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Open Source Computer Vision Library https://opencv.org/
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opencv/modules/viz/src/viz3d_impl.hpp

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#pragma once
#include <opencv2/viz.hpp>
#include "interactor_style.h"
#include "viz_types.h"
#include "common.h"
struct cv::viz::Viz3d::VizImpl
{
public:
typedef cv::Ptr<VizImpl> Ptr;
typedef Viz3d::KeyboardCallback KeyboardCallback;
typedef Viz3d::MouseCallback MouseCallback;
int ref_counter;
VizImpl (const String &name);
virtual ~VizImpl ();
//to refactor
bool removePointCloud (const String& id = "cloud");
inline bool removePolygonMesh (const String& id = "polygon") { return removePointCloud (id); }
bool removeShape (const String& id = "cloud");
bool removeText3D (const String& id = "cloud");
bool removeAllPointClouds ();
//create Viz3d::removeAllWidgets()
bool removeAllShapes ();
//to refactor
bool addPolygonMesh (const Mesh3d& mesh, const cv::Mat& mask, const String& id = "polygon");
bool updatePolygonMesh (const Mesh3d& mesh, const cv::Mat& mask, const String& id = "polygon");
bool addPolylineFromPolygonMesh (const Mesh3d& mesh, const String& id = "polyline");
// to refactor: Widget3D:: & Viz3d::
bool setPointCloudRenderingProperties (int property, double value, const String& id = "cloud");
bool getPointCloudRenderingProperties (int property, double &value, const String& id = "cloud");
bool setShapeRenderingProperties (int property, double value, const String& id);
/** \brief Set whether the point cloud is selected or not
* \param[in] selected whether the cloud is selected or not (true = selected)
* \param[in] id the point cloud object id (default: cloud)
*/
// probably should just remove
bool setPointCloudSelected (const bool selected, const String& id = "cloud" );
/** \brief Returns true when the user tried to close the window */
bool wasStopped () const { if (interactor_ != NULL) return (stopped_); else return true; }
/** \brief Set the stopped flag back to false */
void resetStoppedFlag () { if (interactor_ != NULL) stopped_ = false; }
/** \brief Stop the interaction and close the visualizaton window. */
void close ()
{
stopped_ = true;
interactor_->TerminateApp (); // This tends to close the window...
}
// to refactor
bool addPolygon(const cv::Mat& cloud, const Color& color, const String& id = "polygon");
bool addArrow (const Point3f& pt1, const Point3f& pt2, const Color& color, bool display_length, const String& id = "arrow");
bool addArrow (const Point3f& pt1, const Point3f& pt2, const Color& color_line, const Color& color_text, const String& id = "arrow");
// Probably remove this
bool addModelFromPolyData (vtkSmartPointer<vtkPolyData> polydata, const String& id = "PolyData");
bool addModelFromPolyData (vtkSmartPointer<vtkPolyData> polydata, vtkSmartPointer<vtkTransform> transform, const String& id = "PolyData");
// I think this should be moved to 'static Widget Widget::fromPlyFile(const String&)';
bool addModelFromPLYFile (const String &filename, const String& id = "PLYModel");
bool addModelFromPLYFile (const String &filename, vtkSmartPointer<vtkTransform> transform, const String& id = "PLYModel");
// to implement in Viz3d with shorter name
void setRepresentationToSurfaceForAllActors();
void setRepresentationToPointsForAllActors();
void setRepresentationToWireframeForAllActors();
// ////////////////////////////////////////////////////////////////////////////////////
// All camera methods to refactor into set/getViewwerPose, setCamera()
// and 'Camera' class itself with various constructors/fields
void setCamera(const Camera &camera);
Camera getCamera() const;
void initCameraParameters (); /** \brief Initialize camera parameters with some default values. */
bool cameraParamsSet () const; /** \brief Checks whether the camera parameters were manually loaded from file.*/
void updateCamera (); /** \brief Update camera parameters and render. */
void resetCamera (); /** \brief Reset camera parameters and render. */
/** \brief Reset the camera direction from {0, 0, 0} to the center_{x, y, z} of a given dataset.
* \param[in] id the point cloud object id (default: cloud) */
void resetCameraViewpoint (const String& id = "cloud");
//to implement Viz3d set/getViewerPose()
void setViewerPose(const Affine3f &pose);
Affine3f getViewerPose();
void convertToWindowCoordinates(const Point3d &pt, Point3d &window_coord);
void converTo3DRay(const Point3d &window_coord, Point3d &origin, Vec3d &direction);
//to implemnt in Viz3d
void saveScreenshot (const String &file);
void setWindowPosition (int x, int y);
Size getWindowSize() const;
void setWindowSize (int xw, int yw);
void setFullScreen (bool mode);
void setWindowName (const String &name);
String getWindowName() const;
void setBackgroundColor (const Color& color);
void spin ();
void spinOnce (int time = 1, bool force_redraw = false);
void registerKeyboardCallback(KeyboardCallback callback, void* cookie = 0);
void registerMouseCallback(MouseCallback callback, void* cookie = 0);
//declare above (to move to up)
void showWidget(const String &id, const Widget &widget, const Affine3f &pose = Affine3f::Identity());
void removeWidget(const String &id);
Widget getWidget(const String &id) const;
void setWidgetPose(const String &id, const Affine3f &pose);
void updateWidgetPose(const String &id, const Affine3f &pose);
Affine3f getWidgetPose(const String &id) const;
private:
vtkSmartPointer<vtkRenderWindowInteractor> interactor_;
struct ExitMainLoopTimerCallback : public vtkCommand
{
static ExitMainLoopTimerCallback* New()
{
return new ExitMainLoopTimerCallback;
}
virtual void Execute(vtkObject* vtkNotUsed(caller), unsigned long event_id, void* call_data)
{
if (event_id != vtkCommand::TimerEvent)
return;
int timer_id = *reinterpret_cast<int*> (call_data);
if (timer_id != right_timer_id)
return;
// Stop vtk loop and send notification to app to wake it up
viz_->interactor_->TerminateApp ();
}
int right_timer_id;
VizImpl* viz_;
};
struct ExitCallback : public vtkCommand
{
static ExitCallback* New ()
{
return new ExitCallback;
}
virtual void Execute (vtkObject*, unsigned long event_id, void*)
{
if (event_id == vtkCommand::ExitEvent)
{
viz_->stopped_ = true;
viz_->interactor_->TerminateApp ();
}
}
VizImpl* viz_;
};
/** \brief Set to false if the interaction loop is running. */
bool stopped_;
double s_lastDone_;
/** \brief Global timer ID. Used in destructor only. */
int timer_id_;
/** \brief Callback object enabling us to leave the main loop, when a timer fires. */
vtkSmartPointer<ExitMainLoopTimerCallback> exit_main_loop_timer_callback_;
vtkSmartPointer<ExitCallback> exit_callback_;
vtkSmartPointer<vtkRenderer> renderer_;
vtkSmartPointer<vtkRenderWindow> window_;
/** \brief The render window interactor style. */
vtkSmartPointer<InteractorStyle> style_;
/** \brief Internal list with actor pointers and name IDs for point clouds. */
cv::Ptr<CloudActorMap> cloud_actor_map_;
/** \brief Internal list with actor pointers and name IDs for shapes. */
cv::Ptr<ShapeActorMap> shape_actor_map_;
/** \brief Internal list with actor pointers and name IDs for all widget actors */
cv::Ptr<WidgetActorMap> widget_actor_map_;
/** \brief Boolean that holds whether or not the camera parameters were manually initialized*/
bool camera_set_;
bool removeActorFromRenderer (const vtkSmartPointer<vtkLODActor> &actor);
bool removeActorFromRenderer (const vtkSmartPointer<vtkActor> &actor);
bool removeActorFromRenderer (const vtkSmartPointer<vtkProp> &actor);
//void addActorToRenderer (const vtkSmartPointer<vtkProp> &actor);
/** \brief Internal method. Creates a vtk actor from a vtk polydata object.
* \param[in] data the vtk polydata object to create an actor for
* \param[out] actor the resultant vtk actor object
* \param[in] use_scalars set scalar properties to the mapper if it exists in the data. Default: true.
*/
void createActorFromVTKDataSet (const vtkSmartPointer<vtkDataSet> &data, vtkSmartPointer<vtkLODActor> &actor, bool use_scalars = true);
/** \brief Updates a set of cells (vtkIdTypeArray) if the number of points in a cloud changes
* \param[out] cells the vtkIdTypeArray object (set of cells) to update
* \param[out] initcells a previously saved set of cells. If the number of points in the current cloud is
* higher than the number of cells in \a cells, and initcells contains enough data, then a copy from it
* will be made instead of regenerating the entire array.
* \param[in] nr_points the number of points in the new cloud. This dictates how many cells we need to
* generate
*/
void updateCells (vtkSmartPointer<vtkIdTypeArray> &cells, vtkSmartPointer<vtkIdTypeArray> &initcells, vtkIdType nr_points);
void allocVtkPolyData (vtkSmartPointer<vtkAppendPolyData> &polydata);
void allocVtkPolyData (vtkSmartPointer<vtkPolyData> &polydata);
void allocVtkUnstructuredGrid (vtkSmartPointer<vtkUnstructuredGrid> &polydata);
};
namespace cv
{
namespace viz
{
//void getTransformationMatrix (const Eigen::Vector4f &origin, const Eigen::Quaternionf& orientation, Eigen::Matrix4f &transformation);
vtkSmartPointer<vtkMatrix4x4> convertToVtkMatrix (const cv::Matx44f &m);
cv::Matx44f convertToMatx(const vtkSmartPointer<vtkMatrix4x4>& vtk_matrix);
/** \brief Convert origin and orientation to vtkMatrix4x4
* \param[in] origin the point cloud origin
* \param[in] orientation the point cloud orientation
* \param[out] vtk_matrix the resultant VTK 4x4 matrix
*/
void convertToVtkMatrix (const Eigen::Vector4f &origin, const Eigen::Quaternion<float> &orientation, vtkSmartPointer<vtkMatrix4x4> &vtk_matrix);
struct NanFilter
{
template<typename _Tp, typename _Msk>
struct Impl
{
typedef Vec<_Tp, 3> _Out;
static _Out* copy(const Mat& source, _Out* output, const Mat& nan_mask)
{
CV_Assert(DataDepth<_Tp>::value == source.depth() && source.size() == nan_mask.size());
CV_Assert(nan_mask.channels() == 3 || nan_mask.channels() == 4);
CV_DbgAssert(DataDepth<_Msk>::value == nan_mask.depth());
int s_chs = source.channels();
int m_chs = nan_mask.channels();
for(int y = 0; y < source.rows; ++y)
{
const _Tp* srow = source.ptr<_Tp>(y);
const _Msk* mrow = nan_mask.ptr<_Msk>(y);
for(int x = 0; x < source.cols; ++x, srow += s_chs, mrow += m_chs)
if (!isNan(mrow[0]) && !isNan(mrow[1]) && !isNan(mrow[2]))
*output++ = _Out(srow);
}
return output;
}
static _Out* copyColor(const Mat& source, _Out* output, const Mat& nan_mask)
{
CV_Assert(DataDepth<_Tp>::value == source.depth() && source.size() == nan_mask.size());
CV_Assert(nan_mask.channels() == 3 || nan_mask.channels() == 4);
CV_DbgAssert(DataDepth<_Msk>::value == nan_mask.depth());
int s_chs = source.channels();
int m_chs = nan_mask.channels();
for(int y = 0; y < source.rows; ++y)
{
const _Tp* srow = source.ptr<_Tp>(y);
const _Msk* mrow = nan_mask.ptr<_Msk>(y);
for(int x = 0; x < source.cols; ++x, srow += s_chs, mrow += m_chs)
if (!isNan(mrow[0]) && !isNan(mrow[1]) && !isNan(mrow[2]))
{
*output = _Out(srow);
std::swap((*output)[0], (*output)[2]); // BGR -> RGB
++output;
}
}
return output;
}
};
template<typename _Tp>
static inline Vec<_Tp, 3>* copy(const Mat& source, Vec<_Tp, 3>* output, const Mat& nan_mask)
{
CV_Assert(nan_mask.depth() == CV_32F || nan_mask.depth() == CV_64F);
typedef Vec<_Tp, 3>* (*copy_func)(const Mat&, Vec<_Tp, 3>*, const Mat&);
const static copy_func table[2] = { &NanFilter::Impl<_Tp, float>::copy, &NanFilter::Impl<_Tp, double>::copy };
return table[nan_mask.depth() - 5](source, output, nan_mask);
}
template<typename _Tp>
static inline Vec<_Tp, 3>* copyColor(const Mat& source, Vec<_Tp, 3>* output, const Mat& nan_mask)
{
CV_Assert(nan_mask.depth() == CV_32F || nan_mask.depth() == CV_64F);
typedef Vec<_Tp, 3>* (*copy_func)(const Mat&, Vec<_Tp, 3>*, const Mat&);
const static copy_func table[2] = { &NanFilter::Impl<_Tp, float>::copyColor, &NanFilter::Impl<_Tp, double>::copyColor };
return table[nan_mask.depth() - 5](source, output, nan_mask);
}
};
struct ApplyAffine
{
const Affine3f& affine_;
ApplyAffine(const Affine3f& affine) : affine_(affine) {}
template<typename _Tp> Point3_<_Tp> operator()(const Point3_<_Tp>& p) const { return affine_ * p; }
template<typename _Tp> Vec<_Tp, 3> operator()(const Vec<_Tp, 3>& v) const
{
const float* m = affine_.matrix.val;
Vec<_Tp, 3> result;
result[0] = (_Tp)(m[0] * v[0] + m[1] * v[1] + m[ 2] * v[2] + m[ 3]);
result[1] = (_Tp)(m[4] * v[0] + m[5] * v[1] + m[ 6] * v[2] + m[ 7]);
result[2] = (_Tp)(m[8] * v[0] + m[9] * v[1] + m[10] * v[2] + m[11]);
return result;
}
private:
ApplyAffine(const ApplyAffine&);
ApplyAffine& operator=(const ApplyAffine&);
};
inline Color vtkcolor(const Color& color)
{
Color scaled_color = color * (1.0/255.0);
std::swap(scaled_color[0], scaled_color[2]);
return scaled_color;
}
inline Vec3d vtkpoint(const Point3f& point) { return Vec3d(point.x, point.y, point.z); }
template<typename _Tp> inline _Tp normalized(const _Tp& v) { return v * 1/cv::norm(v); }
struct ConvertToVtkImage
{
struct Impl
{
static void copyImageMultiChannel(const Mat &image, vtkSmartPointer<vtkImageData> output)
{
int i_chs = image.channels();
for (int i = 0; i < image.rows; ++i)
{
const unsigned char * irows = image.ptr<unsigned char>(i);
for (int j = 0; j < image.cols; ++j, irows += i_chs)
{
unsigned char * vrows = static_cast<unsigned char *>(output->GetScalarPointer(j,i,0));
memcpy(vrows, irows, i_chs);
std::swap(vrows[0], vrows[2]); // BGR -> RGB
}
}
output->Modified();
}
static void copyImageSingleChannel(const Mat &image, vtkSmartPointer<vtkImageData> output)
{
for (int i = 0; i < image.rows; ++i)
{
const unsigned char * irows = image.ptr<unsigned char>(i);
for (int j = 0; j < image.cols; ++j, ++irows)
{
unsigned char * vrows = static_cast<unsigned char *>(output->GetScalarPointer(j,i,0));
*vrows = *irows;
}
}
output->Modified();
}
};
static void convert(const Mat &image, vtkSmartPointer<vtkImageData> output)
{
// Create the vtk image
output->SetDimensions(image.cols, image.rows, 1);
output->SetNumberOfScalarComponents(image.channels());
output->SetScalarTypeToUnsignedChar();
output->AllocateScalars();
int i_chs = image.channels();
if (i_chs > 1)
{
// Multi channel images are handled differently because of BGR <-> RGB
Impl::copyImageMultiChannel(image, output);
}
else
{
Impl::copyImageSingleChannel(image, output);
}
}
};
}
}