how to draw filed lines in Visual C++ ?

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Hi,
i want to draw field lines( like in magnetism) around many objects ( 2D draw like lines, rects, ellipses, polygones..) in VC++.
could please help me?

Thanks

Posted 8-Sep-11 13:33pm

ima240109

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Sergey Alexandrovich Kryukov 8-Sep-11 21:26pm

What kind of help do you need? What's your problem? GDI+?
--SA

ima240109 9-Sep-11 5:53am

Hi,
thank you for your answers,
in a MDI C++ application, i draw many objects ( lines, rect, ...), for my need some of them are designed to be obstacles and others to be goals, so there is repulsive and attractive areas. my problem is that i want to draw field lines to express this, like what is showen in the following page:

http://en.wikipedia.org/wiki/Field_line

could please help me, i don't know how to do this in VC++.

Best regards

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Arun Parthasarathy · Answer 1 · 2011-09-08T21:09:00

Solution 1

VB

Do the following code inside the OnPaint function:

C++

CPaintDC d(this);
// Line
d.MoveTo(20,40);
d.LineTo(80,40);
// Rect
d.Rectangle(10,20,200,10);
// Round rect
d.RoundRect(10,120,200,220,20,20);
//ellipse
d.Ellipse(10,240,200,340);

//pie
d.Pie(250,10,350,110,350,110,350,10);
//polygon
POINT pt[5] = { 250,150,250,300,300,350,400,300,320,190};

d.Polygon(pt,5);

Posted 8-Sep-11 21:09pm

Arun Parthasarathy

Comments

ima240109 9-Sep-11 5:53am

Hi,
thank you for your answers,
in a MDI C++ application, i draw many objects ( lines, rect, ...), for my need some of them are designed to be obstacles and others to be goals, so there is repulsive and attractive areas. my problem is that i want to draw field lines to express this, like what is showen in the following page:

http://en.wikipedia.org/wiki/Field_line

could please help me, i don't know how to do this in VC++.

Best regards