Method DrawPhysicsDebug

Source/Engine/Terrain/TerrainPatch.cpp:2338–2389

}

void TerrainPatch::DrawPhysicsDebug(RenderView& view)
{
#if COMPILE_WITH_DEBUG_DRAW
    const BoundingBox bounds(_bounds.Minimum - view.Origin, _bounds.Maximum - view.Origin);
    if (!_physicsShape || !view.CullingFrustum.Intersects(bounds))
        return;
    PROFILE_MEM(LevelTerrain);
    if (view.Mode == ViewMode::PhysicsColliders)
    {
        const auto& triangles = GetCollisionTriangles();
        typedef DebugDraw::Vertex Vertex;
        if (!_collisionTrianglesBuffer)
            _collisionTrianglesBuffer = GPUDevice::Instance->CreateBuffer(TEXT("Terrain.CollisionTriangles"));
        const uint32 count = triangles.Count();
        if (_collisionTrianglesBuffer->GetElementsCount() != count)
        {
            if (_collisionTrianglesBuffer->Init(GPUBufferDescription::Vertex(Vertex::GetLayout(), sizeof(Vertex), count)))
                return;
            _collisionTrianglesBufferDirty = true;
        }
        if (_collisionTrianglesBufferDirty)
        {
            const Color32 color(Color::DarkOliveGreen);
            Array<Vertex> vertices;
            vertices.Resize((int32)count);
            const Vector3* src = triangles.Get();
            Vertex* dst = vertices.Get();
            for (uint32 i = 0; i < count; i++)
            {
                dst[i] = { (Float3)src[i], color };
            }
            _collisionTrianglesBuffer->SetData(vertices.Get(), _collisionTrianglesBuffer->GetSize());
            _collisionTrianglesBufferDirty = false;
        }
        DebugDraw::DrawTriangles(_collisionTrianglesBuffer, Matrix::Identity, 0, true);
    }
    else
    {
        BoundingSphere sphere;
        BoundingSphere::FromBox(bounds, sphere);
        if (Vector3::Distance(sphere.Center, view.Position) - sphere.Radius < METERS_TO_UNITS(500))
        {
            if (!_debugLines || _debugLinesDirty)
                CacheDebugLines();
            const float size = _terrain->_chunkSize * TERRAIN_UNITS_PER_VERTEX * Terrain::ChunksCountEdge;
            const Transform localTransform(Vector3(_x * size, _yOffset, _z * size), Quaternion::Identity, Vector3(_collisionScaleXZ, _yHeight, _collisionScaleXZ));
            const Matrix world = localTransform.GetWorld() * _terrain->_transform.GetWorld();
            DebugDraw::DrawLines(_debugLines, world);
        }
    }
#endif
}

#endif