// sluzi na vykreslenie alebo prekreslenie mriezky pocat behu programu, pri zmene velkosti okna alebo rozmerov mriezky pod hodnot v textbox-och
private void SetGridImage(double ratioR) //nastavuje aj suradnice horneho laveho a dolneho praveho rohu gridu vzhladom k parent picturebox-u
{
this.Image = PictureEditor.DrawGridIntoImage(ratioR, pieceDimensions,
gridDimensions.Width,
gridDimensions.Height,
backGroundImageForGrid,
this.Size);
//Urcime, kde konkretne sa nachadzaju rohy gridu(top left, bottom right) v parent picturebox-e vzdy,
//ked dojde k zmene velkosti alebo pozicii gridu.
pointTopLeftCorner_Grid = TopLeftCornerPoint_GridLayer_TransformedToParentPicturebox;
pointBottomRightCorner_Grid = BottomRightCornerPoint_GridLayer_TransformedToParentPicturebox;
currImageSize = new Size((int)(ratioR * data.SourcePicture.Width), (int)(ratioR * data.SourcePicture.Height));
}
