NOname-awa/graphics2d: add line direction (#733)

TurboWarp · Aug 25, 2023 · be3127e · be3127e
1 parent 46c0a37
commit be3127e
Showing 1 changed file with 43 additions and 1 deletion.
diff --git a/extensions/NOname-awa/graphics2d.js b/extensions/NOname-awa/graphics2d.js
@@ -8,7 +8,8 @@
   Scratch.translate.setup({
     zh: {
       name: "图形 2D",
-      line_section: "线段（[x1],[y1]）到（[x2],[y2]）",
+      line_section: "（[x1],[y1]）到（[x2],[y2]）的距离",
+      ray_direction: "（[x1],[y1]）到（[x2],[y2]）的方向",
       triangle: "三角形（[x1],[y1]）（[x2],[y2]）（[x3],[y3]）的 [CS]",
       triangle_s: "三角形 [s1] [s2] [s3] 的面积",
       quadrilateral:
@@ -57,6 +58,32 @@
               },
             },
           },
+          {
+            opcode: "ray_direction",
+            blockType: Scratch.BlockType.REPORTER,
+            text: Scratch.translate({
+              id: "ray_direction",
+              default: "direction of ([x1],[y1]) to ([x2],[y2])",
+            }),
+            arguments: {
+              x1: {
+                type: Scratch.ArgumentType.NUMBER,
+                defaultValue: "0",
+              },
+              y1: {
+                type: Scratch.ArgumentType.NUMBER,
+                defaultValue: "0",
+              },
+              x2: {
+                type: Scratch.ArgumentType.NUMBER,
+                defaultValue: "100",
+              },
+              y2: {
+                type: Scratch.ArgumentType.NUMBER,
+                defaultValue: "0",
+              },
+            },
+          },
           {
             opcode: "vertical",
             blockType: Scratch.BlockType.BOOLEAN,
@@ -270,6 +297,21 @@
         Math.pow(args.x1 - args.x2, 2) + Math.pow(args.y1 - args.y2, 2)
       );
     }
+    ray_direction(args) {
+      // Added by NexusKitten
+      // 由 NexusKitten 添加
+      const dx =
+        Scratch.Cast.toNumber(args.x2) - Scratch.Cast.toNumber(args.x1);
+      const dy =
+        Scratch.Cast.toNumber(args.y2) - Scratch.Cast.toNumber(args.y1);
+      if (dx === 0 && dy === 0) {
+        return 0;
+      } else if (dy < 0) {
+        return (180 / Math.PI) * Math.atan(dx / dy) + 180;
+      } else {
+        return (180 / Math.PI) * Math.atan(dx / dy);
+      }
+    }
     vertical(args) {
       if (isNaN(args.a) || isNaN(args.b)) {
         return false;