stad

terrain.h

@@ -41,6 +41,27 @@ inline QVector2D getHexEdgeMidpoint(int edge) {
     return midpoints[(edge % 6 + 6) % 6];
 }
 
+// Returns the two corner endpoints in local tile coordinates for a given edge (radius = 0.5)
+inline void getHexEdgeEndpoints(int edge, QVector2D &p1, QVector2D &p2) {
+    static const QVector2D corners[6] = {
+        QVector2D(-0.25f,  0.43301270f), // 0: Top-Left
+        QVector2D( 0.25f,  0.43301270f), // 1: Top-Right
+        QVector2D( 0.5f,   0.0f),         // 2: Right
+        QVector2D( 0.25f, -0.43301270f), // 3: Bottom-Right
+        QVector2D(-0.25f, -0.43301270f), // 4: Bottom-Left
+        QVector2D(-0.5f,   0.0f)          // 5: Left
+    };
+    switch ((edge % 6 + 6) % 6) {
+        case 0: p1 = corners[5]; p2 = corners[0]; break;
+        case 1: p1 = corners[0]; p2 = corners[1]; break;
+        case 2: p1 = corners[1]; p2 = corners[2]; break;
+        case 3: p1 = corners[2]; p2 = corners[3]; break;
+        case 4: p1 = corners[3]; p2 = corners[4]; break;
+        case 5: p1 = corners[4]; p2 = corners[5]; break;
+        default: p1 = corners[0]; p2 = corners[1]; break;
+    }
+}
+
 // Returns the coordinates of the neighbor tile sharing the given edge
 inline void getHexNeighbor(int x, int y, int edge, int &nx, int &ny) {
     bool even = (x % 2 == 0);