render_value()

FASTLED_FORCE_INLINE float fl::render_value

(

render_parameters &

animation

)

Definition at line 104 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 FASTLED_FORCE_INLINE, FL_COS_F, FL_NO_EXCEPT, FL_SIN_F, map_float(), and pnoise().

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

Here is the call graph for this function:

Here is the caller graph for this function: