By default, Ortho Snapping
Mode is not directly accessible in the 3ds Max Design user interface.
To add it as a button on the Snaps toolbar, follow
When drawing a
Line spline or
Ortho Snapping Mode constrains line creation to the horizontal
or vertical directions relative to the active grid. That is, with
Ortho on, you can draw only lines that are parallel to lines of
the active grid.
Ortho is particularly
useful for drawing plans where all lines must be at 90 degrees to
each other, such as a house plan. To constrain line-drawing to other
angle increments, use
Polar Snapping Mode instead.
The following provisions
apply to using Ortho:
- Use of Ortho is mutually exclusive of
use of the
Snapping Mode toggle; only one can be
active at a time.
- Ortho Snapping applies primarily to the
creation of line splines and wall objects. It can be used while
creating other objects, but results are likely to be unsatisfactory.
Ortho mode displays a
compass which gives a readout of the current angle of the input
relative to the positive direction of the local X axis.
NoteIf you hold down
the Alt key in Ortho
mode, the next point becomes doubly constrained by both the previous point
and the first point of the current object. This allows you to close
splines precisely. In this mode, two compasses are displayed; one
each at the first and previous points.
To add Ortho Snapping Mode to the Snaps
- Open the Snaps toolbar, if necessary.
To do so, right-click an empty part of the main toolbar, such as
the area directly below one of the drop-down lists, and choose Snaps.
- Drag the right end of the toolbar to
the right to make room for a new button.
- Choose Customize menu Customize User Interface.
This opens the Customize User Interface dialog.
- On the dialog, click the Toolbars tab.
- Scroll down the Action list on the dialog
to the Ortho Snapping Mode item. You can jump to the O section by
clicking any item in the list and then pressing O on the keyboard.
- Drag the Ortho Snapping Mode item from
the list to the empty section of the Snaps toolbar. This adds the
button to the toolbar.
- Close the Customize User Interface dialog.
3ds Max Design automatically saves the toolbar in
its revised state and makes the new button a permanent part of the
To use Ortho:
- Turn on (Ortho
- Begin to draw a Line spline.
An orange compass appears where you place the
first point, along with a red number indicating the angle of the
current line segment with the positive direction of the local X
- Move the mouse cursor around in the viewport.
The line jumps to 90-degree angle increments
on the local X axis, while the compass reading updates to show the
- Click to place the next vertex.
- Repeat steps 3 and 4 until you're ready
to complete the shape.
- Do either of the following:
- To finish the shape at the most recent
vertex without closing it, right-click anywhere.
- To finish the shape by closing it, position
the mouse cursor close to the first point and then click. A small
dialog opens asking if you want to close the spline; click Yes.