Rotation

[satyavasu]

How to Rotate the Enhanced MetaFile Without using SetWorldTransform?

[Chris Losinger]

are you really going to ask this question every day? -c

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Be very, very careful what you put into that head, because you will never, ever get it out. --Thomas Cardinal Wolsey

Fractals

[satyavasu]

TRy to understand myprob I want the use in my app.Because I was posted several times Don't angry on me Sorry for the distrubence

[Blade DMS]

First off, You need to use GDI+... rect is a RectF containing the position of where to draw the metafile. RotationXY is the rotation around the center of that rectange (in hundeths of a degree I think).

PointF destinationPoints[3];
PointF Origin;

destinationPoints[0].X = (float)rect->GetLeft();
destinationPoints[0].Y = (float)rect->GetTop();

destinationPoints[1].X = (float)rect->GetRight();
destinationPoints[1].Y = (float)rect->GetTop();

destinationPoints[2].X = (float)rect->GetLeft();
destinationPoints[2].Y = (float)rect->GetBottom();

destinationPoints[3].X = (float)rect->GetRight();
destinationPoints[3].Y = (float)rect->GetBottom();

Origin.X = (rect->GetLeft()) + ((rect->Width)/2.0f);
Origin.Y = (rect->GetTop()) + ((rect->Height)/2.0f);

RotatePoints( destinationPoints, Origin, RotationXY, 3 );

graphics.DrawImage(&metafile, destinationPoints, 3); 

and here is the RotatePoints function...

RotatePoints(PointF *point, PointF origin, T_DWORD RotationXY, int count)
{
	double x, y, rad, crad, srad;
	#define	PI (3.1415926535)
			
	//x' = (x * cos A) - (y * sin A) 
	//y' = (x * sin A) + (y * cos A) 
			
	rad = RotationXY;	// in 0.01 degrees.
	rad = (rad * 2.0 * 3.1415926535)/36000.0; // change to radians.

	crad = cos( rad );
	srad = sin( rad );

	while( count > 0)
	{
		x = point->X - origin.X;
		y = point->Y - origin.Y;

		point->X = (float)(origin.X + ((x * crad) - (y * srad)));
		point->Y = (float)(origin.Y + ((x  * srad) + (y * crad)));

		count--;
		point++;
	}
}

Blade[DMS]

[satyavasu]

Thanks for the reply, I was unable use the GDI+.Pl give if another solution to this.

[Blade DMS]

I'm afraid that is the only solution I have found which does not involve stepping through the metafile and modifying each record manually. Blade[DMS]

[Anonymous]

Thank u for reply I am trying modify of each record manually.If u r found pl help Once again thanks for the reply