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CameraPositionWidget: constructor with Vec2f fov (tentative)

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This commit is contained in:
ozantonkal 2013-07-19 18:30:12 +02:00
parent 2294eb82c9
commit 0a3691d6ac
2 changed files with 40 additions and 1 deletions
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1
modules/viz/include/opencv2/viz/widgets.hpp
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@ -170,6 +170,7 @@ namespace cv
CameraPositionWidget(double scale = 1.0); CameraPositionWidget(double scale = 1.0);
CameraPositionWidget(const Vec3f &position, const Vec3f &look_at, const Vec3f &up_vector, double scale = 1.0); CameraPositionWidget(const Vec3f &position, const Vec3f &look_at, const Vec3f &up_vector, double scale = 1.0);
CameraPositionWidget(const Matx33f &K, double scale = 1.0, const Color &color = Color::white()); CameraPositionWidget(const Matx33f &K, double scale = 1.0, const Color &color = Color::white());
CameraPositionWidget(const Vec2f &fov, double scale = 1.0, const Color &color = Color::white());
}; };
class CV_EXPORTS CloudWidget : public Widget3D class CV_EXPORTS CloudWidget : public Widget3D

40
modules/viz/src/shape_widgets.cpp
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@ -895,7 +895,7 @@ cv::viz::CameraPositionWidget::CameraPositionWidget(const Matx33f &K, double sca
camera->SetPosition(0.0,0.0,0.0); camera->SetPosition(0.0,0.0,0.0);
camera->SetViewUp(0.0,1.0,0.0); camera->SetViewUp(0.0,1.0,0.0);
camera->SetFocalPoint(0.0,0.0,1.0); camera->SetFocalPoint(0.0,0.0,1.0);
camera->SetClippingRange(0.01, scale * f_y * 0.001); camera->SetClippingRange(0.01, scale);
double planesArray[24]; double planesArray[24];
camera->GetFrustumPlanes(aspect_ratio, planesArray); camera->GetFrustumPlanes(aspect_ratio, planesArray);
@ -922,3 +922,41 @@ cv::viz::CameraPositionWidget::CameraPositionWidget(const Matx33f &K, double sca
WidgetAccessor::setProp(*this, actor); WidgetAccessor::setProp(*this, actor);
setColor(color); setColor(color);
} }
cv::viz::CameraPositionWidget::CameraPositionWidget(const Vec2f &fov, double scale, const Color &color)
{
vtkSmartPointer<vtkCamera> camera = vtkSmartPointer<vtkCamera>::New();
camera->SetViewAngle(fov[1] * 180 / CV_PI); // Vertical field of view
camera->SetPosition(0.0,0.0,0.0);
camera->SetViewUp(0.0,1.0,0.0);
camera->SetFocalPoint(0.0,0.0,1.0);
camera->SetClippingRange(0.01, scale);
double planesArray[24];
// Default aspect ratio = 1.0? fovx/fovy?
camera->GetFrustumPlanes(1.0, planesArray);
vtkSmartPointer<vtkPlanes> planes = vtkSmartPointer<vtkPlanes>::New();
planes->SetFrustumPlanes(planesArray);
vtkSmartPointer<vtkFrustumSource> frustumSource =
vtkSmartPointer<vtkFrustumSource>::New();
frustumSource->SetPlanes(planes);
frustumSource->Update();
// Extract the edges so we have the grid
vtkSmartPointer<vtkExtractEdges> filter = vtkSmartPointer<vtkExtractEdges>::New();
filter->SetInput(frustumSource->GetOutput());
filter->Update();
vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
mapper->SetInput(filter->GetOutput());
vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
WidgetAccessor::setProp(*this, actor);
setColor(color);
}