Bug 802: Graph TextRenderer Performance Part-1 (incomplete, rendering artifacts)

Strategy Change:
  - Font.Glyph itself holds it's OutlineShape
    with it's default scaling.
    Triangulation is done only once per glyph!

  - A CharSequence produces a Region
    by translating and scaling each Glyphs's OutlineShape.
    This removes the need for re-triangulate - see above.
    See: TextRendererUtil

  - The indices of re-added Triangles are
    offset to the new vertices (FIXME, seems not be be accurate yet).

  - OutlineShape's vertices and triangles are reused if 'clean'.

  - Simplified code

  - Reduced copies

API Changes:
  - OutlineShape, Region, ...: See above

  - Removed TextRenderer, GlyphShape and GlyphString: Redundant

  - Added TextRendererUtil to produce the Region from CharSequence

Result:
  - Over 600 fps while changing text for each frame.
    Previously only ~60fps max.

TODO:
  - Region shall not hold the triangles itself,
    but the indices instead.
    This will remove the need to swizzle w/ vertices in the Region Renderer impl
    and easies reusage of OutlineShapes.

1 files changed, 2 insertions, 7 deletions

diff --git a/src/jogl/classes/com/jogamp/graph/font/Font.java b/src/jogl/classes/com/jogamp/graph/font/Font.java
index 6c0041de9..1e0572037 100644
--- a/src/jogl/classes/com/jogamp/graph/font/Font.java
+++ b/src/jogl/classes/com/jogamp/graph/font/Font.java
@@ -91,6 +91,7 @@ public interface Font {
         public float getScale(float pixelSize);
         public AABBox getBBox(float pixelSize);
         public float getAdvance(float pixelSize, boolean useFrationalMetrics);
+        public OutlineShape getShape();
         public int hashCode();
     }
 
@@ -117,13 +118,7 @@ public interface Font {
     public boolean isPrintableChar( char c );
 
     /**
-     * @param glyph source of the created OutlineShape
-     * @param vertexFactory factory for vertices
-     * @return OutlineShape of the glyph
-     */
-    public OutlineShape getOutlineShape(Glyph glyph, Factory<? extends Vertex> vertexFactory);
-
-    /**
+     * @deprecated Remove altogether - use {@link #getOutlineShape(Glyph, Factory)
      * @param shapes optional storage of OutlineShapes passed by user, new shapes are appended
      * @param string source of the created OutlineShapes
      * @param pixelSize