Simulation

From 7b52cc13af4e85f1ca2deb6b6c77de9c95ea0dcf Mon Sep 17 00:00:00 2001 From: scuri Date: Fri, 17 Oct 2008 06:10:33 +0000 Subject: First commit - moving from LuaForge to SourceForge --- html/en/drv/sim.html | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 html/en/drv/sim.html (limited to 'html/en/drv/sim.html') diff --git a/html/en/drv/sim.html b/html/en/drv/sim.html new file mode 100644 index 0000000..85a4e7f --- /dev/null +++ b/html/en/drv/sim.html @@ -0,0 +1,90 @@ + + + + +Simulation + + + + + +

Simulation Base Driver

+ +

The Simulation driver was created to simulate functions that were not supported by some CD drivers. It works + jointly with the other driver (known as "client"), using its pixel, line and text functions to simulate arcs, sectors, + polygons, boxes, and fillings with styles.

Important: All simulation primitives are based in the client's Pixel, Image and/or Line functions.

+ +

Use

+ +

The Simulation driver is used in several parts of the CD library.

In many drivers, the behavior of a given primitive may not be the expected. Usually this is documented in the + manual. If you wish to activate the simulation of a primitive, simply call function + cdSimulate + with the code of the primitive to be simulated.

+ +

Behavior of Functions

Clipping

Clipping is not implemented in the simulation base driver. The primary + driver must implement its own clipping.

Attributes

+ LineCap: only CD_CAPFLAT is supported.
+ LineJoin: only CD_MITER is supported.
+ LineStyle: If line width is greater than 1, the style is + always continuous.
Font: + Selects a True Type font file for the + FreeType library to + render the text. Notice that TTF fonts have different files for different font styles, like bold and italic. Font files can be in the + current directory, in the directory pointed by the CDDIR environment variable, in Windows in the system defined Font + directory, or using the full path of the file.
+ Old name "System" is mapped to "Courier". For the know font names "Courier" (cour), + "Times" (times) and "Helvetica" (arial), + the styles are added to the font file name as a suffix: "bd", "i" and "bi" are + used for bold, italic and bold-italic. For other fonts, it will first check + for a font map added using the attribute ADDFONTMAP, if + failed it will try to load the type_face name without any change, if fail it + will add the style suffix to the type_face and try to load again. The ".ttf" + file extension is always automatically added to the end of the file name.

Primitives

Pixel: + always uses the client's pixel function. When clipping simulation is active, it executes area and polygon clipping.
Line: + draws lines pixel per pixel.
Rect: + simulated using the client's Line.
Arc: + simulated using the client's Line.
Sector: + simulated using the client's Poly.
Chord: + simulated using the client's Poly
Box: + simulated using the client's Poly.
Begin, + Vertex + and End: + simulate using the Line or Pixel functions, depending on the interior style.
Text: + text simulation is made using TrueType font files in a transparent way for the + user. Oriented text is not supported.

+ +

Exclusive Attributes

"ADDFONTMAP": Add a font map between a type face + name and a file name. It has the format "Type Face=filename", For ex: "Arial + Narrow Bold=ARIALNB". "Type Face" is not case sensitive.

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