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Change M_2_PI to 2 * PI as it should be

This commit is contained in:
Fred Sundvik 2017-06-25 12:55:18 +03:00
parent dcf9fa1aaa
commit 1e6a3f9e17

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@ -48,7 +48,7 @@ static uint8_t crossfade_start_frame[NUM_ROWS][NUM_COLS];
static uint8_t crossfade_end_frame[NUM_ROWS][NUM_COLS]; static uint8_t crossfade_end_frame[NUM_ROWS][NUM_COLS];
static uint8_t compute_gradient_color(float t, float index, float num) { static uint8_t compute_gradient_color(float t, float index, float num) {
const float two_pi = M_2_PI; const float two_pi = M_PI * 2.0f;
float normalized_index = (1.0f - index / (num - 1.0f)) * two_pi; float normalized_index = (1.0f - index / (num - 1.0f)) * two_pi;
float x = t * two_pi + normalized_index; float x = t * two_pi + normalized_index;
float v = 0.5 * (cosf(x) + 1.0f); float v = 0.5 * (cosf(x) + 1.0f);