public BestImageParams GetBestImageParams(int ctr)
{
//Get the scalar angles between this vertex normal and the direction vectors
var anglesAndImageIndices = _imageIndexAndDirections.Select(direction =>
new ImageIndexAndAngle {
Index = direction.Index, Angle = GetPositiveAngleOnXzPlane(_meshNormals[ctr], direction.Direction)
}).ToList();
var texCoodInAllowedRange = false;
var selection = new BestImageParams();
while (!texCoodInAllowedRange)
{
//get the min angle
var minAngle = (from angle in anglesAndImageIndices select angle.Angle).Min();
//get the indices which have this angle
var indicesOfImagesToUse = (from t in anglesAndImageIndices where t.Angle == minAngle select t.Index).ToArray();
var p = _meshPositions[ctr];
if (indicesOfImagesToUse.Count() == 1)
{
selection.IndexOfImageToUse = indicesOfImagesToUse[0];
var transformedPt = _transformers[selection.IndexOfImageToUse].GetTransformedPoint(p);
var zDistance = _imageIndexAndDirections.First(x => x.Index == selection.IndexOfImageToUse).Direction.Length - transformedPt.Z;
selection.TexCood = TexCoodCalculator.GetTexCood(_cameraRatio, transformedPt, zDistance);
}
else
{
//angle is the same for a list of images
//choose the image to which this point is the closest
var zDistances = indicesOfImagesToUse.ToDictionary(index => index, index => GetZDistanceForImageIndex(_imageIndexAndDirections, _transformers, p, index));
var minIndex = GetIndexWithMinDistance(zDistances);
selection.IndexOfImageToUse = minIndex;
var transformedPt = _transformers[minIndex].GetTransformedPoint(p);
var zDistance = zDistances[minIndex];
selection.TexCood = TexCoodCalculator.GetTexCood(_cameraRatio, transformedPt, zDistance);
}
texCoodInAllowedRange = true;
var selectedIndex = selection.IndexOfImageToUse;
if (anglesAndImageIndices.Count <= 1 || _imageParameters[selectedIndex].AllowedXLimits == null ||
_imageParameters[selectedIndex].AllowedXLimits.Min < 0 || _imageParameters[selectedIndex].AllowedXLimits.Max <= 0)
{
break;
}
//if not in allowed range
if (selection.TexCood.X < _imageParameters[selectedIndex].AllowedXLimits.Min || selection.TexCood.X > _imageParameters[selectedIndex].AllowedXLimits.Max)
{
//remove this image from the list and try again
texCoodInAllowedRange = false;
anglesAndImageIndices.Remove(anglesAndImageIndices.First(x => x.Index == selection.IndexOfImageToUse));
}
}
return(selection);
}
public BestImageParams GetBestImageParams(int ptIndex)
{
var meshPosition = _meshPositions[ptIndex];
//var sphericalPos = SphericalCoordinateSystem.GetSphericalFromCartesian(meshPosition);
//var angleInDegrees = 180*sphericalPos.Φ/Math.PI;
var selection = new BestImageParams();
//if((0 <= angleInDegrees && angleInDegrees <= 90 ) || (270 <= angleInDegrees && angleInDegrees <= 360))
//{
// selection.IndexOfImageToUse = 0;
//}
//else
//{
// selection.IndexOfImageToUse = 1;
//}
//selection.TransformedPt = _transformers[selection.IndexOfImageToUse].GetTransformedPoint(meshPosition);
//selection.ZDistance = _directions[selection.IndexOfImageToUse].Length - selection.TransformedPt.Z;
return(selection);
}
