static int32_t ball_traj(Ball *ball) {
int32_t theta;
theta = atan2_lookup((int16_t)(ball->center.y - sg_center.y),
(int16_t)(ball->center.x - sg_center.x));
theta += TRIG_MAX_ANGLE / 4; // idk why...
return theta;
}
void prv_draw_pupil(GContext *ctx, const GRect *eye_rect, const GPoint *perimeter_point) {
const int16_t pupil_radius = 3;
const GSize pupil_size = GSize(pupil_radius * 2, pupil_radius * 2);
const GRect pupil_container_rect = grect_inset((*eye_rect), GEdgeInsets(2 * pupil_radius));
const GPoint pupil_center = grect_center_point(&pupil_container_rect);
const int32_t pupil_angle = atan2_lookup(perimeter_point->y - pupil_center.y,
perimeter_point->x - pupil_center.x) +
DEG_TO_TRIGANGLE(90);
const GRect pupil_rect = grect_centered_from_polar(pupil_container_rect, GOvalScaleModeFitCircle,
pupil_angle, pupil_size);
graphics_fill_radial(ctx, pupil_rect, GOvalScaleModeFitCircle, pupil_radius, 0, TRIG_MAX_ANGLE);
}
static void handle_accel(AccelData *accel_data, uint32_t num_samples) {
angle = atan2_lookup(accel_data->z, accel_data->x) * 360 / TRIG_MAX_ANGLE - 270;
//APP_LOG(APP_LOG_LEVEL_DEBUG, "Angle %ld", angle);
snprintf(text_buffer, sizeof(text_buffer), "%ld", angle);
text_layer_set_text(text_angle, text_buffer);
}
static bool point_in_arc(int32_t aPercent, int32_t x, int32_t y, int32_t radius) {
int32_t a = atan2_lookup(x, -y);
int32_t degree = TRIG_MAX_ANGLE * aPercent / 100;
return (0 <= a && a < degree);
}
