C 卵石-秒针在23秒时造成碰撞

我想为我的鹅卵石写一个模拟手表，所以我决定开始制作一个秒针的动画，只是为了确保我明白我在做什么。我已经这样做了，奇怪的是它只在一分钟后0到22秒之间工作。当它计时到23秒时，它就会崩溃，直到下一分钟开始时才能正确启动

我有一个单层占据了整个屏幕，这是更新该层的回调函数：

void face_layer_update_callback(Layer *me, GContext* ctx) {

  //set colour
  graphics_context_set_stroke_color(ctx,  GColorBlack);

  time_t now = time(NULL);
  struct tm *t = localtime(&now);
  int seconds = t->tm_sec;

  int hand_length = 50;

  GPoint p0 = GPoint(72, 84);

  int x, y, z;

  z = seconds * 6;

  x = hand_length * sin( (PI/180) * z);
  y = hand_length * cos( (PI/180) * z);

  GPoint p1 = GPoint(72 + x, 84 - y);

  graphics_draw_line(ctx, p0, p1);

}

我添加了日志来输出计算值z、x和y，它们正是我所期望的。有人能看出哪里出了问题吗

（顺便说一下，这是在原始卵石上，而不是卵石时间。）

更新：在Thomas的评论之后，我添加了更多日志记录，现在代码如下所示：

void face_layer_update_callback(Layer *me, GContext* ctx) {

  APP_LOG(APP_LOG_LEVEL_DEBUG, "Start of callback routine");

  //set colour
  graphics_context_set_stroke_color(ctx,  GColorBlack);

  time_t now = time(NULL);
  struct tm *t = localtime(&now);
  int seconds = t->tm_sec;

  APP_LOG(APP_LOG_LEVEL_DEBUG, "seconds: %d", seconds);

  int hand_length = 50;

  GPoint p0 = GPoint(72, 84);

  int x, y;
  int degrees;

  degrees = seconds * 6;
  float radians = (PI/180) * degrees;

  APP_LOG(APP_LOG_LEVEL_DEBUG, "About to do trigonometry: degrees = %d", degrees);

  x = hand_length * sin(radians);
  APP_LOG(APP_LOG_LEVEL_DEBUG, "Done sin, about to do cos");
  y = hand_length * cos(radians);

  APP_LOG(APP_LOG_LEVEL_DEBUG, "x = %d", x);
  APP_LOG(APP_LOG_LEVEL_DEBUG, "y = %d", y);
  APP_LOG(APP_LOG_LEVEL_DEBUG, "End of hand: %d, %d", 72 + x, 84 - y);

  GPoint p1 = GPoint(72 + x, 84 - y);

  APP_LOG(APP_LOG_LEVEL_DEBUG, "About to draw hand");

  graphics_draw_line(ctx, p0, p1);

日志显示：

[INFO    ] D analogueface.c:11 Start of callback routine
[INFO    ] D analogueface.c:20 seconds: 21
[INFO    ] D analogueface.c:32 About to do trigonometry: degrees = 126
[INFO    ] D analogueface.c:35 Done sin, about to do cos
[INFO    ] D analogueface.c:38 x = 40
[INFO    ] D analogueface.c:39 y = -29
[INFO    ] D analogueface.c:40 End of hand: 112, 113
[INFO    ] D analogueface.c:44 About to draw hand
[INFO    ] D analogueface.c:11 Start of callback routine
[INFO    ] D analogueface.c:20 seconds: 22
[INFO    ] D analogueface.c:32 About to do trigonometry: degrees = 132
[INFO    ] D analogueface.c:35 Done sin, about to do cos
[INFO    ] D analogueface.c:38 x = 37
[INFO    ] D analogueface.c:39 y = -33
[INFO    ] D analogueface.c:40 End of hand: 109, 117
[INFO    ] D analogueface.c:44 About to draw hand
[INFO    ] D analogueface.c:11 Start of callback routine
[INFO    ] D analogueface.c:20 seconds: 23
[INFO    ] D analogueface.c:32 About to do trigonometry: degrees = 138

我试图记录弧度值，但无法在日志中格式化

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（为试图在评论中添加不应该出现的内容而道歉）。

你知道哪一行是有罪的吗？22秒和23秒的数值是多少？罪过线似乎是罪过计算线。我做了一些更改并添加了更多日志记录：@Thomas:analogueface.c:11开始回调例程
analogueface.c:20秒：22
analogueface.c:32即将做三角学：度=132
analogueface.c:35完成，即将做cos
analogueface.c:38 x=37
analogueface.c:39 y=-33
analogueface.c:44即将画手
analogueface.c:11开始回调例程
analogueface.c:20秒：23
analogueface.c:32即将做三角学：度=138
对这种格式表示歉意我需要找出如何在评论…请编辑问题：）@Thomas我已经做了-为新手错误道歉。：）