qmk_firmware/quantum/rgb_matrix_animations/rainbow_moving_chevron_anim.h

#ifndef DISABLE_RGB_MATRIX_RAINBOW_MOVING_CHEVRON
RGB_MATRIX_EFFECT(RAINBOW_MOVING_CHEVRON)
#ifdef RGB_MATRIX_CUSTOM_EFFECT_IMPLS

static void RAINBOW_MOVING_CHEVRON_math(HSV* hsv, uint8_t i, uint8_t time) {
    hsv->h = abs8(g_led_config.point[i].y - k_rgb_matrix_center.y) + (g_led_config.point[i].x - time) + rgb_matrix_config.hue;
}

bool RAINBOW_MOVING_CHEVRON(effect_params_t* params) {
    return effect_runner_i(params, &RAINBOW_MOVING_CHEVRON_math);
}

#endif // RGB_MATRIX_CUSTOM_EFFECT_IMPLS
#endif // DISABLE_RGB_MATRIX_RAINBOW_MOVING_CHEVRON