/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2013, OpenCV Foundation, all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
// Authors:
// * Ozan Tonkal, ozantonkal@gmail.com
// * Anatoly Baksheev, Itseez Inc. myname.mysurname <> mycompany.com
//
//M*/
#include "precomp.hpp"
namespace cv { namespace viz
{
vtkStandardNewMacro(vtkVizInteractorStyle)
}}
//////////////////////////////////////////////////////////////////////////////////////////////
cv::viz::vtkVizInteractorStyle::vtkVizInteractorStyle()
{
FlyMode = false;
MotionFactor = 10.0;
keyboardCallback_ = 0;
keyboard_callback_cookie_ = 0;
mouseCallback_ = 0;
mouse_callback_cookie_ = 0;
// Set windows size (width, height) to unknown (-1)
win_size_ = Vec2i(-1, -1);
win_pos_ = Vec2i(0, 0);
max_win_size_ = Vec2i(-1, -1);
stereo_anaglyph_redblue_ = true;
//from fly
KeysDown = 0;
UseTimers = 1;
DiagonalLength = 1.0;
MotionStepSize = 1.0/100.0;
MotionUserScale = 1.0; // +/- key adjustment
MotionAccelerationFactor = 10.0;
AngleStepSize = 1.0;
}
cv::viz::vtkVizInteractorStyle::~vtkVizInteractorStyle() {}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::saveScreenshot(const String &file)
{
FindPokedRenderer(Interactor->GetEventPosition()[0], Interactor->GetEventPosition()[1]);
vtkSmartPointer<vtkWindowToImageFilter> wif = vtkSmartPointer<vtkWindowToImageFilter>::New();
wif->SetInput(Interactor->GetRenderWindow());
vtkSmartPointer<vtkPNGWriter> snapshot_writer = vtkSmartPointer<vtkPNGWriter>::New();
snapshot_writer->SetInputConnection(wif->GetOutputPort());
snapshot_writer->SetFileName(file.c_str());
snapshot_writer->Write();
cout << "Screenshot successfully captured (" << file.c_str() << ")" << endl;
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::exportScene(const String &file)
{
vtkSmartPointer<vtkExporter> exporter;
if (file.size() > 5 && file.substr(file.size() - 5) == ".vrml")
{
exporter = vtkSmartPointer<vtkVRMLExporter>::New();
vtkVRMLExporter::SafeDownCast(exporter)->SetFileName(file.c_str());
}
else
{
exporter = vtkSmartPointer<vtkOBJExporter>::New();
vtkOBJExporter::SafeDownCast(exporter)->SetFilePrefix(file.c_str());
}
exporter->SetInput(Interactor->GetRenderWindow());
exporter->Write();
cout << "Scene successfully exported (" << file.c_str() << ")" << endl;
}
void cv::viz::vtkVizInteractorStyle::exportScene()
{
// Export scene as in obj or vrml format
String format = Interactor->GetAltKey() ? "scene-%d.vrml" : "scene-%d";
exportScene(cv::format(format.c_str(), (unsigned int)time(0)));
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::changePointsSize(float delta)
{
vtkSmartPointer<vtkActorCollection> ac = CurrentRenderer->GetActors();
vtkCollectionSimpleIterator ait;
for (ac->InitTraversal(ait); vtkActor* actor = ac->GetNextActor(ait); )
for (actor->InitPathTraversal(); vtkAssemblyPath* path = actor->GetNextPath(); )
{
vtkActor* apart = vtkActor::SafeDownCast(path->GetLastNode()->GetViewProp());
float psize = apart->GetProperty()->GetPointSize() + delta;
psize = std::max(1.f, std::min(63.f, psize));
apart->GetProperty()->SetPointSize(psize);
}
}
void cv::viz::vtkVizInteractorStyle::setRepresentationToPoints()
{
vtkSmartPointer<vtkActorCollection> ac = CurrentRenderer->GetActors();
vtkCollectionSimpleIterator ait;
for (ac->InitTraversal(ait); vtkActor* actor = ac->GetNextActor(ait); )
for (actor->InitPathTraversal(); vtkAssemblyPath* path = actor->GetNextPath(); )
{
vtkActor* apart = vtkActor::SafeDownCast(path->GetLastNode()->GetViewProp());
apart->GetProperty()->SetRepresentationToPoints();
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::printCameraParams()
{
vtkSmartPointer<vtkCamera> cam = Interactor->GetRenderWindow()->GetRenderers()->GetFirstRenderer()->GetActiveCamera();
Vec2d clip(cam->GetClippingRange());
Vec3d focal(cam->GetFocalPoint()), pos(cam->GetPosition()), view(cam->GetViewUp());
Vec2i win_pos(Interactor->GetRenderWindow()->GetPosition());
Vec2i win_size(Interactor->GetRenderWindow()->GetSize());
double angle = cam->GetViewAngle () / 180.0 * CV_PI;
String data = cv::format("clip(%f,%f) focal(%f,%f,%f) pos(%f,%f,%f) view(%f,%f,%f) angle(%f) winsz(%d,%d) winpos(%d,%d)",
clip[0], clip[1], focal[0], focal[1], focal[2], pos[0], pos[1], pos[2], view[0], view[1], view[2],
angle, win_size[0], win_size[1], win_pos[0], win_pos[1]);
std::cout << data.c_str() << std::endl;
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::toggleFullScreen()
{
Vec2i screen_size(Interactor->GetRenderWindow()->GetScreenSize());
Vec2i win_size(Interactor->GetRenderWindow()->GetSize());
// Is window size = max?
if (win_size == max_win_size_)
{
Interactor->GetRenderWindow()->SetSize(win_size_.val);
Interactor->GetRenderWindow()->SetPosition(win_pos_.val);
Interactor->Render();
}
// Set to max
else
{
win_pos_ = Vec2i(Interactor->GetRenderWindow()->GetPosition());
win_size_ = win_size;
Interactor->GetRenderWindow()->SetSize(screen_size.val);
Interactor->Render();
max_win_size_ = Vec2i(Interactor->GetRenderWindow()->GetSize());
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::resetViewerPose()
{
WidgetActorMap::iterator it = widget_actor_map_->begin();
// it might be that some actors don't have a valid transformation set -> we skip them to avoid a seg fault.
for (; it != widget_actor_map_->end(); ++it)
{
vtkProp3D * actor = vtkProp3D::SafeDownCast(it->second);
if (actor && actor->GetUserMatrix())
break;
}
vtkSmartPointer<vtkCamera> cam = CurrentRenderer->GetActiveCamera();
// if a valid transformation was found, use it otherwise fall back to default view point.
if (it != widget_actor_map_->end())
{
vtkMatrix4x4* m = vtkProp3D::SafeDownCast(it->second)->GetUserMatrix();
cam->SetFocalPoint(m->GetElement(0, 3) - m->GetElement(0, 2),
m->GetElement(1, 3) - m->GetElement(1, 2),
m->GetElement(2, 3) - m->GetElement(2, 2));
cam->SetViewUp (m->GetElement(0, 1), m->GetElement(1, 1), m->GetElement(2, 1));
cam->SetPosition(m->GetElement(0, 3), m->GetElement(1, 3), m->GetElement(2, 3));
}
else
{
cam->SetPosition(0, 0, 0);
cam->SetFocalPoint(0, 0, 1);
cam->SetViewUp(0, -1, 0);
}
// go to the next actor for the next key-press event.
if (it != widget_actor_map_->end())
++it;
else
it = widget_actor_map_->begin();
CurrentRenderer->SetActiveCamera(cam);
CurrentRenderer->ResetCameraClippingRange();
Interactor->Render();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::toggleStereo()
{
vtkSmartPointer<vtkRenderWindow> window = Interactor->GetRenderWindow();
if (!window->GetStereoRender())
{
static Vec2i red_blue(4, 3), magenta_green(2, 5);
window->SetAnaglyphColorMask (stereo_anaglyph_redblue_ ? red_blue.val : magenta_green.val);
stereo_anaglyph_redblue_ = !stereo_anaglyph_redblue_;
}
window->SetStereoRender(!window->GetStereoRender());
Interactor->Render();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::printHelp()
{
std::cout << "| Help:\n"
"-------\n"
" p, P : switch to a point-based representation\n"
" w, W : switch to a wireframe-based representation (where available)\n"
" s, S : switch to a surface-based representation (where available)\n"
"\n"
" j, J : take a .PNG snapshot of the current window view\n"
" k, K : export scene to Wavefront .obj format\n"
" ALT + k, K : export scene to VRML format\n"
" c, C : display current camera/window parameters\n"
" F5 : enable/disable fly mode (changes control style)\n"
"\n"
" e, E : exit the interactor\n"
" q, Q : stop and call VTK's TerminateApp\n"
"\n"
" +/- : increment/decrement overall point size\n"
" +/- [+ ALT] : zoom in/out \n"
"\n"
" r, R [+ ALT] : reset camera [to viewpoint = {0, 0, 0} -> center_{x, y, z}]\n"
"\n"
" ALT + s, S : turn stereo mode on/off\n"
" ALT + f, F : switch between maximized window mode and original size\n"
"\n"
<< std::endl;
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::zoomIn()
{
FindPokedRenderer(Interactor->GetEventPosition()[0], Interactor->GetEventPosition()[1]);
// Zoom in
StartDolly();
double factor = 10.0 * 0.2 * .5;
Dolly(std::pow(1.1, factor));
EndDolly();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::zoomOut()
{
FindPokedRenderer(Interactor->GetEventPosition()[0], Interactor->GetEventPosition()[1]);
// Zoom out
StartDolly();
double factor = 10.0 * -0.2 * .5;
Dolly(std::pow(1.1, factor));
EndDolly();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnChar()
{
FindPokedRenderer(Interactor->GetEventPosition()[0], Interactor->GetEventPosition()[1]);
String key(Interactor->GetKeySym());
if (key.find("XF86ZoomIn") != String::npos)
zoomIn();
else if (key.find("XF86ZoomOut") != String::npos)
zoomOut();
switch (Interactor->GetKeyCode())
{
// // All of the options below simply exit
// case 'l': case 'L': case 'j': case 'J': case 'c': case 'C': case 'q': case 'Q':
// case 'f': case 'F': case 'g': case 'G': case 'o': case 'O': case 'u': case 'U':
case 'p': case 'P':
break;
case '+':
if (FlyMode)
MotionUserScale = std::min(16.0, MotionUserScale*2.0);
break;
case '-':
if (FlyMode)
MotionUserScale = std::max(MotionUserScale * 0.5, 0.0625);
break;
case 'r': case 'R': case 's': case 'S':
if (!Interactor->GetAltKey())
Superclass::OnChar();
break;
default:
Superclass::OnChar();
break;
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::registerMouseCallback(void (*callback)(const MouseEvent&, void*), void* cookie)
{
mouseCallback_ = callback;
mouse_callback_cookie_ = cookie;
}
void cv::viz::vtkVizInteractorStyle::registerKeyboardCallback(void (*callback)(const KeyboardEvent&, void*), void *cookie)
{
keyboardCallback_ = callback;
keyboard_callback_cookie_ = cookie;
}
//////////////////////////////////////////////////////////////////////////////////////////////
int cv::viz::vtkVizInteractorStyle::getModifiers()
{
int modifiers = KeyboardEvent::NONE;
if (Interactor->GetAltKey())
modifiers |= KeyboardEvent::ALT;
if (Interactor->GetControlKey())
modifiers |= KeyboardEvent::CTRL;
if (Interactor->GetShiftKey())
modifiers |= KeyboardEvent::SHIFT;
return modifiers;
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnKeyDown()
{
FindPokedRenderer(Interactor->GetEventPosition()[0], Interactor->GetEventPosition()[1]);
String key(Interactor->GetKeySym());
if (key.find("XF86ZoomIn") != String::npos)
zoomIn();
else if (key.find("XF86ZoomOut") != String::npos)
zoomOut();
else if (key.find("F5") != String::npos)
{
FlyMode = !FlyMode;
std::cout << (FlyMode ? "Fly mode: on" : "Fly mode: off") << std::endl;
}
// Save the initial windows width/height
if (win_size_[0] == -1 || win_size_[1] == -1)
win_size_ = Vec2i(Interactor->GetRenderWindow()->GetSize());
switch (Interactor->GetKeyCode())
{
case 'a': case 'A' : KeysDown |=16; break;
case 'z': case 'Z' : KeysDown |=32; break;
case 'h': case 'H' : printHelp(); break;
case 'p': case 'P' : setRepresentationToPoints(); break;
case 'k': case 'K' : exportScene(); break;
case 'j': case 'J' : saveScreenshot(cv::format("screenshot-%d.png", (unsigned int)time(0))); break;
case 'c': case 'C' : printCameraParams(); break;
case '=': zoomIn(); break;
case 43: // KEY_PLUS
{
if (FlyMode)
break;
if (Interactor->GetAltKey())
zoomIn();
else
changePointsSize(+1.f);
break;
}
case 45: // KEY_MINUS
{
if (FlyMode)
break;
if (Interactor->GetAltKey())
zoomOut();
else
changePointsSize(-1.f);
break;
}
// Switch between maximize and original window size
case 'f': case 'F':
{
if (Interactor->GetAltKey())
toggleFullScreen();
break;
}
// 's'/'S' w/out ALT
case 's': case 'S':
{
if (Interactor->GetAltKey())
toggleStereo();
break;
}
case 'o': case 'O':
{
vtkSmartPointer<vtkCamera> cam = CurrentRenderer->GetActiveCamera();
cam->SetParallelProjection(!cam->GetParallelProjection());
Interactor->Render();
break;
}
// Overwrite the camera reset
case 'r': case 'R':
{
if (Interactor->GetAltKey())
resetViewerPose();
break;
}
case 'q': case 'Q':
Interactor->ExitCallback(); return;
default:
Superclass::OnKeyDown(); break;
}
KeyboardEvent event(KeyboardEvent::KEY_DOWN, Interactor->GetKeySym(), Interactor->GetKeyCode(), getModifiers());
if (keyboardCallback_)
keyboardCallback_(event, keyboard_callback_cookie_);
if (FlyMode && (KeysDown & (32+16)) == (32+16))
{
if (State == VTKIS_FORWARDFLY || State == VTKIS_REVERSEFLY)
StopState();
}
else if (FlyMode && (KeysDown & 32) == 32)
{
if (State == VTKIS_FORWARDFLY)
StopState();
if (State == VTKIS_NONE)
StartState(VTKIS_REVERSEFLY);
}
else if (FlyMode && (KeysDown & 16) == 16)
{
if (State == VTKIS_REVERSEFLY)
StopState();
if (State == VTKIS_NONE)
StartState(VTKIS_FORWARDFLY);
}
Interactor->Render();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnKeyUp()
{
KeyboardEvent event(KeyboardEvent::KEY_UP, Interactor->GetKeySym(), Interactor->GetKeyCode(), getModifiers());
if (keyboardCallback_)
keyboardCallback_(event, keyboard_callback_cookie_);
switch (Interactor->GetKeyCode())
{
case 'a': case 'A' : KeysDown &= ~16; break;
case 'z': case 'Z' : KeysDown &= ~32; break;
}
if (State == VTKIS_FORWARDFLY && (KeysDown & 16) == 0)
StopState();
if (State == VTKIS_REVERSEFLY && (KeysDown & 32) == 0)
StopState();
Superclass::OnKeyUp();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnMouseMove()
{
Vec2i p(Interactor->GetEventPosition());
MouseEvent event(MouseEvent::MouseMove, MouseEvent::NoButton, p, getModifiers());
if (mouseCallback_)
mouseCallback_(event, mouse_callback_cookie_);
FindPokedRenderer(p[0], p[1]);
if (State == VTKIS_ROTATE || State == VTKIS_PAN || State == VTKIS_DOLLY || State == VTKIS_SPIN)
{
switch (State)
{
case VTKIS_ROTATE: Rotate(); break;
case VTKIS_PAN: Pan(); break;
case VTKIS_DOLLY: Dolly(); break;
case VTKIS_SPIN: Spin(); break;
}
InvokeEvent(vtkCommand::InteractionEvent, NULL);
}
if (State == VTKIS_FORWARDFLY || State == VTKIS_REVERSEFLY)
{
vtkCamera *cam = CurrentRenderer->GetActiveCamera();
Vec2i thispos(Interactor->GetEventPosition());
Vec2i lastpos(Interactor->GetLastEventPosition());
// we want to steer by an amount proportional to window viewangle and size
// compute dx and dy increments relative to last mouse click
Vec2i size(Interactor->GetSize());
double scalefactor = 5*cam->GetViewAngle()/size[0];
double dx = - (thispos[0] - lastpos[0])*scalefactor*AngleStepSize;
double dy = (thispos[1] - lastpos[1])*scalefactor*AngleStepSize;
// Temporary until I get smooth flight working
DeltaPitch = dy;
DeltaYaw = dx;
InvokeEvent(vtkCommand::InteractionEvent, NULL);
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnLeftButtonDown()
{
Vec2i p(Interactor->GetEventPosition());
MouseEvent::Type type = (Interactor->GetRepeatCount() == 0) ? MouseEvent::MouseButtonPress : MouseEvent::MouseDblClick;
MouseEvent event(type, MouseEvent::LeftButton, p, getModifiers());
if (mouseCallback_)
mouseCallback_(event, mouse_callback_cookie_);
FindPokedRenderer(p[0], p[1]);
if (!CurrentRenderer)
return;
GrabFocus(EventCallbackCommand);
if (FlyMode)
{
if(State == VTKIS_REVERSEFLY)
State = VTKIS_FORWARDFLY;
else
{
SetupMotionVars();
if (State == VTKIS_NONE)
StartState(VTKIS_FORWARDFLY);
}
}
else
{
if (Interactor->GetShiftKey())
{
if (Interactor->GetControlKey())
StartDolly();
else
StartPan();
}
else
{
if (Interactor->GetControlKey())
StartSpin();
else
StartRotate();
}
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnLeftButtonUp()
{
Vec2i p(Interactor->GetEventPosition());
MouseEvent event(MouseEvent::MouseButtonRelease, MouseEvent::LeftButton, p, getModifiers());
if (mouseCallback_)
mouseCallback_(event, mouse_callback_cookie_);
switch (State)
{
case VTKIS_DOLLY: EndDolly(); break;
case VTKIS_PAN: EndPan(); break;
case VTKIS_SPIN: EndSpin(); break;
case VTKIS_ROTATE: EndRotate(); break;
case VTKIS_FORWARDFLY: StopState(); break;
}
if (Interactor )
ReleaseFocus();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnMiddleButtonDown()
{
Vec2i p(Interactor->GetEventPosition());
MouseEvent::Type type = (Interactor->GetRepeatCount() == 0) ? MouseEvent::MouseButtonPress : MouseEvent::MouseDblClick;
MouseEvent event(type, MouseEvent::MiddleButton, p, getModifiers());
if (mouseCallback_)
mouseCallback_(event, mouse_callback_cookie_);
FindPokedRenderer(p[0], p[1]);
if (!CurrentRenderer)
return;
GrabFocus(EventCallbackCommand);
StartPan();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnMiddleButtonUp()
{
Vec2i p(Interactor->GetEventPosition());
MouseEvent event(MouseEvent::MouseButtonRelease, MouseEvent::MiddleButton, p, getModifiers());
if (mouseCallback_)
mouseCallback_(event, mouse_callback_cookie_);
if (State == VTKIS_PAN)
{
EndPan();
if (Interactor)
ReleaseFocus();
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnRightButtonDown()
{
Vec2i p(Interactor->GetEventPosition());
MouseEvent::Type type = (Interactor->GetRepeatCount() == 0) ? MouseEvent::MouseButtonPress : MouseEvent::MouseDblClick;
MouseEvent event(type, MouseEvent::RightButton, p, getModifiers());
if (mouseCallback_)
mouseCallback_(event, mouse_callback_cookie_);
FindPokedRenderer(p[0], p[1]);
if (!CurrentRenderer)
return;
GrabFocus(EventCallbackCommand);
if (FlyMode)
{
if (State == VTKIS_FORWARDFLY)
State = VTKIS_REVERSEFLY;
else
{
SetupMotionVars();
if (State == VTKIS_NONE)
StartState(VTKIS_REVERSEFLY);
}
}
else
StartDolly();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnRightButtonUp()
{
Vec2i p(Interactor->GetEventPosition());
MouseEvent event(MouseEvent::MouseButtonRelease, MouseEvent::RightButton, p, getModifiers());
if (mouseCallback_)
mouseCallback_(event, mouse_callback_cookie_);
if(State == VTKIS_DOLLY)
{
EndDolly();
if (Interactor)
ReleaseFocus();
}
if (State == VTKIS_REVERSEFLY)
{
StopState();
if (Interactor)
ReleaseFocus();
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnMouseWheelForward()
{
Vec2i p(Interactor->GetEventPosition());
MouseEvent event(MouseEvent::MouseScrollUp, MouseEvent::VScroll, p, getModifiers());
if (mouseCallback_)
mouseCallback_(event, mouse_callback_cookie_);
if (Interactor->GetRepeatCount() && mouseCallback_)
mouseCallback_(event, mouse_callback_cookie_);
if (Interactor->GetAltKey())
{
// zoom
vtkSmartPointer<vtkCamera> cam = CurrentRenderer->GetActiveCamera();
double opening_angle = cam->GetViewAngle();
if (opening_angle > 15.0)
opening_angle -= 1.0;
cam->SetViewAngle(opening_angle);
cam->Modified();
CurrentRenderer->ResetCameraClippingRange();
CurrentRenderer->Modified();
Interactor->Render();
}
else
{
FindPokedRenderer(p[0], p[1]);
if (!CurrentRenderer)
return;
GrabFocus(EventCallbackCommand);
StartDolly();
Dolly(pow(1.1, MotionFactor * 0.2 * MouseWheelMotionFactor));
EndDolly();
ReleaseFocus();
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnMouseWheelBackward()
{
Vec2i p(Interactor->GetEventPosition());
MouseEvent event(MouseEvent::MouseScrollDown, MouseEvent::VScroll, p, getModifiers());
if (mouseCallback_)
mouseCallback_(event, mouse_callback_cookie_);
if (Interactor->GetRepeatCount() && mouseCallback_)
mouseCallback_(event, mouse_callback_cookie_);
if (Interactor->GetAltKey())
{
// zoom
vtkSmartPointer<vtkCamera> cam = CurrentRenderer->GetActiveCamera();
double opening_angle = cam->GetViewAngle();
if (opening_angle < 170.0)
opening_angle += 1.0;
cam->SetViewAngle(opening_angle);
cam->Modified();
CurrentRenderer->ResetCameraClippingRange();
CurrentRenderer->Modified();
Interactor->Render();
}
else
{
FindPokedRenderer(p[0], p[1]);
if (!CurrentRenderer)
return;
GrabFocus(EventCallbackCommand);
StartDolly();
Dolly(pow(1.1, MotionFactor * -0.2 * MouseWheelMotionFactor));
EndDolly();
ReleaseFocus();
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::OnTimer()
{
if (State == VTKIS_FORWARDFLY || State == VTKIS_REVERSEFLY)
Fly();
Interactor->Render();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::Rotate()
{
if (!CurrentRenderer)
return;
Vec2i dxy = Vec2i(Interactor->GetEventPosition()) - Vec2i(Interactor->GetLastEventPosition());
Vec2i size(CurrentRenderer->GetRenderWindow()->GetSize());
double delta_elevation = -20.0 / size[1];
double delta_azimuth = -20.0 / size[0];
double rxf = dxy[0] * delta_azimuth * MotionFactor;
double ryf = dxy[1] * delta_elevation * MotionFactor;
vtkCamera *camera = CurrentRenderer->GetActiveCamera();
camera->Azimuth(rxf);
camera->Elevation(ryf);
camera->OrthogonalizeViewUp();
if (AutoAdjustCameraClippingRange)
CurrentRenderer->ResetCameraClippingRange();
if (Interactor->GetLightFollowCamera())
CurrentRenderer->UpdateLightsGeometryToFollowCamera();
Interactor->Render();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::Spin()
{
if (!CurrentRenderer)
return;
vtkRenderWindowInteractor *rwi = Interactor;
double *center = CurrentRenderer->GetCenter();
double newAngle = vtkMath::DegreesFromRadians( atan2( rwi->GetEventPosition()[1] - center[1], rwi->GetEventPosition()[0] - center[0] ) );
double oldAngle = vtkMath::DegreesFromRadians( atan2( rwi->GetLastEventPosition()[1] - center[1], rwi->GetLastEventPosition()[0] - center[0] ) );
vtkCamera *camera = CurrentRenderer->GetActiveCamera();
camera->Roll( newAngle - oldAngle );
camera->OrthogonalizeViewUp();
rwi->Render();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::Pan()
{
if (!CurrentRenderer)
return;
vtkRenderWindowInteractor *rwi = Interactor;
double viewFocus[4], focalDepth, viewPoint[3];
double newPickPoint[4], oldPickPoint[4], motionVector[3];
// Calculate the focal depth since we'll be using it a lot
vtkCamera *camera = CurrentRenderer->GetActiveCamera();
camera->GetFocalPoint(viewFocus);
ComputeWorldToDisplay(viewFocus[0], viewFocus[1], viewFocus[2], viewFocus);
focalDepth = viewFocus[2];
ComputeDisplayToWorld(rwi->GetEventPosition()[0], rwi->GetEventPosition()[1], focalDepth, newPickPoint);
// Has to recalc old mouse point since the viewport has moved, so can't move it outside the loop
ComputeDisplayToWorld(rwi->GetLastEventPosition()[0], rwi->GetLastEventPosition()[1], focalDepth, oldPickPoint);
// Camera motion is reversed
motionVector[0] = oldPickPoint[0] - newPickPoint[0];
motionVector[1] = oldPickPoint[1] - newPickPoint[1];
motionVector[2] = oldPickPoint[2] - newPickPoint[2];
camera->GetFocalPoint(viewFocus);
camera->GetPosition(viewPoint);
camera->SetFocalPoint(motionVector[0] + viewFocus[0], motionVector[1] + viewFocus[1], motionVector[2] + viewFocus[2]);
camera->SetPosition( motionVector[0] + viewPoint[0], motionVector[1] + viewPoint[1], motionVector[2] + viewPoint[2]);
if (Interactor->GetLightFollowCamera())
CurrentRenderer->UpdateLightsGeometryToFollowCamera();
Interactor->Render();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::Dolly()
{
if (!CurrentRenderer)
return;
int dy = Interactor->GetEventPosition()[1] - Interactor->GetLastEventPosition()[1];
Dolly(pow(1.1, MotionFactor * dy / CurrentRenderer->GetCenter()[1]));
}
void cv::viz::vtkVizInteractorStyle::Dolly(double factor)
{
if (!CurrentRenderer)
return;
vtkCamera *camera = CurrentRenderer->GetActiveCamera();
if (camera->GetParallelProjection())
camera->SetParallelScale(camera->GetParallelScale() / factor);
else
{
camera->Dolly(factor);
if (AutoAdjustCameraClippingRange)
CurrentRenderer->ResetCameraClippingRange();
}
if (Interactor->GetLightFollowCamera())
CurrentRenderer->UpdateLightsGeometryToFollowCamera();
Interactor->Render();
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::Fly()
{
if (CurrentRenderer == NULL)
return;
if (KeysDown)
FlyByKey();
else
FlyByMouse();
CurrentRenderer->GetActiveCamera()->OrthogonalizeViewUp();
if (AutoAdjustCameraClippingRange)
CurrentRenderer->ResetCameraClippingRange();
if (Interactor->GetLightFollowCamera())
CurrentRenderer->UpdateLightsGeometryToFollowCamera();
}
void cv::viz::vtkVizInteractorStyle::SetupMotionVars()
{
Vec6d bounds;
CurrentRenderer->ComputeVisiblePropBounds(bounds.val);
if ( !vtkMath::AreBoundsInitialized(bounds.val) )
DiagonalLength = 1.0;
else
DiagonalLength = norm(Vec3d(bounds[0], bounds[2], bounds[4]) - Vec3d(bounds[1], bounds[3], bounds[5]));
}
void cv::viz::vtkVizInteractorStyle::MotionAlongVector(const Vec3d& vector, double amount, vtkCamera* cam)
{
// move camera and focus along DirectionOfProjection
Vec3d campos = Vec3d(cam->GetPosition()) - amount * vector;
Vec3d camfoc = Vec3d(cam->GetFocalPoint()) - amount * vector;
cam->SetPosition(campos.val);
cam->SetFocalPoint(camfoc.val);
}
void cv::viz::vtkVizInteractorStyle::FlyByMouse()
{
vtkCamera* cam = CurrentRenderer->GetActiveCamera();
double speed = DiagonalLength * MotionStepSize * MotionUserScale;
speed = speed * ( Interactor->GetShiftKey() ? MotionAccelerationFactor : 1.0);
// Sidestep
if (Interactor->GetAltKey())
{
if (DeltaYaw!=0.0)
{
vtkMatrix4x4 *vtm = cam->GetViewTransformMatrix();
Vec3d a_vector(vtm->GetElement(0,0), vtm->GetElement(0,1), vtm->GetElement(0,2));
MotionAlongVector(a_vector, -DeltaYaw*speed, cam);
}
if (DeltaPitch!=0.0)
{
Vec3d a_vector(cam->GetViewUp());
MotionAlongVector(a_vector, DeltaPitch*speed, cam);
}
}
else
{
cam->Yaw(DeltaYaw);
cam->Pitch(DeltaPitch);
DeltaYaw = 0;
DeltaPitch = 0;
}
//
if (!Interactor->GetControlKey())
{
Vec3d a_vector(cam->GetDirectionOfProjection()); // reversed (use -speed)
switch (State)
{
case VTKIS_FORWARDFLY: MotionAlongVector(a_vector, -speed, cam); break;
case VTKIS_REVERSEFLY: MotionAlongVector(a_vector, speed, cam); break;
}
}
}
void cv::viz::vtkVizInteractorStyle::FlyByKey()
{
vtkCamera* cam = CurrentRenderer->GetActiveCamera();
double speed = DiagonalLength * MotionStepSize * MotionUserScale;
speed = speed * ( Interactor->GetShiftKey() ? MotionAccelerationFactor : 1.0);
// Left and right
if (Interactor->GetAltKey())
{ // Sidestep
vtkMatrix4x4 *vtm = cam->GetViewTransformMatrix();
Vec3d a_vector(vtm->GetElement(0,0), vtm->GetElement(0,1), vtm->GetElement(0,2));
if (KeysDown & 1)
MotionAlongVector(a_vector, -speed, cam);
if (KeysDown & 2)
MotionAlongVector(a_vector, speed, cam);
}
else
{
if (KeysDown & 1)
cam->Yaw( AngleStepSize);
if (KeysDown & 2)
cam->Yaw(-AngleStepSize);
}
// Up and Down
if (Interactor->GetControlKey())
{ // Sidestep
Vec3d a_vector = Vec3d(cam->GetViewUp());
if (KeysDown & 4)
MotionAlongVector(a_vector,-speed, cam);
if (KeysDown & 8)
MotionAlongVector(a_vector, speed, cam);
}
else
{
if (KeysDown & 4)
cam->Pitch(-AngleStepSize);
if (KeysDown & 8)
cam->Pitch( AngleStepSize);
}
// forward and backward
Vec3d a_vector(cam->GetDirectionOfProjection());
if (KeysDown & 16)
MotionAlongVector(a_vector, speed, cam);
if (KeysDown & 32)
MotionAlongVector(a_vector,-speed, cam);
}
//////////////////////////////////////////////////////////////////////////////////////////////
void cv::viz::vtkVizInteractorStyle::PrintSelf(ostream& os, vtkIndent indent)
{
Superclass::PrintSelf(os, indent);
os << indent << "MotionFactor: " << MotionFactor << "\n";
os << indent << "MotionStepSize: " << MotionStepSize << "\n";
os << indent << "MotionAccelerationFactor: "<< MotionAccelerationFactor << "\n";
os << indent << "AngleStepSize: " << AngleStepSize << "\n";
os << indent << "MotionUserScale: "<< MotionUserScale << "\n";
}