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kronos · Guest

To rotate an image i use the following code, but it's too slow!

I don't know the OpenGL library but by chance do i have to look for there?

many thanks in advance!

/* ***************************************

void TForm1::TestRotate(Graphics::TBitmap *bmp_image)
{
int *ptr, *ptr_rotate;

// create bitmap temporary object
Graphics::TBitmap *bmp = new Graphics::TBitmap;
Graphics::TBitmap *bmp_rotate = new Graphics::TBitmap;

// load image
bmp->Assign(bmp_image);

// set bmp_rotate object dimensions by bmp object dimension
bmp_rotate->Width = bmp->Height;
bmp_rotate->Height = bmp->Width;

for(int y = 0; y < bmp->Height; y++)
{
for(int x = 0; x < bmp->Width; x++)
{
// anticlockwise image rotate
bmp_rotate->Canvas->Pixels[y][x] =
bmp->Canvas->Pixels[(bmp->Width - 1) - x][y];
}
}

// save image
bmp_image->Width = bmp_rotate->Width;
bmp_image->Height = bmp_rotate->Height;
bmp_image->Assign(bmp_rotate);

// destroy bitmap temporary object
delete bmp_rotate;
delete bmp;
}

**************************************** */

Remy Lebeau (TeamB) · Guest

"kronos" <jhdhjsd.sdhjhdssu (AT) sdhdjsh (DOT) dgh> wrote in message
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