修改线中某个点的值

line_vacuate/studio_geo_c.c

@@ -74,7 +74,7 @@ unsigned int studio_line_c_size(const studio_line_c *line)
     return line->size;
 }
 
-// 获取指定位置的点的引用 (注意索引越界问题)
+
 studio_point_c studio_line_c_get_point(const studio_line_c *line, unsigned int index)
 {
     studio_point_c tmp;
@@ -83,9 +83,22 @@ studio_point_c studio_line_c_get_point(const studio_line_c *line, unsigned int i
         tmp = line->data[index];
         return tmp;
     }
-    return tmp; // 越界返回空指针
+    return tmp; // 越界返回0，0点
 }
 
+bool studio_line_c_set_point(studio_line_c *line, unsigned int index, studio_point_c point)
+{
+    bool status = false;
+    if (index > line->size)
+    {
+        return status;
+    }
+    line->data[index] = point;
+    status = true;
+    return status;
+}
+
+
 ////////////// 矩形 //////////////
 
 studio_rect_c studio_rect_init(double l, double t, double r, double b)

line_vacuate/studio_geo_c.h

@@ -68,6 +68,8 @@ unsigned int studio_line_c_size(const studio_line_c *line);
 
 // 获取指定位置的点的引用 (注意索引越界问题)
 studio_point_c studio_line_c_get_point(const studio_line_c *line, unsigned int index);
+// 修改指定索引位置的值
+bool studio_line_c_set_point(studio_line_c *line, unsigned int index, studio_point_c point);
 
 /****************************************/
 /// 矩形框