private void Recompute()
{
if (!initialized)
{
return;
}
sphere.Center = GetVectorFromControls(sphereCenterXNumeric, sphereCenterYNumeric, sphereCenterZNumeric);
incomingRay.Origin = GetVectorFromControls(rayOriginXNumeric, rayOriginYNumeric, rayOriginZNumeric);
double directionPhi = (double)rayDirectionPhiNumeric.Value;
incomingRay.Direction = new Vector3d(Math.Sin(directionPhi), 0, Math.Cos(directionPhi));
intersection = sphere.Intersect(incomingRay);
refractedRay = null;
normal = Vector3d.Zero;
if (intersection != null)
{
normal = sphere.GetNormal(intersection.Position);
double n1, n2;
double dot = Vector3d.Dot(normal, incomingRay.Direction);
if (dot < 0)
{
n1 = Materials.Fixed.AIR;
n2 = Materials.Fixed.GLASS_CROWN_BK7;
}
else
{
n1 = Materials.Fixed.GLASS_CROWN_BK7;
n2 = Materials.Fixed.AIR;
normal = -normal;
}
refractedRay = new Ray(intersection.Position,
Ray.Refract(incomingRay.Direction, normal, n1, n2, false));
}
drawingPanel.Invalidate();
}
private void ComputeIntersection(bool withDebugInfo)
{
rayStartPoint = new Point((int)rayStart.X, (int)rayStart.Y);
rayEndPoint = new Point((int)rayEnd.X, (int)rayEnd.Y);
if (withDebugInfo)
{
footprintDebugInfo = new FootprintDebugInfo();
}
else
{
footprintDebugInfo = null;
}
intersection = selectedIntersector.Intersect(rayStart, rayEnd, ref footprintDebugInfo);
intersectionLabel.Text = (intersection != null) ? intersection.Position.ToString() : "none";
isecLayerLabel.Text = (footprintDebugInfo != null) && (intersection != null) ? footprintDebugInfo.LayerOfIntersection.ToString() : "";
heightFieldPanel.Invalidate();
footprintTraversalPanel.Invalidate();
}
