方块。

8By8/8By8.ino

@@ -60,32 +60,34 @@ public:
     }
   }
 
-  static void draw_line(int x, int y, int z, int length, int direction, int brightness) {
-    if (x >=8 || x < 0 || y >=8 || y < 0 || z >= 8 || z < 0) {
+  static void draw_line(int x, int y, int z, int length, int direction,
+                        int brightness) {
+    if (x >= 8 || x < 0 || y >= 8 || y < 0 || z >= 8 || z < 0) {
       return;
     }
-    if (direction >= 3 || direction < 0 || length <= 0 || brightness >= 4 || brightness < 0) {
+    if (direction >= 3 || direction < 0 || length <= 0 || brightness >= 4 ||
+        brightness < 0) {
       return;
     }
     // 0: x
     // 1: y
     // 2: z
     switch (direction) {
-      case 0:
-        for (int i = 0; i < length; i++) {
-          set_status(x + i, y, z, brightness);
-        }
-        break;
-      case 1:
-        for (int i = 0; i < length; i++) {
-          set_status(x, y + i, z, brightness);
-        }
-        break;
-      case 2:
-        for (int i = 0; i < length; i++) {
-          set_status(x, y, z + i, brightness);
-        }
-        break;
+    case 0:
+      for (int i = 0; i < length; i++) {
+        set_status(x + i, y, z, brightness);
+      }
+      break;
+    case 1:
+      for (int i = 0; i < length; i++) {
+        set_status(x, y + i, z, brightness);
+      }
+      break;
+    case 2:
+      for (int i = 0; i < length; i++) {
+        set_status(x, y, z + i, brightness);
+      }
+      break;
     }
   }
 };
@@ -107,15 +109,32 @@ void setup() {
   Serial.begin(115200);
 }
 
-void loop() {
+int step = 1;
+int i = 0;
 
-  for (int i = 7; i >= 0; i--) {
-    for (int j = 0; j < 8; j++) {
-      for (int k = 0; k < 8; k++) {
-        Cube::set_status(i, j, k, bright);
-        delay(5);
-      }
-    }
+void loop() {
+  Cube::clear();
+  Cube::draw_line(3 - i, 3 - i, 3 - i, 2 * i + 2, 0, 3);
+  Cube::draw_line(3 - i, 4 + i, 3 - i, 2 * i + 2, 0, 3);
+  Cube::draw_line(3 - i, 3 - i, 4 + i, 2 * i + 2, 0, 3);
+  Cube::draw_line(3 - i, 4 + i, 4 + i, 2 * i + 2, 0, 3);
+
+  Cube::draw_line(3 - i, 3 - i, 3 - i, 2 * i + 2, 1, 3);
+  Cube::draw_line(4 + i, 3 - i, 3 - i, 2 * i + 2, 1, 3);
+  Cube::draw_line(3 - i, 3 - i, 4 + i, 2 * i + 2, 1, 3);
+  Cube::draw_line(4 + i, 3 - i, 4 + i, 2 * i + 2, 1, 3);
+
+  Cube::draw_line(3 - i, 3 - i, 3 - i, 2 * i + 2, 2, 3);
+  Cube::draw_line(3 - i, 4 + i, 3 - i, 2 * i + 2, 2, 3);
+  Cube::draw_line(4 + i, 3 - i, 3 - i, 2 * i + 2, 2, 3);
+  Cube::draw_line(4 + i, 4 + i, 3 - i, 2 * i + 2, 2, 3);
+
+  delay(50);
+  i += step;
+  if (i >= 3) {
+    step = -1;
+  }
+  else if (i <= 0) {
+    step = 1;
   }
-  bright = (bright + 1) % 4;
 }