修改主程序，以C++为程序计算核心

border_renderer.cpp

@@ -0,0 +1,64 @@
+#include <windows.h>
+#include <vector>
+#include <fstream>
+#include <cmath>
+#include <d2d1.h>
+
+// 高性能边框路径生成
+void GenerateBorderPath(int width, int height, int radius, const char* outputPath) {
+    std::ofstream out(outputPath);
+    const float pi = 3.1415926f;
+    const int segments = 24; // 高分段数确保平滑
+    
+    std::vector<POINTFLOAT> points;
+    
+    // 优化后的圆角路径生成
+    auto addArc = [&](float startAngle, float endAngle, float cx, float cy) {
+        for (int i = 0; i <= segments; ++i) {
+            float angle = startAngle + (endAngle - startAngle) * i / segments;
+            points.push_back({
+                cx + radius * cosf(angle),
+                cy + radius * sinf(angle)
+            });
+        }
+    };
+
+    // 左上角
+    addArc(pi, 3*pi/2, radius, radius);
+    
+    // 右上角 
+    addArc(3*pi/2, 2*pi, width - radius, radius);
+    
+    // 右下角
+    addArc(0, pi/2, width - radius, height - radius);
+    
+    // 左下角
+    addArc(pi/2, pi, radius, height - radius);
+
+    // 闭合路径
+    points.push_back(points[0]);
+    
+    // 写入优化格式
+    if (out.is_open()) {
+        for (const auto& p : points) {
+            out << p.x << "," << p.y << "\n";
+        }
+    }
+}
+
+int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int) {
+    int argc;
+    LPWSTR* argv = CommandLineToArgvW(GetCommandLineW(), &argc);
+    
+    if (argc != 5) return 1;
+    
+    int width = _wtoi(argv[1]);
+    int height = _wtoi(argv[2]);
+    int radius = _wtoi(argv[3]);
+    
+    char outputPath[MAX_PATH];
+    wcstombs(outputPath, argv[4], MAX_PATH);
+    
+    GenerateBorderPath(width, height, radius, outputPath);
+    return 0;
+}