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XML Forms Data Format (XFDF) Specification - Adobe Partners

XML Forms Data Format (XFDF) Specification - Adobe Partners

XML Forms Data Format (XFDF) Specification - Adobe Partners

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Appendix: <strong>XFDF</strong> Definitions for Comments on 3D or Rich Media Annotations<br />

<strong>XML</strong> <strong>Forms</strong> <strong>Data</strong> <strong>Format</strong> <strong>Specification</strong> cameraxform 105<br />

cameraxform<br />

The cameraxform tag defines a 12 element 3D transformation matrix that specifies the position and<br />

orientation of the camera in world coordinates.<br />

Content model<br />

A list of 12 doubles.<br />

Attributes<br />

None.<br />

u3dmatrixsource<br />

The u3dmatrixsource tag defines the name of a node in the U3D scene graph that contains a view<br />

transformation.<br />

Content model<br />

Text String.<br />

Attributes<br />

None.<br />

targetdistance<br />

The targetdistance tag defines a non-negative number indicating a distance in the camera coordinate<br />

system along the z-axis to the center of orbit for this view.<br />

Content model<br />

Double.<br />

Attributes<br />

None.<br />

View Projection Related Elements<br />

projection<br />

The projection tag is a container whose entries define the mapping of 3D camera coordinates onto the<br />

target coordinate system of the annotation.<br />

Content model<br />

((fieldofview & (scalevalue | scaletype) ) | (viewplanesize & scaletype))

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