AGraph::AGraph()
{
PrimaryActorTick.bCanEverTick = false;
ConstructorHelpers::FObjectFinder<UStaticMesh> edgeMesh(TEXT("/Game/Models/EdgeVisualizer"));
ConstructorHelpers::FObjectFinder<UStaticMesh> vertexMesh(TEXT("/Game/Models/VertexVisualizer"));
edgeStaticMesh = edgeMesh.Object;
vertexStaticMesh = vertexMesh.Object;
}
//------------------------------------------------------------------------------
//!
bool
DFPolygonRenderable::pick( const Viewport& vp, const Vec2f& pos, float r, DFPolygonEditor::Pick& p )
{
uint32_t idx;
if( vertexMesh()->pick( vp, pos, r, idx ) )
{
p._idx = idx;
return true;
}
return false;
}
//------------------------------------------------------------------------------
//!
void
DFPolygonRenderable::update()
{
Vector<float> egver; // vec3: pos, vec3: color
Vector<float> vgver; // vec3: pos, vec3: color, flt: size
Vector<uint32_t> eindices;
Vector<uint32_t> vindices;
const DFPolygon* poly = _editor->polygon();
// Vertices.
for( auto v = poly->begin(); v != poly->end(); ++v )
{
vindices.pushBack( uint(vindices.size()) );
pushBack( vgver, (*v) );
pushBack( vgver, _col_v_default );
pushBack( vgver, _siz_v_default );
pushBack( egver, (*v) );
pushBack( egver, _col_e_default );
}
// Edges.
const uint n = uint(poly->numVertices());
for( uint i = 0, j = n-1; i < n; j=i++ )
{
eindices.pushBack( j );
eindices.pushBack( i );
}
// Tweak for selection.
auto& selection = _editor->selection();
for( auto cur = selection.begin(); cur != selection.end(); ++cur )
{
float* ptr = vgver.data() + cur->_idx*7;
Vec3f::as( ptr+3 ) = (*cur) == selection.last() ? _col_v_selected_p : _col_v_selected_s;
ptr[6] = _siz_v_selected;
}
// Updating the meshes.
MeshGeometry* emesh = edgeMesh();
MeshGeometry* vmesh = vertexMesh();
emesh->clearPatches();
emesh->deallocate();
if( !egver.empty() )
{
emesh->allocateIndices( uint(eindices.size()) );
emesh->copyIndices( eindices.data() );
emesh->allocateVertices( uint(egver.size())/6 );
emesh->copyAttributes( egver.data(), 6, 6, 0 );
emesh->addPatch( 0, uint(eindices.size()) );
}
emesh->updateProperties();
emesh->invalidateRenderableGeometry();
vmesh->clearPatches();
vmesh->deallocate();
if( !vgver.empty() )
{
vmesh->allocateIndices( uint(vindices.size()) );
vmesh->copyIndices( vindices.data() );
vmesh->allocateVertices( uint(vgver.size())/7 );
vmesh->copyAttributes( vgver.data(), 7, 7, 0 );
vmesh->addPatch( 0, uint(vindices.size()) );
}
vmesh->updateProperties();
vmesh->invalidateRenderableGeometry();
}
