eu.mihosoft.vrl.v3d.ext.org.poly2tri.TriangulationPoint Maven / Gradle / Ivy

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Java implementation of BSP based CSG (Constructive Solid Geometry)
There is a newer version: 0.5.7
/**
 * TriangulationPoint.java
 *
 * Copyright 2014-2014 Michael Hoffer . All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice, this list of
 *       conditions and the following disclaimer.
 *
 *    2. Redistributions in binary form must reproduce the above copyright notice, this list
 *       of conditions and the following disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY Michael Hoffer  "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Michael Hoffer  OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation are those of the
 * authors and should not be interpreted as representing official policies, either expressed
 * or implied, of Michael Hoffer .
 */ 

package eu.mihosoft.vrl.v3d.ext.org.poly2tri;
/* Poly2Tri
 * Copyright (c) 2009-2010, Poly2Tri Contributors
 * http://code.google.com/p/poly2tri/
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * * Neither the name of Poly2Tri nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
import java.util.ArrayList;



abstract class TriangulationPoint extends Point
{
    // List of edges this point constitutes an upper ending point (CDT)
    private ArrayList edges; 
    
    @Override
    public String toString()
    {
        return "[" + getX() + "," + getY() + "]";
    }
    
    public abstract double getX();
    public abstract double getY();
    public abstract double getZ();

    public abstract float getXf();
    public abstract float getYf();
    public abstract float getZf();
    
    public abstract void set( double x, double y, double z );
    
    public ArrayList getEdges()
    {
        return edges;
    }

    public void addEdge( DTSweepConstraint e )
    {
        if( edges == null )
        {
            edges = new ArrayList();
        }
        edges.add( e );
    }

    public boolean hasEdges()
    {
        return edges != null;
    }

    /**
     * @param p - edge destination point
     * @return the edge from this point to given point
     */
    public DTSweepConstraint getEdge( TriangulationPoint p )
    {
        for( DTSweepConstraint c : edges )
        {
            if( c.p == p )
            {
                return c;
            }
        }
        return null;
    }
    
    public boolean equals(Object obj) 
    {
        if( obj instanceof TriangulationPoint ) 
        {
            TriangulationPoint p = (TriangulationPoint)obj;
            return getX() == p.getX() && getY() == p.getY();
        }
        return super.equals( obj );
    }

    public int hashCode()
    {
        long bits = java.lang.Double.doubleToLongBits(getX());
        bits ^= java.lang.Double.doubleToLongBits(getY()) * 31;
        return (((int) bits) ^ ((int) (bits >> 32)));
    }

}