indexedtrianglefanarray.java

JAVA3D矩陈的相关类

/*
 * $RCSfile: IndexedTriangleFanArray.java,v $
 *
 * Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
 *
 * Use is subject to license terms.
 *
 * $Revision: 1.5 $
 * $Date: 2007/02/09 17:18:05 $
 * $State: Exp $
 */

package javax.media.j3d;

/**
 * The IndexedTriangleFanArray object draws an array of vertices as a set of
 * connected triangle fans.  An array of per-strip
 * index counts specifies where the separate strips (fans) appear
 * in the indexed vertex array.  For every strip in the set,
 * each vertex, beginning with the third vertex in the array,
 * defines a triangle to be drawn using the current vertex,
 * the previous vertex and the first vertex.  This can be thought of
 * as a collection of convex polygons.
 */

public class IndexedTriangleFanArray extends IndexedGeometryStripArray {

    // non-public, no parameter constructor
    IndexedTriangleFanArray() {}

    /**
     * Constructs an empty IndexedTriangleFanArray object using the
     * specified parameters.
     *
     * @param vertexCount
     * see {@link GeometryArray#GeometryArray(int,int)}
     * for a description of this parameter.
     *
     * @param vertexFormat
     * see {@link GeometryArray#GeometryArray(int,int)}
     * for a description of this parameter.
     *
     * @param indexCount
     * see {@link IndexedGeometryArray#IndexedGeometryArray(int,int,int)}
     * for a description of this parameter.
     *
     * @param stripIndexCounts
     * see {@link IndexedGeometryStripArray#IndexedGeometryStripArray(int,int,int,int[])}
     * for a description of this parameter.
     *
     * @exception IllegalArgumentException if vertexCount is less than 1,
     * or indexCount is less than 3,
     * or any element in the stripIndexCounts array is less than 3
     * ;<br>
     * See {@link IndexedGeometryStripArray#IndexedGeometryStripArray(int,int,int,int[])}
     * for more exceptions that can be thrown
     */
    public IndexedTriangleFanArray(int vertexCount,
				   int vertexFormat,
				   int indexCount,
				   int[] stripIndexCounts) {

	super(vertexCount, vertexFormat, indexCount, stripIndexCounts);

        if (vertexCount < 1) 
	    throw new IllegalArgumentException(J3dI18N.getString("IndexedTriangleFanArray0")); 

        if (indexCount < 3 )
	    throw new IllegalArgumentException(J3dI18N.getString("IndexedTriangleFanArray1"));
    }

    /**
     * Constructs an empty IndexedTriangleFanArray object using the
     * specified parameters.
     *
     * @param vertexCount
     * see {@link GeometryArray#GeometryArray(int,int,int,int[])}
     * for a description of this parameter.
     *
     * @param vertexFormat
     * see {@link GeometryArray#GeometryArray(int,int,int,int[])}
     * for a description of this parameter.
     *
     * @param texCoordSetCount
     * see {@link GeometryArray#GeometryArray(int,int,int,int[])}
     * for a description of this parameter.
     *
     * @param texCoordSetMap
     * see {@link GeometryArray#GeometryArray(int,int,int,int[])}
     * for a description of this parameter.
     *
     * @param indexCount
     * see {@link IndexedGeometryArray#IndexedGeometryArray(int,int,int,int[],int)}
     * for a description of this parameter.
     *
     * @param stripIndexCounts
     * see {@link IndexedGeometryStripArray#IndexedGeometryStripArray(int,int,int,int[],int,int[])}
     * for a description of this parameter.
     *
     * @exception IllegalArgumentException if vertexCount is less than 1,
     * or indexCount is less than 3,
     * or any element in the stripIndexCounts array is less than 3
     * ;<br>
     * See {@link IndexedGeometryStripArray#IndexedGeometryStripArray(int,int,int,int[],int,int[])}
     * for more exceptions that can be thrown
     *
     * @since Java 3D 1.2
     */
    public IndexedTriangleFanArray(int vertexCount,
				   int vertexFormat,
				   int texCoordSetCount,
				   int[] texCoordSetMap,
				   int indexCount,
				   int[] stripIndexCounts) {

	super(vertexCount, vertexFormat,
	      texCoordSetCount, texCoordSetMap,
	      indexCount, stripIndexCounts);

        if (vertexCount < 1) 
	    throw new IllegalArgumentException(J3dI18N.getString("IndexedTriangleFanArray0")); 

        if (indexCount < 3 )
	    throw new IllegalArgumentException(J3dI18N.getString("IndexedTriangleFanArray1"));
    }

    /**
     * Constructs an empty IndexedTriangleFanArray object using the
     * specified parameters.
     *
     * @param vertexCount
     * see {@link GeometryArray#GeometryArray(int,int,int,int[],int,int[])}
     * for a description of this parameter.
     *
     * @param vertexFormat
     * see {@link GeometryArray#GeometryArray(int,int,int,int[],int,int[])}
     * for a description of this parameter.
     *
     * @param texCoordSetMap
     * see {@link GeometryArray#GeometryArray(int,int,int,int[],int,int[])}
     * for a description of this parameter.
     *
     * @param vertexAttrCount
     * see {@link GeometryArray#GeometryArray(int,int,int,int[],int,int[])}
     * for a description of this parameter.
     *
     * @param vertexAttrSizes
     * see {@link GeometryArray#GeometryArray(int,int,int,int[],int,int[])}
     * for a description of this parameter.
     *
     * @param indexCount
     * see {@link IndexedGeometryArray#IndexedGeometryArray(int,int,int,int[],int,int[],int)}
     * for a description of this parameter.
     *
     * @param stripIndexCounts
     * see {@link IndexedGeometryStripArray#IndexedGeometryStripArray(int,int,int,int[],int,int[],int,int[])}
     * for a description of this parameter.
     *
     * @exception IllegalArgumentException if vertexCount is less than 1,
     * or indexCount is less than 3,
     * or any element in the stripIndexCounts array is less than 3
     * ;<br>
     * See {@link IndexedGeometryStripArray#IndexedGeometryStripArray(int,int,int,int[],int,int[],int,int[])}
     * for more exceptions that can be thrown
     *
     * @since Java 3D 1.4
     */
    public IndexedTriangleFanArray(int vertexCount,
				   int vertexFormat,
				   int texCoordSetCount,
				   int[] texCoordSetMap,
				   int vertexAttrCount,
				   int[] vertexAttrSizes,
				   int indexCount,
				   int[] stripIndexCounts) {

	super(vertexCount, vertexFormat,
	      texCoordSetCount, texCoordSetMap,
	      vertexAttrCount, vertexAttrSizes,
	      indexCount, stripIndexCounts);

        if (vertexCount < 1) 
	    throw new IllegalArgumentException(J3dI18N.getString("IndexedTriangleFanArray0")); 

        if (indexCount < 3 )
	    throw new IllegalArgumentException(J3dI18N.getString("IndexedTriangleFanArray1"));
    }

    /**
     * Creates the retained mode IndexedTriangleFanArrayRetained object that this
     * IndexedTriangleFanArray object will point to.
     */
    void createRetained() {
	this.retained = new IndexedTriangleFanArrayRetained();
	this.retained.setSource(this);
    }

    
    /**
     * @deprecated replaced with cloneNodeComponent(boolean forceDuplicate)
     */
    public NodeComponent cloneNodeComponent() {
        IndexedTriangleFanArrayRetained rt =
                (IndexedTriangleFanArrayRetained) retained;
        int stripIndexCounts[] = new int[rt.getNumStrips()];
        rt.getStripIndexCounts(stripIndexCounts);
        int texSetCount = rt.getTexCoordSetCount();
        int[] texMap = null;
        int vertexAttrCount = rt.getVertexAttrCount();
        int[] vertexAttrSizes = null;
        if (texSetCount > 0) {
            texMap = new int[rt.getTexCoordSetMapLength()];
            rt.getTexCoordSetMap(texMap);
        }
        if (vertexAttrCount > 0) {
            vertexAttrSizes = new int[vertexAttrCount];
            rt.getVertexAttrSizes(vertexAttrSizes);
        }
        IndexedTriangleFanArray t = new IndexedTriangleFanArray(rt.getVertexCount(),
                rt.getVertexFormat(),
                texSetCount,
                texMap,
                vertexAttrCount,
                vertexAttrSizes,
                rt.getIndexCount(),
                stripIndexCounts);
        t.duplicateNodeComponent(this);
        return t;
    }

}