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implement Isometric, Dimetric and Trimetric projection
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@wwmayer
wwmayer committed Jan 10, 2019
1 parent a69abb3 commit 64a94ae
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Showing 3 changed files with 144 additions and 18 deletions.
138 changes: 125 additions & 13 deletions src/Gui/CommandView.cpp
View file
Expand Up @@ -1284,30 +1284,140 @@ void StdCmdViewTop::activated(int iMsg)
doCommand(Command::Gui,"Gui.activeDocument().activeView().viewTop()");
}

//===========================================================================
// Std_ViewAxo
//===========================================================================
DEF_3DV_CMD(StdCmdViewAxo)

StdCmdViewAxo::StdCmdViewAxo()
: Command("Std_ViewAxo")
/**
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
//===========================================================================
DEF_3DV_CMD(StdCmdViewIsometric)

StdCmdViewIsometric::StdCmdViewIsometric()
: Command("Std_ViewIsometric")
{
sGroup = QT_TR_NOOP("Standard-View");
sMenuText = QT_TR_NOOP("Axonometric");
sToolTipText= QT_TR_NOOP("Set to axonometric view");
sWhatsThis = "Std_ViewAxo";
sStatusTip = QT_TR_NOOP("Set to axonometric view");
sMenuText = QT_TR_NOOP("Isometric");
sToolTipText= QT_TR_NOOP("Set to isometric view");
sWhatsThis = "Std_ViewIsometric";
sStatusTip = QT_TR_NOOP("Set to isometric view");
sPixmap = "view-axonometric";
sAccel = "0";
eType = Alter3DView;
}

void StdCmdViewAxo::activated(int iMsg)
void StdCmdViewIsometric::activated(int iMsg)
{
Q_UNUSED(iMsg);
doCommand(Command::Gui,"Gui.activeDocument().activeView().viewAxonometric()");
}

//===========================================================================
// Std_ViewDimetric
//===========================================================================
DEF_3DV_CMD(StdCmdViewDimetric)

StdCmdViewDimetric::StdCmdViewDimetric()
: Command("Std_ViewDimetric")
{
sGroup = QT_TR_NOOP("Standard-View");
sMenuText = QT_TR_NOOP("Dimetric");
sToolTipText= QT_TR_NOOP("Set to dimetric view");
sWhatsThis = "Std_ViewDimetric";
sStatusTip = QT_TR_NOOP("Set to dimetric view");
eType = Alter3DView;
}

void StdCmdViewDimetric::activated(int iMsg)
{
Q_UNUSED(iMsg);
doCommand(Command::Gui,"Gui.activeDocument().activeView()."
"setCameraOrientation((0.567952, 0.103751, 0.146726, 0.803205))");
}

//===========================================================================
// Std_ViewTrimetric
//===========================================================================
DEF_3DV_CMD(StdCmdViewTrimetric)

StdCmdViewTrimetric::StdCmdViewTrimetric()
: Command("Std_ViewTrimetric")
{
sGroup = QT_TR_NOOP("Standard-View");
sMenuText = QT_TR_NOOP("Trimetric");
sToolTipText= QT_TR_NOOP("Set to trimetric view");
sWhatsThis = "Std_ViewTrimetric";
sStatusTip = QT_TR_NOOP("Set to trimetric view");
eType = Alter3DView;
}

void StdCmdViewTrimetric::activated(int iMsg)
{
Q_UNUSED(iMsg);
doCommand(Command::Gui,"Gui.activeDocument().activeView()."
"setCameraOrientation((0.446015, 0.119509, 0.229575, 0.856787))");
}

//===========================================================================
// Std_ViewRotateLeft
//===========================================================================
Expand Down Expand Up @@ -2970,7 +3080,9 @@ void CreateViewStdCommands(void)
rcCmdMgr.addCommand(new StdCmdViewRear());
rcCmdMgr.addCommand(new StdCmdViewRight());
rcCmdMgr.addCommand(new StdCmdViewTop());
rcCmdMgr.addCommand(new StdCmdViewAxo());
rcCmdMgr.addCommand(new StdCmdViewIsometric());
rcCmdMgr.addCommand(new StdCmdViewDimetric());
rcCmdMgr.addCommand(new StdCmdViewTrimetric());
rcCmdMgr.addCommand(new StdCmdViewFitAll());
rcCmdMgr.addCommand(new StdCmdViewVR());
rcCmdMgr.addCommand(new StdCmdViewFitSelection());
Expand Down
10 changes: 9 additions & 1 deletion src/Gui/NaviCube.cpp
View file
Expand Up @@ -1315,8 +1315,16 @@ void ViewIsometricCmd::activated(int iMsg)
//p2=App.Rotation(App.Vector(0,0,1),135)
//p3=App.Rotation(App.Vector(-1,1,0),degrees(asin(-sqrt(1.0/3.0))))
//p4=p3.multiply(p2).multiply(p1)
//
//Command::doCommand(Command::Gui,"Gui.activeDocument().activeView()."
// "setCameraOrientation((0.17592, 0.424708, 0.820473, 0.339851))");
//from math import sqrt, degrees, asin
//p1=App.Rotation(App.Vector(1,0,0),90)
//p2=App.Rotation(App.Vector(0,0,1),45)
//p3=App.Rotation(App.Vector(1,1,0),degrees(asin(-sqrt(1.0/3.0))))
//p4=p3.multiply(p2).multiply(p1)
Command::doCommand(Command::Gui,"Gui.activeDocument().activeView()."
"setCameraOrientation((0.17592, 0.424708, 0.820473, 0.339851))");
"setCameraOrientation((0.424708, 0.17592, 0.339851, 0.820473))");
}

DEF_3DV_CMD(ViewOrthographicCmd)
Expand Down
14 changes: 10 additions & 4 deletions src/Gui/Workbench.cpp
View file
Expand Up @@ -449,7 +449,7 @@ void StdWorkbench::setupContextMenu(const char* recipient, MenuItem* item) const
MenuItem* StdViews = new MenuItem;
StdViews->setCommand( "Standard views" );

*StdViews << "Std_ViewAxo" << "Separator" << "Std_ViewFront" << "Std_ViewTop" << "Std_ViewRight"
*StdViews << "Std_ViewIsometric" << "Separator" << "Std_ViewFront" << "Std_ViewTop" << "Std_ViewRight"
<< "Std_ViewRear" << "Std_ViewBottom" << "Std_ViewLeft"
<< "Separator" << "Std_ViewRotateLeft" << "Std_ViewRotateRight";

Expand Down Expand Up @@ -506,10 +506,16 @@ MenuItem* StdWorkbench::setupMenuBar() const
<< "Separator" << "Std_Placement" /*<< "Std_TransformManip"*/ << "Std_Alignment"
<< "Std_Edit" << "Separator" << "Std_DlgPreferences";

MenuItem* axoviews = new MenuItem;
axoviews->setCommand("Axonometric");
*axoviews << "Std_ViewIsometric"
<< "Std_ViewDimetric"
<< "Std_ViewTrimetric";

// Standard views
MenuItem* stdviews = new MenuItem;
stdviews->setCommand("Standard views");
*stdviews << "Std_ViewFitAll" << "Std_ViewFitSelection" << "Std_ViewAxo"
*stdviews << "Std_ViewFitAll" << "Std_ViewFitSelection" << axoviews
<< "Separator" << "Std_ViewFront" << "Std_ViewTop"
<< "Std_ViewRight" << "Separator" << "Std_ViewRear"
<< "Std_ViewBottom" << "Std_ViewLeft"
Expand Down Expand Up @@ -619,7 +625,7 @@ ToolBarItem* StdWorkbench::setupToolBars() const
// View
ToolBarItem* view = new ToolBarItem( root );
view->setCommand("View");
*view << "Std_ViewFitAll" << "Std_ViewFitSelection" << "Std_DrawStyle" << "Separator" << "Std_ViewAxo" << "Separator" << "Std_ViewFront"
*view << "Std_ViewFitAll" << "Std_ViewFitSelection" << "Std_DrawStyle" << "Separator" << "Std_ViewIsometric" << "Separator" << "Std_ViewFront"
<< "Std_ViewTop" << "Std_ViewRight" << "Separator" << "Std_ViewRear" << "Std_ViewBottom"
<< "Std_ViewLeft" << "Separator" << "Std_MeasureDistance" ;

Expand All @@ -638,7 +644,7 @@ ToolBarItem* StdWorkbench::setupCommandBars() const
// View
ToolBarItem* view = new ToolBarItem( root );
view->setCommand("Standard views");
*view << "Std_ViewFitAll" << "Std_ViewFitSelection" << "Std_ViewAxo" << "Separator"
*view << "Std_ViewFitAll" << "Std_ViewFitSelection" << "Std_ViewIsometric" << "Separator"
<< "Std_ViewFront" << "Std_ViewRight" << "Std_ViewTop" << "Separator"
<< "Std_ViewRear" << "Std_ViewLeft" << "Std_ViewBottom";
// Special Ops
Expand Down

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