Hi Usman,

Sorry for the delay in our answer.
We have produced a new version of Roassal3d with a support for edges. Consider this example:
-=-=-=-= -=-=-=-= -=-=-=-= -=-=-=-= 
| view e1 e2 e3 |
view := R3View new.
e1 := R3CubeShape element.
e1 translateToX: 1 y: 1 z: 1.

e2 := R3UVSphereShape element.
e2 translateToX: -1 y: 1 z: 1.

e3 := R3ConeShape element.
e3 translateToX: -1 y: -1 z: 1.

view add: e1; add: e2; add: e3.
view add: (R3LineShape blue elementFrom: e1 to: e2).
view add: (R3LineShape blue elementFrom: e2 to: e3).
view addInteraction: R3MouseControl new.
view open .
-=-=-=-= -=-=-=-= -=-=-=-= -=-=-=-= 

It will produces the following:


On Oct 14, 2013, at 7:57 AM, Usman Bhatti <usman.bhatti@gmail.com> wrote:


I am trying to create a new shape, an edge, in Roassal 3D between two entities. My idea is to draw an edge from the position vector of a source shape to the position vector of a target. The edge is created but not at the correct position, it might be due to the fact that I need to set the position of the edge shape or mismatch between position in Roassal and OpenGL. Can you please have a look?

Attached with this mail my proposition for the shape that works with the following script.

|el1 el2 els el3| 
view := R3View new.
view camera translateLeft: -2; translateBackward:3.
el1 := (R3CubeShape new color: Color green) element.
el2 := (R3CubeShape new color: Color red) element.
el3 := (R3CubeShape new color: Color cyan) element.
els := { el1. el2. el3 }.
view add: (R3EdgeShape new from: el2; to: el3; size: 1; color: Color blue) element.
view addAll: els.
R3XLineLayout on: els.
view addInteraction: R3MouseControl new.
view open.
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Alexandre Bergel  http://www.bergel.eu