I want to project the geometric model in G4 onto a plane

Geometry, Fields and Transportation
1

I want to project the geometric model in G4 onto a plane (plane x-y, plane x-z, plane y-z) and draw it with MATLAB, but how do I get the coordinates of the projection points projected onto the plane?

2

I assume that by (plane x-y, plane x-z, plane y-z) you mean the coordinate planes.
The coordinate planes are described by the following equations:
plane x-y: z = 0
plane x-z: y = 0
plane y-z: x = 0

The projections of a point (x,y,z) onto the coordinate planes will have the following coordinates:
on plane x-y: (x,y,0)
on plane x-z: (x,0,z)
on plane y-z: (0,y,z)

3

Thanks so much for your answer!
Now the question is how do I get the projected coordinates of the geometric outline without using the mathematical method.

I wonder if it is possible to directly obtain the projection coordinate information of geometry (such as cube, cylinder, etc.) from GEANT4, for example, from DAWN or VRML output file

4

You will see all the coordinates in a VRML file:

/vis/open VRML2FILE
/vis/viewer/flush

Similarly DAWNFILE.