todo: add description here
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Set Color Representation
index .If a device has more than 256 simultaneously displayable colors, it usually does not have a CLUT. In this case the pixels do not contain a color value or index but a direct color value in RGB (e.g. a pixel with 32 bits has 8 unused bits, 8 bits for red, 8 bits for green and 8 bits for blue). This means that the VDI creates a pseudo CLUT with 256 pens and calling vs_color() for one of these pens will not change the color of the pixels which have been drawn with this pen, but it will change the color of new pixels drawn with this pen. Note that the palettes are handled per workstation which means, that each workstation has its own palette (pseudo CLUT) and changing the RGB value for a color index on one workstation will not change the value of the same pen in another workstation. |
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sets the color index for filled areas
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selects the fill type for filled graphic objects
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turns the outline of a filled area (rectangle, polygone, ellipse, ...) on or off.
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sets the style index based on the fill interior style. This index has no effect if the interior style is hollow, solid, or user-defined.
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is the function which allows you to set a user-defined 16*16 pixel pattern.
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turns the outline of a filled area (rectangle, polygone, ellipse, ...) on or off, and set the line type for this outline.
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sets the color index for lines
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changes the style of the line ends
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sets the line type for polyline operations
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set the pattern for the user-defined line type
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sets the width of lines for polyline operations
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sets the color index for markers
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sets the marker height
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selects the kind of marker for v_pmarker().
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sets the horizontal and vertical alignment for graphic text
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sets the color index for text output
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sets special text effects (really?).
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selects a font for text output
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sets the character height in pixels
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sets the character cell height in points (1 pt = 1/72"). For bitmap font this function selects the closest height which is smaller or equal to the requested size. If the font is a vector font, only predefined heights can be selected (usually 8, 9, 10, 11, 12, 14, 18, 24, 36, and 48 pt).
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enables text rotation in 1/10 of degrees. If the selected font is a bitmap font, rotation works only in steps of 90 degrees
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selects the writing mode for graphic operations
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