ABB GDB021BE GDB021BE01 HIEE300766R0001 control card module
Technical data of product parameters
The region of device space to be painted by a sampled image is determined similarly to that of a filled shape, though not identically. The application transformsGDB021BE GDB021BE01 HIEE300766R0001
the image’s source rectangle into device space and defines a half-open region, just
as for fill operations. However, only those pixels whose centers lie within the region are painted. The position of the center of such a pixel—in other words, the
point whose coordinate values have fractional parts of one-half—is mapped back
into source space to determine how to color the pixel. There is no averaging over
the pixel area; if the resolution of the source image is higher than that of deviceGDB021BE GDB021BE01 HIEE300766R0001
space, some source samples are not used.
For clipping, the clipping region consists of the set of pixels that would be included by a fill operation. Subsequent painting operations affect a region that is
the intersection of the set of pixels defined by the clipping region with the set of
pixels for the region to be painted.
Scan conversion of character glyphs is performed by a different algorithm from
the one above. That font rendering algorithm uses hints in the glyph descriptionsGDB021BE GDB021BE01 HIEE300766R0001
and techniques that are specialized to glyph rasterization. When a stroke is drawn along a path, the scan conversion algorithm may produce
lines of nonuniform thickness because of rasterization effects. In general, the line
width and the coordinates of the endpoints, transformed into device space, are
arbitrary real numbers not quantized to device pixels. A line of a given width can
intersect with different numbers of device pixels, depending on where it is positioned. Figure 6.7 illustrates this effect.
For best results, it is important to compensate for the rasterization effects to produce strokes of uniform thickness. This is especially important in low-resolutionGDB021BE GDB021BE01 HIEE300766R0001
display applications. To meet this need, PDF 1.2 provides an optional automatic
stroke adjustment feature. When stroke adjustment is enabled, the line width and
the coordinates of a stroke are automatically adjusted as necessary to produce
Product picture display
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Introduction to main products
Focus on DCS, PLC, robot control system and large servo system.
Main products: various modules/cards, controllers, touch screens, servo drives.
Advantages: supply imported original products, professional discontinued parts, fast delivery, accurate delivery time,
Main brands include ABB Bailey, GE/FANC, FOXBORO, Invensys TRICONEX, Bentley BENTLY, A-B Rockwell, Emerson EMERSON, OVATION, MOTOROLA, XYVOM, Honeywell HONEYWELL, Rexroth, KUKA, NI, DEIF, Yokogawa, Woodward WOODWARD, Ryan, Schneider SCHNEIDER, Yaskawa, Moog MOOG, PROSOFT and other brands
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