72 lines
2.0 KiB
Java
72 lines
2.0 KiB
Java
package org.oscim.jni;
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import java.nio.FloatBuffer;
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import java.nio.ShortBuffer;
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public class TriangleJNI {
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public TriangleJNI() {
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}
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// private static boolean initialized = false;
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//
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// private static ShortBuffer sBuf;
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// private static FloatBuffer fBuf;
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//
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// public static synchronized int triangulate(float[] points, int pos, int len, short[] indices) {
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//
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// int numRings = 1;
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//
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// if (!initialized) {
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// fBuf = ByteBuffer.allocateDirect(360 * 4).order(ByteOrder.nativeOrder())
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// .asFloatBuffer();
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// sBuf = ByteBuffer.allocateDirect(360 * 2).order(ByteOrder.nativeOrder())
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// .asShortBuffer();
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// initialized = true;
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// }
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//
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// fBuf.clear();
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// fBuf.put(points, pos, len);
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//
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// sBuf.clear();
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// sBuf.put((short) (len >> 1)); // all points
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// sBuf.put((short) (len >> 1)); // outer ring
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// //sBuf.put((short)4); // inner ring
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//
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// int numTris = TriangleJNI.triangulate(fBuf, numRings, sBuf);
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// if (numTris > 100)
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// Log.d("triangle", "Triangles: " + numTris);
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//
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// sBuf.limit(numTris * 3);
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// sBuf.position(0);
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//
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// // for(int i = 0; i < numTris * 3; i+=3){
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// // Log.d("triangle", ">>" + sBuf.get()+ " "+ sBuf.get() + " "+ sBuf.get());
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// // }
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//
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// sBuf.get(indices, 0, numTris * 3);
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//
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// return numTris * 3;
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// }
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/**
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* !!! NOT for general use!!! - this is specifically for ExtrusionLayer
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* .
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*
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* @param points points to use: array of x,y coordinates
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* @param numRings number of rings in polygon == outer(1) + inner rings
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* @param io input: 1. number of all points, 2.. number of points in rings -
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* times 2!
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* output: indices of triangles, 3 per triangle :) (indices use
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* stride=2, i.e. 0,2,4...)
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* @param ioffset offset used to add offset to indices
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* @return number of triangles in io buffer
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*/
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public static native int triangulate(FloatBuffer points, int numRings, ShortBuffer io,
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int ioffset);
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static {
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System.loadLibrary("triangle-jni");
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}
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}
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