suzanne.soy/FreeCAD
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

round the drawing view projection direction

Browse Source 
before calculating the necessary view rotation to anticipate the
rounding that happens on saving and reloading the file. fixes #1909
This commit is contained in:
Sebastian Hoogen 2015-01-24 23:37:38 +01:00
parent f32caef40c
commit 5a9484f06c
1 changed files with 13 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
src/Mod/Drawing/Gui/TaskOrthoViews.cpp
View File

@ -235,7 +235,17 @@ void orthoview::set_projection(gp_Ax2 cs)
Z_dir = cs.Direction();
// coord system of created view - same code as used in projection algos
actual_cs = gp_Ax2(gp_Pnt(0,0,0), gp_Dir(Z_dir.X(),Z_dir.Y(),Z_dir.Z()));
// actual_cs = gp_Ax2(gp_Pnt(0,0,0), gp_Dir(Z_dir.X(),Z_dir.Y(),Z_dir.Z()));
// but as the file gets saved the projection direction gets rounded.
// this can lead to choosing a different normal x-direction when the file
// gets reloaded see issue #1909
// we anticipate the actual_cs after reloading by rounding the Z_dir now
const double x = round( Z_dir.X() * 1e12 ) / 1e12;
const double y = round( Z_dir.Y() * 1e12 ) / 1e12;
const double z = round( Z_dir.Z() * 1e12 ) / 1e12;
actual_cs = gp_Ax2(gp_Pnt(0,0,0), gp_Dir(x,y,z));
actual_X = actual_cs.XDirection();
// angle between desired projection and actual projection
@ -247,7 +257,8 @@ void orthoview::set_projection(gp_Ax2 cs)
calcCentre();
this_view->Direction.setValue(Z_dir.X(), Z_dir.Y(), Z_dir.Z());
//this_view->Direction.setValue(Z_dir.X(), Z_dir.Y(), Z_dir.Z());
this_view->Direction.setValue(x,y,z);
this_view->Rotation.setValue(180 * rotation / PI);
}