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#include "drape/render_bucket.hpp"
#include "drape/overlay_handle.hpp"
#include "drape/attribute_buffer_mutator.hpp"
#include "drape/vertex_array_buffer.hpp"
#include "drape/overlay_tree.hpp"
#include "base/stl_add.hpp"
#include "std/bind.hpp"
namespace dp
{
RenderBucket::RenderBucket(TransferPointer<VertexArrayBuffer> buffer)
: m_buffer(buffer)
{
}
RenderBucket::~RenderBucket()
{
m_buffer.Destroy();
(void)GetRangeDeletor(m_overlay, MasterPointerDeleter())();
}
RefPointer<VertexArrayBuffer> RenderBucket::GetBuffer()
{
return m_buffer.GetRefPointer();
}
void RenderBucket::AddOverlayHandle(TransferPointer<OverlayHandle> handle)
{
m_overlay.push_back(MasterPointer<OverlayHandle>(handle));
}
void RenderBucket::Update(ScreenBase const & modelView)
{
for_each(m_overlay.begin(), m_overlay.end(), bind(&OverlayHandle::Update,
bind(&dp::NonConstGetter<OverlayHandle>, _1),
modelView));
}
void RenderBucket::CollectOverlayHandles(RefPointer<OverlayTree> tree)
{
for_each(m_overlay.begin(), m_overlay.end(), bind(&OverlayTree::Add, tree.GetRaw(),
bind(&MasterPointer<OverlayHandle>::GetRefPointer, _1)));
}
void RenderBucket::Render(ScreenBase const & screen)
{
if (!m_overlay.empty())
{
// in simple case when overlay is symbol each element will be contains 6 indexes
AttributeBufferMutator attributeMutator;
IndexBufferMutator indexMutator(6 * m_overlay.size());
RefPointer<IndexBufferMutator> rfpIndex = MakeStackRefPointer(&indexMutator);
RefPointer<AttributeBufferMutator> rfpAttrib = MakeStackRefPointer(&attributeMutator);
for_each(m_overlay.begin(), m_overlay.end(), [&] (MasterPointer<OverlayHandle> handle)
{
if (handle->IsValid() && handle->IsVisible())
{
handle->GetElementIndexes(rfpIndex);
if (handle->HasDynamicAttributes())
handle->GetAttributeMutation(rfpAttrib, screen);
}
});
m_buffer->ApplyMutation(rfpIndex, rfpAttrib);
}
m_buffer->Render();
}
} // namespace dp
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