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One reason for this is that the frame is often visually too small for its contents |
One reason for this is that the frame is often visually too small for its contents |
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to yield a balanced graphical design. For example, |
to yield a balanced graphical design. For example, |
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211 |
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Also, because the frame moves differently from its content, it is an extra ``object'' |
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that the user's visual system must track. |
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Additionally, if looking at ``printed matter'' through the viewport, |
Additionally, if looking at ``printed matter'' through the viewport, |
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the frame outside the canvas and graphical frames inside the canvas can make the display |
the frame outside the canvas and graphical frames inside the canvas can make the display |
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much less clear. |
much less clear. |
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The torn edge separates itself visually from the content, alleviating |
The torn edge separates itself visually from the content, alleviating |
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the visual tension... |
the visual tension... |
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Need to maintain illusion: ``we see a piece of the canvas'', not ``we see the canvas through |
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a hole''. |
223 |
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If edge does not ripple, claustrophobia comes back! Again, shaped thing PLACED on top of canvas, |
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not part of canvas! |
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226 |
The irregularity of the edge allows a some of the context of the viewport to be partially |
The irregularity of the edge allows a some of the context of the viewport to be partially |
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seen. |
seen. |
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231 |
Fourier viewpoint |
Fourier viewpoint |
232 |
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If edge does not ripple, claustrophobia comes back! Again, shaped thing PLACED on top of canvas, |
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not part of canvas! |
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From a purely physical viewpoint the tearout is not really |
From a purely physical viewpoint the tearout is not really |
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a good metaphor\cite{kuhn91formalization}: |
a good metaphor\cite{kuhn91formalization}: |
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a real torn piece of paper cannot change the place from where it is torn, with the edges rippling etc. |
a real torn piece of paper cannot change the place from where it is torn, with the edges rippling etc. |