Hi Anders:
>X-Originating-IP: [137.222.217.98]
>Mime-Version: 1.0
>Date: Tue, 21 Mar 2000 10:32:46 CET
>From: Anders Breivik <[EMAIL PROTECTED]>
>Subject: Re: [JAVA3D] cloneTree and TCBSplinePathInterpolator
>Comments: To: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>
>Hello Kelvin
>
>Thanks for your reply!
>
>I'm not sure how to access the "core" TCBSplinePathInterpolator.java.
>I know this file is accessable from my
>..\jdk1.2\src\com\sun\j3d\utils\behaviors\interpolators directory, but
>changing this file and compiling it (in this directory) does not change
>anything.
>
It is because by default, JVM will use the .jar files
under
\jdk\jre\lib\ext\j3dutils.jar
(or \jdk\lib\ext\j3dutils.jar depending of installation)
So the correct way is to manually replace the
TCBSplinePathInterpolator.class
file inside j3dutils.jar. (use "man jar" to see the usage)
Note that setting classpath to another directory which contains
TCBSplinePathInterpolator.class did not overwrite the default
unless j3dutils.jar is removed from the default java extension
directory (i.e. \jdk\jre\lib\ext\)
- Kelvin
-------------------
Java 3D Team
Sun Microsystems Inc.
>Could you give me some more pointers on how to proceed?
>
>Regards
>Anders
>
>
>
>>From: Kelvin Chung <[EMAIL PROTECTED]>
>>Reply-To: Kelvin Chung <[EMAIL PROTECTED]>
>>To: [EMAIL PROTECTED]
>>Subject: Re: [JAVA3D] cloneTree and TCBSplinePathInterpolator !!!!
>>Date: Mon, 20 Mar 2000 11:13:35 -0800
>>
>>Hi Anders:
>>
>> The class RotPosScaleTCBSplinePathInterpolator
>>
>>fail to duplicate the two attributes
>>
>>Alpha alpha, TCBKeyFrame keys[] of its parent class
>>
>> TCBSplinePathInterpolator
>>
>>since the parent class did not implement
>>
>> public void duplicateNode(Node originalNode, boolean forceDuplicate)
>>
>>
>>To fix the problem,
>>
>>
>>Please add the following function in TCBSplinePathInterpolator.java
>>
>>
>> public void duplicateNode(Node originalNode, boolean forceDuplicate) {
>> super.duplicateNode(originalNode, forceDuplicate);
>> TCBSplinePathInterpolator originalSpline =
>>(TCBSplinePathInterpolator)
>>originalNode;
>> setAlpha(originalSpline.getAlpha());
>> keysLength = originalSpline.keysLength;
>> keyFrames = new TCBKeyFrame[keysLength];
>> System.arraycopy(originalSpline.keyFrames, 0,
>> keyFrames, 0, keysLength);
>> }
>>
>>
>>(You can find the source code of j3d utility in the distribution)
>>
>>
>>This bug will be fix in FCS version (but not in the upcoming v1.2 beta2).
>>
>>Thanks for your bug report.
>>
>>- Kelvin
>>
>>-----------
>>Java 3D Team
>>Sun Microsystems Inc.
>>
>>
>> >X-Originating-IP: [137.222.217.98]
>> >Mime-Version: 1.0
>> >Date: Sat, 18 Mar 2000 18:32:39 CET
>> >From: Anders Breivik <[EMAIL PROTECTED]>
>> >Subject: [JAVA3D] cloneTree and TCBSplinePathInterpolator !!!!
>> >To: [EMAIL PROTECTED]
>> >
>> >Hello everyone!
>> >
>> >I've got a java3d problem which really starts to annoy me, can anyone
>>please
>> >help me with the following:
>> >
>> >I've got a scene with a number of objects. Some of these objects have
>> >assosiated interpolators (RotPosScaleTCBSplinePathInterpolator)
>> >which create animations. The scene is loaded from lightwave (using
>> >lw3dLoader) which creates a BranchGroup representing the entire scene.
>> >I've used cloneTree to make a copy of this BranchGroup. (I whish to do
>>this
>> >because I do not want to reload the entire scene each time my game is
>> >restarted.) The problem is that the cloned branchgroup does NOT contain
>>the
>> >TCBKeyFrame data which makes TCBSplinePathInterpolator and
>> >RotPosScaleTCBSplinePathInterpolator work! The game starts up, but no
>> >objects in the scene are moving. It then gives a NullPointerException
>> >because the TBCKeyFrame array kontaines no data - no frames! Whats going
>> >on????? Am I missing something important or is this a BUG?
>> >
>> >I tried to work around this by accessing the TCBKeyFrame field
>>'keyFrames'
>> >but it is protected wihtin the class TCBSplinePathInterpolator
>> >
>> >Help, Help... What should I do?
>> >
>> >
>> >Regards
>> >Anders
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >______________________________________________________
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