diff options
| author | Kester Maddock <Christopher.Maddock.1@uni.massey.ac.nz> | 2004-05-21 13:21:15 +0400 |
|---|---|---|
| committer | Kester Maddock <Christopher.Maddock.1@uni.massey.ac.nz> | 2004-05-21 13:21:15 +0400 |
| commit | e957b12f0eb5ae56f6db1c64d123eacc0840cc61 (patch) | |
| tree | b8ed8f092619edb303cf34aba11b0999ad317d40 /source/gameengine/SceneGraph/SG_Spatial.cpp | |
| parent | 1217928e662bd74980dc17c8d32797b0bc6f7002 (diff) | |
Frustum sphere culling.
Do a sphere<->camera sphere and a sphere<->frustum before the box<->frustum test.
Diffstat (limited to 'source/gameengine/SceneGraph/SG_Spatial.cpp')
| -rw-r--r-- | source/gameengine/SceneGraph/SG_Spatial.cpp | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/source/gameengine/SceneGraph/SG_Spatial.cpp b/source/gameengine/SceneGraph/SG_Spatial.cpp index 633e89b3e6a..c65542c98ce 100644 --- a/source/gameengine/SceneGraph/SG_Spatial.cpp +++ b/source/gameengine/SceneGraph/SG_Spatial.cpp @@ -50,7 +50,7 @@ SG_Spatial( m_localPosition(MT_Point3(0,0,0)), m_localRotation(1,0,0,0,1,0,0,0,1), m_localScaling(MT_Vector3(1.f,1.f,1.f)), - + m_worldPosition(MT_Point3(0,0,0)), m_worldRotation(0,0,0,0,0,0,0,0,0), m_worldScaling(MT_Vector3(1.f,1.f,1.f)), @@ -74,7 +74,8 @@ SG_Spatial( m_parent_relation(NULL), - m_bbox(other.m_bbox) + m_bbox(other.m_bbox), + m_radius(other.m_radius) { // duplicate the parent relation for this object m_parent_relation = other.m_parent_relation->NewCopy(); @@ -118,7 +119,8 @@ UpdateSpatialData( for (;cit!=c_end;++cit) { - bComputesWorldTransform = bComputesWorldTransform || (*cit)->Update(time); + if ((*cit)->Update(time)) + bComputesWorldTransform = true; } // If none of the objects updated our values then we ask the @@ -126,9 +128,9 @@ UpdateSpatialData( // our world coordinates. if (!bComputesWorldTransform) - { + { ComputeWorldTransforms(parent); - } + } } void SG_Spatial::ComputeWorldTransforms(const SG_Spatial *parent) @@ -299,18 +301,26 @@ void SG_Spatial::SetBBox(SG_BBox& bbox) m_bbox = bbox; } +MT_Transform SG_Spatial::GetWorldTransform() const +{ + return MT_Transform(m_worldPosition, m_worldRotation.scaled(m_worldScaling[0], m_worldScaling[1], m_worldScaling[2])); +} + bool SG_Spatial::inside(const MT_Point3 &point) const { - return m_bbox.transform(MT_Transform(m_worldPosition, m_worldRotation.scaled(m_worldScaling[0], m_worldScaling[1], m_worldScaling[2]))).inside(point); + MT_Scalar radius = m_worldScaling[m_worldScaling.closestAxis()]*m_radius; + return (m_worldPosition.distance2(point) <= radius*radius) ? + m_bbox.transform(GetWorldTransform()).inside(point) : + false; } void SG_Spatial::getBBox(MT_Point3 *box) const { - m_bbox.get(box, MT_Transform(m_worldPosition, m_worldRotation.scaled(m_worldScaling[0], m_worldScaling[1], m_worldScaling[2]))); + m_bbox.get(box, GetWorldTransform()); } void SG_Spatial::getAABBox(MT_Point3 *box) const { - m_bbox.getaa(box, MT_Transform(m_worldPosition, m_worldRotation.scaled(m_worldScaling[0], m_worldScaling[1], m_worldScaling[2]))); + m_bbox.getaa(box, GetWorldTransform()); } |