formZ SDK | 5.0 API Reference | Project | Modeling | Rendering | Shaders
Description
This function can only be called inside the pixel callback function when implementing a plugin or script shader. It computes the reflected ray off the surface where the current pixel is rendered. This function is typically called before a call to . Its first parameter is the direction of the incoming ray. For mirrored reflections, this is usually the current view direction. The second parameter is the surface normal direction at the current pixel. This normal should be retrieved by a call to (). The last parameter returns the reflected ray direction.
Plugin Prototype
void fz_shdr_ray_reflect(
vec_in, | |
norm_vec, | |
vec_out ) |
Parameters
vec_in [Input]
Direction of the incoming ray.
norm_vec [Input]
Direction of surface normal.
vec_out [Result]
Direction of the reflected ray.
Returns
none
Availability
5.0.0.0
Plugin Example
fz_shdr_get_mirror_factor(&mirr_factor); if ( mirr_factor > 0.0 ) { fz_shdr_get_world_pnt(&world_pt); fz_shdr_get_world_shading_normal(&norm); fz_shdr_get_view_dir(&view_vec); fz_shdr_ray_reflect(&view_vec,&norm,&mirr_vec); fz_shdr_raytrace_reflected(&world_pt,&mirr_vec,mirr_factor,&mirr_col); mirr_col *= mirr_factor; }
See Also
Function Set
Defined in