Logo Arts

To switch to 3D mode, use the primitive Perspective. To return to 2D mode use Window, Wrap or Fence (see Drawing).

Primitive	Alt	Action
Perspective	3D	Switch to 3D mode.
SetXYZ x y z SetZ z SetOrientation [r p h]		Move turtle to position x y z. Move turtle to depth position z. Set turtle's orientation (roll, pitch, heading).
LeftRoll n RightRoll n SetRoll n	LR RR	Roll turtle left by n degrees. Roll turtle right by n degrees. Set turtle's roll angle to n degrees.
DownPitch n UpPitch n SetPitch n	Down Up	Pitch turtle down by n degrees. Pitch turtle up by n degrees. Set turtle's pitch angle to n degrees.

Underlined Set can be removed from a primitive name in order to return information.
eg. SetHeading sets the heading of the turtle. Heading returns the heading of the turtle.

3D viewer

Four pairs of primitives for polygons, lines, points and text. If not used, nothing will be drawn in the 3D Viewer window.

Primitive	Action
View3D	Launch interactive 3D viewer, with fog and light controllers.
PolyStart PolyEnd	Start recording following turtle moves as polygons. Stop polygon recording.
LineStart LineEnd	Start recording following turtle moves as lines. Stop line recording.
PointStart PointEnd	Start recording following turtle moves as points. Stop point recording.
TextStart TextEnd	Start recording following as text. Stop text recording.

Note

1. View3d is only available in 3D mode.
2. The following primitives can be used in both 2D and 3D modes:
   Arc Circle ClearScreen Distance Dot Heading Home Label LabelLength Position SetHeading SetPosition SetX SetY Towards
3. In perspective mode, you can switch to animation mode to animate a perspective drawing.