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authordoko <doko@138bc75d-0d04-0410-961f-82ee72b054a4>2007-06-03 23:18:43 +0000
committerdoko <doko@138bc75d-0d04-0410-961f-82ee72b054a4>2007-06-03 23:18:43 +0000
commit5bf762459121cc397663d22498d62d71fa179ef6 (patch)
treea9c9e7d91c484d53fe154f9285fc57325572ce50 /libjava/classpath/gnu/java/awt/java2d/ActiveEdges.java
parent6d7301dc346a198a89ac987c1008aac09f191ee6 (diff)
downloadppe42-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
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+/* 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();
+ }
+}
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