kindred/create
1
1
Fork 0
Code Issues 37 Pull Requests Actions Packages Projects 9 Releases 2 Wiki Activity

Gui: move class Camera to own source files

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

114
src/Gui/View3DPy.cpp
View File

@@ -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(), ""))