1) what do you mean by an opaque object? 2) How can you define a transparent object? 3) How does a shadow form? 4) when can you see an object? 5) What happens to the size of shadow as the object is moved closer to light source?

RELATIONSHIP BETWEEN LIGHT SOURCE,OBJECT AND SHADOW

リーダーボード

表示スタイル

オプション

テンプレートを切り替える

自動保存: を復元しますか?