Graph Clipping: Use Frustum Clipping using AABBox -> Mv transformed Cube -> Frustum mapping + GraphUI Support

AABBox clipping naturally couldn't be transformed into 3D Model-View (Mv) Space,
as it is axis aligned and only provided 2 points (min/max).

Therefor we map the Group's AABBox to a 8-point Cube,
perform the Mv-transformation and then produce the 6-plane Frustum.

As before, we cull fully outside shapes within the Group's draw method
and perform fragment clipping with same Frustum planes in the shader.

With clipping enabled, the 3D z-axis getBounds() depth
will be slightly increased for functional Frustum operation.
This is also done for setFixedSize(Vec2f).

The Frustum planes are copied to the Graph shader
via float[4*6] -> uniform vec4  gcu_ClipFrustum[6]; // L, R, B, T, N, F each {n.x, n.y, n.z, d}

+++

Concludes related work of below commits
- 1040bed4ecc6f4598ea459f1073a9240583fc3c3
- 5cca51e32999a882e2a5f00cb45ecafc824ffd86

1 files changed, 2 insertions, 2 deletions

diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass2.vp b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass2.vp
index dce78b9c8..5ee5fcb46 100644
--- a/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass2.vp
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass2.vp
@@ -14,8 +14,8 @@ void main(void)
     // gl_Position = gcu_PMVMatrix01[0] * gcu_PMVMatrix01[1] * vec4(gca_FboVertices, 1);
     gl_Position = gcu_PMVMatrix01[0] * gcu_PMVMatrix01[1] * gca_FboVertices;
     
-#ifdef USE_AABBOX_CLIPPING
-    gcv_ClipBBoxCoord = (gcu_PMVMatrix01[1] * gca_FboVertices).xyz; // Mv
+#ifdef USE_FRUSTUM_CLIPPING
+    gcv_ClipCoord = (gcu_PMVMatrix01[1] * gca_FboVertices).xyz; // Mv
 #endif    
     
     gcv_FboTexCoord = gca_FboTexCoords;