1. Edit the model
Modify shapes through point, line, and surface operations
2. Understanding the model
The shape of an object is made up of piece by piece facets, usually a quadrilateral
is usually empty inside
Point line surface: three basic elements: vertex: vertex; edge line edge; surface: face
Point
An edge is formed by connecting 2 vertices. A point is bounded by N edges.
3. Multiple Selection: Toggle the Select tool
Long press to pop up the secondary menu of selection: frame selection, brush selection (you can choose the brush radius), lasso, (adjust, select and move an element)
Press shift key to add selection/option key to deselect/a key to select all