## Measure (only EX edition)

Measure command provides the following operations.

### Length

A length of a line (or a polyline) is displayed by clicking. A creation of a polyline can be finished by clicking a right button.

Click a start point for measuring, |  | Click one by one, |  | A length of a polyline is displayed.

When [Pt] or [Ln] is active in the Edit Option, you can snap the measuring position to a vertex or a line. It is useful for measuring a distance between vertices.

A snapping is available in the Length mode and the Angle mode.

### Angle

An angle is displayed by clicking three times on an object.

Click a first point, |  | Click a second point, |  | Click a third point, and an angle is displayed.

You can move a point in a polyline for an angle measurement by dragging it.

An angle is displayed. |  | Move a vertex of a polygon, |  | The angle is updated.

Length and Thickness can be also move the point.

### Perimeter

When you click any point on the object, it measure the object's perimeter including the point.

Auto
  It detects the direction of the perimeter from the direction of clicked edge automatically.
YZ
  It measure the perimeter parallel to the YZ plane.
XZ
  It measure the perimeter parallel to the XZ plane.
XY
  It measure the perimeter parallel to the XY plane.
Arb.
  Click two points and specify the line, measure the perimeter along the line.

  Click two points |  | Measure along the line

### Thick

It displays a thick when you click on an object. The direction measuring a thickness is selected from a normal direction or an eye direction.

Normal
  It displays a thickness to the normal direction at the clicked position.
Eye
  It displays a thickness to the eye direction at the clicked position.
Colorize thickness
  It visualizes a thickness as a vertex color. A display range of a thickness can be adjusted by a slider. The color is applied [Color map] of [Configuration > Display].

### Object

It displays the size of the bounding box including a whole object by clicking the object.

Click on an object. |  | A size of a bounding box is displayed.

The displayed size for the bounding box is also updated when the object is modified.

### Change 3D / 2D

This item is available only when measuring [Length] or [Angle].

3D
  It measures the distance between two or more points in three dimensional space.

2D
  It measures the distance between two or more points on two-dimensionally projected plane. Even if you rotate the camera view, it doesn't move the measuring position on two-dimensionally projected plane.
  *2D mode is available when [Perspective] is [Ortho] in View header.

  Even if you rotate the camera view, it doesn't move the measuring position

### Show area

If you check this item, it measures the area including the specified multiple points.
This item is available only when measuring [Length] or [Perimeter].

In [Length], it measures the area of a triangle composed of clicked three points. If you click four or more points, polygon is divided into multiple triangles and calculate the area.

When you specify four or more points in [3D] mode, polygons may not be constructed on the same plane. The area of tis polygon is inaccurate. (Different values are calculated depending on the method of division into triangles.)
Don't use this value as accurate.

When "(Non-plane)" is displayed, the value is not accurately.

In [Perimeter], it measure the area of cross section on the object.

### Clear

It erases all measures.

Each measure can be erased by clicking the icon.