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).
- Apr 21 Thu 2016 15:55
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馬達控制
- Apr 21 Thu 2016 11:43
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那瑪夏 螢火蟲
那瑪夏賞螢步道有好幾條,達卡努瓦賞螢步道是裡面最長的一條,其實看一下Google地圖,這些步道串起來大概就是瑪雅聯絡道路.
今年開始收費,每個人繳100元保護費.這一百元值得,服務人員不是只導覽還相當注意遊客人身安全,拍到後面整個步道只剩下我們三人不願離開,想把握最後拍攝時光,服務人員開還貼心地留下收機號碼給我們緊急連絡用.
- May 11 Mon 2015 23:08
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荷花
- Jan 15 Thu 2015 11:35
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MDK 各型態所占空間大小
由於常常要計算空間大小,又在各種開發軟體間流竄,為方便查證,還是留下紀錄.
unsigned char a,b,c,d,e,f,g,h,i;
int main()
{
a=sizeof(char); //1 bytes
b=sizeof(short int); //2 bytes
c=sizeof(int); //4 bytes
d=sizeof(long); //4 bytes
e=sizeof(long int); //4 bytes
f=sizeof(float); //4 bytes
g=sizeof(double); //8 bytes
h=sizeof(unsigned int); //4 bytes
i=sizeof(unsigned long); //4 bytes
unsigned char a,b,c,d,e,f,g,h,i;
int main()
{
a=sizeof(char); //1 bytes
b=sizeof(short int); //2 bytes
c=sizeof(int); //4 bytes
d=sizeof(long); //4 bytes
e=sizeof(long int); //4 bytes
f=sizeof(float); //4 bytes
g=sizeof(double); //8 bytes
h=sizeof(unsigned int); //4 bytes
i=sizeof(unsigned long); //4 bytes
- Jan 04 Sun 2015 22:28
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南巡百年慶典煙火(廟會煙火)
- May 18 Sun 2014 22:22
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人像外拍-特別篇2
- Apr 23 Wed 2014 17:30
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Firefly
夜色剛暗,試拍一下.
這次攝影班行程表排到了螢火蟲之旅.反正也沒拍過螢火蟲,就照老師說的光圈給他開最大,ISO設定為800,曝光時間拉長為2分鐘.
整場拍下來,沒有攝影技巧,只有被蚊蟲叮咬.
- Apr 14 Mon 2014 12:36
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人像外拍 Part II
