docs: document bevelRotation transform

src/en/script-reference/others/transform-reference.md

@@ -183,6 +183,17 @@ Bevel opacity.
 
 Bevel thickness.
 
+### bevelRotation
+- Default: 0
+- Unit: degrees
+
+The angle of the bevel light source. Adjusting this property alone produces no visible difference if `bevel` or `bevelThickness` is at its default value.
+
+``` webgal
+changeFigure:1/open_eyes.png -id=aaa -transform={"bevel":1,"bevelThickness":20,"bevelRotation":45};
+setTransform:{"bevel":1,"bevelThickness":20,"bevelRotation":180} -target=aaa -duration=500;
+```
+
 ### bevelRed / bevelGreen / bevelBlue
 - Default: 255
 - Range: 0 to 255

src/ja/script-reference/others/transform-reference.md

@@ -158,6 +158,17 @@ setTransform:{"bloom":1,"bloomBlur":10,"bloomThreshold":0.8} -target=aaa -durati
 
 ベベルの厚さです。
 
+### bevelRotation
+- デフォルト値: 0
+- 単位: 度
+
+ベベルの光源角度です。`bevel` または `bevelThickness` がデフォルト値の場合、この属性だけを調整しても見た目の違いはありません。
+
+``` webgal
+changeFigure:1/open_eyes.png -id=aaa -transform={"bevel":1,"bevelThickness":20,"bevelRotation":45};
+setTransform:{"bevel":1,"bevelThickness":20,"bevelRotation":180} -target=aaa -duration=500;
+```
+
 ### bevelRed / bevelGreen / bevelBlue
 - デフォルト値: 255
 - 範囲: 0 から 255

src/script-reference/others/transform-reference.md

@@ -248,6 +248,17 @@ changeFigure:1/open_eyes.png -id=aaa -transform={"bevel":1,"bevelThickness":20};
 setTransform:{"bevel":1,"bevelThickness":30} -target=aaa -duration=500;
 ```
 
+### bevelRotation
+- 默认值：0
+- 单位：度
+
+倒角光源的角度。如果 `bevel` 或 `bevelThickness` 为默认值，单独调整此属性不会有任何视觉上的区别。
+
+``` webgal
+changeFigure:1/open_eyes.png -id=aaa -transform={"bevel":1,"bevelThickness":20,"bevelRotation":45};
+setTransform:{"bevel":1,"bevelThickness":20,"bevelRotation":180} -target=aaa -duration=500;
+```
+
 ### bevelRed
 - 默认值：255
 - 范围：0 到 255