vtkm::Cylinder Class Reference

Implicit function for a cylinder. More...

#include <ImplicitFunction.h>

Inheritance diagram for vtkm::Cylinder:

Public Member Functions
	Cylinder ()
	Construct cylinder radius of 0.5; centered at origin with axis along y coordinate axis. More...
	Cylinder (const Vector &axis, Scalar radius)
	Construct a cylinder with the given axis and radius. More...
	Cylinder (const Vector &center, const Vector &axis, Scalar radius)
	Construct a cylinder at the given center, axis, and radius. More...
void	SetCenter (const Vector &center)
	Specify the center of the cylinder. More...
void	SetAxis (const Vector &axis)
	Specify the direction of the axis of the cylinder. More...
void	SetRadius (Scalar radius)
	Specify the radius of the cylinder. More...
Scalar	Value (const Vector &point) const
	Evaluate the value of the implicit function. More...
Vector	Gradient (const Vector &point) const
	Evaluate the gradient of the implicit function. More...

Private Attributes
Vector	Center
Vector	Axis
Scalar	Radius

Detailed Description

Implicit function for a cylinder.

Cylinder computes the implicit function and function gradient for a cylinder using F(r)=r^2-Radius^2. By default the Cylinder is centered at the origin and the axis of rotation is along the y-axis. You can redefine the center and axis of rotation by setting the Center and Axis data members.

Note that the cylinder is infinite in extent.

Constructor & Destructor Documentation

Cylinder() [1/3]

vtkm::Cylinder::Cylinder ( )

inline

Construct cylinder radius of 0.5; centered at origin with axis along y coordinate axis.

Cylinder() [2/3]

vtkm::Cylinder::Cylinder ( const Vector &  axis, Scalar  radius  )

inline

Construct a cylinder with the given axis and radius.

The cylinder is centered at the origin.

Cylinder() [3/3]

vtkm::Cylinder::Cylinder ( const Vector &  center, const Vector &  axis, Scalar  radius  )

inline

Construct a cylinder at the given center, axis, and radius.

Member Function Documentation

Gradient()

Vector vtkm::Cylinder::Gradient ( const Vector &  point ) const

inline

Evaluate the gradient of the implicit function.

The Gradient() method for an implicit function takes a vtkm::Vec3f and returns a vtkm::Vec3f representing the pointing direction from the implicit function's shape. Gradient calculations are more object shape specific. It is advised to look at the individual shape implementations for specific implicit functions.

SetAxis()

void vtkm::Cylinder::SetAxis ( const Vector &  axis )

inline

Specify the direction of the axis of the cylinder.

SetCenter()

void vtkm::Cylinder::SetCenter ( const Vector &  center )

inline

Specify the center of the cylinder.

The axis of the cylinder goes through the center.

SetRadius()

void vtkm::Cylinder::SetRadius ( Scalar  radius )

inline

Specify the radius of the cylinder.

Value()

Scalar vtkm::Cylinder::Value ( const Vector &  point ) const

inline

Evaluate the value of the implicit function.

The Value() method for an implicit function takes a vtkm::Vec3f and returns a vtkm::FloatDefault representing the orientation of the point with respect to the implicit function's shape. Negative scalar values represent vector points inside of the implicit function's shape. Positive scalar values represent vector points outside the implicit function's shape. Zero values represent vector points that lie on the surface of the implicit function.

Member Data Documentation

Axis

Vector vtkm::Cylinder::Axis

private

Center

Vector vtkm::Cylinder::Center

private

Radius

Scalar vtkm::Cylinder::Radius

private

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The documentation for this class was generated from the following file:

• ImplicitFunction.h