DD::Image::LookAt Class Reference

Helper class that adds LookAt functionality. More...

Inherited by DD::Image::AxisOp, and DD::Image::TransformGeo.

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.