Method DebugDraw

Source/Engine/Navigation/NavMeshRuntime.cpp:592–634

}

void NavMeshRuntime::DebugDraw()
{
    ScopeLock lock(Locker);
    const dtNavMesh* dtNavMesh = GetNavMesh();
    const int tilesCount = dtNavMesh ? dtNavMesh->getMaxTiles() : 0;
    if (tilesCount == 0)
        return;
    Matrix worldToNavMesh, navMeshToWorld;
    Matrix::RotationQuaternion(Properties.Rotation, worldToNavMesh);
    Matrix::Invert(worldToNavMesh, navMeshToWorld);

    for (int tileIndex = 0; tileIndex < tilesCount; tileIndex++)
    {
        const dtMeshTile* tile = dtNavMesh->getTile(tileIndex);
        if (!tile->header)
            continue;

#if 0
        // Debug draw tile bounds and owner scene name
        BoundingBox tileBounds = *(BoundingBox*)&tile->header->bmin[0];
        DebugDraw::DrawWireBox(tileBounds, Color::CadetBlue);
        // TODO: build map from tile coords to tile data to avoid this loop
        for (const auto& e : _tiles)
        {
            if (e.X == tile->header->x && e.Y == tile->header->y && e.Layer == tile->header->layer)
            {
                if (e.NavMesh && e.NavMesh->GetScene())
                    DebugDraw::DrawText(e.NavMesh->GetScene()->GetName(), tileBounds.Minimum + tileBounds.GetSize() * Float3(0.5f, 0.8f, 0.5f), Color::CadetBlue);
                break;
            }
        }
#endif

        for (int i = 0; i < tile->header->polyCount; i++)
        {
            const dtPoly* poly = &tile->polys[i];
            if (poly->getType() != DT_POLYTYPE_GROUND)
                continue;

            DrawPoly(this, navMeshToWorld, *tile, *poly);
        }
    }
}

#endif