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modules/javafx.graphics/src/main/java/com/sun/marlin/DTransformingPathConsumer2D.java

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   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
  23  * questions.
  24  */
  25 
  26 package com.sun.marlin;
  27 
  28 
  29 import com.sun.javafx.geom.transform.BaseTransform;
  30 
  31 public final class DTransformingPathConsumer2D {
  32 
  33     DTransformingPathConsumer2D() {
  34         // used by DRendererContext
  35     }
  36 



  37     // recycled DPathConsumer2D instances from deltaTransformConsumer()
  38     private final DeltaScaleFilter     dt_DeltaScaleFilter     = new DeltaScaleFilter();
  39     private final DeltaTransformFilter dt_DeltaTransformFilter = new DeltaTransformFilter();
  40 





  41     public DPathConsumer2D deltaTransformConsumer(DPathConsumer2D out,
  42                                                  BaseTransform at)
  43     {
  44         if (at == null) {
  45             return out;
  46         }
  47         double mxx = at.getMxx();
  48         double mxy = at.getMxy();
  49         double myx = at.getMyx();
  50         double myy = at.getMyy();
  51 
  52         if (mxy == 0.0d && myx == 0.0d) {
  53             if (mxx == 1.0d && myy == 1.0d) {
  54                 return out;
  55             } else {
  56                 return dt_DeltaScaleFilter.init(out, mxx, myy);
  57             }
  58         } else {
  59             return dt_DeltaTransformFilter.init(out, mxx, mxy, myx, myy);
  60         }


  74         double mxy = at.getMxy();
  75         double myx = at.getMyx();
  76         double myy = at.getMyy();
  77 
  78         if (mxy == 0.0d && myx == 0.0d) {
  79             if (mxx == 1.0d && myy == 1.0d) {
  80                 return out;
  81             } else {
  82                 return iv_DeltaScaleFilter.init(out, 1.0d/mxx, 1.0d/myy);
  83             }
  84         } else {
  85             double det = mxx * myy - mxy * myx;
  86             return iv_DeltaTransformFilter.init(out,
  87                                                 myy / det,
  88                                                -mxy / det,
  89                                                -myx / det,
  90                                                 mxx / det);
  91         }
  92     }
  93 
  94 
  95     static final class DeltaScaleFilter implements DPathConsumer2D {
  96         private DPathConsumer2D out;
  97         private double sx, sy;
  98 
  99         DeltaScaleFilter() {}
 100 
 101         DeltaScaleFilter init(DPathConsumer2D out,
 102                               double mxx, double myy)
 103         {
 104             this.out = out;
 105             sx = mxx;
 106             sy = myy;
 107             return this; // fluent API
 108         }
 109 
 110         @Override
 111         public void moveTo(double x0, double y0) {
 112             out.moveTo(x0 * sx, y0 * sy);
 113         }
 114 


 190         public void curveTo(double x1, double y1,
 191                             double x2, double y2,
 192                             double x3, double y3)
 193         {
 194             out.curveTo(x1 * mxx + y1 * mxy,
 195                         x1 * myx + y1 * myy,
 196                         x2 * mxx + y2 * mxy,
 197                         x2 * myx + y2 * myy,
 198                         x3 * mxx + y3 * mxy,
 199                         x3 * myx + y3 * myy);
 200         }
 201 
 202         @Override
 203         public void closePath() {
 204             out.closePath();
 205         }
 206 
 207         @Override
 208         public void pathDone() {
 209             out.pathDone();










































 210         }
 211     }
 212 }


   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
  23  * questions.
  24  */
  25 
  26 package com.sun.marlin;
  27 
  28 import com.sun.javafx.geom.Path2D;
  29 import com.sun.javafx.geom.transform.BaseTransform;
  30 
  31 public final class DTransformingPathConsumer2D {
  32 
  33     DTransformingPathConsumer2D() {
  34         // used by DRendererContext
  35     }
  36 
  37     // recycled DPathConsumer2D instance from wrapPath2d()
  38     private final Path2DWrapper        wp_Path2DWrapper        = new Path2DWrapper();
  39 
  40     // recycled DPathConsumer2D instances from deltaTransformConsumer()
  41     private final DeltaScaleFilter     dt_DeltaScaleFilter     = new DeltaScaleFilter();
  42     private final DeltaTransformFilter dt_DeltaTransformFilter = new DeltaTransformFilter();
  43 
  44     public DPathConsumer2D wrapPath2d(Path2D p2d)
  45     {
  46         return wp_Path2DWrapper.init(p2d);
  47     }
  48 
  49     public DPathConsumer2D deltaTransformConsumer(DPathConsumer2D out,
  50                                                  BaseTransform at)
  51     {
  52         if (at == null) {
  53             return out;
  54         }
  55         double mxx = at.getMxx();
  56         double mxy = at.getMxy();
  57         double myx = at.getMyx();
  58         double myy = at.getMyy();
  59 
  60         if (mxy == 0.0d && myx == 0.0d) {
  61             if (mxx == 1.0d && myy == 1.0d) {
  62                 return out;
  63             } else {
  64                 return dt_DeltaScaleFilter.init(out, mxx, myy);
  65             }
  66         } else {
  67             return dt_DeltaTransformFilter.init(out, mxx, mxy, myx, myy);
  68         }


  82         double mxy = at.getMxy();
  83         double myx = at.getMyx();
  84         double myy = at.getMyy();
  85 
  86         if (mxy == 0.0d && myx == 0.0d) {
  87             if (mxx == 1.0d && myy == 1.0d) {
  88                 return out;
  89             } else {
  90                 return iv_DeltaScaleFilter.init(out, 1.0d/mxx, 1.0d/myy);
  91             }
  92         } else {
  93             double det = mxx * myy - mxy * myx;
  94             return iv_DeltaTransformFilter.init(out,
  95                                                 myy / det,
  96                                                -mxy / det,
  97                                                -myx / det,
  98                                                 mxx / det);
  99         }
 100     }
 101 

 102     static final class DeltaScaleFilter implements DPathConsumer2D {
 103         private DPathConsumer2D out;
 104         private double sx, sy;
 105 
 106         DeltaScaleFilter() {}
 107 
 108         DeltaScaleFilter init(DPathConsumer2D out,
 109                               double mxx, double myy)
 110         {
 111             this.out = out;
 112             sx = mxx;
 113             sy = myy;
 114             return this; // fluent API
 115         }
 116 
 117         @Override
 118         public void moveTo(double x0, double y0) {
 119             out.moveTo(x0 * sx, y0 * sy);
 120         }
 121 


 197         public void curveTo(double x1, double y1,
 198                             double x2, double y2,
 199                             double x3, double y3)
 200         {
 201             out.curveTo(x1 * mxx + y1 * mxy,
 202                         x1 * myx + y1 * myy,
 203                         x2 * mxx + y2 * mxy,
 204                         x2 * myx + y2 * myy,
 205                         x3 * mxx + y3 * mxy,
 206                         x3 * myx + y3 * myy);
 207         }
 208 
 209         @Override
 210         public void closePath() {
 211             out.closePath();
 212         }
 213 
 214         @Override
 215         public void pathDone() {
 216             out.pathDone();
 217         }
 218     }
 219     static final class Path2DWrapper implements DPathConsumer2D {
 220         private Path2D p2d;
 221 
 222         Path2DWrapper() {}
 223 
 224         Path2DWrapper init(Path2D p2d) {
 225             this.p2d = p2d;
 226             return this;
 227         }
 228 
 229         @Override
 230         public void moveTo(double x0, double y0) {
 231             p2d.moveTo((float)x0, (float)y0);
 232         }
 233 
 234         @Override
 235         public void lineTo(double x1, double y1) {
 236             p2d.lineTo((float)x1, (float)y1);
 237         }
 238 
 239         @Override
 240         public void closePath() {
 241             p2d.closePath();
 242         }
 243 
 244         @Override
 245         public void pathDone() {}
 246 
 247         @Override
 248         public void curveTo(double x1, double y1,
 249                             double x2, double y2,
 250                             double x3, double y3)
 251         {
 252             p2d.curveTo((float)x1, (float)y1, (float)x2, (float)y2,
 253                     (float)x3, (float)y3);
 254         }
 255 
 256         @Override
 257         public void quadTo(double x1, double y1, double x2, double y2) {
 258             p2d.quadTo((float)x1, (float)y1, (float)x2, (float)y2);
 259         }
 260     }
 261 }
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