Away3D Forum Copy3x3 Matrix

Copy3x3 Matrix Software: Away3D 4.x

John Brookes, Moderator Posted: 06 December 2011 03:06 PM Total Posts: 732 Just wondering if there is an easier way? `public function copy3x3(copyTo:Matrix3D, copyFrom:Matrix3D ):void { var ct:Vector.<Number> = copyTo.rawData var cf:Vector.<Number> = copyFrom.rawData ct[0] = cf[0]; ct[4] = cf[4]; ct[8] = cf[8]; ct[1] = cf[1]; ct[5] = cf[5]; ct[9] = cf[9]; ct[2] = cf[2]; ct[6] = cf[6]; ct[10] = cf[10]; copyTo.copyRawDataFrom(ct); }` use it for things like parent.roll(1) copy3x3(childMesh.transform, parent.inverseSceneTransform)
Somokon, Member Posted: 06 December 2011 07:31 PM Total Posts: 75 [ # 1 ] `parent.inverseSceneTransform.copyToMatrix3D(childMesh.transform)` should work.
John Brookes, Moderator Posted: 06 December 2011 08:11 PM Total Posts: 732 [ # 2 ] No theres a difference, yours copies the whole matrix Basically that above leaves the position info intact. so even if the parent rotates an offset child will remain level and keep its offset eg pivot = new ObjectContainer3D(); scene.addChild(pivot); c = new Cube(new ColorMaterial(0xff0000), 500, 100, 100); c.x = 500 pivot.addChild(c); //render pivot.roll(0.5) pivot.yaw( -1) pivot.pitch(0.3) copy3x3(c.transform,pivot.inverseSceneTransform)
Somokon, Member Posted: 06 December 2011 09:15 PM Total Posts: 75 [ # 3 ] Ah, I thought you were copying the whole matrix, I see I didn’t read carefully enough. You could use the recompose/decompose methods of the Matrix3D class but it’s not really any different from what you are doing now.

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