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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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253
src/Gui/View3DPy.cpp
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@@ -88,8 +88,12 @@ void View3DInventorPy::init_type()
add_varargs_method("viewRear",&View3DInventorPy::viewRear,"viewRear()");
add_varargs_method("viewRight",&View3DInventorPy::viewRight,"viewRight()");
add_varargs_method("viewTop",&View3DInventorPy::viewTop,"viewTop()");
add_varargs_method("viewAxometric",&View3DInventorPy::viewAxonometric,"viewAxonometric()"); // for backward compatibility
add_varargs_method("viewAxonometric",&View3DInventorPy::viewAxonometric,"viewAxonometric()");
add_varargs_method("viewAxometric",&View3DInventorPy::viewIsometric,"viewAxonometric()"); // for backward compatibility
add_varargs_method("viewAxonometric",&View3DInventorPy::viewIsometric,"viewAxonometric()");
add_varargs_method("viewIsometric",&View3DInventorPy::viewIsometric,"viewIsometric()");
add_varargs_method("viewDimetric",&View3DInventorPy::viewDimetric,"viewDimetric()");
add_varargs_method("viewTrimetric",&View3DInventorPy::viewTrimetric,"viewTrimetric()");
add_varargs_method("viewDefaultOrientation",&View3DInventorPy::viewDefaultOrientation,"viewDefaultOrientation()");
add_varargs_method("viewRotateLeft",&View3DInventorPy::viewRotateLeft,"viewRotateLeft()");
add_varargs_method("viewRotateRight",&View3DInventorPy::viewRotateRight,"viewRotateRight()");
add_varargs_method("zoomIn",&View3DInventorPy::zoomIn,"zoomIn()");
@@ -320,13 +324,126 @@ 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(0, 1, 0, 0);
case Front: {
float root = (float)(sqrt(2.0)/2.0);
return SbRotation(root, 0, 0, root);
}
case Rear: {
float 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(), ""))
throw Py::Exception();
try {
_view->getViewer()->setCameraOrientation(SbRotation(0, -1, 0, 0));
_view->getViewer()->setCameraOrientation(Camera::rotation(Camera::Bottom));
}
catch (const Base::Exception& e) {
throw Py::RuntimeError(e.what());
@@ -347,8 +464,7 @@ Py::Object View3DInventorPy::viewFront(const Py::Tuple& args)
throw Py::Exception();
try {
float root = (float)(sqrt(2.0)/2.0);
_view->getViewer()->setCameraOrientation(SbRotation(-root, 0, 0, -root));
_view->getViewer()->setCameraOrientation(Camera::rotation(Camera::Front));
}
catch (const Base::Exception& e) {
throw Py::RuntimeError(e.what());
@@ -369,7 +485,7 @@ Py::Object View3DInventorPy::viewLeft(const Py::Tuple& args)
throw Py::Exception();
try {
_view->getViewer()->setCameraOrientation(SbRotation(-0.5, 0.5, 0.5, -0.5));
_view->getViewer()->setCameraOrientation(Camera::rotation(Camera::Left));
}
catch (const Base::Exception& e) {
throw Py::RuntimeError(e.what());
@@ -390,8 +506,7 @@ Py::Object View3DInventorPy::viewRear(const Py::Tuple& args)
throw Py::Exception();
try {
float root = (float)(sqrt(2.0)/2.0);
_view->getViewer()->setCameraOrientation(SbRotation(0, root, root, 0));
_view->getViewer()->setCameraOrientation(Camera::rotation(Camera::Rear));
}
catch (const Base::Exception& e) {
throw Py::RuntimeError(e.what());
@@ -412,7 +527,7 @@ Py::Object View3DInventorPy::viewRight(const Py::Tuple& args)
throw Py::Exception();
try {
_view->getViewer()->setCameraOrientation(SbRotation(0.5, 0.5, 0.5, 0.5));
_view->getViewer()->setCameraOrientation(Camera::rotation(Camera::Right));
}
catch (const Base::Exception& e) {
throw Py::RuntimeError(e.what());
@@ -433,7 +548,7 @@ Py::Object View3DInventorPy::viewTop(const Py::Tuple& args)
throw Py::Exception();
try {
_view->getViewer()->setCameraOrientation(SbRotation(0, 0, 0, 1));
_view->getViewer()->setCameraOrientation(Camera::rotation(Camera::Top));
}
catch (const Base::Exception& e) {
throw Py::RuntimeError(e.what());
@@ -448,27 +563,115 @@ Py::Object View3DInventorPy::viewTop(const Py::Tuple& args)
return Py::None();
}
Py::Object View3DInventorPy::viewAxonometric(const Py::Tuple& args)
Py::Object View3DInventorPy::viewIsometric(const Py::Tuple& args)
{
if (!PyArg_ParseTuple(args.ptr(), ""))
throw Py::Exception();
try {
//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)
//_view->getViewer()->setCameraOrientation(SbRotation
// (0.353553f, -0.146447f, -0.353553f, 0.853553f));
_view->getViewer()->setCameraOrientation(Camera::rotation(Camera::Isometric));
}
catch (const Base::Exception& e) {
throw Py::RuntimeError(e.what());
}
catch (const std::exception& e) {
throw Py::RuntimeError(e.what());
}
catch(...) {
throw Py::RuntimeError("Unknown C++ exception");
}
//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)
_view->getViewer()->setCameraOrientation(SbRotation
(0.424708f, 0.17592f, 0.339851f, 0.820473f));
return Py::None();
}
Py::Object View3DInventorPy::viewDimetric(const Py::Tuple& args)
{
if (!PyArg_ParseTuple(args.ptr(), ""))
throw Py::Exception();
try {
_view->getViewer()->setCameraOrientation(Camera::rotation(Camera::Dimetric));
}
catch (const Base::Exception& e) {
throw Py::RuntimeError(e.what());
}
catch (const std::exception& e) {
throw Py::RuntimeError(e.what());
}
catch(...) {
throw Py::RuntimeError("Unknown C++ exception");
}
return Py::None();
}
Py::Object View3DInventorPy::viewTrimetric(const Py::Tuple& args)
{
if (!PyArg_ParseTuple(args.ptr(), ""))
throw Py::Exception();
try {
_view->getViewer()->setCameraOrientation(Camera::rotation(Camera::Trimetric));
}
catch (const Base::Exception& e) {
throw Py::RuntimeError(e.what());
}
catch (const std::exception& e) {
throw Py::RuntimeError(e.what());
}
catch(...) {
throw Py::RuntimeError("Unknown C++ exception");
}
return Py::None();
}
Py::Object View3DInventorPy::viewDefaultOrientation(const Py::Tuple& args)
{
char* view = nullptr;
if (!PyArg_ParseTuple(args.ptr(), "|s", &view))
throw Py::Exception();
try {
std::string newDocView;
SbRotation rot(0,0,0,1);
if (view) {
newDocView = view;
}
else {
ParameterGrp::handle hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/View");
newDocView = hGrp->GetASCII("NewDocumentCameraOrientation", "Top");
}
if (newDocView == "Top") {
rot = Camera::rotation(Camera::Top);
}
else if (newDocView == "Bottom") {
rot = Camera::rotation(Camera::Bottom);
}
else if (newDocView == "Front") {
rot = Camera::rotation(Camera::Front);
}
else if (newDocView == "Rear") {
rot = Camera::rotation(Camera::Rear);
}
else if (newDocView == "Left") {
rot = Camera::rotation(Camera::Left);
}
else if (newDocView == "Right") {
rot = Camera::rotation(Camera::Right);
}
else if (newDocView == "Isometric") {
rot = Camera::rotation(Camera::Isometric);
}
else if (newDocView == "Dimetric") {
rot = Camera::rotation(Camera::Dimetric);
}
else if (newDocView == "Trimetric") {
rot = Camera::rotation(Camera::Trimetric);
}
_view->getViewer()->setCameraOrientation(rot);
}
catch (const Base::Exception& e) {
throw Py::RuntimeError(e.what());