qmk-dactyl-manuform-a/quantum/rgb_matrix/animations/colorband_spiral_val_anim.h

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#ifdef ENABLE_RGB_MATRIX_BAND_SPIRAL_VAL
RGB_MATRIX_EFFECT(BAND_SPIRAL_VAL)
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# ifdef RGB_MATRIX_CUSTOM_EFFECT_IMPLS
static HSV BAND_SPIRAL_VAL_math(HSV hsv, int16_t dx, int16_t dy, uint8_t dist, uint8_t time) {
hsv.v = scale8(hsv.v + dist - time - atan2_8(dy, dx), hsv.v);
return hsv;
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}
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bool BAND_SPIRAL_VAL(effect_params_t* params) { return effect_runner_dx_dy_dist(params, &BAND_SPIRAL_VAL_math); }
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# endif // RGB_MATRIX_CUSTOM_EFFECT_IMPLS
#endif // ENABLE_RGB_MATRIX_BAND_SPIRAL_VAL