Opened 13 years ago

Closed 12 years ago

#1777 closed defect (fixed)

jmol up/down metaphor confusing in the "View" right-click menu

Reported by: jason Owned by: jason
Priority: minor Milestone: sage-3.3
Component: graphics Keywords:
Cc: Merged in:
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Description

I noticed a potentially confusing thing in the totally awesome 3d graphics we now have with jmol.

sage: arrow3d((0,0,0),(1,1,1))

draws a very nice-looking 3d arrow in a bounding cube. When I right-click on the graphic and choose "View | front", it swings the viewpoint around so that I'm looking at the *top* of the original cube (so that I'm looking in the direction of the negative z-axis). I realize that the standard computer graphics viewpoint has the z-axis coming out of the monitor, so "front" is a valid label for this position in that sense, but it can be confusing to students who would have said that what is labeled as the "front" position is actually showing the top of graph. I imagine that it would be even more confusing to calc 3 students that the labeled "top" position is looking in the negative y-axis direction *with the positive z pointing down*.

The positions and actual viewing directions are thus:

"front" = looking down negative z-axis, positive y-axis pointing up "back" = looking down positive z-axis, positive y-axis pointing up

"left" = looking down positive x-axis, positive y-axis pointing up "right" = looking down negative x-axis, positive y-axis pointing up

"top" = looking down negative y-axis, positive z-axis pointing *down* "bottom" = looking down positive y-axis, positive z-axis pointing up

I think it would be less confusing if the View menu just listed viewing directions instead of assigning a "up" and "down" metaphor that can change depending on if you are doing math or doing computer science.

Jason

Change History (3)

comment:1 Changed 13 years ago by jason

See #2873 for how to fix this.

comment:2 Changed 12 years ago by jason

  • Owner changed from was to jason
  • Status changed from new to assigned

comment:3 Changed 12 years ago by mabshoff

  • Milestone changed from sage-3.4.1 to sage-3.3
  • Resolution set to fixed
  • Status changed from assigned to closed

Fixed via #2873 in Sage 3.3.rc1.

Cheers,

Michael

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