Clipping (computer graphics)

<p>Clipping, in the context of <a href="/facts/Computer_graphics/lapBE8wv">computer graphics</a>, is a method to selectively enable or disable <a href="/facts/Rendering_(computer_graphics)/YYxfnmAq">rendering operations</a> within a defined <a href="/facts/Region_of_interest/C8k58oC5">region of interest</a>. Mathematically, clipping can be described using the terminology of <a href="/facts/Constructive_geometry/lbaHf2m7">constructive geometry</a>. A <a href="/facts/Rendering_algorithm/YYxfnmAq">rendering algorithm</a> only draws <a href="/facts/Pixel/UzwBvXBV">pixels</a> in the <a href="/facts/Intersection/hVW6QFWD">intersection</a> between the clip region and the scene model. Lines and surfaces outside the <a href="/facts/View_volume/5gXoo3Ka">view volume</a> (aka. frustum) are removed.
</p><p>Clip regions are commonly specified to improve render performance. A well-chosen clip allows the renderer to save time and energy by skipping calculations related to pixels that the user cannot see. Pixels that will be drawn are said to be within the clip region. Pixels that will not be drawn are outside the clip region. More informally, pixels that will not be drawn are said to be "clipped."
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Clipping (computer graphics) open-in-new

Clipping (computer graphics)