//----------------------------------------------------------------//
bool MOAIVertexFormat::ComputeBounds ( void* buffer, u32 size, ZLBox& bounds ) {
u32 total = this->mVertexSize ? ( size / this->mVertexSize ) : 0;
if ( !total ) return false;
u32 coordAttributeIdx = this->mAttributeUseTable [ ARRAY_VERTEX ].mAttrID;
if ( coordAttributeIdx >= this->mTotalAttributes ) return false;
MOAIVertexAttribute& coordAttr = this->mAttributes [ coordAttributeIdx ];
if ( coordAttr.mType != ZGL_TYPE_FLOAT ) return false; // TODO: handle other types
if ( coordAttr.mSize < 2 ) return false;
buffer = ( void* )(( size_t )buffer + coordAttr.mOffset );
float* components = ( float* )buffer;
ZLVec3D coord ( components [ 0 ], components [ 1 ], ( coordAttr.mSize > 2 ? components [ 2 ] : 0.0f ));
bounds.Init ( coord );
bounds.Inflate ( 0.0000001f ); // prevent 'empty' bounds on cardinal direction lines or single vertex objects
for ( u32 i = 1; i < total; ++i ) {
buffer = ( void* )(( size_t )buffer + this->mVertexSize );
components = ( float* )buffer;
coord.Init ( components [ 0 ], components [ 1 ], ( coordAttr.mSize > 2 ? components [ 2 ] : 0.0f ));
bounds.Grow ( coord );
}
return true;
}
//----------------------------------------------------------------//
ZLBox MOAIMesh::GetItemBounds ( u32 idx ) {
UNUSED ( idx );
if ( this->mVertexBuffer ) {
return this->mVertexBuffer->GetBounds ();
}
ZLBox bounds;
bounds.Init ( 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f );
return bounds;
}
/** @name setBounds
@text Set the dimensions of a bounding box at a given index.
@in MOAIBoundsDeck self
@in number idx
@in number xMin
@in number yMin
@in number zMin
@in number xMax
@in number yMax
@in number zMax
@out nil
*/
int MOAIBoundsDeck::_setBounds ( lua_State* L ) {
MOAI_LUA_SETUP ( MOAIBoundsDeck, "UN" )
u32 idx = state.GetValue < u32 >( 2, 1 ) - 1;
if ( idx < self->mBoundsArray.Size ()) {
ZLBox bounds = state.GetBox ( 3 );
bounds.Bless ();
self->mBoundsArray [ idx ] = bounds;
self->SetBoundsDirty ();
}
return 0;
}
//----------------------------------------------------------------//
void ZLPrism::GetAABB ( ZLBox& box ) const {
ZLVec3D walker = mLoc;
box.Init ( walker );
walker.Add ( mYAxis );
box.Grow ( walker );
walker.Add ( mZAxis );
box.Grow ( walker );
walker.Sub ( mYAxis );
box.Grow ( walker );
walker.Add ( mXAxis );
box.Grow ( walker );
walker.Sub ( mZAxis );
box.Grow ( walker );
walker.Add ( mYAxis );
box.Grow ( walker );
walker.Add ( mZAxis );
box.Grow ( walker );
}
//----------------------------------------------------------------//
void MOAIPartitionLevel::GatherProps ( MOAIPartitionResultBuffer& results, MOAIProp* ignore, const ZLBox& box, u32 planeID, u32 mask ) {
float halfSize = this->mCellSize * 0.5f;
ZLRect rect = box.GetRect ( planeID );
MOAICellCoord coord0 = this->mGridSpace.GetCellCoord ( rect.mXMin - halfSize, rect.mYMin - halfSize );
MOAICellCoord coord1 = this->mGridSpace.GetCellCoord ( rect.mXMax + halfSize, rect.mYMax + halfSize );
int xTotal = coord1.mX - coord0.mX + 1;
int yTotal = coord1.mY - coord0.mY + 1;
int width = this->mGridSpace.GetWidth ();
int height = this->mGridSpace.GetHeight ();
if ( xTotal > width ) xTotal = width;
if ( yTotal > height ) yTotal = height;
for ( int y = 0; y < yTotal; ++y ) {
for ( int x = 0; x < xTotal; ++x ) {
MOAICellCoord offset = this->mGridSpace.WrapCellCoord ( coord0.mX + x, coord0.mY + y );
u32 addr = this->mGridSpace.GetCellAddr ( offset );
this->mCells [ addr ].GatherProps ( results, ignore, box, mask );
}
}
}
//----------------------------------------------------------------//
ZLBox MOAIBoundsDeck::ComputeMaxBounds () {
ZLBox bounds;
u32 size = this->mBoundsArray.Size ();
if ( size == 0 ) {
bounds.Init ( 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f );
}
else {
this->mMaxBounds = this->mBoundsArray [ 0 ];
for ( u32 i = 1; i < size; ++i ) {
bounds.Grow ( this->mBoundsArray [ i ]);
}
}
return bounds;
}
//----------------------------------------------------------------//
ZLBox MOAIGridDeck2D::ComputeMaxBounds () {
ZLBox bounds;
u32 size = this->mBrushes.Size ();
if ( size == 0 ) {
bounds.Init ( 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f );
}
else {
bounds = this->GetItemBounds ( 1 );
for ( u32 i = 1; i < this->mBrushes.Size (); ++i ) {
bounds.Grow ( this->GetItemBounds ( i ));
}
}
return bounds;
}
//----------------------------------------------------------------//
void ZLBox::GetFitting ( const ZLBox& target, ZLVec3D& offset, ZLVec3D& scale ) const {
float w = this->Width ();
float h = this->Height ();
float d = this->Depth ();
float tw = target.Width ();
float th = target.Height ();
float td = target.Depth ();
scale.mX = ( w != 0.0f ) && ( tw != 0.0f ) ? tw / w : 1.0f;
scale.mY = ( h != 0.0f ) && ( th != 0.0f ) ? th / h : 1.0f;
scale.mZ = ( d != 0.0f ) && ( td != 0.0f ) ? td / d : 1.0f;
offset.mX = target.mMin.mX - ( this->mMin.mX * scale.mX );
offset.mY = target.mMin.mY - ( this->mMin.mY * scale.mY );
offset.mZ = target.mMin.mZ - ( this->mMin.mZ * scale.mZ );
}
//----------------------------------------------------------------//
ZLBox MOAIGridDeck2D::GetItemBounds ( u32 idx ) {
ZLBox bounds;
u32 size = this->mBrushes.Size ();
if ( this->mGrid && size ) {
// TODO: handle oversized decks (don't assume unit sized deck items)
idx = ( idx - 1 ) % size;
MOAIGridDeckBrush& brush = this->mBrushes [ idx ];
ZLRect rect = this->mGrid->GetBounds ( brush.mMin, brush.mMax );
rect.Offset ( brush.mOffset.mX - rect.mXMin, brush.mOffset.mY - rect.mYMin );
bounds.Init ( rect.mXMin, rect.mYMax, rect.mXMax, rect.mYMin, 0.0f, 0.0f );
return bounds;
}
bounds.Init ( 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f );
return bounds;
}
//----------------------------------------------------------------//
bool MOAICollisionShape::Overlap ( const MOAITransformBase& t0, const ZLQuad& q0, const MOAITransformBase& t1, const ZLQuad& q1, ZLBox& bounds ) {
ZLQuad tq0 = q0;
tq0.Transform ( t0.GetLocalToWorldMtx ());
ZLQuad tq1 = q1;
tq1.Transform ( t1.GetLocalToWorldMtx ());
ZLRect rect;
bool result = tq0.Intersect ( tq1, rect );
bounds.Init ( rect, ZLBox::PLANE_XY, 0.0f, 0.0f );
return result;
}
//----------------------------------------------------------------//
bool ZLFrustum::Cull ( const ZLBox& box ) const {
if ( !box.Overlap ( mAABB )) return true;
if ( this->mUsePlanesForCull ) {
if ( ZLSect::BoxToPlane ( box, mPlanes [ NEAR_PLANE ]) > 0 ) return true;
if ( ZLSect::BoxToPlane ( box, mPlanes [ FAR_PLANE ]) > 0 ) return true;
if ( ZLSect::BoxToPlane ( box, mPlanes [ LEFT_PLANE ]) > 0 ) return true;
if ( ZLSect::BoxToPlane ( box, mPlanes [ RIGHT_PLANE ]) > 0 ) return true;
if ( ZLSect::BoxToPlane ( box, mPlanes [ TOP_PLANE ]) > 0 ) return true;
if ( ZLSect::BoxToPlane ( box, mPlanes [ BOTTOM_PLANE ]) > 0 ) return true;
}
return false;
}
//----------------------------------------------------------------//
ZLBox MOAIScriptDeck::ComputeMaxBounds () {
ZLRect rect = this->mRect;
if ( this->mOnTotalRect ) {
MOAILuaStateHandle state = MOAILuaRuntime::Get ().State ();
this->PushLocal ( state, this->mOnTotalRect );
state.DebugCall ( 0, 4 );
rect.mXMin = state.GetValue < float >( -4, 0.0f );
rect.mYMin = state.GetValue < float >( -3, 0.0f );
rect.mXMax = state.GetValue < float >( -2, 0.0f );
rect.mYMax = state.GetValue < float >( -1, 0.0f );
rect.Bless ();
}
ZLBox bounds;
bounds.Init ( rect.mXMin, rect.mYMax, rect.mXMax, rect.mYMin, 0.0f, 0.0f );
return bounds;
}
//----------------------------------------------------------------//
ZLBox MOAIScriptDeck::GetItemBounds ( u32 idx ) {
ZLRect rect = this->mRect;
if ( this->mOnRect ) {
MOAILuaStateHandle state = MOAILuaRuntime::Get ().State ();
this->PushLocal ( state, this->mOnRect );
lua_pushnumber ( state, idx );
state.DebugCall ( 1, 4 );
rect.mXMin = state.GetValue < float >( -4, 0.0f );
rect.mYMin = state.GetValue < float >( -3, 0.0f );
rect.mXMax = state.GetValue < float >( -2, 0.0f );
rect.mYMax = state.GetValue < float >( -1, 0.0f );
rect.Bless ();
}
ZLBox bounds;
bounds.Init ( rect.mXMin, rect.mYMax, rect.mXMax, rect.mYMin, 0.0f, 0.0f );
return bounds;
}
