xiug

lab1/2.cpp

@@ -15,7 +15,7 @@ void drawDDALine(int x1, int y1, int x2, int y2) {
     int dy = y2 - y1;
 
     // 确定步数，取 dx 和 dy 中绝对值较大的那个
-    int steps = std::abs(dx) > std::abs(dy) ? std::abs(dx) : std::abs(dy);
+    int steps = std::abs(dx) > std::abs(dy) ? std::abs(dx) : std::abs(dy);  //三元表达式
 
     // 计算每一步的增量
     float xIncrement = (float)dx / steps;
@@ -28,7 +28,7 @@ void drawDDALine(int x1, int y1, int x2, int y2) {
     for (int k = 0; k < steps; k++) {
         x += xIncrement;
         y += yIncrement;
-        // 将浮点坐标四舍五入转换为整数像素坐标
+        // 将浮点坐标四舍五入取整转换为整数像素坐标
 		std::cout << (int)round(x) << ", " << (int)round(y)<<"\n";
         glVertex2i((int)round(x), (int)round(y));
     }