Examples with FloatBuffer java.nio.FloatBuffer used on opensource projects

Example 81 with FloatBuffer

use of java.nio.FloatBuffer in project mongomvcc by igd-geo.

the class MongoDBVLargeCollectionTest method largeObjectFloat.

/**
	 * Tests if large objects with float arrays/streams/buffers can be saved in the database
	 * @throws Exception if something goes wrong
	 */
@Test
public void largeObjectFloat() throws Exception {
    VCollection coll = _master.getLargeCollection("images");
    float[] test = new float[1024 * 1024];
    for (int i = 0; i < test.length; ++i) {
        test[i] = (byte) (i & 0xFF);
    }
    Map<String, Object> obj = new HashMap<String, Object>();
    obj.put("name", "Mona Lisa");
    obj.put("data", test);
    coll.insert(obj);
    VCursor vc = coll.find();
    assertEquals(1, vc.size());
    Map<String, Object> obj2 = vc.iterator().next();
    assertEquals("Mona Lisa", obj2.get("name"));
    assertArrayEquals(test, (float[]) obj2.get("data"), 0.00001f);
    FloatBuffer bb = FloatBuffer.wrap(test);
    obj = new HashMap<String, Object>();
    obj.put("name", "Mona Lisa");
    obj.put("data", bb);
    coll.insert(obj);
    Map<String, Object> obj4 = coll.findOne(_factory.createDocument("uid", obj.get("uid")));
    assertEquals("Mona Lisa", obj4.get("name"));
    FloatBuffer bb4 = (FloatBuffer) obj4.get("data");
    bb4.rewind();
    float[] test4 = new float[bb4.remaining()];
    bb4.get(test4);
    assertArrayEquals(test, test4, 0.00001f);
}

Example 82 with FloatBuffer

use of java.nio.FloatBuffer in project jna by java-native-access.

the class PointerBufferTest method testFloatBufferGet.

public void testFloatBufferGet() {
    final float MAGIC = 1234.5678f;
    Memory m = new Memory(8);
    ByteBuffer buf = m.getByteBuffer(0, m.size()).order(ByteOrder.nativeOrder());
    FloatBuffer fb = buf.asFloatBuffer();
    m.setFloat(0, MAGIC);
    assertEquals("Float not read from memory", MAGIC, fb.get(0), 0f);
}

Example 83 with FloatBuffer

use of java.nio.FloatBuffer in project jna by java-native-access.

the class BufferArgumentsMarshalTest method testWrappedFloatArrayArguent.

public void testWrappedFloatArrayArguent() {
    float[] array = new float[1024];
    FloatBuffer buf = FloatBuffer.wrap(array, 512, 512);
    final float MAGIC = -118.625f;
    lib.fillFloatBuffer(buf, 512, MAGIC);
    for (int i = 0; i < array.length; i++) {
        assertEquals("Bad value at index " + i, i < 512 ? 0 : MAGIC, array[i]);
    }
}

Example 84 with FloatBuffer

use of java.nio.FloatBuffer in project Horizon by Yalantis.

the class Buffers method makeInterleavedBuffer.

public static FloatBuffer makeInterleavedBuffer(float[] tData, int triangles) {
    int dataLength = tData.length;
    final FloatBuffer interleavedBuffer = ByteBuffer.allocateDirect(dataLength * Const.BYTES_PER_FLOAT).order(ByteOrder.nativeOrder()).asFloatBuffer();
    int tOffset = 0;
    for (int i = 0; i < triangles; i++) {
        for (int j = 0; j < Const.POINTS_PER_TRIANGLE; j++) {
            /**
                 * This doesn't seem to do make much sense for one array, but we might need to scale it up
                 */
            interleavedBuffer.put(tData, tOffset, Const.T_DATA_SIZE);
            tOffset += Const.T_DATA_SIZE;
        }
    }
    interleavedBuffer.position(0);
    return interleavedBuffer;
}

Example 85 with FloatBuffer

use of java.nio.FloatBuffer in project StarWars.Android by Yalantis.

the class Buffers method makeInterleavedBuffer.

public static FloatBuffer makeInterleavedBuffer(float[] positionData, float[] normals, float[] uvData, float[] tileXyData, int tiles) {
    int dataLength = positionData.length + normals.length * tiles + uvData.length + tileXyData.length;
    final FloatBuffer interleavedBuffer = ByteBuffer.allocateDirect(dataLength * Const.BYTES_PER_FLOAT).order(ByteOrder.nativeOrder()).asFloatBuffer();
    int positionOffset = 0, normalOffset = 0, textureOffset = 0, tileXyOffset = 0;
    for (int i = 0; i < tiles; i++) {
        for (int j = 0; j < Const.POINTS_PER_TILE; j++) {
            interleavedBuffer.put(positionData, positionOffset, Const.POSITION_DATA_SIZE);
            positionOffset += Const.POSITION_DATA_SIZE;
            interleavedBuffer.put(normals, normalOffset, Const.NORMALS_DATA_SIZE);
            // Normals are the same
            interleavedBuffer.put(uvData, textureOffset, Const.TEXTURE_COORDS_DATA_SIZE);
            textureOffset += Const.TEXTURE_COORDS_DATA_SIZE;
            interleavedBuffer.put(tileXyData, tileXyOffset, Const.TILE_DATA_SIZE);
            tileXyOffset += Const.TILE_DATA_SIZE;
        }
    }
    interleavedBuffer.position(0);
    return interleavedBuffer;
}