Nikolai,
It seems your test code shows an issue with the set() method of Transform3D
rather than an issue with normalizeCP(). According to the javadoc for
Transform3D, set() doesn't copy the scale:
public final void set(Transform3D t1)
Sets the matrix, type, and state of this transform to the matrix, type,
and state of transform t1.
I checked it with JBuilder, and it does indeed do only what's advertised.
I don't know if normalizeCP() does all of what it's supposed to do, but it
appears not to change the scale, as the javadoc claims and your code shows.
Chet Urata
--- "Nikolai V. Chr." <[EMAIL PROTECTED]> wrote:
> import javax.media.j3d.*;
> import javax.vecmath.*;
>
> public class scaleTest {
>
> public scaleTest () {
> }
>
> public static void main (String[] args) {
> Transform3D t1 = new Transform3D();
> Transform3D t2 = new Transform3D();
>
> Vector3d s1 = new Vector3d(1.0,1.0,3.0);
> Vector3d s2 = new Vector3d();
>
> t1.set(new AxisAngle4d(0,1,0,1.57));
>
> t1.setScale (s1);
> t1.normalizeCP ();
>
> t2.set(t1); // even if normalizeCP is flawed this
> should make t1==t2
> t1.getScale (s1);
> t2.getScale (s2);
>
> System.out.println(s1+" == "+s2);
> }
> }
>
>
> Expected Output:
>
> (1.0, 1.0, 3.0) == (1.0, 1.0, 3.0)
>
> Actual Output:
>
> (1.0, 1.0, 3.0) == (2.9999991544849074, 1.0, 1.0000025365417038)
>
>
> Why normalizeCP() is important when we have normalize():
>
> Because normalize() also fails, see bug 4751283
> "Transform3D.normalize()
> and Matrix4d.get(Matrix3d) permute matrix columns.":
>
http://archives.java.sun.com/cgi-bin/wa?A2=ind0209&L=java3d-interest&D=0&I=-
3&P=30861
>
> So I am left with no working normalize method?
>
> I will be grateful for any code suggestions able to cope with
> non-uniform scales.
>
>
> Btw. Mark Hood's "conditionScale" doesn't always work, many times
> AFFINE
> transforms are still AFFINE after running it.
>
> Btw2. Rather strange Sun has removed bug 4751283 from the BugParade.
> Does that mean they regard it as closed?
>
>
>
>
>
> Regards
> Nikolai
>
>
> ----------------------------------------------
> Nikolai V. Christensen, Computer Engineer,
> Simulation and Training department
> IFAD, Forskerparken 10A, DK-5230 Odense M
> Denmark, EU
> Phone: +45 63 15 71 31 Fax: +45 65 93 29 99
> WWWeb: http://www.ifad.dk
> e-mail: [EMAIL PROTECTED]
> ----------------------------------------------
>
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