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Fix viewer issue with Tower and Chase View.

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When looking _at_ a model with an x,y offset of 0,
then the view heading has no effect. So, force heading offset property
to 0 to keep other property consumers from running incorrect calculations.
=> Trying to rotate the heading offset in Tower/Chase view no longer
rotates the blue sky around the aircraft, though the viewer itself
isn't rotating anything.
This commit is contained in:
ThorstenB 2011-01-30 17:35:07 +01:00
parent 32b69f823a
commit 91d001ff4e
1 changed files with 16 additions and 1 deletions
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17
src/Main/viewer.cxx
View file

@ -289,7 +289,14 @@ void
FGViewer::setHeadingOffset_deg (double heading_offset_deg)
{
_dirty = true;
_heading_offset_deg = heading_offset_deg;
if (_at_model && (_offset_m.x() == 0.0)&&(_offset_m.y() == 0.0))
{
/* avoid optical effects (e.g. rotating sky) when looking at something
* with heading offsets x==y==0 (view heading cannot change). */
_heading_offset_deg = 0.0;
}
else
_heading_offset_deg = heading_offset_deg;
}
void
@ -317,6 +324,14 @@ void
FGViewer::setGoalHeadingOffset_deg (double goal_heading_offset_deg)
{
_dirty = true;
if (_at_model && (_offset_m.x() == 0.0)&&(_offset_m.y() == 0.0))
{
/* avoid optical effects (e.g. rotating sky) when looking at something
* with heading offsets x==y==0 (view heading cannot change). */
_goal_heading_offset_deg = 0.0;
return;
}
_goal_heading_offset_deg = goal_heading_offset_deg;
while ( _goal_heading_offset_deg < 0.0 ) {
_goal_heading_offset_deg += 360;