The "Grid Options" interface allows you to set the global properties of all grids in Ez3d. In Ez3d, there is one universal world, which has no intrinsic dimension. Each coarse grid is 1 unit. Everything else is relative to this unit. You may choose to set the Ez3d unit to be a certain number of feet, inches or meters or even light years (depending on your application). When you select an object its position (in terms of Ez3d units) appears in the X-Y-Z text boxes in the bottom right corner of the main window.
# Grid Divisions
You can set the number of grids divisions in the scene. You may want to reduce clutter by having less number of grid divisions. On the other hand, if you have a large scene with lots of objects, you may want to have a large number of grid divisions.
# Subdivisions / Division
This sets the resolution of the grid subdivisions. Irrespective of the number of subdivisions, each coarse grid division is always 1 Ez3d unit.
Axis Size (in subdivisions)
This sets the spacing of the X-Y-Z annotations for the 3 axes.
# Snap Divisions / Division
When you are moving vertices in "Potter" (see Model - Potter) or "Mold" (see Model - Mold), you sometimes want to position them precisely. If you have "Snap to Grid" on, the vertex that you are moving will automatically snap to the nearest subdivision crossing. You can set the fineness of the snap grid to be finer that the displayed subdivisions. For example, if you set the "# Snap divisions / subdivision" to be 2, and turn on "Snap to Grid", you will notice that when you are moving spline points in "Potter", the points will snap to an visible grid twice as fine as the subdivisions that are visible.
Hint: If you are really concerned about precise positioning, you should "box-select" the vertex using the left mouse, and type in the position values in the X-Y-Z text boxes. (See Model - Potter and Model - Mold for details).
