GraphUI GraphShape: createGLRegion() -> updateGLRegion(), called by addShapeToRegion() impl to utilize OutlineShape -> GLRegion ctor w/ proper buffer-size

This way we avoid unnecessary buffer growth and allow creation of 'always' fitting buffer sizes.

+++

Update or freshly create the GLRegion, while allocating its buffers with given initial `vertexCount` and `indexCount`.

Method shall be invoked by the addShapeToRegion(GLProfile, GL2ES2) implementation before actually adding the OutlineShape to the GLRegion.

addShapeToRegion(GLProfile, GL2ES2) is capable to determine initial `vertexCount` and `indexCount` buffer sizes,
as it composes the OutlineShapes to be added.

updateGLRegion(GLProfile, GL2ES2, TextureSequence, OutlineShape) maybe used for convenience.

In case GLRegion is `null`, a new instance is being created.

In case the GLRegion already exists, it will be either cleared if the GL2ES2 `gl` instance is not `null`
or earmarked for deletion at a later time and a new instance is being created.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/graphui/classes/com/jogamp/graph/ui/shapes/Rectangle.java b/src/graphui/classes/com/jogamp/graph/ui/shapes/Rectangle.java
index dd6a272cb..d11e3bdb1 100644
--- a/src/graphui/classes/com/jogamp/graph/ui/shapes/Rectangle.java
+++ b/src/graphui/classes/com/jogamp/graph/ui/shapes/Rectangle.java
@@ -29,6 +29,8 @@ package com.jogamp.graph.ui.shapes;
 
 import com.jogamp.graph.curve.OutlineShape;
 import com.jogamp.graph.ui.GraphShape;
+import com.jogamp.opengl.GL2ES2;
+import com.jogamp.opengl.GLProfile;
 
 /**
  * A GraphUI Rectangle {@link GraphShape}
@@ -58,7 +60,7 @@ public class Rectangle extends GraphShape {
     }
 
     @Override
-    protected void addShapeToRegion() {
+    protected void addShapeToRegion(final GLProfile glp, final GL2ES2 gl) {
         final OutlineShape shape = new OutlineShape();
         final float x1 = 0f;
         final float y1 = 0f;
@@ -88,8 +90,11 @@ public class Rectangle extends GraphShape {
         }
         shape.setIsQuadraticNurbs();
         shape.setSharpness(oshapeSharpness);
+
+        updateGLRegion(glp, gl, null, shape);
         region.addOutlineShape(shape, null, rgbaColor);
         box.resize(shape.getBounds());
+        setRotationPivot( box.getCenter() );
     }
 
     @Override