C # drawing--Streamers

C # drawing--Streamers

Yang Heohong


//-------------------------------------

DrawStreamer.cs by Flycrane

//-------------------------------------



Using System;



Using System.Drawing;



Using System.Windows.Forms;






Class Drawstreamer:form



{



Publicstaticvoidmain ()



{



Application.Run (New Drawstreamer ());



}



Public Drawstreamer ()



{



text= "streamer pattern-flycrane";



Backcolor= Color.aliceblue;



Forecolor= Color.gold;



resizeredraw= true;



Width= 600;



Height= 350;



}






Protectedoverridevoid OnPaint (PaintEventArgs e)



{



Graphics mygraphics= E.graphics;



Pen mypen= New Pen (forecolor,2);




Center of the circle.



float ORIGINX=CLIENTSIZE.WIDTH/2;



float Originy=clientsize.height;





float x1,x2,y1;





Draw Streamer,which comprise series of horizontal line segment;

for (double a=0;a<=math.pi; a+=math.pi/380)

{

X1 = (float) (280*math.cos (1.6*a) +originx);

Y1 = (float) (479-(90*math.sin (8*a)) *math.cos (a/2.5) +originy));

x2 = (float) (280*math.cos (1.8*a) +originx);



Mygraphics.drawline (MYPEN,X1,Y1,X2,Y1);

}







}



}