Autodesk Forge:模型比较(BIM 360功能)

问题描述

Bim 360有一个很棒的工具，称为比较版本"，可以查看两个Revit模型之间的更改.可以在以下功能中找到更多信息:

Bim 360 has a great tool called "compare versions" which allows the viewing of changes between two Revit models. More info can be found on the feature here:

比较版本信息

在Autodesk Forge中可以找到此功能吗?我找不到它，我确实看到伪造有一个BIM 360 API，但是我看不到此功能.

Is this feature found within Autodesk Forge? I haven't been able to locate it, I do see that forge has a BIM 360 API, but I don't see this feature available.

推荐答案

您可以使用 ForgeAuthor sdk执行此操作.

You can do this use the ForgeAuthor sdk do this.

ForgeAuthor可以读取Autodesk Forge SVF模型，比较差异并生成差异模型.

The ForgeAuthor can read the Autodesk Forge SVF model, compare the differences, and generate the difference model.

#region setup materials

                var matUnmodified = new Material
                {
                    Color = Vector3D.FromColor(0xffffff), //Darker: Vector3D.FromColor(0x101010)
                    Transparent = 0.95,
                    Reflectivity = 0
                };

                var matAdd = new Material
                {
                    Color = Vector3D.FromColor(Color.GreenYellow)
                };

                var matDelete = new Material
                {
                    Color = Vector3D.FromColor(Color.Red)
                };

                var matModifiedBefore = new Material
                {
                    Color = Vector3D.FromColor(Color.Orange),
                    Transparent = 0.5
                };

                var matModifiedAfter = new Material
                {
                    Color = Vector3D.FromColor(Color.Aqua),
                };

                #endregion

                var baseModelPath = txtBaseModel.Text;
                var incrModelPath = txtIncrementModel.Text;
                var diffModelPath = txtDiffModel.Text;

                var svfbase = baseModelPath.EndsWith(@"zip")
                    ? SvfDocument.LoadFromZipFile(baseModelPath)
                    : SvfDocument.LoadFromSvfFile(baseModelPath);

                var svfincr = incrModelPath.EndsWith(@"zip")
                    ? SvfDocument.LoadFromZipFile(incrModelPath)
                    : SvfDocument.LoadFromSvfFile(incrModelPath);

                var compareResult = CompareModel(svfbase, svfincr);

                var svfdiff = new SvfDocument();
                svfdiff.Model.Name = @"Diff Model";
                svfdiff.Metadata = svfbase.Metadata;

                var nodeUnmodified = svfdiff.Model.Children.CreateNode();
                nodeUnmodified.Name = @"Unmodified";

                var nodeAdded = svfdiff.Model.Children.CreateNode();
                nodeAdded.Name = @"Added";

                var nodeDeleted = svfdiff.Model.Children.CreateNode();
                nodeDeleted.Name = @"Deleted";

                var nodeModifiedBefore = svfdiff.Model.Children.CreateNode();
                nodeModifiedBefore.Name = @"Modified Before";

                var nodeModifiedAfter = svfdiff.Model.Children.CreateNode();
                nodeModifiedAfter.Name = @"Modified After";

                svfbase.EnumerateNodes(node =>
                {
                    if (node.Children?.Count == 0 &&
                        node.Fragments?.Count > 0 &&
                        string.IsNullOrEmpty(node.ExternalId) == false)
                    {
                        if (compareResult.Unmodified.Remove(node.ExternalId))
                        {
                            ImportNodeWithPath(nodeUnmodified, node, svfbase.Model, matUnmodified);
                        }
                        else if (compareResult.Deleted.Remove(node.ExternalId))
                        {
                            ImportNodeWithPath(nodeDeleted, node, svfbase.Model, matDelete);
                        }
                        else if (compareResult.Modified.Contains(node.ExternalId))
                        {
                            var targetNode =
                                ImportNodeWithPath(nodeModifiedBefore, node, svfbase.Model, matModifiedBefore);
                            targetNode.ExternalId += @"_Before";
                        }
                    }
                }, svfbase.Model);

                svfincr.EnumerateNodes(node =>
                {
                    if (node.Children?.Count == 0 &&
                        node.Fragments?.Count > 0 &&
                        string.IsNullOrEmpty(node.ExternalId) == false)
                    {
                        if (compareResult.Added.Remove(node.ExternalId))
                        {
                            ImportNodeWithPath(nodeAdded, node, svfincr.Model, matAdd);
                        }
                        else if (compareResult.Modified.Remove(node.ExternalId))
                        {
                            ImportNodeWithPath(nodeModifiedAfter, node, svfincr.Model, matModifiedAfter);
                        }
                    }
                }, svfincr.Model);

                svfdiff.SaveToFolder(diffModelPath, true);
                svfdiff.Dispose();

                svfbase.Dispose();
                svfincr.Dispose();



private (HashSet<string> Unmodified, HashSet<string> Added, HashSet<string> Deleted, HashSet<string> Modified)
        CompareModel(SvfDocument svfbase, SvfDocument svfincr)
    {
        var baseNodes = new Dictionary<string, SvfNode>();
        svfbase.EnumerateNodes(node =>
        {
            if (node.Children?.Count == 0
                && node.Fragments?.Count > 0
                && string.IsNullOrEmpty(node.ExternalId) == false)
            {
                baseNodes[node.ExternalId] = node;
            }
        }, svfbase.Model);

        var elementsAdded = new HashSet<string>();
        var elementsUnmodified = new HashSet<string>();
        var elementsModified = new HashSet<string>();
        var elementsDeleted = new HashSet<string>();

        svfincr.EnumerateNodes(node =>
        {
            if (node.Children?.Count == 0
                && node.Fragments?.Count > 0
                && string.IsNullOrEmpty(node.ExternalId) == false)
            {
                if (baseNodes.TryGetValue(node.ExternalId, out SvfNode baseNode))
                {
                    if (baseNode.Fragments.Equals(node.Fragments))
                    {
                        elementsUnmodified.Add(node.ExternalId); //unmdified
                    }
                    else
                    {
                        elementsModified.Add(node.ExternalId); //modified
                    }

                    baseNodes.Remove(node.ExternalId);
                }
                else
                {
                    elementsAdded.Add(node.ExternalId); //added
                }
            }
        }, svfincr.Model);

        foreach (var p in baseNodes.Keys)
        {
            elementsDeleted.Add(p); //deleted
        }
        baseNodes.Clear();

        return (elementsUnmodified, elementsAdded, elementsDeleted, elementsModified);
    }

    private SvfNode ImportNodeWithPath(SvfNode targetNodeRoot, SvfNode sourceNode, SvfNode sourceNodeRoot, Material material)
    {
        var targetNode = sourceNode.Parent == sourceNodeRoot
            ? targetNodeRoot
            : ImportNodeWithPath(targetNodeRoot, sourceNode.Parent, sourceNodeRoot, material);
        var resultNode = targetNode.Children.FirstOrDefault(x => x.Name == sourceNode.Name);
        if (resultNode == null)
        {
            resultNode = targetNode.Children.ImportNode(sourceNode, null, false);
            foreach (var fragment in resultNode.Fragments)
            {
                fragment.Material = material;
            }
        }
        return resultNode;
    }

快照

这篇关于Autodesk Forge:模型比较(BIM 360功能)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！