} // end of Frustum CullTest()
/// <summary>
/// Test an axis aligned bounding box against the frustum.
/// </summary>
public CullResult CullTest(Vector3 min, Vector3 max)
{
CullResult result = CullResult.TotallyInside;
for (int i = 0; i < 6; i++)
{
// Calc the two vertices we need to test against.
Vector3 pVertex;
Vector3 nVertex;
if (planes[i].X < 0)
{
pVertex.X = min.X;
nVertex.X = max.X;
}
else
{
pVertex.X = max.X;
nVertex.X = min.X;
}
if (planes[i].Y < 0)
{
pVertex.Y = min.Y;
nVertex.Y = max.Y;
}
else
{
pVertex.Y = max.Y;
nVertex.Y = min.Y;
}
if (planes[i].Z < 0)
{
pVertex.Z = min.Z;
nVertex.Z = max.Z;
}
else
{
pVertex.Z = max.Z;
nVertex.Z = min.Z;
}
// Check for totally outside case.
float dist = pVertex.X * planes[i].X + pVertex.Y * planes[i].Y + pVertex.Z * planes[i].Z + planes[i].W;
if (dist < 0)
{
result = CullResult.TotallyOutside;
break;
}
// Check for box intersecting plane case.
dist = nVertex.X * planes[i].X + nVertex.Y * planes[i].Y + nVertex.Z * planes[i].Z + planes[i].W;
if (dist < 0 )
{
result = CullResult.PartiallyInside;
}
} // end of loop over frustum planes.
return result;
} // end of Frustum CullTest()
public void EndCull(CullRequest cullRequest, CullResult cullResults)
{
m_DecalsVisibleThisFrame = QueryCullResults(cullRequest, cullResults);
foreach (var pair in m_DecalSets)
{
pair.Value.EndCull(cullRequest[pair.Key]);
}
}
private int QueryCullResults(CullRequest decalCullRequest, CullResult cullResults)
{
var totalVisibleDecals = 0;
foreach (var pair in m_DecalSets)
{
totalVisibleDecals += pair.Value.QueryCullResults(decalCullRequest[pair.Key], cullResults[pair.Key]);
}
return(totalVisibleDecals);
}
public void LoadCullResults(CullResult cullResult)
{
foreach (var pair in cullResult)
{
if (!m_DecalSets.TryGetValue(pair.Key, out var decalSet))
{
continue;
}
decalSet.SetCullResult(pair.Value);
}
}
private static string GetCullText(CullResult result)
{
switch (result)
{
case CullResult.NotCulled:
return(string.Empty);
case CullResult.ClipRectIsZero:
return("[Culled - Fully Clipped]");
case CullResult.ActualSizeZero:
return("[Culled - Size is zero]");
case CullResult.OpacityZero:
return("[Culled - Opacity is zero]");
case CullResult.VisibilityHidden:
return("[Culled - Visibility Hidden]");
default:
throw new ArgumentOutOfRangeException(nameof(result), result, null);
}
}
} // end of Frustum CullTest()
/// <summary>
/// Test a sphere against the frustum.
/// </summary>
public CullResult CullTest(Vector3 center, float radius)
{
CullResult result = CullResult.TotallyInside;
float dist;
for (int i = 0; i < 6; ++i)
{
// Calc the distance to the plane.
dist = planes[i].X * center.X + planes[i].Y * center.Y + planes[i].Z * center.Z + planes[i].W;
if (dist < -radius) // If sphere is outside and we can exit.
{
result = CullResult.TotallyOutside;
break;
}
else if (dist < radius) // If sphere intersects plane, change result to
{ // partial but keep looking for full exclusion.
result = CullResult.PartiallyInside;
}
}
return result;
} // end of Frustum CullTest()
public CullResult CullTriangles(Vertex[] vertexs, List<int[]> trianglesIndex, CullPlane cullPlanes)
{
foreach (int[] indexs in trianglesIndex)
{
Vertex[] t = new Vertex[3];
int index1 = indexs[0];
t[0] = vertexs[index1];
int index2 = indexs[1];
t[1] = vertexs[index2];
int index3 = indexs[2];
t[2] = vertexs[index3];
cullTriangles.Add(t);
}
foreach (Plane p in cullPlanes.getCullPlanes())
{
Vertex[][] triAry = cullTriangles.ToArray();
int length = triAry.Length;
cullTriangles.Clear();
cullTrianglesCache.Clear();
for (int i = 0; i < triAry.Length; i++)
{
cullTriangle(triAry[i], p);
}
List<Vertex> newVertex1 = new List<Vertex>();
foreach (Vertex[] t in cullTriangles)
{
if (!newVertex1.Contains(t[0]))
newVertex1.Add(t[0]);
if (!newVertex1.Contains(t[1]))
newVertex1.Add(t[1]);
if (!newVertex1.Contains(t[2]))
newVertex1.Add(t[2]);
}
int vertexCount = newVertex1.Count;
}
List<Vertex> newVertex = new List<Vertex>();
foreach (Vertex[] t in cullTriangles)
{
if (!newVertex.Contains(t[0]))
newVertex.Add(t[0]);
if (!newVertex.Contains(t[1]))
newVertex.Add(t[1]);
if (!newVertex.Contains(t[2]))
newVertex.Add(t[2]);
}
vertexs = newVertex.ToArray();
trianglesIndex = new List<int[]>();
foreach(Vertex[] t in cullTriangles)
{
int[] indexs = new int[3];
indexs[0] = newVertex.IndexOf(t[0]);
indexs[1] = newVertex.IndexOf(t[1]);
indexs[2] = newVertex.IndexOf(t[2]);
trianglesIndex.Add(indexs);
}
CullResult result = new CullResult();
result.vertexs = vertexs;
result.trianglesIndex = trianglesIndex;
return result;
}
