Practical Exercises

In this page, you can download different exercises which will help you to practice 3DReshaper Meteor in various applications, using generic features.

Required Sample Files for Practicals

All exercises are available through the new help center (F1 from 3DReshaper Meteor). Click the button below to download all the required .RSH files.

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Practicals (PDF version)

Reverse engineering process allows to create a 3D model from a real object in order to duplicate or to modify it. It can also be used if the current drawings of the physical object are missing or incomplete. In this case, measurement of free-form surfaces can only be achieved through scanning and point cloud processing as explained in this exercise in which we will see how to convert a point cloud into a CAD model.

Rétro-Ingénierie

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The polygonal mesh modeling generates quality models, made up with up to hundreds or thousands of triangles. These 3D mesh models are ready for rapid prototyping, tool path generation, simulation, analysis… In order to use measured/scanned data (point clouds) in modern computer-aided design (CAD), manufacturing (CAM) or engineering (CAE) software, you may need to generate a CAD-model, such as IGES or STEP, which can be manipulated with those. This process is called reverse engineering. The software is a complete solution for the modeling of typical CAD objects, by providing you all the necessary functions for the construction and the processing of BSpline and Nurbs surfaces.

reverse engineering

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Depending on the quality of the original point cloud (noisy and aberrant points, missing parts, ...), it is often useful to mesh first with a big noise reduction parameter and then refine the rough mesh one or several times. In this exercise, we will see how to get a nice and accurate mesh using different meshing steps (rough mesh and refined meshes), to apply a picture and to decimate the number of triangles while keeping the realistic rendering.

Texturing

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In 3DReshaper several meshing commands are available. In this exercise, we will see how to mesh a noisy cloud using two mesh refinements (existing + interpolated or new points) + smoothing + sharp edge reconstruction.

Meshing

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In 3DReshaper, you can calculate volumes in different situations: closed surfaces, at a certain level of liquid, embankment and excavation for two superimposed surfaces. In this exercise, you will compute volumes and cubatures on a lake and on a tank.

Volumes

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Because of reverse-engineering needs, you need to generate from a digitization a CAD model (such as IGES or STEP), usable in Computer-Aided Design, Manufacturing or Engineering software. In this exercise, we will see how to how to convert a meshed model into a CAD model.

Reverse Engineering

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Comparing two shapes or two contours to know the gap or distance between them is required when you want to inspect a imported theoretical geometry with the corresponding measured model or when you want to compare two objects measured at different times (a DTM for instance). In this exercise, we will see how to how to align and place two objects in the same coordinate system in order to make a 3D comparison.

Meshing

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In 3DReshaper several meshing commands are available depending on the model and the application. In this exercise, we will see which meshing strategies can be applied (regular mesh + local improvement and mesh refinement using the points from the cloud).

Point Cloud Processing

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Sometimes, it is necessary in a point cloud to cut apart the points that are not relevant or must be separately processed in your application (e.g. monuments and trees on a DTM). In 3DReshaper, there are several ways of processing the point clouds (bad points removing or selecting, etc.). In this exercise, we will see how to split or explode a point cloud in different parts manually or according to a distance parameter. The 3D meshing while keeping all points will also be presented.

Building Extractor

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