[raster] Add undocumented drop-out rule to the other bbox side also.
* src/raster/ftraster.c (Vertical_Sweep_Drop, Horizontal_Sweep_Drop): Implement it.
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2011-01-13 Werner Lemberg <wl@gnu.org>
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[raster] Add undocumented drop-out rule to the other bbox side also.
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* src/raster/ftraster.c (Vertical_Sweep_Drop,
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Horizontal_Sweep_Drop): Implement it.
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2011-01-13 Werner Lemberg <wl@gnu.org>
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[raster] Reduce jitter value.
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@ -2426,9 +2426,12 @@
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}
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/* undocumented but confirmed: If the drop-out would result in a */
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/* pixel outside of the bounding box, use the right pixel instead */
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/* pixel outside of the bounding box, use the pixel inside of the */
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/* bounding box instead */
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if ( pxl < 0 )
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pxl = e1;
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else if ( TRUNC( pxl ) >= ras.bWidth )
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pxl = e2;
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/* check that the other pixel isn't set */
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e1 = pxl == e1 ? e2 : e1;
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@ -2606,10 +2609,13 @@
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return; /* no drop-out control */
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}
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/* undocumented but confirmed: If the drop-out would result in a */
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/* pixel outside of the bounding box, use the top pixel instead */
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/* undocumented but confirmed: If the drop-out would result in a */
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/* pixel outside of the bounding box, use the pixel inside of the */
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/* bounding box instead */
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if ( pxl < 0 )
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pxl = e1;
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else if ( TRUNC( pxl ) >= ras.target.rows )
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pxl = e2;
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/* check that the other pixel isn't set */
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e1 = pxl == e1 ? e2 : e1;
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