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harmonize functions to set camera orientations

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This commit is contained in:
wmayer
2019-01-12 22:59:44 +01:00
parent 563cbba250
commit 11c0c9adde
8 changed files with 282 additions and 133 deletions
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72
src/Gui/CommandView.cpp
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@@ -1284,70 +1284,6 @@ void StdCmdViewTop::activated(int iMsg)
doCommand(Command::Gui,"Gui.activeDocument().activeView().viewTop()");
}
/**
Formulas to get quaternion for axonometric views:
\code
from math import sqrt, degrees, asin, atan
p1=App.Rotation(App.Vector(1,0,0),90)
p2=App.Rotation(App.Vector(0,0,1),alpha)
p3=App.Rotation(p2.multVec(App.Vector(1,0,0)),beta)
p4=p3.multiply(p2).multiply(p1)
from pivy import coin
c=Gui.ActiveDocument.ActiveView.getCameraNode()
c.orientation.setValue(*p4.Q)
\endcode
The angles alpha and beta depend on the type of axonometry
Isometric:
\code
alpha=45
beta=degrees(asin(-sqrt(1.0/3.0)))
\endcode
Dimetric:
\code
alpha=degrees(asin(sqrt(1.0/8.0)))
beta=degrees(-asin(1.0/3.0))
\endcode
Trimetric:
\code
alpha=30.0
beta=-35.0
\endcode
Verification code that the axonomtries are correct:
\code
from pivy import coin
c=Gui.ActiveDocument.ActiveView.getCameraNode()
vo=App.Vector(c.getViewVolume().getMatrix().multVecMatrix(coin.SbVec3f(0,0,0)).getValue())
vx=App.Vector(c.getViewVolume().getMatrix().multVecMatrix(coin.SbVec3f(10,0,0)).getValue())
vy=App.Vector(c.getViewVolume().getMatrix().multVecMatrix(coin.SbVec3f(0,10,0)).getValue())
vz=App.Vector(c.getViewVolume().getMatrix().multVecMatrix(coin.SbVec3f(0,0,10)).getValue())
(vx-vo).Length
(vy-vo).Length
(vz-vo).Length
# Projection
vo.z=0
vx.z=0
vy.z=0
vz.z=0
(vx-vo).Length
(vy-vo).Length
(vz-vo).Length
\endcode
See also:
http://www.mathematik.uni-marburg.de/~thormae/lectures/graphics1/graphics_6_2_ger_web.html#1
http://www.mathematik.uni-marburg.de/~thormae/lectures/graphics1/code_v2/Axonometric/qt/Axonometric.cpp
https://de.wikipedia.org/wiki/Arkussinus_und_Arkuskosinus
*/
//===========================================================================
// Std_ViewIsometric
//===========================================================================
@@ -1369,7 +1305,7 @@ StdCmdViewIsometric::StdCmdViewIsometric()
void StdCmdViewIsometric::activated(int iMsg)
{
Q_UNUSED(iMsg);
doCommand(Command::Gui,"Gui.activeDocument().activeView().viewAxonometric()");
doCommand(Command::Gui,"Gui.activeDocument().activeView().viewIsometric()");
}
//===========================================================================
@@ -1391,8 +1327,7 @@ StdCmdViewDimetric::StdCmdViewDimetric()
void StdCmdViewDimetric::activated(int iMsg)
{
Q_UNUSED(iMsg);
doCommand(Command::Gui,"Gui.activeDocument().activeView()."
"setCameraOrientation((0.567952, 0.103751, 0.146726, 0.803205))");
doCommand(Command::Gui,"Gui.activeDocument().activeView().viewDimetric()");
}
//===========================================================================
@@ -1414,8 +1349,7 @@ StdCmdViewTrimetric::StdCmdViewTrimetric()
void StdCmdViewTrimetric::activated(int iMsg)
{
Q_UNUSED(iMsg);
doCommand(Command::Gui,"Gui.activeDocument().activeView()."
"setCameraOrientation((0.446015, 0.119509, 0.229575, 0.856787))");
doCommand(Command::Gui,"Gui.activeDocument().activeView().viewTrimetric()");
}
//===========================================================================