CAD Assistant
Free
1.2for iPhone, iPad and more
Age Rating
CAD Assistant Screenshots
About CAD Assistant
OPEN CASCADE CAD Assistant for iOS is an offline viewer and converter for 3D CAD and mesh models.
If you wish to use this technology for development of customized solutions for your business, contact us at:
https://www.opencascade.com/contact
Basic CAD model viewing and converting
Basic functionality is provided by CAD Data Exchange component of Open CASCADE Technology (OCCT).
The supported file formats and data are:
- BREP: native OCCT format for shape geometry, topology, and assembly structure.
- IGES (5.1 and 5.3): shape geometry, colors, top-level object names, file information.
- STEP (AP203 and AP214): shape geometry, assembly structure, colors, names, validation properties, file information.
Assembly structure of the model can be navigated through the tree browser. The components of the assembly can be hidden or shown as necessary to inspect the model. The selected sub-assembly or part can be queried for its properties.
CAD model (whole or selected part or sub-assembly) can be exported to any of supported CAD or mesh formats.
Viewing mesh data
Additional functionality is viewing of mesh models with associated data, implemented using the mesh visualization component of OCCT.
Supported mesh formats are:
- STL is de-facto standard in 3D printing.
- PLY has capability to store data associated with mesh nodes and elements. If you have in your application a model represented by mesh, it can be saved easily to PLY format and viewed on a tablet. Additional data (RGB color or scalar) can be added to each polygon or node.
- OBJ is standard for 3D animation and supported by most 3D graphics applications.
- JT is ISO standard for efficient visualization of 3D CAD data.
- glTF is an open standard for 3D assets.
CAD Assistant allows you to view the mesh in wireframe, shaded, and shrink view. If mesh contains associated textures, colors, or scalar data, it can be viewed with elements colored according to the selected property. For scalar quantities interactive color scale is shown, providing controls to manipulate the range of displayed quantities.
Common operations
CAD Assistant is optimized for devices with multi-touch screen and provides intuitive manipulation of the 3D view by finger gestures.
Left toolbar provides buttons for fitting model to window and choice of standard views. Settings submenu provides access to viewer and application options, file information, and message log.
Files can be opened from local storage of the application (uploaded using iTunes). In addition, models can be opened from other applications, like attachments within mail client.
CAD models can be saved in STEP, IGES, or BREP format as CAD data; CAD and mesh models can be saved in PLY, STL, OBJ or glTF format as polygonal data. Save file dialog also allows saving current image of the model to PNG format. If target directory Mail is selected, the mail client will be automatically started with saved file as attachment.
Known limitations
Depending on a device, opening large files may take time, or will be disallowed at all due to device memory limits. In general, files less than 50 Mb can be considered safe for opening on all devices.
See more at https://www.opencascade.com/content/3d-applications
Feedback
We welcome your feedback on our User Forum at https://www.opencascade.com/forums/applications
If you wish to use this technology for development of customized solutions for your business, contact us at:
https://www.opencascade.com/contact
Basic CAD model viewing and converting
Basic functionality is provided by CAD Data Exchange component of Open CASCADE Technology (OCCT).
The supported file formats and data are:
- BREP: native OCCT format for shape geometry, topology, and assembly structure.
- IGES (5.1 and 5.3): shape geometry, colors, top-level object names, file information.
- STEP (AP203 and AP214): shape geometry, assembly structure, colors, names, validation properties, file information.
Assembly structure of the model can be navigated through the tree browser. The components of the assembly can be hidden or shown as necessary to inspect the model. The selected sub-assembly or part can be queried for its properties.
CAD model (whole or selected part or sub-assembly) can be exported to any of supported CAD or mesh formats.
Viewing mesh data
Additional functionality is viewing of mesh models with associated data, implemented using the mesh visualization component of OCCT.
Supported mesh formats are:
- STL is de-facto standard in 3D printing.
- PLY has capability to store data associated with mesh nodes and elements. If you have in your application a model represented by mesh, it can be saved easily to PLY format and viewed on a tablet. Additional data (RGB color or scalar) can be added to each polygon or node.
- OBJ is standard for 3D animation and supported by most 3D graphics applications.
- JT is ISO standard for efficient visualization of 3D CAD data.
- glTF is an open standard for 3D assets.
CAD Assistant allows you to view the mesh in wireframe, shaded, and shrink view. If mesh contains associated textures, colors, or scalar data, it can be viewed with elements colored according to the selected property. For scalar quantities interactive color scale is shown, providing controls to manipulate the range of displayed quantities.
Common operations
CAD Assistant is optimized for devices with multi-touch screen and provides intuitive manipulation of the 3D view by finger gestures.
Left toolbar provides buttons for fitting model to window and choice of standard views. Settings submenu provides access to viewer and application options, file information, and message log.
Files can be opened from local storage of the application (uploaded using iTunes). In addition, models can be opened from other applications, like attachments within mail client.
CAD models can be saved in STEP, IGES, or BREP format as CAD data; CAD and mesh models can be saved in PLY, STL, OBJ or glTF format as polygonal data. Save file dialog also allows saving current image of the model to PNG format. If target directory Mail is selected, the mail client will be automatically started with saved file as attachment.
Known limitations
Depending on a device, opening large files may take time, or will be disallowed at all due to device memory limits. In general, files less than 50 Mb can be considered safe for opening on all devices.
See more at https://www.opencascade.com/content/3d-applications
Feedback
We welcome your feedback on our User Forum at https://www.opencascade.com/forums/applications
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What's New in the Latest Version 1.2
Last updated on Nov 9, 2018
Old Versions
- glTF writer now exports into 2.0 version of this format.
- Option to rename a selected assembly part.
- Improved performance of Flat Shaded and Mesh Shrinked presentation modes.
- Improved robustness of dimensions import from STEP file.
- Improved selection performance in several worst cases.
- Fixed issue with hanging clipping plane presentation on big models.
- Fixed applying length units while reading VRML 2.0 files.
- Option to rename a selected assembly part.
- Improved performance of Flat Shaded and Mesh Shrinked presentation modes.
- Improved robustness of dimensions import from STEP file.
- Improved selection performance in several worst cases.
- Fixed issue with hanging clipping plane presentation on big models.
- Fixed applying length units while reading VRML 2.0 files.
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Version History
1.2
Nov 9, 2018
- glTF writer now exports into 2.0 version of this format.
- Option to rename a selected assembly part.
- Improved performance of Flat Shaded and Mesh Shrinked presentation modes.
- Improved robustness of dimensions import from STEP file.
- Improved selection performance in several worst cases.
- Fixed issue with hanging clipping plane presentation on big models.
- Fixed applying length units while reading VRML 2.0 files.
- Option to rename a selected assembly part.
- Improved performance of Flat Shaded and Mesh Shrinked presentation modes.
- Improved robustness of dimensions import from STEP file.
- Improved selection performance in several worst cases.
- Fixed issue with hanging clipping plane presentation on big models.
- Fixed applying length units while reading VRML 2.0 files.
1.1
Aug 14, 2018
- New languages for user interface: French, Russian.
- New cad import formats (DXF, ACIS) using OCC Commercial Components.
- New mesh import formats (WRL1, BLEND, 3MF, 3DM, 3DS, AC3D, AMF, ASE, COLLADA, X3D).
- Dimensions and tolerances information stored in STEP file is now displayed in 3D Viewer.
- Extensions and bug-fixes for selected object properties.
- Improved stability while reading OBJ and JT files.
- Fixed reading files with GLB extension on iOS.
- Fixed issue when object color cannot be unset.
- New cad import formats (DXF, ACIS) using OCC Commercial Components.
- New mesh import formats (WRL1, BLEND, 3MF, 3DM, 3DS, AC3D, AMF, ASE, COLLADA, X3D).
- Dimensions and tolerances information stored in STEP file is now displayed in 3D Viewer.
- Extensions and bug-fixes for selected object properties.
- Improved stability while reading OBJ and JT files.
- Fixed reading files with GLB extension on iOS.
- Fixed issue when object color cannot be unset.
1.0
Mar 6, 2018
- Improved support of measurement units.
- Rubber-band selection tool.
- Option to export into Binary glTF 1.0 format.
- Option to exclude normals when exporting to PLY.
- Fixed reading some glTF 2.0 models - byteOffset is now optional.
- OBJ file import compatibility improvements.
- OBJ file export bug-fixes (random failures saving MTL file).
- Fixed handling of transformations and colors assigned to root elements and part instances in the document.
- Rubber-band selection tool.
- Option to export into Binary glTF 1.0 format.
- Option to exclude normals when exporting to PLY.
- Fixed reading some glTF 2.0 models - byteOffset is now optional.
- OBJ file import compatibility improvements.
- OBJ file export bug-fixes (random failures saving MTL file).
- Fixed handling of transformations and colors assigned to root elements and part instances in the document.
0.9
Apr 24, 2017
- Support of JT (without LODs), OFF, OBJ and glTF mesh formats.
- Improved performance while displaying big assemblies.
- Improved robustness and performance of reading STL files in text (ASCII) format; option to control nodes merging for STL mesh import.
- Support of polygons with more then 4 nodes within mesh import.
- Option to import multiple models into single document.
- Tool to delete assembly parts.
- Tool to change color of selected parts.
- Clipping planes in 3d view allowing to see the model cross-section and interior.
- Stereoscopic output (interlaced, anaglyph, side-by-side, etc.)
- Improved performance while displaying big assemblies.
- Improved robustness and performance of reading STL files in text (ASCII) format; option to control nodes merging for STL mesh import.
- Support of polygons with more then 4 nodes within mesh import.
- Option to import multiple models into single document.
- Tool to delete assembly parts.
- Tool to change color of selected parts.
- Clipping planes in 3d view allowing to see the model cross-section and interior.
- Stereoscopic output (interlaced, anaglyph, side-by-side, etc.)
0.5
Jun 14, 2015
CAD Assistant FAQ
Click here to learn how to download CAD Assistant in restricted country or region.
Check the following list to see the minimum requirements of CAD Assistant.
iPhone
Requires iOS 8.0 or later.
iPad
Requires iPadOS 8.0 or later.
iPod touch
Requires iOS 8.0 or later.
