Rendering optimisation, which gives best results for zoomed in drawings with complex...

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+2006-04-19 Andrius R. <knutux@gmail.com>
+       * src\display\nr-arena-item.cpp, src\display\canvas-arena.cpp,
+         src\display\nr-arena-shape.cpp, src\display\sp-canvas.h,
+         src\display\nr-arena.cpp, src\display\nr-arena-shape.h,
+         src\display\nr-arena-glyphs.cpp, src\display\nr-gradient-gpl.cpp,
+         src\display\sp-canvas.cpp, src\display\sp-ctrlline.cpp,
+         src\livarot\ShapeSweep.cpp, src\livarot\Shape.h, src\livarot\Shape.cpp,
+         src\livarot\Path.h, src\livarot\PathConversion.cpp,
+         src\livarot\ShapeMisc.cpp, src\livarot\Path.cpp, src\libnr\nr-pixblock.h,
+         src\libnr\nr-pixblock.cpp
+
+         Rendering optimisation, which gives best results for zoomed in drawings
+         with complex (multi-node) paths. Optimisation focus - eliminating cubicTo
+         and LineTo nodes outside of visible area, so no unneeded calculations is
+         needed and less memory is consumed (this avoids crashes which were
+         occurring previously if zooming into a complex drawing)
+
 2006-04-18 njh <njh@njhurst.com>
        * share/extensions/measure.inx, share/extensions/measure.py, share/extensions/Makefile.am