src/xlogo/kernel/LaunchPrimitive.java
src/xlogo/kernel/perspective/MyFog.java
src/xlogo/kernel/perspective/MyLight.java
src/xlogo/kernel/perspective/Element3D.java
src/xlogo/kernel/perspective/ElementPoint.java
src/xlogo/kernel/perspective/Viewer3D.java
src/xlogo/kernel/perspective/LightDialog.java
src/xlogo/kernel/perspective/ElementPolygon.java
src/xlogo/kernel/perspective/ElementLine.java
src/xlogo/kernel/DrawPanel.java