Image-Based CAD Test Automation

CAD automation is the process of using software tools to automate repetitive or complex tasks within Computer-Aided Design environments. It allows engineering and design teams to streamline workflows such as model creation, drawing updates, visual checks, tool selection, data entry and regression validation.

T-Plan supports CAD automation by interacting with the software exactly as a user would at screen level. This enables teams to automate testing, validate visual outputs and standardise workflows across any device or platform without plug-ins, code changes or CAD-specific integrations.

Although CAD tools vary by industry, they generally fall into four broad categories:

1. 2D CAD – Used for technical drawings, schematics and floor plans (e.g. AutoCAD LT).

2. 3D CAD – Used for modelling complex components and assemblies in three dimensions (e.g. SolidWorks, Autodesk Inventor, CATIA).

3. 3D Modelling & Visualisation – Focused on rendering, animation and simulation (e.g. Blender, Rhino, 3ds Max).

4. CAE / CAM-Integrated CAD – Combines design with engineering analysis or manufacturing workflows (e.g. Siemens NX, Fusion 360).

T-Plan can automate any CAD application that renders visually on screen, regardless of category or underlying engine.

CAD automation tools help automate tasks such as modelling, drawing updates, data entry, regression validation and workflow testing. Examples include:

• Scripting-based automation (e.g. AutoLISP for AutoCAD, Python scripting for FreeCAD)

• Plug-in or macro-based automation within platforms like SolidWorks or Revit

• API-driven automation using CAD vendor SDKs

• Image-based automation tools like T-Plan, which automate CAD applications visually without requiring CAD-specific APIs, code access or plug-ins

Image-based tools such as T-Plan are particularly valuable because many CAD environments do not expose object-level data needed for traditional automation.