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/*
* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.pisces;
public final class Transform6 {
public int m00, m01, m10, m11;
public int m02, m12;
public Transform6() {
this(1 << 16, 0, 0, 1 << 16, 0, 0);
}
public Transform6(int m00, int m01,
int m10, int m11,
int m02, int m12)
{
initialize();
this.m00 = m00;
this.m01 = m01;
this.m10 = m10;
this.m11 = m11;
this.m02 = m02;
this.m12 = m12;
}
public Transform6(Transform6 t) {
this(t.m00, t.m01, t.m10, t.m11, t.m02, t.m12);
}
public void postMultiply(Transform6 t) {
long _m00 = ((long)m00*t.m00 + (long)m01*t.m10) >> 16;
long _m01 = ((long)m00*t.m01 + (long)m01*t.m11) >> 16;
long _m10 = ((long)m10*t.m00 + (long)m11*t.m10) >> 16;
long _m11 = ((long)m10*t.m01 + (long)m11*t.m11) >> 16;
long _m02 = (((long)m02 << 16) +
(long)m00*t.m02 + (long)m01*t.m12) >> 16;
long _m12 = (((long)m12 << 16) +
(long)m10*t.m02 + (long)m11*t.m12) >> 16;
this.m00 = (int)_m00;
this.m01 = (int)_m01;
this.m02 = (int)_m02;
this.m10 = (int)_m10;
this.m11 = (int)_m11;
this.m12 = (int)_m12;
}
public Transform6 inverse() {
float fm00 = m00/65536.0f;
float fm01 = m01/65536.0f;
float fm02 = m02/65536.0f;
float fm10 = m10/65536.0f;
float fm11 = m11/65536.0f;
float fm12 = m12/65536.0f;
float fdet = fm00*fm11 - fm01*fm10;
float fa00 = fm11/fdet;
float fa01 = -fm01/fdet;
float fa10 = -fm10/fdet;
float fa11 = fm00/fdet;
float fa02 = (fm01*fm12 - fm02*fm11)/fdet;
float fa12 = (fm02*fm10 - fm00*fm12)/fdet;
int a00 = (int)(fa00*65536.0);
int a01 = (int)(fa01*65536.0f);
int a10 = (int)(fa10*65536.0f);
int a11 = (int)(fa11*65536.0f);
int a02 = (int)(fa02*65536.0f);
int a12 = (int)(fa12*65536.0f);
return new Transform6(a00, a01, a10, a11, a02, a12);
}
public boolean isIdentity() {
return (m00 == 1 << 16 && m01 == 0 &&
m10 == 0 && m11 == 1 << 16 &&
m02 == 0 && m12 == 0);
}
/**
* Sets this transform to a copy of the transform in the specified
* Transform6 object.
*
* @param Tx
* the Transform6 object from which to copy the
* transform
*/
public Transform6 setTransform(Transform6 Tx) {
this.m00 = Tx.m00;
this.m10 = Tx.m10;
this.m01 = Tx.m01;
this.m11 = Tx.m11;
this.m02 = Tx.m02;
this.m12 = Tx.m12;
return this;
}
public String toString() {
return "Transform6[" +
"m00=" + (m00/65536.0) + ", " +
"m01=" + (m01/65536.0) + ", " +
"m02=" + (m02/65536.0) + ", " +
"m10=" + (m10/65536.0) + ", " +
"m11=" + (m11/65536.0) + ", " +
"m12=" + (m12/65536.0) + "]";
}
private native void initialize();
}
