hharrison / vecmath Goto Github PK
View Code? Open in Web Editor NEWFork of the javax.vecmath package
License: GNU General Public License v2.0
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saem dscho miho ncollier minilo71 codetaylor johnnyo bmccutchon linghushaoxia kephale scijava rkost irenexu199 philjord antoxaramz pascal25565 gsimard rpax zhn17 murrellrr victorhantelmann dromozoa jrecursive softwareboss hellblazer matrix2021 thedarksword hanselkan wrailway iknova kansassamurai christopherchan1 andrewthomas299792 sathonay lm165678 nay-cat jzy3d antonfire tekkimariani ilyriadz 88070173 csabitube haniklz pabloffdevvecmath's Issues
Java 10 compatibility?
We are struggling to use vecmath with Java 9 and Java 10.
The issue that we see is:
BUILD SUCCESSFUL
Total time: 3 seconds
Exception in thread "main" java.lang.NoClassDefFoundError: javax/vecmath/Tuple3d
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:374)
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:56)
Caused by: java.lang.ClassNotFoundException: javax.vecmath.Tuple3d
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:466)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:566)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499)
... 3 more
Exception in thread "main" java.lang.NoClassDefFoundError: javax/vecmath/Tuple3d
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:374)
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:56)
Caused by: java.lang.ClassNotFoundException: javax.vecmath.Tuple3d
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:466)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:566)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499)
... 3 more
This even happens when I recompile vecmath from source in Java 10 and copy the jar over.
I have to use this patch:
diff --git a/build.xml b/build.xml
index da02748..9a60efa 100644
--- a/build.xml
+++ b/build.xml
@@ -22,7 +22,7 @@
<mkdir dir="${class.dir}"/>
<javac srcdir="${src.dir}" destdir="${class.dir}"
- source="1.5" target="1.5"
+ source="1.8" target="1.8"
debug="true"
debuglevel="lines,source"
deprecation="on"
ant compile
ant jar
cp build/jars/vecmath.jar ../wherever
Is this a known issue?
One Tuple class to rule them all
I'd like to be able to write methods like this:
public static <T> Tuple<T> average(Tuple<T>... tuples) {...rather than writing multiple methods to handle the different types of Tuples.
This could be accomplished by declaring a new Tuple class that Tuple3d, Tuple2f, etc. will extend, like so:
public class Tuple<T extends Tuple<T>> {And in the extending classes:
public class Tuple3f extends Tuple<Tuple3f> {If you like the idea, I might fork the project and work on it myself.
Issue with Matrix4f#get(Quat4f), Matrix4d#get(Quat4f) and probably Matrix4d#get(Quat4d)
There is an issue where Matrix4f#get(Quat4f) will returns NaN as the quaternion. The issue is related to the ww calculation that can ends up with a negative value. This situation was taken care by the if statement using a ternary operator but not by the Math.sqrt juste below, where the code passes the ww value without consideration for possible negative values.
Simply replacing Math.sqrt(ww) by Math.sqrt(Math.abs(ww)) solved the issue. Even though the get didn't return exactly the same quaternion, it returned an equivalent such as applying both quaternion to the same vector will return the same transformed vector.
To test the issue:
import javax.vecmath.Matrix4d;
import javax.vecmath.Matrix4f;
import javax.vecmath.Quat4f;
import javax.vecmath.Vector3d;
import javax.vecmath.Vector3f;
public class Test {
public static void main(String args[]) {
testBogus(new Quat4f(0.6464f, -0.0189f, 0.76269996f, 0.0002f));
testBogusDouble(new Quat4f(0.6464f, -0.0189f, 0.76269996f, 0.0002f));
}
public static void testBogus(Quat4f q) {
Vector3f v = new Vector3f(1,0,0);
Quat4f qt = new Quat4f();
Quat4f n = new Quat4f(q);
Matrix4f pose = new Matrix4f();
n.normalize();
pose.set(n);
pose.transform(v);
pose.get(qt);
// pose.transform returns a vector but qt is now NaN
System.out.println(qt + " " + v);
}
public static void testBogusDouble(Quat4f q) {
Vector3d v = new Vector3d(1,0,0);
Quat4f qt = new Quat4f();
Quat4f n = new Quat4f(q);
Matrix4d pose = new Matrix4d();
n.normalize();
pose.set(n);
pose.transform(v);
pose.get(qt);
// pose.transform returns a vector but qt is now NaN
System.out.println(qt + " " + v);
}
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