Geometry help！
I want get tow PointArray of the Geometry at different position.
But I always get the same PointArray at different Position.
Here is parts of my program:
//I use PositionInterpolator to move the Geometry via x axis.
//and I have get the Geometry.
Geometry g = myShape.getGeometry(); //myShape is a shape3D from the .obj file
Point3f[] p3f1 = new Point3f[ 360 ];
for( int i = 0; i < 360; i ++ )
{
p3f1[ i ] = new Point3f();
}
if( g instanceof GeometryArray )
{
( ( GeometryArray ) g ).getCoordinates( 0, p3f1 );
}
//Now I'm getting tow PointArray
Point3f[] pArray1 = new Point3f[ 360 ];
Point3f[] pArray2 = new Point3f[ 360 ];
for( int i = 0; i < 306; i ++ )
{
pArray1[ i ] = p3f1[ i ];
pArray1[ i ].x = 0.2f;//set PointArray at the start position of the PositionInterpolator
pArray2[ i ] = p3f1[ i ];//get the PointArray during the moving
}
But When I change pArray1[ i ].x, the pArray2[ i ].x also changed and it also equals 0.2f.
What problem I have met?
How to solve it?
thanks!
[1161 byte] By [
pangdodo] at [2007-9-30 21:10:02]
Hi,
Both pArray1 and pArray2 actually reference p3f1 so you do the changes on p3f1!
Try to set
pArray2[i] = new Point3f(p3f1[i]);
Regards
> I want get tow PointArray of the Geometry at different
> position.
>
> But I always get the same PointArray at different
> Position.
>
> Here is parts of my program:
>
> //I use PositionInterpolator to move the Geometry via
> x axis.
> //and I have get the Geometry.
>
> Geometry g = myShape.getGeometry(); //myShape is a
> shape3D from the .obj file
>
> Point3f[] p3f1 = new Point3f[ 360 ];
> for( int i = 0; i < 360; i ++ )
> {
> p3f1[ i ] = new Point3f();
> }
>
> if( g instanceof GeometryArray )
> {
> ( ( GeometryArray ) g ).getCoordinates( 0, p3f1 );
> }
>
> //Now I'm getting tow PointArray
>
> Point3f[] pArray1 = new Point3f[ 360 ];
> Point3f[] pArray2 = new Point3f[ 360 ];
>
> for( int i = 0; i < 306; i ++ )
> {
> pArray1[ i ] = p3f1[ i ];
> pArray1[ i ].x = 0.2f;//set PointArray at the
> start position of the PositionInterpolator
>
> pArray2[ i ] = p3f1[ i ];//get the PointArray
> during the moving
>
> }
>
> But When I change pArray1[ i ].x, the pArray2[ i ].x
> also changed and it also equals 0.2f.
>
> What problem I have met?
> How to solve it?
>
> thanks!
>
You have to do the pArray2[i] = new Point3f(p3f1[i])
before you change the x.value in pArray1
OR also create a new point for pArray1 before changing the value.
> Hi,
>
> Both pArray1 and pArray2 actually reference
> p3f1 so you do the changes on p3f1!
> Try to set
> > pArray2[i] = new Point3f(p3f1[i]);
>
>
> Regards
>
>
> > I want get tow PointArray of the Geometry at
> different
> > position.
> >
> > But I always get the same PointArray at different
> > Position.
> >
> > Here is parts of my program:
> >
> > //I use PositionInterpolator to move the Geometry
> via
> > x axis.
> > //and I have get the Geometry.
> >
> > Geometry g = myShape.getGeometry(); //myShape is a
> > shape3D from the .obj file
> >
> > Point3f[] p3f1 = new Point3f[ 360 ];
> > for( int i = 0; i < 360; i ++ )
> > {
> > p3f1[ i ] = new Point3f();
> > }
> >
> > if( g instanceof GeometryArray )
> > {
> > ( ( GeometryArray ) g ).getCoordinates( 0, p3f1 );
> > }
> >
> > //Now I'm getting tow PointArray
> >
> > Point3f[] pArray1 = new Point3f[ 360 ];
> > Point3f[] pArray2 = new Point3f[ 360 ];
> >
> > for( int i = 0; i < 306; i ++ )
> > {
> > pArray1[ i ] = p3f1[ i ];
> > pArray1[ i ].x = 0.2f;//set PointArray at the
> > start position of the PositionInterpolator
> >
> > pArray2[ i ] = p3f1[ i ];//get the PointArray
> > during the moving
> >
> > }
> >
> > But When I change pArray1[ i ].x, the pArray2[ i ].x
> > also changed and it also equals 0.2f.
> >
> > What problem I have met?
> > How to solve it?
> >
> > thanks!
> >
>
Thanks a lot!Problem has solved!
