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VScad3 Workspace Menu
2.3.2 Grid/Snap, Layer.
"Workspace / Grid/Snap..." : This will bring up the "Workspace Grid/Snap" dialog. This dialog controls the display of a guide grid and the snap mode settings. The "snap" mode causes all points input via the mouse to snap to the nearest grid point or geometry point. The "Grid" setting ("On" or "Off") controls the display of the grid. The "Grid Color" setting controls the color of the grid. The "Grid Point" field specifies the X,Y,Z origin (center) point for the grid. The "Spacing" field specifies the horizontal and vertical spacing of the grid points (the numbers entered in this field, like other fields, should be separated by a space or comma). The "Grid Extent" field specifies the horizontal and vertical extents of the grid (in both directions relative to the grid center point). The "Up Vector" and "Normal Vector" together specify the 3D orientation (rotation) of the grid about the center grid point. The "Normal Vector" points in a perpendicular direction to the plane of the grid.
The "Grid Snap" setting ("On" or "Off") determines if points input by the mouse are snapped to the nearest grid point. The "Grid" display setting must be "On" for the Grid Snap to be enabled. The "Geometry Snap" setting ("On" or "Off") determines if points input by the mouse are snapped to the nearest existing geometry point.
When either snap mode is enabled, a point entered by the mouse must be within about 8 pixels of a snap point. Otherwise, the point will not be accepted (but can be re-entered).
"Workspace / Layer..." : This will bring up the "Workspace Layer" dialog. This dialog controls which layer will receive newly-created geometry, and which layers are visible. VScad3 has 10 layers (numbered from 0 to 9). Layers are a means to logically separate different types of entities. For example, if a floor plan of a house was drafted using VScad3, all the plumbing fixtures could be placed on layer 5. Then if the visibility of all layers except layer 5 was turned off, then only the plumbing would be visible - all other items (walls, electrical fixtures, etc.) would be hidden and thus unselectable and uneditable. In the "Workspace Layer" dialog, the "Current Layer" setting controls which layer the subsequently-created geometry will be placed upon. The "Visible Layers" setting controls which layers will be visible. Any combination of zero or more layers may be visible.
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