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Allow saving/restoring camera state to/from file #134

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Allow saving/restoring camera state to/from file #134

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78 changes: 78 additions & 0 deletions GUI/Qt/Components/ViewPanel3D.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
#include "ui_ViewPanel3D.h"
#include "GlobalUIModel.h"
#include "Generic3DModel.h"
#include "Generic3DRenderer.h"
#include "itkCommand.h"
#include "IRISException.h"
#include "IRISApplication.h"
Expand Down Expand Up @@ -50,6 +51,9 @@ ViewPanel3D::ViewPanel3D(QWidget *parent) :
m_DropMenu->addAction(ui->actionSave_Viewpoint);
m_DropMenu->addAction(ui->actionRestore_Viewpoint);
m_DropMenu->addSeparator();
m_DropMenu->addAction(ui->actionImport_Viewpoint);
m_DropMenu->addAction(ui->actionExport_Viewpoint);
m_DropMenu->addSeparator();
m_DropMenu->addAction(ui->actionContinuous_Update);
ui->actionContinuous_Update->setObjectName("actionContinuousUpdate");
m_DropMenu->addSeparator();
Expand Down Expand Up @@ -301,6 +305,80 @@ void ViewPanel3D::on_actionRestore_Viewpoint_triggered()
m_Model->RestoreCameraState();
}

void ViewPanel3D::LoadCameraViewpoint(QString file)
{
try
{
std::string utf = to_utf8(file);
CameraState cam = {};
std::ifstream input(utf);
input >> cam.position;
input >> cam.focal_point;
input >> cam.view_up;
input >> cam.view_angle;
input >> cam.parallel_projection;
input >> cam.parallel_scale;
input >> cam.clipping_range;
m_Model->GetRenderer()->SetCameraState(cam);
}
catch(std::exception &exc)
{
ReportNonLethalException(this, exc, "Camera Viewpoint IO Error",
QString("Failed to load camera viewpoint from file"));
}
}

void ViewPanel3D::SaveCameraViewpoint(QString file)
{
try
{
std::string utf = to_utf8(file);
CameraState cam = m_Model->GetRenderer()->GetCameraState();
std::ofstream output(utf);
output << cam.position << std::endl;
output << cam.focal_point << std::endl;
output << cam.view_up << std::endl;
output << cam.view_angle << std::endl;
output << cam.parallel_projection << std::endl;
output << cam.parallel_scale << std::endl;
output << cam.clipping_range << std::endl;
}
catch(std::exception &exc)
{
ReportNonLethalException(this, exc, "Camera Viewpoint IO Error",
QString("Failed to save camera viewpoint to file"));
}
}

void ViewPanel3D::on_actionImport_Viewpoint_triggered()
{
// Ask for a filename
QString selection = ShowSimpleOpenDialogWithHistory(
this, m_Model->GetParentUI(), "CameraViewpoint",
"Load Camera Viewpoint - ITK-SNAP",
"Camera Viewpoint File",
"Camera Files (*.vtkcam)");

// Open the labels from the selection
if(selection.length())
LoadCameraViewpoint(selection);
}

void ViewPanel3D::on_actionExport_Viewpoint_triggered()
{
// Ask for a filename
QString selection = ShowSimpleSaveDialogWithHistory(
this, m_Model->GetParentUI(), "CameraViewpoint",
"Save Camera Viewpoint - ITK-SNAP",
"Camera Viewpoint File",
"Camera Files (*.vtkcam)",
true);

// Open the labels from the selection
if(selection.length())
SaveCameraViewpoint(selection);
}

void ViewPanel3D::on_actionContinuous_Update_triggered()
{
ui->btnUpdateMesh->setVisible(!ui->actionContinuous_Update->isChecked());
Expand Down
10 changes: 10 additions & 0 deletions GUI/Qt/Components/ViewPanel3D.h
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Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,10 @@ private slots:

void on_actionRestore_Viewpoint_triggered();

void on_actionImport_Viewpoint_triggered();

void on_actionExport_Viewpoint_triggered();

void on_actionContinuous_Update_triggered();

void on_btnMenu_pressed();
Expand Down Expand Up @@ -105,6 +109,12 @@ private slots:

void UpdateActionButtons();

// Load camera viewpoint
void LoadCameraViewpoint(QString file);

// Save camera viewpoint
void SaveCameraViewpoint(QString file);

// Apply color bar visibility based on the active mesh layer type
void ApplyDefaultColorBarVisibility();

Expand Down
16 changes: 16 additions & 0 deletions GUI/Qt/Components/ViewPanel3D.ui
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Original file line number Diff line number Diff line change
Expand Up @@ -325,6 +325,22 @@ font-size: 11px;
<string>Ctrl+K, R</string>
</property>
</action>
<action name="actionImport_Viewpoint">
<property name="text">
<string>Import Viewpoint</string>
</property>
<property name="shortcut">
<string>Ctrl+K, I</string>
</property>
</action>
<action name="actionExport_Viewpoint">
<property name="text">
<string>Export Viewpoint</string>
</property>
<property name="shortcut">
<string>Ctrl+K, E</string>
</property>
</action>
<action name="actionContinuous_Update">
<property name="checkable">
<bool>true</bool>
Expand Down