org.scijava.java3d.utils.geometry.GeometryServiceImpl Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of j3dutils Show documentation

Utility functions for the Java 3D Graphics API

The newest version!


package org.scijava.java3d.utils.geometry;

import java.util.ArrayList;

import org.scijava.java3d.GeometryArray;
import org.scijava.java3d.GeometryService;
import org.scijava.vecmath.Point3f;

/**
 * Default implementation of the {@link GeometryService} service interface.
 *
 * @author Curtis Rueden
 */
public class GeometryServiceImpl implements GeometryService {

	@Override
	public int triangulateIslands(final int[][] islandCounts,
		final Point3f[][] outVerts, final int[] contourCounts,
		final ArrayList triangData)
	{
		int vertOffset = 0;
		final NormalGenerator ng = new NormalGenerator();
		for (int i = 0; i < islandCounts.length; i++) {
			contourCounts[0] = islandCounts[i].length;
			final GeometryInfo gi = new GeometryInfo(GeometryInfo.POLYGON_ARRAY);
			gi.setCoordinates(outVerts[i]);
			gi.setStripCounts(islandCounts[i]);
			gi.setContourCounts(contourCounts);
			ng.generateNormals(gi);

			final GeometryArray ga = gi.getGeometryArray(false, false, false);
			vertOffset += ga.getVertexCount();

			triangData.add(ga);
		}
		return vertOffset;
	}

}