Helper class that adds LookAt functionality. More...

#include <LookAt.h>

Inheritance diagram for DD::Image::LookAt:

Public Member Functions
	LookAt (int defaultLookAxis=kAxisZPlus)

virtual Op *	lookat_input () const =0
	The lookat input op.

void	knobs (Knob_Callback f)
	Adds the 'Look' tab and knobs for all the look at options.

int	knobChanged (Op parent, Knob k)
	disables the look at input is not present

void	lookAt (Matrix4 &matrix)
	performs the look at on the incoming matrix

void	lookMatrixAt (const OutputContext &oc, Matrix4 &concatMatrix)
	performs the look at on the incoming matrix for a given context

Protected Types
enum	{ kAxisZPlus , kAxisZMinus , kAxisYPlus , kAxisYMinus , kAxisXPlus , kAxisXMinus }

Protected Member Functions
void	perform_lookat (Matrix4 &concatMatrix, const Matrix4 &axisMatrix)

Protected Attributes
Matrix4	lookat_matrix_
	Matrix for rotating to look at the look input.

Matrix4	my_local
	For the Axis_Knob to store into.

bool	my_transform_normals

int	my_lookat_axis

bool	my_rotate_x

bool	my_rotate_y

bool	my_rotate_z

bool	my_lookat_use_quat

double	my_lookat_strength

Static Protected Attributes
static const char *const	ms_lookat_axis_choices []

Detailed Description

Helper class that adds LookAt functionality.

Member Function Documentation

virtual Op * DD::Image::LookAt::lookat_input ( ) const

pure virtual

The lookat input op.