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       Vectorized Printing Classes -

       class SoHardCopy
           The SoHardCopy class is a static class for initializing the
           hardcopy support.
       class SoPSVectorOutput
           The SoPSVectorOutput class is used for writing Postscript.
       class SoVectorOutput
           The SoVectorOutput class is used for setting vector output file.

       SoVectorizeAction will create an SoVectorOutput which will output to
       stdout by default. SoVectorizeAction::getOutput() can be used to fetch
       this output, and the user will probably want to set a file to output
       to. "
   class SoVectorizeAction
       The SoVectorizeAction class is the base class for vectorizing Coin
       scene graphs.

       SoVectorizeAction will traverse the scene graph and convert all
       supported geometry into vectorized data. Subclasses can then use this
       data to produce vector files of different formats. "
   class SoVectorizePSAction
       The SoVectorizePSAction class is used for rendering to a Postscript

Detailed Description

       The vectorized printing classes are for rendering to vector devices
       instead of raster devices. You can use this to e.g. generate scalable
       PostScript images for printing instead of raster images that will
       become pixellated when you scale them up.

       See below for A HardCopy Overview. A HardCopy Overview The main API for
       HardCopy support in Coin is the abstract class SoVectorizeAction.
       SoVectorizeAction will extract geometry from an Inventor scene graph,
       and project the geometry onto a specified page. Since postscript and
       other vector based file formats do not support z-buffer or depth
       clipping, all geometry is rendered using a simple painter’s algorithm
       (geometry is sorted based on distance to camera).

       SoVectorizePSAction inherits SoVectorizeAction, and will output a
       Postscript file.

       Texture-mapped polygons are not supported, since this is not supported
       by the vector file formats, at least it’s not supported in Postscript.
       Gouraud shading is not supported in the Postscript language (at least
       not for V2.0), but an approximation is implemeting using an algorithm
       that divides the triangle into several small (flat-shaded) triangles.
       The gouraud shading quality (the number of sub-triangles) is controlled
       by an epsilon value. The gouraud shading function is written by
       Frederic Delhoume (delhoume (at), and is free (public domain)

       Typical use of SoVectorizePSAction is shown in the following piece of

         SoVectorizePSAction * ps = new SoVectorizePSAction;
         SoVectorOutput * out = ps->getOutput();

         if (!out->openFile(’’)) {
           return -1; // unable to open output file

         // to enable gouraud shading. 0.1 is a nice epsilon value
         // ps->setGouraudThreshold(0.1f);

         // clear to white background. Not really necessary if you
         // want a white background
         ps->setBackgroundColor(TRUE, SbColor(1.0f, 1.0f, 1.0f));

         // select LANDSCAPE or PORTRAIT orientation

         // start creating a new page (A4 page, with 10mm border).
         ps->beginPage(SbVec2f(10.0f, 10.0f), SbVec2f(190.0f, 277.0f));

         // There are also enums for A0-A10. Example:
         // ps->beginStandardPage(SoVectorizeAction::A4, 10.0f);

         // calibrate so that text, lines, points and images will have the
         // same size in the postscript file as on the monitor.

         // apply action on the viewer scenegraph. Remember to use
         // SoSceneManager’s scene graph so that the camera is included.

         // this will create the postscript file

         // close file

         delete ps;

       It is also possible to have several viewports and/or layers on a page.
       This is useful if your application has several layers of geometry, for
       instance some annotations in 2D on top of a 3D scene graph. To create
       several layers, the beginViewport() and endViewport() functions can be

           Coin 2.1

           TGS provides HardCopy support as a separate extension for TGS


       Generated automatically by Doxygen for Coin from the source code.