private void AddVertices(ref RTBoundingBox boundingBox, Vector3 vertex)
{
Vector3 worldVex = transform.localToWorldMatrix.MultiplyPoint(vertex);
boundingBox.min = Vector3.Min(boundingBox.min, worldVex);
boundingBox.max = Vector3.Max(boundingBox.max, worldVex);
}
public RTBoundingBoxToGPU(RTBoundingBox boundingBox)
{
this.leftID = boundingBox.leftID;
this.rightID = boundingBox.rightID;
this.max = boundingBox.max;
this.min = boundingBox.min;
}
private static RTBoundingBox CombineAllBox(List <RTBoundingBox> boxes)
{
RTBoundingBox root = RTBoundingBox.Empty;
foreach (var box in boxes)
{
root = Combine2Box(root, box);
}
return(root);
}
private static RTBoundingBox Combine2Box(RTBoundingBox a, RTBoundingBox b)
{
var max = Vector3.Max(a.max, b.max);
var min = Vector3.Min(a.min, b.min);
return(new RTBoundingBox(-1, -1,
max,
min,
Mathf.Min(a.primitiveBegin, b.primitiveBegin),
a.primitiveCount + b.primitiveCount));
}
public static RTBoundingBox RTBoundingBoxFromTriangle(int primitiveCounter, Vector3 v0, Vector3 v1, Vector3 v2)
{
RTBoundingBox box = Empty;
AddVerticesToBox(ref box, v0);
AddVerticesToBox(ref box, v1);
AddVerticesToBox(ref box, v2);
box.primitiveBegin = primitiveCounter;
box.primitiveCount = 1;
return(box);
}
private static RTBoundingBox Combine2Box(RTBoundingBox a, RTBoundingBox b)
{
var max = Vector3.Max(a.max, b.max);
var min = Vector3.Min(a.min, b.min);
a.geoIndices.UnionWith(b.geoIndices); // The union of triangle indices from both bounding boxes
// Use UnionWith instead of Linq Union to avoid creating a new IEnumerable
return(new RTBoundingBox(-1,
-1,
max,
min,
a.geoIndices));
}
public static RTBoundingBox RTBoundingBoxFromTriangle(int triangleIndex, Vector3 v0, Vector3 v1, Vector3 v2)
{
RTBoundingBox box = new RTBoundingBox(
leftID: -1,
rightID: -1,
max: new Vector3(float.MinValue, float.MinValue, float.MinValue),
min: new Vector3(float.MaxValue, float.MaxValue, float.MaxValue),
geoIndices: new HashSet <int>()
{
triangleIndex
}
);
AddVerticesToBox(ref box, v0);
AddVerticesToBox(ref box, v1);
AddVerticesToBox(ref box, v2);
return(box);
}
public void AddBoundingBox(RTBoundingBox box)
{
m_boxes.Add(box);
}
public void AddBoundingBox(RTBoundingBox box)
{
topLevelBVH.AddBoundingBox(box);
}
public static void AddVerticesToBox(ref RTBoundingBox boundingBox, Vector3 vertex)
{
boundingBox.min = Vector3.Min(boundingBox.min, vertex);
boundingBox.max = Vector3.Max(boundingBox.max, vertex);
}
