| Object Graphics: Combine 2d with 3d [message #40256] |
Sun, 01 August 2004 09:50 |
Ralf Schaa
Messages: 37
Registered: June 2001
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Dear all,
actually the mail-subject is not quite correct: I like to plot a
spacecraft trajectory in 3d, and because it looks so nice :-) I like a
sphere (a planet ...) in the the middle of the plot.
I already have a set of programs that does it with direct graphics, but
the programs are very quick and dirty and large and not written by
myself, so I thougt I do it myself with object graphics ...
On David's website I found the SIMPLE_SURFACE program, from wich I
started, which means I copied the things I needed into my test program.
Now I have a 3d-Plot with a sphere (Orb-Object) in the middle and it
looks nice. Before adding a trajectory , I'd like to add some simple
plottings like a straight line in the xy-plane, or some other plane just
to see how things work, but that isn't an easy thing to do, is it?
This is what i have done after setting up the sphere in 3d:
; A plot object
thisPlot = Obj_New("IDLgrPLOT")
thisPlotModel = Obj_New('IDLgrModel')
thisPlot->SetProperty,DataX=[0,1],DataY=[0,0]
thisPlotModel->Add,thisPlot
objView->Add,thisPlotModel
I wasn't expecting things would look okay right now, but i could not
find how to manipulate the graph so that it would match in the scene: it
is always like a 2d curve glued in front of the 3d plot ...
So, how are these kind of things treated ?
Regards,
Ralf
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