net.algart.model3d.common.movement.view
Class BunkerWallShapingRule

java.lang.Object
  net.algart.model3d.common.movement.view.BunkerWallShapingRule

All Implemented Interfaces:

ShapingRule

public class BunkerWallShapingRule
extends java.lang.Object
implements ShapingRule

Shaping rule, which converts a bunker wall, on which 3 or more vertices are specified, to a drawable plane polygon in 3D space.

More precisely, in this class:

• isApplicable(Object item) method returns true if and only if item instanceof BunkerWall and the number of the vertices, specified at the wall, is ≥3;
• getShape(Object item) returns the polygon
      new PlanePolygon3D(a,b,c,d,verticesXYZ),
  where a, b, c, d and verticesXYZ are the corresponding parameters of the given wall (BunkerWall)item.

This class is immutable and thread-safe: there are no ways to modify settings of the created instance.

AlgART Laboratory 2010

Since:

JDK 1.5

Version:

1.0

Author:

Daniel Alievsky

BunkerWallShapingRule

public BunkerWallShapingRule()

isApplicable

public boolean isApplicable(java.lang.Object item)

Description copied from interface: ShapingRule

Checks whether this shaping rule is applicable to the given object (item), i.e. this shaping rule "knows" which 3D shape describes this object. If this method returns false, you should not call ShapingRule.getShape(Object) method of this interface for this object: it can throw an exception. If this method returns true, you can freely use ShapingRule.getShape(Object) method.

If this method returns false for the given item for all shaping rules, available in Drawer3D object, and if this item does not implement Shape3D interface itself, then this item is not drawn by the Drawer3D.draw(java.util.Collection) method.

The argument of this method can be null; in this case, this method returns false.

Specified by:

isApplicable in interface ShapingRule

Parameters:

item - the object which you want to draw; can be null, then this method returns false.

Returns:

true if this shaping rule can be used for this item.

getShape

public Shape3D getShape(java.lang.Object item)

Description copied from interface: ShapingRule

Returns the newly created shape of the specified 3D object. If ShapingRule.isApplicable(Object) returns false, this method usually throws ClassCastException, but other runtime exceptions are also possible.

Specified by:

getShape in interface ShapingRule

Parameters:

item - some 3D object.

Returns:

shape of this item.