private void CalculateSortedFrontFaces(
IEnumerable <Opaque> opaqueObjs, LightViewTriangle lightTriangle)
{
Profiler.BeginSample("Calculate shadow front faces");
sortedFrontFaces.Clear();
foreach (Opaque opaque in opaqueObjs)
{
if (lightTriangle.CalculateFrontFace(opaque) is LineSegment frontFace)
{
sortedFrontFaces.Add(System.Tuple.Create(frontFace, opaque));
}
}
sortedFrontFaces.Add(System.Tuple.Create(lightTriangle.FarEdge(), (Opaque)null));
Profiler.EndSample();
//foreach (var pair in sortedFrontFaces) {
// Debug.Log(pair.Item1 + ", " + pair.Item2);
// Debug.Log(
// lightTriangle.Angle(pair.Item1.p1) + ", " +
// lightTriangle.Angle(pair.Item1.p2));
//}
//MinimalUnion<Opaque>.CalculateAndSort(ref sortedFrontFaces, lightTriangle.GetOrigin(), lightTriangle.Angle);
//MinimalUnionImproved<Opaque>.SortedMinimalUnion(ref sortedFrontFaces, lightTriangle.GetOrigin(), lightTriangle.Angle);
MinimalUnionImprovedAgain <Opaque> .SortedMinimalUnion(ref sortedFrontFaces, lightTriangle.GetOrigin(), lightTriangle.Angle);
//foreach (var pair in sortedFrontFaces) {
// Debug.Log(pair.Item1 + ", " + pair.Item2);
// Debug.Log(
// lightTriangle.Angle(pair.Item1.p1) + ", " +
// lightTriangle.Angle(pair.Item1.p2));
//}
}
private void CalculateShadowFaces(LightViewTriangle lightTriangle)
{
frontFacing.Clear();
leftFacing.Clear();
rightFacing.Clear();
for (int i = 0; i < sortedFrontFaces.Count; i++)
{
LineSegment?prevSeg = i == 0 ? (LineSegment?)null : sortedFrontFaces[i - 1].Item1;
LineSegment?nextSeg = i == sortedFrontFaces.Count - 1 ? (LineSegment?)null : sortedFrontFaces[i + 1].Item1;
LineSegment seg = sortedFrontFaces[i].Item1;
Opaque opaque = sortedFrontFaces[i].Item2;
if (opaque != null)
{
if (seg.Length() > .0001)
{
if (!frontFacing.ContainsKey(opaque))
{
frontFacing.Add(opaque, new List <LineSegment>());
}
frontFacing[opaque].Add(seg);
}
if (prevSeg is LineSegment prev)
{
LineSegment right = new LineSegment(prev.p2, seg.p1);
if (right.Length() > .0001 && !right.GoesAwayFrom(lightTriangle.GetOrigin()))
{
rightFacing[opaque] = right;
}
}
if (nextSeg is LineSegment next)
{
LineSegment left = new LineSegment(seg.p2, next.p1);
if (left.Length() > .0001 && left.GoesAwayFrom(lightTriangle.GetOrigin()))
{
leftFacing[opaque] = left;
}
}
}
}
var rightExtent = sortedFrontFaces[0].Item1.p1;
var leftExtent = sortedFrontFaces[sortedFrontFaces.Count - 1].Item1.p2;
rightmostFace = new LineSegment(lightTriangle.GetOrigin(), rightExtent);
leftmostFace = new LineSegment(lightTriangle.GetOrigin(), leftExtent);
}
public void CalculateShadows(IEnumerable <Opaque> opaqueObjs, LightViewTriangle lightTriangle)
{
CalculateSortedFrontFaces(opaqueObjs, lightTriangle);
CalculateShadowFaces(lightTriangle);
}
