dt_iop_channelmixer_shared_white_preserving_params_t Struct Reference

White-preserving primaries model : per-primary rotation and saturation, no white freedom. More...

#include <channelmixerrgb_shared.h>

Collaboration diagram for dt_iop_channelmixer_shared_white_preserving_params_t:

Data Fields
float	red_rotation
float	red_saturation
float	green_rotation
float	green_saturation
float	blue_rotation
float	blue_saturation

Detailed Description

White-preserving primaries model : per-primary rotation and saturation, no white freedom.

Each primary is the chromaticity of one column of the mixer matrix, expressed in the affine plane of the current mixer basis. rotation turns it around the basis white, and saturation scales its distance to that white by 1 + saturation : -1 collapses the primary onto the white, 0 leaves it untouched, +1 doubles its distance. The three column magnitudes are then SOLVED, not chosen, so that the basis white maps to itself : that constraint is what removes the three remaining degrees of freedom of a 3x3 matrix, and is why six parameters describe the whole white-preserving submanifold exactly. All-zero parameters are the identity matrix, and a uniform saturation is the classic saturation matrix around the basis white.

Definition at line 72 of file channelmixerrgb_shared.h.

Field Documentation

blue_rotation

float dt_iop_channelmixer_shared_white_preserving_params_t::blue_rotation

Definition at line 78 of file channelmixerrgb_shared.h.

Referenced by dt_iop_channelmixer_shared_paint_white_preserving_sliders(), dt_iop_channelmixer_shared_white_preserving_from_matrix(), dt_iop_channelmixer_shared_white_preserving_from_sliders(), dt_iop_channelmixer_shared_white_preserving_to_matrix(), and dt_iop_channelmixer_shared_white_preserving_to_sliders().

blue_saturation

float dt_iop_channelmixer_shared_white_preserving_params_t::blue_saturation

Definition at line 79 of file channelmixerrgb_shared.h.

Referenced by dt_iop_channelmixer_shared_paint_white_preserving_sliders(), dt_iop_channelmixer_shared_white_preserving_from_matrix(), dt_iop_channelmixer_shared_white_preserving_from_sliders(), dt_iop_channelmixer_shared_white_preserving_to_matrix(), and dt_iop_channelmixer_shared_white_preserving_to_sliders().

green_rotation

float dt_iop_channelmixer_shared_white_preserving_params_t::green_rotation

Definition at line 76 of file channelmixerrgb_shared.h.

Referenced by dt_iop_channelmixer_shared_paint_white_preserving_sliders(), dt_iop_channelmixer_shared_white_preserving_from_matrix(), dt_iop_channelmixer_shared_white_preserving_from_sliders(), dt_iop_channelmixer_shared_white_preserving_to_matrix(), and dt_iop_channelmixer_shared_white_preserving_to_sliders().

green_saturation

float dt_iop_channelmixer_shared_white_preserving_params_t::green_saturation

Definition at line 77 of file channelmixerrgb_shared.h.

Referenced by dt_iop_channelmixer_shared_paint_white_preserving_sliders(), dt_iop_channelmixer_shared_white_preserving_from_matrix(), dt_iop_channelmixer_shared_white_preserving_from_sliders(), dt_iop_channelmixer_shared_white_preserving_to_matrix(), and dt_iop_channelmixer_shared_white_preserving_to_sliders().

red_rotation

float dt_iop_channelmixer_shared_white_preserving_params_t::red_rotation

Definition at line 74 of file channelmixerrgb_shared.h.

Referenced by dt_iop_channelmixer_shared_paint_white_preserving_sliders(), dt_iop_channelmixer_shared_white_preserving_from_matrix(), dt_iop_channelmixer_shared_white_preserving_from_sliders(), dt_iop_channelmixer_shared_white_preserving_to_matrix(), and dt_iop_channelmixer_shared_white_preserving_to_sliders().

red_saturation

float dt_iop_channelmixer_shared_white_preserving_params_t::red_saturation

Definition at line 75 of file channelmixerrgb_shared.h.

Referenced by dt_iop_channelmixer_shared_paint_white_preserving_sliders(), dt_iop_channelmixer_shared_white_preserving_from_matrix(), dt_iop_channelmixer_shared_white_preserving_from_sliders(), dt_iop_channelmixer_shared_white_preserving_to_matrix(), and dt_iop_channelmixer_shared_white_preserving_to_sliders().

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

• channelmixerrgb_shared.h