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

Example 36 with ShortBuffer

use of java.nio.ShortBuffer in project robovm by robovm.

the class ShortBufferTest method testEquals.

public void testEquals() {
    // equal to self
    assertTrue(buf.equals(buf));
    ShortBuffer readonly = buf.asReadOnlyBuffer();
    assertTrue(buf.equals(readonly));
    ShortBuffer duplicate = buf.duplicate();
    assertTrue(buf.equals(duplicate));
    // always false, if type mismatch
    assertFalse(buf.equals(Boolean.TRUE));
    assertTrue(buf.capacity() > 5);
    buf.limit(buf.capacity()).position(0);
    readonly.limit(readonly.capacity()).position(1);
    assertFalse(buf.equals(readonly));
    buf.limit(buf.capacity() - 1).position(0);
    duplicate.limit(duplicate.capacity()).position(0);
    assertFalse(buf.equals(duplicate));
}

Example 37 with ShortBuffer

use of java.nio.ShortBuffer in project robovm by robovm.

the class ReadOnlyShortBufferTest method testPutShortBuffer.

public void testPutShortBuffer() {
    ShortBuffer other = ShortBuffer.allocate(1);
    try {
        buf.put(other);
        //$NON-NLS-1$
        fail("Should throw ReadOnlyBufferException");
    } catch (ReadOnlyBufferException e) {
    // expected
    }
    try {
        buf.put((ShortBuffer) null);
        //$NON-NLS-1$
        fail("Should throw ReadOnlyBufferException");
    } catch (ReadOnlyBufferException e) {
    // expected
    }
    try {
        buf.put(buf);
        //$NON-NLS-1$
        fail("Should throw ReadOnlyBufferException");
    } catch (ReadOnlyBufferException e) {
    // expected
    }
}

Example 38 with ShortBuffer

use of java.nio.ShortBuffer in project robovm by robovm.

the class ReadOnlyShortBufferTest method testHashCode.

public void testHashCode() {
    ShortBuffer duplicate = buf.duplicate();
    assertEquals(buf.hashCode(), duplicate.hashCode());
}

Example 39 with ShortBuffer

use of java.nio.ShortBuffer in project platform_frameworks_base by android.

the class IpUtils method checksum.

/**
     * Performs an IP checksum (used in IP header and across UDP
     * payload) on the specified portion of a ByteBuffer.  The seed
     * allows the checksum to commence with a specified value.
     */
private static int checksum(ByteBuffer buf, int seed, int start, int end) {
    int sum = seed;
    final int bufPosition = buf.position();
    // set position of original ByteBuffer, so that the ShortBuffer
    // will be correctly initialized
    buf.position(start);
    ShortBuffer shortBuf = buf.asShortBuffer();
    // re-set ByteBuffer position
    buf.position(bufPosition);
    final int numShorts = (end - start) / 2;
    for (int i = 0; i < numShorts; i++) {
        sum += intAbs(shortBuf.get(i));
    }
    start += numShorts * 2;
    // see if a singleton byte remains
    if (end != start) {
        short b = buf.get(start);
        // make it unsigned
        if (b < 0) {
            b += 256;
        }
        sum += b * 256;
    }
    sum = ((sum >> 16) & 0xFFFF) + (sum & 0xFFFF);
    sum = ((sum + ((sum >> 16) & 0xFFFF)) & 0xFFFF);
    int negated = ~sum;
    return intAbs((short) negated);
}

Example 40 with ShortBuffer

use of java.nio.ShortBuffer in project libgdx by libgdx.

the class Mesh method calculateRadiusSquared.

/** Calculates the squared radius of the bounding sphere around the specified center for the specified part.
	 * @param centerX The X coordinate of the center of the bounding sphere
	 * @param centerY The Y coordinate of the center of the bounding sphere
	 * @param centerZ The Z coordinate of the center of the bounding sphere
	 * @param offset the start index of the part.
	 * @param count the amount of indices the part contains.
	 * @return the squared radius of the bounding sphere. */
public float calculateRadiusSquared(final float centerX, final float centerY, final float centerZ, int offset, int count, final Matrix4 transform) {
    int numIndices = getNumIndices();
    if (offset < 0 || count < 1 || offset + count > numIndices)
        throw new GdxRuntimeException("Not enough indices");
    final FloatBuffer verts = vertices.getBuffer();
    final ShortBuffer index = indices.getBuffer();
    final VertexAttribute posAttrib = getVertexAttribute(Usage.Position);
    final int posoff = posAttrib.offset / 4;
    final int vertexSize = vertices.getAttributes().vertexSize / 4;
    final int end = offset + count;
    float result = 0;
    switch(posAttrib.numComponents) {
        case 1:
            for (int i = offset; i < end; i++) {
                final int idx = index.get(i) * vertexSize + posoff;
                tmpV.set(verts.get(idx), 0, 0);
                if (transform != null)
                    tmpV.mul(transform);
                final float r = tmpV.sub(centerX, centerY, centerZ).len2();
                if (r > result)
                    result = r;
            }
            break;
        case 2:
            for (int i = offset; i < end; i++) {
                final int idx = index.get(i) * vertexSize + posoff;
                tmpV.set(verts.get(idx), verts.get(idx + 1), 0);
                if (transform != null)
                    tmpV.mul(transform);
                final float r = tmpV.sub(centerX, centerY, centerZ).len2();
                if (r > result)
                    result = r;
            }
            break;
        case 3:
            for (int i = offset; i < end; i++) {
                final int idx = index.get(i) * vertexSize + posoff;
                tmpV.set(verts.get(idx), verts.get(idx + 1), verts.get(idx + 2));
                if (transform != null)
                    tmpV.mul(transform);
                final float r = tmpV.sub(centerX, centerY, centerZ).len2();
                if (r > result)
                    result = r;
            }
            break;
    }
    return result;
}