s_exposure Struct Reference

The struct s_exposure contains the necessary fields to calculate the a scene's lighting. Exposure is a technical term from photography that means exposition to light. More...

#include <materials.h>

Collaboration diagram for s_exposure:

Data Fields
t_color	effective_color
t_vector	lightv
t_vector	reflectv
float	light_dot_normal
float	reflect_dot_eye
float	factor

Detailed Description

The struct s_exposure contains the necessary fields to calculate the a scene's lighting. Exposure is a technical term from photography that means exposition to light.

Parameters

effective_color	Combines the surface colo with light's color/ intensity.
lightv	Finds the direction to the light source.
reflectv	Finds the direction to the light reflection.
light_dot_normal	Represents the cosine of the angle between the light vector and the normal vector. A negative number means the light is on the other side of the surface.
reflect_dot_eye	Represents the cosine of the angle between the reflection vector and the eye vector. A negative number means the light reflects away from the eye.
factor	Computes the specular contribution.