1 /*
   2  * Copyright (c) 1996, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any

1327             m12 = ty + m12;
1328             if (m02 == 0.0 && m12 == 0.0) {
1329                 state = APPLY_IDENTITY;
1330                 type = TYPE_IDENTITY;
1331             }
1332             return;
1333         case (APPLY_IDENTITY):
1334             m02 = tx;
1335             m12 = ty;
1336             if (tx != 0.0 || ty != 0.0) {
1337                 state = APPLY_TRANSLATE;
1338                 type = TYPE_TRANSLATION;
1339             }
1340             return;
1341         }
1342     }
1343 
1344     // Utility methods to optimize rotate methods.
1345     // These tables translate the flags during predictable quadrant
1346     // rotations where the shear and scale values are swapped and negated.
1347     private static final int rot90conversion[] = {
1348         /* IDENTITY => */        APPLY_SHEAR,
1349         /* TRANSLATE (TR) => */  APPLY_SHEAR | APPLY_TRANSLATE,
1350         /* SCALE (SC) => */      APPLY_SHEAR,
1351         /* SC | TR => */         APPLY_SHEAR | APPLY_TRANSLATE,
1352         /* SHEAR (SH) => */      APPLY_SCALE,
1353         /* SH | TR => */         APPLY_SCALE | APPLY_TRANSLATE,
1354         /* SH | SC => */         APPLY_SHEAR | APPLY_SCALE,
1355         /* SH | SC | TR => */    APPLY_SHEAR | APPLY_SCALE | APPLY_TRANSLATE,
1356     };
1357     private void rotate90() {
1358         double M0 = m00;
1359         m00 = m01;
1360         m01 = -M0;
1361         M0 = m10;
1362         m10 = m11;
1363         m11 = -M0;
1364         int state = rot90conversion[this.state];
1365         if ((state & (APPLY_SHEAR | APPLY_SCALE)) == APPLY_SCALE &&
1366             m00 == 1.0 && m11 == 1.0)
1367         {

   1 /*
   2  * Copyright (c) 1996, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any

1327             m12 = ty + m12;
1328             if (m02 == 0.0 && m12 == 0.0) {
1329                 state = APPLY_IDENTITY;
1330                 type = TYPE_IDENTITY;
1331             }
1332             return;
1333         case (APPLY_IDENTITY):
1334             m02 = tx;
1335             m12 = ty;
1336             if (tx != 0.0 || ty != 0.0) {
1337                 state = APPLY_TRANSLATE;
1338                 type = TYPE_TRANSLATION;
1339             }
1340             return;
1341         }
1342     }
1343 
1344     // Utility methods to optimize rotate methods.
1345     // These tables translate the flags during predictable quadrant
1346     // rotations where the shear and scale values are swapped and negated.
1347     private static final int[] rot90conversion = {
1348         /* IDENTITY => */        APPLY_SHEAR,
1349         /* TRANSLATE (TR) => */  APPLY_SHEAR | APPLY_TRANSLATE,
1350         /* SCALE (SC) => */      APPLY_SHEAR,
1351         /* SC | TR => */         APPLY_SHEAR | APPLY_TRANSLATE,
1352         /* SHEAR (SH) => */      APPLY_SCALE,
1353         /* SH | TR => */         APPLY_SCALE | APPLY_TRANSLATE,
1354         /* SH | SC => */         APPLY_SHEAR | APPLY_SCALE,
1355         /* SH | SC | TR => */    APPLY_SHEAR | APPLY_SCALE | APPLY_TRANSLATE,
1356     };
1357     private void rotate90() {
1358         double M0 = m00;
1359         m00 = m01;
1360         m01 = -M0;
1361         M0 = m10;
1362         m10 = m11;
1363         m11 = -M0;
1364         int state = rot90conversion[this.state];
1365         if ((state & (APPLY_SHEAR | APPLY_SCALE)) == APPLY_SCALE &&
1366             m00 == 1.0 && m11 == 1.0)
1367         {