真是有夠麻煩,上網查了一下好像有工具(Driver Signature Enforcement Overrider)可以用,結論是無效的.
乖乖的回去按F8囉.
我是用Win7 64bit, 歐賣尬.數位簽章出問題,看一下廠商提供的說明,開機時要按下F8選 "停用驅動程式強制簽章".
厚真是有夠麻煩,上網查了一下好像有工具(Driver Signature Enforcement Overrider)可以用,結論是無效的.
乖乖的回去按F8囉.
- Feb 17 Thu 2011 16:41
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共用按鈕
private void btnRefAll_Click(object sender, EventArgs e)
{
string strTxt = ((Button)sender).Name;
int iorder = int.Parse(strTxt.Substring(strTxt.Length - 1)) - 1;
btnRef[iorder].Text = pmPower.ToString();
}
{
string strTxt = ((Button)sender).Name;
int iorder = int.Parse(strTxt.Substring(strTxt.Length - 1)) - 1;
btnRef[iorder].Text = pmPower.ToString();
}
- Nov 06 Sat 2010 14:39
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Fleet Week
- Nov 04 Thu 2010 05:54
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C# VS MathCad
工作需求須用到 MathCad 本來想用 C# 來處理,無奈太多數學 function 不知道如何轉,如 cspline,interp,genfit..想把這些轉成C#,饒了我吧.
轉個彎,C#好像能控制MathCad.那就開始囉.
拜一下孤狗,資料真的是很少.幾乎所有的資料都在 PlanePTC Community 這網站.
Mathcad.Application mc = new Mathcad.Application();
Mathcad.Worksheets wk;
Mathcad.Worksheet ws = new Mathcad.Worksheet();
- Jun 29 Tue 2010 16:34
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跨執行續作業無效 Lambda
private Action<Control, string> p = (ctl, msg) => { if (ctl is Label) (ctl as Label).Text = msg; };
private void button1_Click(object sender, EventArgs e)
{
new Thread(MyMethod).Start();
}
private void MyMethod()
{
Invoke(p,label1,"OK");
}
private void button1_Click(object sender, EventArgs e)
{
new Thread(MyMethod).Start();
}
private void MyMethod()
{
Invoke(p,label1,"OK");
}
