Extend pad divisions a little off the board

This ensures that the pads get completely divided.

node_board/main.cpp

@@ -28,6 +28,10 @@ public:
     }
 
     void set_pixel(int32_t x, int32_t y, uint8_t value = 255) {
+        x = std::max(-2 * min_cut_thickness_px_, x);
+        x = std::min(width_px_ + 2 * min_cut_thickness_px_, x);
+        y = std::max(-2 * min_cut_thickness_px_, y);
+        y = std::min(height_px_ + 2 * min_cut_thickness_px_, y);
         png_writer_.set_pixel(2 * min_cut_thickness_px_ + x,
                               2 * min_cut_thickness_px_ + height_px_ - y - 1,
                               value);
@@ -36,10 +40,6 @@ public:
     void draw_int_rectangle(
         int32_t x_min, int32_t x_max, int32_t y_min, int32_t y_max, uint8_t value = 255
     ) {
-        x_min = std::max(0, x_min);
-        x_max = std::min(width_px_, x_max);
-        y_min = std::max(0, y_min);
-        y_max = std::min(height_px_, y_max);
         for (int32_t x = x_min; x < x_max; ++x) {
             for (int32_t y = y_min; y < y_max; ++y) {
                 set_pixel(x, y, value);
@@ -197,6 +197,28 @@ int main() {
                          soic_top_y - pad_height - min_cut_thickness,
                          soic_top_y);
 
+    // Extend pad divisions
+    board.draw_rectangle(cable_pad_width,
+                         cable_pad_width + min_cut_thickness,
+                         -min_cut_thickness,
+                         0,
+                         0);
+    board.draw_rectangle(cable_pad_width,
+                         cable_pad_width + min_cut_thickness,
+                         height,
+                         height + min_cut_thickness,
+                         0);
+    board.draw_rectangle(width - cable_pad_width - min_cut_thickness,
+                         width - cable_pad_width,
+                         -min_cut_thickness,
+                         0,
+                         0);
+    board.draw_rectangle(width - cable_pad_width - min_cut_thickness,
+                         width - cable_pad_width,
+                         height,
+                         height + min_cut_thickness,
+                         0);
+
     board.save("node_board_traces.png");
     board.save_outline("node_board_outline.png");