public void FitTextureToPointCloud(Cloud cloud, int tileX, int tileY)
{
if (Texture.Texture == null) return;
if (tileX <= 0) tileX = 1;
if (tileY <= 0) tileY = 1;
// Scale will change, no need to use it in the calculations
var xvals = cloud.GetExtents().Select(x => x.Dot(Texture.UAxis)).ToList();
var yvals = cloud.GetExtents().Select(x => x.Dot(Texture.VAxis)).ToList();
var minU = xvals.Min();
var minV = yvals.Min();
var maxU = xvals.Max();
var maxV = yvals.Max();
Texture.XScale = (maxU - minU) / (Texture.Texture.Width * tileX);
Texture.YScale = (maxV - minV) / (Texture.Texture.Height * tileY);
Texture.XShift = -minU / Texture.XScale;
Texture.YShift = -minV / Texture.YScale;
CalculateTextureCoordinates(true);
}
public void AlignTextureWithPointCloud(Cloud cloud, BoxAlignMode mode)
{
if (Texture.Texture == null) return;
var xvals = cloud.GetExtents().Select(x => x.Dot(Texture.UAxis) / Texture.XScale).ToList();
var yvals = cloud.GetExtents().Select(x => x.Dot(Texture.VAxis) / Texture.YScale).ToList();
var minU = xvals.Min();
var minV = yvals.Min();
var maxU = xvals.Max();
var maxV = yvals.Max();
switch (mode)
{
case BoxAlignMode.Left:
Texture.XShift = -minU;
break;
case BoxAlignMode.Right:
Texture.XShift = -maxU + Texture.Texture.Width;
break;
case BoxAlignMode.Center:
var avgU = (minU + maxU) / 2;
var avgV = (minV + maxV) / 2;
Texture.XShift = -avgU + Texture.Texture.Width / 2m;
Texture.YShift = -avgV + Texture.Texture.Height / 2m;
break;
case BoxAlignMode.Top:
Texture.YShift = -minV;
break;
case BoxAlignMode.Bottom:
Texture.YShift = -maxV + Texture.Texture.Height;
break;
}
CalculateTextureCoordinates(true);
}