render_value()

FASTLED_FORCE_INLINE float fl::render_value

(

render_parameters &

animation

)

Definition at line 103 of file engine_core.h.

                                                                      {
    // Convert polar coordinates back to cartesian ones
    float newx = (animation.offset_x + animation.center_x -
                  (FL_COS_F(animation.angle) * animation.dist)) *
                 animation.scale_x;
    float newy = (animation.offset_y + animation.center_y -
                  (FL_SIN_F(animation.angle) * animation.dist)) *
                 animation.scale_y;
    float newz = (animation.offset_z + animation.z) * animation.scale_z;
 
    // Render noise value at this new cartesian point
    float raw_noise_field_value = pnoise(newx, newy, newz);
 
    // Enhance histogram (improve contrast) by setting black and white point
    if (raw_noise_field_value < animation.low_limit)
        raw_noise_field_value = animation.low_limit;
    if (raw_noise_field_value > animation.high_limit)
        raw_noise_field_value = animation.high_limit;
 
    float scaled_noise_value =
        map_float(raw_noise_field_value, animation.low_limit,
                  animation.high_limit, 0, 255);
 
    return scaled_noise_value;
}

References fl::render_parameters::angle, fl::render_parameters::center_x, fl::render_parameters::center_y, fl::render_parameters::dist, FASTLED_FORCE_INLINE, FL_COS_F, FL_SIN_F, fl::render_parameters::high_limit, fl::render_parameters::low_limit, map_float(), fl::render_parameters::offset_x, fl::render_parameters::offset_y, fl::render_parameters::offset_z, pnoise(), fl::render_parameters::scale_x, fl::render_parameters::scale_y, fl::render_parameters::scale_z, and fl::render_parameters::z.

Referenced by fl::Engine::render_value().

Here is the call graph for this function:

Here is the caller graph for this function: