Hello Dave,
From your post, my understanding on this issue is: you want to know the
meaning of "bounding box" and how the nodes such as <p:blipFill> work. If
I'm off base, please feel free to let me know.
The bounding box is represented by specifying an offset in x and y
(attributes x and y of a
ff) and extents in x and y (attributes cx and cy
of a:ext, both of which must be greater than or equal to zero). The upper
left corner of the bounding box is located at the offset, and the lower
right corner of the bounding box is located at the offset plus extent. It
is an invisible box defining the edges of an item.
For instance, the following code defines a bounding box, whose width is
1200000emu, height is 1000000, at the position (3200400, 1600200).
<p:sp>
<p:spPr>
<a:xfrm>
<a
ff x="3200400" y="1600200"/>
<a:ext cx="1200000" cy="1000000"/>
</a:xfrm>
</p:spPr>
</p:sp>
The nodes, such as <p:blipFill> are relative to its bounding box. They use
percentage-based position coordinates.
Please let me know if you have any other concerns, or need anything else.
Sincerely,
Jialiang Ge (
[email protected], remove 'online.')
Microsoft Online Community Support
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