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author | doko <doko@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-06-03 23:18:43 +0000 |
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committer | doko <doko@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-06-03 23:18:43 +0000 |
commit | 5bf762459121cc397663d22498d62d71fa179ef6 (patch) | |
tree | a9c9e7d91c484d53fe154f9285fc57325572ce50 /libjava/classpath/gnu/java/awt/java2d/ActiveEdges.java | |
parent | 6d7301dc346a198a89ac987c1008aac09f191ee6 (diff) | |
download | ppe42-gcc-5bf762459121cc397663d22498d62d71fa179ef6.tar.gz ppe42-gcc-5bf762459121cc397663d22498d62d71fa179ef6.zip |
libjava/classpath/ChangeLog.gcj:
2007-05-31 Matthias Klose <doko@ubuntu.com>
* javax/management/NotificationBroadcasterSupport.java
(getNotificationInfo): Add cast.
* native/jni/qt-peer/Makefile.am (AM_CXXFLAGS): Add libstdc++ include
directories.
* native/jni/qt-peer/Makefile.in: Regenerate.
libjava/ChangeLog:
2007-06-03 Matthias Klose <doko@ubuntu.com>
* java/io/natFileWin32.cc (setFilePermissions): New (stub only).
_access: Handle EXEC query, stub only.
2007-06-03 Matthias Klose <doko@ubuntu.com>
Merged from classpath:
* gnu/java/nio/SelectorProviderImpl.java: Whitespace merge.
* java/lang/System.java(inheritedChannel): New.
* java/lang/Character.java: Remove stray`;'.
* java/net/MulticastSocket.java: Merged.
* java/text/DateFormatSymbols.java(getInstance): New, comment updates.
* java/text/Collator.java(getInstance): Merged.
* java/util/Calendar.java: New attributes ALL_STYLES, SHORT, LONG.
getDisplayName, getDisplayNames: New.
* java/util/logging/Logger.java: Merged.
* Regenerate .class and .h files.
2007-06-03 Matthias Klose <doko@ubuntu.com>
* java/io/File.java: Merge with classpath-0.95, new method
setFilePermissions, new attribute EXEC.
* java/io/natFilePosix.cc (setFilePermissions): New.
_access: Handle EXEC query.
* classpath/lib/java/io/File.class, java/io/File.h: Regenerate.
2007-06-03 Matthias Klose <doko@ubuntu.com>
Imported GNU Classpath 0.95.
* classpath/Makefile.in,
classpath/native/jni/midi-dssi/Makefile.in,
classpath/native/jni/classpath/Makefile.in,
classpath/native/jni/Makefile.in,
classpath/native/jni/gconf-peer/Makefile.in,
classpath/native/jni/java-io/Makefile.in,
classpath/native/jni/native-lib/Makefile.in,
classpath/native/jni/java-util/Makefile.in,
classpath/native/jni/midi-alsa/Makefile.in,
classpath/native/jni/java-lang/Makefile.in,
classpath/native/jni/java-nio/Makefile.in,
classpath/native/jni/java-net/Makefile.in,
classpath/native/jni/xmlj/Makefile.in,
classpath/native/jni/qt-peer/Makefile.in,
classpath/native/jni/gtk-peer/Makefile.in,
classpath/native/Makefile.in, classpath/native/jawt/Makefile.in,
classpath/native/fdlibm/Makefile.in,
classpath/native/plugin/Makefile.in,
classpath/resource/Makefile.in, classpath/scripts/Makefile.in,
classpath/tools/Makefile.in, classpath/doc/Makefile.in,
classpath/doc/api/Makefile.in, classpath/lib/Makefile.in,
classpath/external/Makefile.in, classpath/external/jsr166/Makefile.in,
classpath/external/sax/Makefile.in,
classpath/external/w3c_dom/Makefile.in,
classpath/external/relaxngDatatype/Makefile.in,
classpath/include/Makefile.in,
classpath/examples/Makefile.in: Regenerate.
* classpath/config.guess, classpath/config.sub,
classpath/ltmain.sh : Update.
* classpath/configure, classpath/depcomp, classpath/missing,
classpath/aclocal.m4, classpath/install-sh: Regenerate.
* gnu/classpath/Configuration.java (CLASSPATH_VERSION): Now 0.95.
* sources.am: Regenerate.
* Makefile.in: Regenerate.
* Update the .class files and generated CNI header files, add new
.class and generated CNI header files.
* Remove generated files for removed java source files:
classpath/gnu/java/net/BASE64.java,
classpath/gnu/java/security/util/Base64.java,
classpath/gnu/java/awt/peer/gtk/GThreadMutex.java,
classpath/gnu/java/awt/peer/gtk/GThreadNativeMethodRunner.java,
classpath/gnu/java/awt/font/autofit/Scaler.java,
classpath/gnu/classpath/jdwp/util/Value.java,
classpath/gnu/javax/net/ssl/Base64.java.
* Remove empty directories.
* Makefile.am(nat_source_files): Add natVMOperatingSystemMXBeanImpl.cc.
* java/lang/Class.java(setAccessible): Merge from classpath.
* java/util/Locale.java: Remove.
* gnu/java/lang/management/VMOperatingSystemMXBeanImpl.java,
gnu/java/lang/management/natVMOperatingSystemMXBeanImpl.cc: New.
* gcj/javaprims.h: Update class declarations.
* scripts/classes.pl: Update usage.
* HACKING: Mention to build all peers.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@125302 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libjava/classpath/gnu/java/awt/java2d/ActiveEdges.java')
-rw-r--r-- | libjava/classpath/gnu/java/awt/java2d/ActiveEdges.java | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/awt/java2d/ActiveEdges.java b/libjava/classpath/gnu/java/awt/java2d/ActiveEdges.java new file mode 100644 index 00000000000..4d1e777ccf5 --- /dev/null +++ b/libjava/classpath/gnu/java/awt/java2d/ActiveEdges.java @@ -0,0 +1,195 @@ +/* ActiveEdges.java -- A collection of active edges for scanline conversion + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.java.awt.java2d; + +/** + * A collection of active edges for scanline conversion. + */ +final class ActiveEdges +{ + + /** + * The active edges. This can contain null values at arbirary locations. + * The method #sort() packs this together. + */ + private PolyEdge[] activeEdges; + + /** + * The actual number of active edges. The array can be bigger than this + * number. + */ + private int numActiveEdges; + + /** + * Creates a new ActiveEdges object. + */ + ActiveEdges() + { + activeEdges = new PolyEdge[8]; + numActiveEdges = 0; + } + + /** + * Clears out all active edges. This is cheap as it simply resets the + * counter to 0. It does not release all references to PolyEdge instances. + */ + void clear() + { + numActiveEdges = 0; + } + + /** + * Adds the specified edge to the list of active edges. This does not yet + * sort the edges and therefore does destroy any order of the list. + * + * @param edge the edge to add + */ + void add(PolyEdge edge) + { + // Grow array when necessary. + int oldSize = activeEdges.length; + if (numActiveEdges >= oldSize) + { + int newSize = oldSize + oldSize / 4 + 1; + PolyEdge[] newEdges = new PolyEdge[newSize]; + System.arraycopy(activeEdges, 0, newEdges, 0, oldSize); + activeEdges = newEdges; + } + activeEdges[numActiveEdges] = edge; + numActiveEdges++; + } + + /** + * Intersects all active edges, sorts them according to their intersection + * points and packs the array to remove unneeded edges. This does also + * remove any edges that do not intersect the scanline (i.e. they end above + * of the scanline). + * + * @param y the scanline height + */ + void intersectSortAndPack(int n, int y) + { + // Intersect and pack in one go. + int last = 0; + PolyEdge tmp; + for (int i = 0; i < numActiveEdges; i++) + { + PolyEdge edge = activeEdges[i]; + // Clear out edge that ends above the scanline. + if (edge != null && edge.y1 >= y) + { + assert edge.y1 >= y && edge.y0 <= y : "edge must cross scanline"; + edge.intersect(n, y); + activeEdges[last] = edge; + last++; + + // Bubble up the added edge. + for (int j = last - 1; j > 0; j--) + { + if (activeEdges[j].xIntersection + < activeEdges[j - 1].xIntersection) + { + tmp = activeEdges[j]; + activeEdges[j] = activeEdges[j - 1]; + activeEdges[j - 1] = tmp; + } + else + { + // The beginning of the list is already sorted. + break; + } + } + } + } + numActiveEdges = last; + + } + + /** + * Returns the number of active edges. This is only reliable after a + * call to {@link #intersectSortAndPack(int, int)}. + * + * @return the number of active edges + */ + int getNumActiveEdges() + { + return numActiveEdges; + } + + /** + * Returns the active edge at the position <code>i</code>. + * + * @param i the index + * + * @return the active edge at the specified index + */ + PolyEdge getActiveEdge(int i) + { + return activeEdges[i]; + } + + /** + * Removes all edges that end above the specified height. + * + * @param y the cut-off height + */ + void remove(int y) + { + for (int i = 0; i < numActiveEdges; i++) + { + PolyEdge edge = activeEdges[i]; + if (edge != null && edge.y1 < y) + { + activeEdges[i] = null; + } + } + } + + public String toString() + { + StringBuilder s = new StringBuilder(); + s.append("[ActiveEdges] "); + for (int i = 0; i < numActiveEdges; i++) + { + s.append(activeEdges[i]); + s.append(','); + } + return s.toString(); + } +} |