private static ImageCorners GetImgCornersWithExtraPadding(ImageClickInputDetails clickInputs, Bitmap image, ImageAlterationParams imageAlterationParams)
{
//image corners with respect to the dimensions of click area
var clickImgCorners = ImageCorners.GetImageCornersFromClickInputs(clickInputs, imageAlterationParams.MinImageHeightRatio, imageAlterationParams.BottomPaddingPercent);
//image corners in actual image dimension
var actualImgCorners = ImageCorners.GetActualImageCorners(clickImgCorners, image, clickInputs.ClickPositionListForImages);
//image corners with extra padding on on each side of disc
return(GetModifiedImgCornersForExtraWidth(actualImgCorners, imageAlterationParams.PercentExtraWidth));
}
/// <summary>
/// The width of the object can be more than the diameter of the base disc
/// In such scenarios, we will need to keep some extra padding on each side of disc
/// while cropping the image. This function calculates the amount by which we should pad.
/// </summary>
/// <param name="contract"></param>
/// <returns></returns>
public static double GetExtraPadding(CreateMeshContract contract)
{
var maxExtraPaddingPercent = 0.0;
var bottomPaddingPercent = contract.BottomPaddingPercent;
//for each image
foreach (var clickInput in contract.ClickInputs.ImageClickInputDetailsList)
{
var imageName = clickInput.ImageName;
var bitmapImg = (Bitmap)Image.FromFile(string.Format(@"{0}\{1}", contract.ImageFolder, imageName));
//resize to 100 (small size)
const int newWidth = 100;
var newHeight = newWidth * bitmapImg.Height / bitmapImg.Width;
var imageAlterationParams = new ImageAlterationParams
{
ResizeType = ResizeType.ToSpecifiedSizes,
SpecificResizeHeight = newHeight,
SpecificResizeWidth = newWidth
};
var resizedImage = ImageResizer.ResizeImage(bitmapImg, imageAlterationParams);
//strip background
BackgroundStripper.StripBackground(resizedImage, contract.BackgroundStrippingParams);
//get actual borders for this image
var origImageCorners = ImageCorners.GetImageCornersFromClickInputs(clickInput, contract.MinImageHeightRatio, bottomPaddingPercent);
var actualImageCorners = ImageCorners.GetActualImageCorners(origImageCorners, resizedImage, clickInput.ClickPositionListForImages);
//calculate extra padding percent
var padding = ExtraPadding.GetExtraPaddingPercent(resizedImage, actualImageCorners,
contract.InvalidColor);
//check if it is more than the maximum so far
if (maxExtraPaddingPercent < padding)
{
maxExtraPaddingPercent = padding;
}
}
return(maxExtraPaddingPercent);
}
