What's the difference between parametric and direct modeling?

• Use modeling commands and parameter specifications to capture modeling features.

• Create mathematical relationships (modeling features) between the sketches and the final body. These relationships are built on each other over time so they become connected.

• Use modeling commands.
• No modeling features nor complex geometric relationships are created.

• Modify the parameters, such as the angle, of modeling features; the changes will happen automatically and instantly to the model.
• You can adjust multiple parameters simultaneously with a few changes. Just make sure the changes don’t contradict other modeling features.
• These changes can influence other relationships that are created later. 

• Directly remove geometrical details—which were added in previous steps—from solid models, or add such details. There’s no need to update sketches or relationships.
  You can do this kind of quick design change even with imported CAD models that were created with parametric modeling.

It’s not so easy. 

If you have a complex model that was created from hundreds of modeling features, you need a deep understanding of how the model was built and how its geometric relationships were created, so you don’t break the model when you make changes.

It’s easy. 

If you import a CAD model into Shapr3D, you don’t need to know its complex feature relationships. In fact, the model should not contain parametric data—only the raw geometry remains—because those are removed in the export process.