public AABB GetAndTryUpdateFramingBoundingBox()
{
List <BoundBase> boundingBoxes = GetBoundingBoxes();
// Update framing bounding box only if transformation of component has changed
if (bBoundingBoxesTransformDirty)
{
var max = boundingBoxes[0].GetMax();
var min = boundingBoxes[0].GetMin();
float minX = min.X, minY = min.Y, minZ = min.Z, maxX = max.X, maxY = max.Y, maxZ = max.Z;
for (Int32 i = 1; i < boundingBoxes.Count; i++)
{
var localMax = boundingBoxes[i].GetMax();
var localMin = boundingBoxes[i].GetMin();
maxX = Math.Max(maxX, localMax.X);
maxY = Math.Max(maxY, localMax.Y);
maxZ = Math.Max(maxZ, localMax.Z);
minX = Math.Min(minX, localMin.X);
minY = Math.Min(minY, localMin.Y);
minZ = Math.Min(minZ, localMin.Z);
}
framingBoundBox = AABB.CreateFromMinMax(new Vector3(minX, minY, minZ), new Vector3(maxX, maxY, maxZ), RootComponent);
}
return(framingBoundBox);
}
private BoundBase UpdateBound()
{
BoundBase resultBound = null;
if (bComponentHierarchyChangedDirty || bTransformationDirty)
{
AABB aabb = AABB.CreateFromMinMax(FindEdgeInMesh((lhv, rhv) => { return(Math.Min(lhv, rhv)); }),
FindEdgeInMesh((lhv, rhv) => { return(Math.Max(lhv, rhv)); }), this);
Matrix4 TransformMatrix = GetWorldMatrix();
Quaternion rotation = TransformMatrix.ExtractRotation();
if (rotation.Xyz.LengthSquared > 0.01f)
{
resultBound = new OBB(aabb.GetLocalSpaceOrigin(), aabb.GetLocalSpaceExtent(), TransformMatrix, this);
}
else
{
aabb.ScalePlusTranslation = TransformMatrix;
resultBound = aabb;
}
bComponentHierarchyChangedDirty = false;
}
else
{
resultBound = Bound;
}
return(resultBound);
}
private BoundBase CreateBound()
{
BoundBase resultBound = null;
AABB aabb = AABB.CreateFromMinMax(FindMinFromModel(), FindMaxFromModel(), this);
Matrix4 TransformMatrix = GetWorldMatrix();
Quaternion rotation = TransformMatrix.ExtractRotation();
if (rotation.Xyz.LengthSquared > 0.01f)
{
resultBound = new OBB(aabb.GetLocalSpaceOrigin(), aabb.GetLocalSpaceExtent(), TransformMatrix, this);
}
else
{
aabb.ScalePlusTranslation = TransformMatrix;
resultBound = aabb;
}
return(resultBound);
}
private static BoundBase UpdateCollisionBound(ref SceneComponent component, float[,] vertices)
{
BoundBase resultBound = null;
AABB aabb = AABB.CreateFromMinMax(
FindEdgeInMesh((lhv, rhv) => { return(Math.Min(lhv, rhv)); }, vertices),
FindEdgeInMesh((lhv, rhv) => { return(Math.Max(lhv, rhv)); }, vertices),
component);
Matrix4 TransformMatrix = component.GetWorldMatrix();
Quaternion rotation = TransformMatrix.ExtractRotation();
if (rotation.Xyz.LengthSquared > 0.01f)
{
resultBound = new OBB(aabb.GetLocalSpaceOrigin(), aabb.GetLocalSpaceExtent(), TransformMatrix, component);
}
else
{
aabb.ScalePlusTranslation = TransformMatrix;
resultBound = aabb;
}
return(resultBound);
}
public AABB GetAABBFromAllChildComponents()
{
List <BoundBase> childBoundBoxes = new List <BoundBase>();
GetHierarchyBoundingBoxes(this, ref childBoundBoxes);
var max = childBoundBoxes[0].GetMax();
var min = childBoundBoxes[0].GetMin();
float minX = min.X, minY = min.Y, minZ = min.Z, maxX = max.X, maxY = max.Y, maxZ = max.Z;
for (Int32 i = 1; i < childBoundBoxes.Count; i++)
{
var localMax = childBoundBoxes[i].GetMax();
var localMin = childBoundBoxes[i].GetMin();
maxX = Math.Max(maxX, localMax.X);
maxY = Math.Max(maxY, localMax.Y);
maxZ = Math.Max(maxZ, localMax.Z);
minX = Math.Min(minX, localMin.X);
minY = Math.Min(minY, localMin.Y);
minZ = Math.Min(minZ, localMin.Z);
}
return(AABB.CreateFromMinMax(new Vector3(minX, minY, minZ), new Vector3(maxX, maxY, maxZ), this));
}