MikuMikuDance viewer

system · May 9, 2011, 12:44pm

Sorry, I wrote it for testing, and I forgot to remove it.

But MikMikuDance needs to disable diactivation for all physics.How to do it without this line?

please see https://github.com/hkrn/MMDAI/blob/master/MMDME/src/PMDRigidBody.cc line 189

system · May 9, 2011, 12:58pm

By the way, there are many codes like this:

[java]

btTransform* transA = &btTransform(*mtx1);

jmeBulletUtil::convert(env, pivotA, &transA->getOrigin());

jmeBulletUtil::convert(env, rotA, &transA->getBasis());

[/java]

Is it safe?

I think that it uses transA after destruction of it.

normen · May 9, 2011, 1:11pm

I will maybe add PhysicsRigidBody.setActivationEnabled(boolean). Just setEnabled(true) your limbs.
Yes, its a method and no callback, it should be available when it is called.

system · May 9, 2011, 1:17pm

I will maybe add PhysicsRigidBody.setActivationEnabled(boolean). Just setEnabled(true) your limbs.

Thanks.

Yes, its a method and no callback, it should be available when it is called.

But it desn’t work without my patch.

normen · May 9, 2011, 1:48pm

chototsu said:
But it desn't work without my patch.

What doesnt work? I dont get any errors, the ragdoll tests work fine for example.

system · May 9, 2011, 2:05pm

Your code:

[java]

/*

Class: com_jme3_bullet_joints_SixDofJoint
Method: createJoint
Signature: (JJLcom/jme3/math/Vector3f;Lcom/jme3/math/Matrix3f;Lcom/jme3/math/Vector3f;Lcom/jme3/math/Matrix3f;Z)J

/

JNIEXPORT jlong JNICALL Java_com_jme3_bullet_joints_SixDofJoint_createJoint

(JNIEnv * env, jobject object, jlong bodyIdA, jlong bodyIdB, jobject pivotA, jobject rotA, jobject

pivotB, jobject rotB, jboolean useLinearReferenceFrameA) {

jmeClasses::initJavaClasses(env);

btRigidBody bodyA = (btRigidBody*) bodyIdA;

btRigidBody* bodyB = (btRigidBody*) bodyIdB;

btMatrix3x3* mtx1 = &btMatrix3x3();

btMatrix3x3* mtx2 = &btMatrix3x3();

btTransform* transA = &btTransform(mtx1);

jmeBulletUtil::convert(env, pivotA, &transA->getOrigin());

jmeBulletUtil::convert(env, rotA, &transA->getBasis());

btTransform transB = &btTransform(*mtx2);

jmeBulletUtil::convert(env, pivotB, &transB->getOrigin());

jmeBulletUtil::convert(env, rotB, &transB->getBasis());

[/java]

The transA and transB points same address and it doesn’t work.

system · May 9, 2011, 2:10pm

The life of transA is end before line 15 and compiler reuses the memory for transB at line 17.

system · May 9, 2011, 2:15pm

for example: please test this code:

[java]

#include <stdio.h>

class Foo {

public:

char m_name;

Foo(char name) {

m_name = name;

}

~Foo(){

printf(“destructor %sn”, m_name);

}

};

int main(int argc, char argv) {

Foo p1 = &Foo(“foo1”);

Foo p2 = &Foo(“foo2”);

printf("%x %xn", p1, p2);

return 0;

}

[/java]

[java]

$ gcc Test.cpp

test.cpp: In function `int main(int, char)’:

test.cpp:13: warning: taking address of temporary

test.cpp:14: warning: taking address of temporary

$ ./a

destructor foo1

destructor foo2

22cc90 22cc90

[/java]

normen · May 9, 2011, 3:03pm

chototsu said:
The life of transA is end before line 15 and compiler reuses the memory for transB at line 17.

Hm, ok.. But why does it do that? I am friggin using that variable a line later?? Would it work when I'd use not a pointer but the class as variable type?

system · May 9, 2011, 3:13pm

Your code:

[java]

/*

Class: com_jme3_bullet_joints_SixDofJoint
Method: createJoint
Signature: (JJLcom/jme3/math/Vector3f;Lcom/jme3/math/Matrix3f;Lcom/jme3/math/Vector3f;Lcom/jme3/math/Matrix3f;Z)J

/

JNIEXPORT jlong JNICALL Java_com_jme3_bullet_joints_SixDofJoint_createJoint

(JNIEnv * env, jobject object, jlong bodyIdA, jlong bodyIdB, jobject pivotA, jobject rotA, jobject pivotB, jobject rotB, jboolean useLinearReferenceFrameA) {

jmeClasses::initJavaClasses(env);

btRigidBody bodyA = (btRigidBody*) bodyIdA;

btRigidBody* bodyB = (btRigidBody*) bodyIdB;

btMatrix3x3* mtx1 = &btMatrix3x3();

btMatrix3x3* mtx2 = &btMatrix3x3();

btTransform* transA = &btTransform(mtx1);

jmeBulletUtil::convert(env, pivotA, &transA->getOrigin());

jmeBulletUtil::convert(env, rotA, &transA->getBasis());

btTransform transB = &btTransform(mtx2);

jmeBulletUtil::convert(env, pivotB, &transB->getOrigin());

jmeBulletUtil::convert(env, rotB, &transB->getBasis());

btGeneric6DofConstraint joint = new btGeneric6DofConstraint(*bodyA, *bodyB, *transA, *transB, useLinearReferenceFrameA);

return (long)joint;

}

[/java]

  btGeneric6DofConstraint* joint = new btGeneric6DofConstraint(*bodyA, *bodyB, *transA, *transB, useLinearReferenceFrameA);<br />

transA and transB points same address, and transforms of this joint become wrong values.

I chaned it:

[java]

JNIEXPORT jlong JNICALL Java_com_jme3_bullet_joints_SixDofJoint_createJoint

(JNIEnv * env, jobject object, jlong bodyIdA, jlong bodyIdB, jobject pivotA, jobject rotA, jobject pivotB, jobject rotB, jboolean useLinearReferenceFrameA) {

jmeClasses::initJavaClasses(env);

btRigidBody* bodyA = (btRigidBody*) bodyIdA;

btRigidBody* bodyB = (btRigidBody*) bodyIdB;

btMatrix3x3* mtx1 = &btMatrix3x3();

btMatrix3x3* mtx2 = &btMatrix3x3();

btTransform transA;

jmeBulletUtil::convert(env, pivotA, &transA.getOrigin());

jmeBulletUtil::convert(env, rotA, &transA.getBasis());

btTransform transB;

jmeBulletUtil::convert(env, pivotB, &transB.getOrigin());

jmeBulletUtil::convert(env, rotB, &transB.getBasis());

btGeneric6DofConstraint* joint = new btGeneric6DofConstraint(*bodyA, *bodyB, transA, transB, useLinearReferenceFrameA);

return (long)joint;

}

[/java]

normen · May 9, 2011, 3:24pm

Guess that was a yes. Thanks.

system · May 9, 2011, 3:26pm

~~Your code (only revert function:JNICALL Java_com_jme3_bullet_joints_SixDofJoint_createJoint)~~

What doesnt work? I dont get any errors, the ragdoll tests work fine for example.

When I don’t apply my patch, my MikuMikuDance become like this:

http://chototsumoushinp.dip.jp/miku/souko/test3/pantsu.png

normen · May 9, 2011, 3:27pm

Thats not my code, thats your japanese doll ^^

system · May 9, 2011, 3:52pm

When I tried to run on Vista 64bit,I got an error.

Exception in thread “main” java.lang.UnsatisfiedLinkError: C:UsersxxxDocumentsjMonkeyProjectsJmeTests3bulletjme.dll: Can’t find dependent libraries

at java.lang.ClassLoader$NativeLibrary.load(Native Method)

at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1807)

at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1703)

at java.lang.Runtime.load0(Runtime.java:770)

at java.lang.System.load(System.java:1003)

at com.jme3.system.Natives.extractNativeLib(Natives.java:98)

at com.jme3.system.Natives.extractNativeLibs(Natives.java:181)

at com.jme3.system.JmeSystem.initialize(JmeSystem.java:364)

at com.jme3.system.JmeSystem.newContext(JmeSystem.java:282)

at com.jme3.app.Application.start(Application.java:325)

at com.jme3.app.Application.start(Application.java:307)

at com.jme3.app.SimpleApplication.start(SimpleApplication.java:129)

at jme3test.bullet.TestBrickWall.main(TestBrickWall.java:83)

Java Result: 1

How do I use bulletjme.dll?

What dll do I need?

normen · May 9, 2011, 3:55pm

Theres only a dll for 32bit windows at the moment (as stated in the release post) see the thread here for the ongoing discussion about compiling under 64bit windows. Basically if you get it to compile, send us the updated build script.

Momoko_Fan · May 10, 2011, 12:25am

I deleted the 32 bit DLL because it requires MinGW to be installed on the system, so now everything should work fine as long as you update from SVN or use the latest nightly

system · May 10, 2011, 12:33am

Hi.

I succeeded to run my MikuMIkuDance viewer with native bullet both Windows(32/64) and OpenSolaris x86!

Java Web Start is here.

http://chototsumoushinp.dip.jp/miku/souko/test4/

Thanks.

http://chototsumoushinp.dip.jp/miku/souko/test4/nativebullet.png

system · May 10, 2011, 2:20pm

Hi.

I uploaded native bullet binary.

native module

http://chototsumoushinp.dip.jp/miku/souko/test4/native_bullet_chototsu.jar

java classes

http://chototsumoushinp.dip.jp/miku/souko/test4/native_bullet_chototsu_java.jar

native_bullet.chototsu.jar:

windows/bulletjme.dll

Windows 32bit DLL. I linked libgcc_s statically and it can run both Windows32/64 platform.

solaris/libbulletjme.so

OpenSolaris x86/32 library.

Thanks.

normen · May 10, 2011, 2:26pm

Can you please detail how you compiled the windows 64bit binaries and post patches for the existing build files etc.?

system · May 10, 2011, 3:06pm

I added build.xml:

[xml]

<linkerarg value="-static"/>

[/xml]