I. INTRODUCTION
The latest tools available for editing 3D mesh objects
have complex interfaces that are capable of constructing
orthographic views (front view, top view, side view) and
perspective views. 3D computer graphics modeling software
that is meant to be operated in a 2D environment comes
equipped with a mouse and a 2D display; it is difficult to use
these tools to edit 3D mesh objects. Editing a 3D mesh
object is a complex process because it is difficult to locate
the depth of a vertex in a 2D environment. However, the
focus of research has not been on editing tools for 3D mesh
objects as much as it has been one a geometric
modeling[1][2]. Additionally, a vanishing line mesh has been
to be effective for depth representation in 3D scene on a
monocular computer display[3].
Depth sensation on a monocular computer display is
constructed via certain depth cues[4][5]. These depth cues in
human perception are as follows: 1) “Linear Perspective”
which implies that parallel lines converge to a vanishing
point. 2) “Relative Height and Size,” which is represented by
changing the location of horizontal line and the object size
depending on depth position. 3) The gradient of a color,
which serves as a depth cue for humans.
In this paper, we propose a depth control plane in
perspective view for virtual 3D environments, wherein a
vanishing line mesh is used as the auxiliary depth coordinate.
Further, a depth control plane is used to specify and move
the depth position of vertices. Additionally, a sense of depth
via color tone is applied to the 3D computer graphics
modeling tool. This proposed depth control plane enables
intuitive and efficient interaction in the manipulation of a 3D
mesh object