SoOffscreenRenderer — renders to an off-screen buffer for printing or generating textures

       This  class  is  used  to  render  into an off-screen buffer to create a printable image or to generate a
       texture image. It uses X Pixmaps for rendering. Methods are provided to  write  the  buffer  to  a  file,
       either as an RGB image or an encapsulated PostScript description.

       SoOffscreenRenderer

SoOffscreenRenderer(constSbViewportRegion&viewportRegion)SoOffscreenRenderer(SoGLRenderAction*ra)~SoOffscreenRenderer()
          Constructors  and destructor. If a render action is passed to the contructor, that action will be used
          in all subsequent offscreen renderings. Otherwise, an internal instance of an SoGLRenderAction will be
          maintained with a viewport region set to the on passed in by the constructor.

     staticfloatgetScreenPixelsPerInch()
          Returns the number of pixels per inch (in the horizontal direction) of the current X device screen.

     staticSbVec2sgetMaximumResolution()
          Get the maximum supported resolution of the viewport.

     voidsetComponents(Componentscomponents)ComponentsgetComponents()const
          Sets or returns the components to be rendered.

     voidsetViewportRegion(constSbViewportRegion&region)constSbViewportRegion&getViewportRegion()const
          Sets or returns the viewport region used for rendering. This will  NOT  be  applied  to  the  viewport
          region of any render action passed in.

     voidsetBackgroundColor(constSbColor&c)constSbColor&getBackgroundColor()const
          Sets or returns the background color for rendering.

     voidsetGLRenderAction(constSoGLRenderAction*ra)SoGLRenderAction*getGLRenderAction()const
          Set  and  get  the render action to use for rendering. This will return any render action passed in by
          the caller.

     SbBoolrender(SoNode*scene)SbBoolrender(SoPath*scene)
          Renders the given scene, specified as a node or a path, into an off-screen buffer.

     unsignedchar*getBuffer()const
          Returns the buffer containing the rendered image. The buffer is an array of unsigned characters.  Each
          pixel  is  stored  sequentially  by scanline, starting with the lower left corner. The data stored for
          each pixel is determined by the Components set before rendering. Pixels are stored in RGBA  order  and
          are  packed  without any padding between pixels or scanlines. The buffer is allocated by the offscreen
          renderer class and the space is deleted when the instance is destructed.

     SbBoolwriteToRGB(FILE*fp)const
          Writes the buffer as a .rgb file to the given file pointer.

     SbBoolwriteToPostScript(FILE*fp)constSbBoolwriteToPostScript(FILE*fp,constSbVec2f&printSize)const
          Writes the buffer as encapsulated PostScript. If a print size is not given, the size of the  image  in
          the  buffer  is  adjusted so it is the same as the apparent size of the viewport region on the current
          device.

                                                                                      SoOffscreenRenderer(3IV)()

       SoOffscreenRenderer — renders to an off-screen buffer for printing or generating textures

#include<Inventor/SoOffscreenRenderer.h>enumComponents{SoOffscreenRenderer::LUMINANCESoOffscreenRenderer::LUMINANCE_TRANSPARENCYSoOffscreenRenderer::RGBSoOffscreenRenderer::RGB_TRANSPARENCY}

          Methods from class SoOffscreenRenderer:

                               SoOffscreenRenderer(constSbViewportRegion&viewportRegion)SoOffscreenRenderer(SoGLRenderAction*ra)~SoOffscreenRenderer()staticfloatgetScreenPixelsPerInch()staticSbVec2sgetMaximumResolution()voidsetComponents(Componentscomponents)ComponentsgetComponents()constvoidsetViewportRegion(constSbViewportRegion&region)constSbViewportRegion&getViewportRegion()constvoidsetBackgroundColor(constSbColor&c)constSbColor&getBackgroundColor()constvoidsetGLRenderAction(constSoGLRenderAction*ra)SoGLRenderAction*getGLRenderAction()constSbBoolrender(SoNode*scene)SbBoolrender(SoPath*scene)unsignedchar*getBuffer()constSbBoolwriteToRGB(FILE*fp)constSbBoolwriteToPostScript(FILE*fp)constSbBoolwriteToPostScript(FILE*fp,constSbVec2f&printSize)const