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Gui: move class Camera to own source files

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This commit is contained in:
wmayer
2023-03-20 10:48:29 +01:00
parent 03d2479047
commit 2aef0cfa61
7 changed files with 199 additions and 132 deletions
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142
src/Gui/Camera.cpp Normal file
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@@ -0,0 +1,142 @@
// SPDX-License-Identifier: LGPL-2.1-or-later
/***************************************************************************
* Copyright (c) 2023 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of FreeCAD. *
* *
* FreeCAD is free software: you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation, either version 2.1 of the *
* License, or (at your option) any later version. *
* *
* FreeCAD is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with FreeCAD. If not, see *
* <https://www.gnu.org/licenses/>. *
* *
**************************************************************************/
#include "PreCompiled.h"
#include "Camera.h"
using namespace Gui;
/**
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
*/
SbRotation Camera::rotation(Camera::Orientation view)
{
switch (view) {
case Top:
return SbRotation(0, 0, 0, 1);
case Bottom:
return SbRotation(1, 0, 0, 0);
case Front: {
auto root = (float)(sqrt(2.0)/2.0);
return SbRotation(root, 0, 0, root);
}
case Rear: {
auto root = (float)(sqrt(2.0)/2.0);
return SbRotation(0, root, root, 0);
}
case Right:
return SbRotation(0.5, 0.5, 0.5, 0.5);
case Left:
return SbRotation(-0.5, 0.5, 0.5, -0.5);
case Isometric:
//from math import sqrt, degrees, asin
//p1=App.Rotation(App.Vector(1,0,0),45)
//p2=App.Rotation(App.Vector(0,0,1),-45)
//p3=p2.multiply(p1)
//return SbRotation(0.353553f, -0.146447f, -0.353553f, 0.853553f);
//from math import sqrt, degrees, asin
//p1=App.Rotation(App.Vector(1,0,0),90)
//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)
//return SbRotation(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),45)
//p3=App.Rotation(App.Vector(1,1,0),degrees(asin(-sqrt(1.0/3.0))))
//p4=p3.multiply(p2).multiply(p1)
return SbRotation(0.424708f, 0.17592f, 0.339851f, 0.820473f);
case Dimetric:
return SbRotation(0.567952f, 0.103751f, 0.146726f, 0.803205f);
case Trimetric:
return SbRotation(0.446015f, 0.119509f, 0.229575f, 0.856787f);
default:
return SbRotation(0, 0, 0, 1);
}
}

53
src/Gui/Camera.h Normal file
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@@ -0,0 +1,53 @@
// SPDX-License-Identifier: LGPL-2.1-or-later
/***************************************************************************
* Copyright (c) 2023 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of FreeCAD. *
* *
* FreeCAD is free software: you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation, either version 2.1 of the *
* License, or (at your option) any later version. *
* *
* FreeCAD is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with FreeCAD. If not, see *
* <https://www.gnu.org/licenses/>. *
* *
**************************************************************************/
#ifndef GUI_CAMERA_H
#define GUI_CAMERA_H
#include <Inventor/SbRotation.h>
#include <Base/Rotation.h>
#include <FCGlobal.h>
namespace Gui {
class GuiExport Camera
{
public:
enum Orientation {
Top,
Bottom,
Front,
Rear,
Right,
Left,
Isometric,
Dimetric,
Trimetric,
};
static SbRotation rotation(Orientation view);
};
}
#endif // GUI_CAMERA_H

2
src/Gui/SoFCDB.cpp
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@@ -48,6 +48,7 @@
#include <zipios++/gzipoutputstream.h>
#include "SoFCDB.h"
#include "Camera.h"
#include "Flag.h"
#include "GestureNavigationStyle.h"
#include "NavigationStyle.h"
@@ -68,7 +69,6 @@
#include "SoMouseWheelEvent.h"
#include "SoNavigationDragger.h"
#include "SoTextLabel.h"
#include "View3DPy.h"
#include "Inventor/MarkerBitmaps.h"
#include "Inventor/SmSwitchboard.h"
#include "Inventor/SoAutoZoomTranslation.h"

1
src/Gui/SplitView3DInventor.cpp
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@@ -34,6 +34,7 @@
#include "SplitView3DInventor.h"
#include "Application.h"
#include "Camera.h"
#include "Document.h"
#include "NavigationStyle.h"
#include "SoFCSelectionAction.h"

1
src/Gui/View3DInventor.cpp
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@@ -57,6 +57,7 @@
#include "View3DInventor.h"
#include "View3DSettings.h"
#include "Application.h"
#include "Camera.h"
#include "Document.h"
#include "FileDialog.h"
#include "MainWindow.h"

114
src/Gui/View3DPy.cpp
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@@ -52,6 +52,7 @@
#include "View3DPy.h"
#include "Camera.h"
#include "Document.h"
#include "NavigationStyle.h"
#include "PythonWrapper.h"
@@ -373,119 +374,6 @@ Py::Object View3DInventorPy::boxZoom(const Py::Tuple& args, const Py::Dict& kwds
return Py::None();
}
/**
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
*/
SbRotation Camera::rotation(Camera::Orientation view)
{
switch (view) {
case Top:
return SbRotation(0, 0, 0, 1);
case Bottom:
return SbRotation(1, 0, 0, 0);
case Front: {
auto root = (float)(sqrt(2.0)/2.0);
return SbRotation(root, 0, 0, root);
}
case Rear: {
auto root = (float)(sqrt(2.0)/2.0);
return SbRotation(0, root, root, 0);
}
case Left:
return SbRotation(-0.5, 0.5, 0.5, -0.5);
case Right:
return SbRotation(0.5, 0.5, 0.5, 0.5);
case Isometric:
//from math import sqrt, degrees, asin
//p1=App.Rotation(App.Vector(1,0,0),45)
//p2=App.Rotation(App.Vector(0,0,1),-45)
//p3=p2.multiply(p1)
//return SbRotation(0.353553f, -0.146447f, -0.353553f, 0.853553f);
//from math import sqrt, degrees, asin
//p1=App.Rotation(App.Vector(1,0,0),90)
//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)
//return SbRotation(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),45)
//p3=App.Rotation(App.Vector(1,1,0),degrees(asin(-sqrt(1.0/3.0))))
//p4=p3.multiply(p2).multiply(p1)
return SbRotation(0.424708f, 0.17592f, 0.339851f, 0.820473f);
case Dimetric:
return SbRotation(0.567952f, 0.103751f, 0.146726f, 0.803205f);
case Trimetric:
return SbRotation(0.446015f, 0.119509f, 0.229575f, 0.856787f);
default:
return SbRotation(0, 0, 0, 1);
}
}
Py::Object View3DInventorPy::viewBottom(const Py::Tuple& args)
{
if (!PyArg_ParseTuple(args.ptr(), ""))

18
src/Gui/View3DPy.h
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@@ -35,24 +35,6 @@ namespace Gui {
class View3DInventor;
class Camera
{
public:
enum Orientation {
Top,
Bottom,
Front,
Rear,
Left,
Right,
Isometric,
Dimetric,
Trimetric,
};
static SbRotation rotation(Orientation view);
};
class View3DInventorPy : public Py::PythonExtension<View3DInventorPy>
{
public: