pike.git/
src/
modules/
Image/
layers.c
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2001-07-16
2001-07-16 23:49:00 by Martin Nilsson <mani@lysator.liu.se>
d02899359811d3c0bd2f04afbae22808874f53e1 (
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Branch:
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HTML complient dl-list.
Rev: src/modules/Image/layers.c:1.70
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/* **! module Image **! note
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**! $Id: layers.c,v 1.
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**! $Id: layers.c,v 1.
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**! class Layer **! see also: layers **!
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**! **! <add_appendix name="layers" title="Image.Layer modes"> **! <dl compact>
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**! <dt><i>The variables in the expression:</i>
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**! <dt>L<dd><i>The active layer</i>
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**! <dt>S<dd><i>The source layer (the sum of the layers below)</i>
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**! <dt>D<dd><i>The destintion layer (the result)</i>
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**! <dt>Xrgb<dd><i>Layer red (<b>Xr</b>), green (<b>Xg</b>) or blue channel (<b>Xb</b>) </i>
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**! <dt>Xhsv<dd><i>Layer hue (<b>Xh</b>), saturation (<b>Xs</b>) or value channel (<b>Xv</b>) (virtual channels)</i>
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**! <dt>Xhls<dd><i>Layer hue (<b>Xh</b>), lightness channel (<b>Xl</b>) or saturation (<b>Xs</b>) (virtual channels)</i>
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**! <dt>aX<dd><i>Layer alpha, channel in layer alpha</i>
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**! <dt><i>The variables in the expression:</i>
</dt>
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**! <dt>L<
/dt><
dd><i>The active layer</i>
</dd>
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**! <dt>S<
/dt><
dd><i>The source layer (the sum of the layers below)</i>
</dd>
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**! <dt>D<
/dt><
dd><i>The destintion layer (the result)</i>
</dd>
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**! <dt>Xrgb<
/dt><
dd><i>Layer red (<b>Xr</b>), green (<b>Xg</b>) or blue channel (<b>Xb</b>) </i>
</dd>
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**! <dt>Xhsv<
/dt><
dd><i>Layer hue (<b>Xh</b>), saturation (<b>Xs</b>) or value channel (<b>Xv</b>) (virtual channels)</i>
</dd>
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**! <dt>Xhls<
/dt><
dd><i>Layer hue (<b>Xh</b>), lightness channel (<b>Xl</b>) or saturation (<b>Xs</b>) (virtual channels)</i>
</dd>
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**! <dt>aX<
/dt><
dd><i>Layer alpha, channel in layer alpha</i>
</dd>
**! </dl> **! <i>All channels are calculated separately, if nothing else is specified.</i> **! <execute>
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#include <math.h> /* floor */
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RCSID("$Id: layers.c,v 1.
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RCSID("$Id: layers.c,v 1.
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#include "image_machine.h"