Isometric Perspective Ruler

This ruler was added in version 17.01.06.

Isometric projection is a method for visually representing three-dimensional objects in two dimensions in technical and engineering drawings. It is often used in game art.

This mode will help you draw isometric art. It has 3 rulers for which you can change the angles.

The Line Select Mode parameter determines which ruler is chosen when you draw:

• Manual start & change: You have to manually choose which ruler to start drawing on by pressing the shift key. You can change lines while drawing by pressing the control key.
• Auto start, manual change: The starting ruler will be chosen automatically based on the direction of the first few samples of your line. You can change directions while drawing by pressing the control key.
• Auto start & change: Same as the previous option, but you can change lines while drawing without pressing control. This mode is great for fast 3d sketching.

When Box Mode is enabled, your pen position will be clamped to a 3d bounding box while you draw, helping you quickly close boxes without overshooting. The dimensions of the box are determined automatically one at a time as you first draw on each axis. The dimensions are reset when you lift the pen.

While not drawing, holding the control key will also display the angle control points, the measure point unit distance control point, and the freeze mode toggle control point.

Clicking on the Freeze Mode control point (or pressing the associated keyboard shortcut) will create a fixed frame of reference at your pen position. You can use this and the measure points to accurately subdivide sections.