//----------------------------------------------------------------//
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;
}
//----------------------------------------------------------------//
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 );
}
//----------------------------------------------------------------//
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;
}