B-Rep and polygonal geometry simplification to get lighter 3D models and protect IP

From mesh decimation to B-Rep feature removal, and NURBS surface recognition. Reduce geometry complexity to work with lighter 3D models faster.

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Visualization

Reducing polygon count

Removing invisible elements

IP (Intellectual Property) protection

Shrink wrapping

Defeaturing

Removing small and invisible elements

CAE simulation

Defeaturing

Analytical vs NURBS geometry

Key Features

B-Rep simplification

Invisible elements removal
Small body removal
Shrink wrapping
Defeaturing: holes, fillets, chamfers and others

NURBS geometry simplification

NURBS degree reduction
NURBS-to-elementary curves and surfaces recognition

Mesh decimation

Up to 99% mesh size reduction
Preserves attributes (normals, colors, UV coordinates)
User-controlled process: Target polygon count vs deflection

Develop Faster

Easy to integrate with CAD Exchanger SDK.

View documentation

ModelData_Model aModel;

... // import from the file

// Set up mesh simplifier
ModelSimplifier_MeshSimplifierParameters aParams;
aParams.SetDegreeOfSimplification (ModelSimplifier_MeshSimplifierParameters::High);

// Running the simplifier
ModelSimplifier_MeshSimplifier aSimplifier;
aSimplifier.SetParameters (aParams);
ModelData_Model aNewModel = aSimplifier.Perform (aModel);

var aModel = new ModelData_Model();

... // import from external file

// Set up mesh simplifier
var aParams = new ModelSimplifier_MeshSimplifierParameters();
aParams.SetDegreeOfSimplification (ModelSimplifier_MeshSimplifierParameters.High);

// Running the simplifier
var aSimplifier = new ModelSimplifier_MeshSimplifier();
aSimplifier.SetParameters (aParams);
var aNewModel = aSimplifier.Perform (aModel);

ModelData_Model aModel = new ModelData_Model();

... // import from external file

// Set up mesh simplifier
ModelSimplifier_MeshSimplifierParameters aParams = new ModelSimplifier_MeshSimplifierParameters();
aParams.SetDegreeOfSimplification (ModelSimplifier_MeshSimplifierParameters.High);

// Running the simplifier
ModelSimplifier_MeshSimplifier aSimplifier = new ModelSimplifier_MeshSimplifier();
aSimplifier.SetParameters (aParams);
ModelData_Model aNewModel = aSimplifier.Perform (aModel);

Flexible Licensing for Enterprise and Start-ups

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Frequently Asked Questions

What are requirements for the mesh decimation to work?

For the mesh simplifier to work, the mesh must be connected, i.e. the nodes/edges must be shared by the triangles. This is guaranteed if the mesh is generated from the B-Rep geometry using CAD Exchanger meshers, or if the original polygonal model imported from the file (e.g. from JT) meets this requirement.

Otherwise (e.g. in the case of STL file) the decimation algorithm may have no effect.

What are typical use cases for the model simplifier?

The component can be especially useful in any workflow when the original 3D model contains an excessive level of details (either as precise geometries or polygons). By getting rid of unnecessary details you can significantly reduce memory footprint and boost performance without losing meaningful information. 3D model simplification can sometimes even enable the workflow which was unachievable with the original model.

Typical use cases:

Visualization and rendering (including AR/VR or photorealistic rendering), when tiny details or invisible parts are not required.
CAE simulations and physical analysis when small features (e.g. fillets) can rather distort the results than improve them.
Manufacturing when CAM algorithms need to work with lines and arcs, cylinders and cones instead of free-form NURBS.
Reverse engineering when a 3D scanned model contains too much triangles and requires simplification.

From Our Blog

How to simplify a B-Rep model with CAD Exchanger SDK?

B-Rep simplification tools allow to remove blind and through holes, internal and hence invisible faces and bodies, as well as small bodies that are not so important for the visual appearance of the model.

How to simplify a 3D mesh model with CAD Exchanger SDK?

How to simplify mesh with CAD Exchanger SDK?

We invite you to study the opportunities of mesh decimation: from rendering acceleration to IP protection, from visual quality preservation to coarse LODs.

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