From 846032c284f4516664dff398f71b3f7f6327281c Mon Sep 17 00:00:00 2001
From: Chien Yang <jada@dev.java.net>
Date: Thu, 4 Nov 2004 22:59:21 +0000
Subject: 1) Do not compute cachedFrustum if j3d.viewFrustumCulling is false.
 2) Removed an unuse method in CachedFrustum.java.

git-svn-id: https://svn.java.net/svn/j3d-core~svn/trunk@70 ba19aa83-45c5-6ac9-afd3-db810772062c
---
 .../share/javax/media/j3d/CachedFrustum.java       | 131 ---------------------
 src/classes/share/javax/media/j3d/Canvas3D.java    |   6 +-
 2 files changed, 5 insertions(+), 132 deletions(-)

diff --git a/src/classes/share/javax/media/j3d/CachedFrustum.java b/src/classes/share/javax/media/j3d/CachedFrustum.java
index a034e7d..e4d1df1 100644
--- a/src/classes/share/javax/media/j3d/CachedFrustum.java
+++ b/src/classes/share/javax/media/j3d/CachedFrustum.java
@@ -437,135 +437,4 @@ class CachedFrustum {
 
   }
 
-
-    /**
-     * Tests for intersection of six sided hull  and the frustum
-     * @param six sided bounding box ( lower (x,y,z), upper (x,y,z))
-     * @return true if they intersect
-     */
-    boolean intersect( double lx, double ly, double lz,
-		       double ux, double uy, double uz) {
-	int i,index;
-
-	// System.out.println("intersect frustum with box : lower ( " + lx + ", " + ly + ", " + lz +
-	// ") upper( " + ux + ", " + uy + ", " + uz + ")");
-	//      System.out.println("frustum "+this.toString());
-	//     check if box and bounding box  of frustum intersect
-	if( ux > this.lower.x &&
-	    lx < this.upper.x &&
-	    uy > this.lower.y &&
-	    ly < this.upper.y &&
-	    uz > this.lower.z &&
-	    lz < this.upper.z ) {
-	} else {
-	    //      System.out.println("false box and bounding box  of frustum do not intersect");
-	    return false;
-	}
-
-	// check if all box points out any frustum plane
-	for(i=0;i<6;i++){
-	    if(( ux*this.clipPlanes[i].x +
-		 uy*this.clipPlanes[i].y +
-		 uz*this.clipPlanes[i].z + this.clipPlanes[i].w ) > -EPSILON ) {
-		continue; // corner inside plane
-	    }
-	    if(( ux*this.clipPlanes[i].x +
-		 ly*this.clipPlanes[i].y +
-		 uz*this.clipPlanes[i].z + this.clipPlanes[i].w ) > -EPSILON ){
-		continue;
-	    }
-	    if(( ux*this.clipPlanes[i].x +
-		 ly*this.clipPlanes[i].y +
-		 lz*this.clipPlanes[i].z + this.clipPlanes[i].w ) > -EPSILON ){
-		continue;
-	    }
-	    if(( ux*this.clipPlanes[i].x +
-		 uy*this.clipPlanes[i].y +
-		 lz*this.clipPlanes[i].z + this.clipPlanes[i].w ) > -EPSILON ) {
-		continue;
-	    }
-	    if(( lx*this.clipPlanes[i].x +
-		 uy*this.clipPlanes[i].y +
-		 uz*this.clipPlanes[i].z + this.clipPlanes[i].w ) > -EPSILON ) {
-		continue;
-	    }
-	    if(( lx*this.clipPlanes[i].x +
-		 ly*this.clipPlanes[i].y +
-		 uz*this.clipPlanes[i].z + this.clipPlanes[i].w ) > -EPSILON ) {
-		continue;
-	    }
-	    if(( lx*this.clipPlanes[i].x +
-		 ly*this.clipPlanes[i].y +
-		 lz*this.clipPlanes[i].z + this.clipPlanes[i].w ) > -EPSILON ) {
-		continue;
-	    }
-	    if(( lx*this.clipPlanes[i].x +
-		 uy*this.clipPlanes[i].y +
-		 lz*this.clipPlanes[i].z + this.clipPlanes[i].w ) > -EPSILON ) {
-		continue;
-	    }
-	    //      System.out.println("false all corners outside this frustum plane"+frustum.clipPlanes[i].toString());
-	    return false; // all corners outside this frustum plane
-	}
-
-	// check if any box corner  is inside of the frustum silhoette edges in the 3 views
-	// y-z
-	for(i=0;i<this.nxEdges;i++){
-	    index = this.xEdgeList[i];
-      if(( uy*this.xEdges[index].y +
-	   uz*this.xEdges[index].z + this.xEdges[index].w ) < EPSILON ) break; // corner inside ege
-      if(( uy*this.xEdges[index].y +
-	   lz*this.xEdges[index].z + this.xEdges[index].w ) < EPSILON ) break;
-      if(( ly*this.xEdges[index].y +
-	   uz*this.xEdges[index].z + this.xEdges[index].w ) < EPSILON ) break;
-      if(( ly*this.xEdges[index].y +
-	   lz*this.xEdges[index].z + this.xEdges[index].w ) < EPSILON ) break;
-      if( i == this.nxEdges-1) {
-	//      System.out.println("false all box corners outside yz silhouette edges ");
-	return false; // all box corners outside yz silhouette edges
-      }
-    }
-    // x-z
-    for(i=0;i<this.nyEdges;i++){
-      index = this.yEdgeList[i];
-      if(( ux*this.yEdges[index].x +
-	   uz*this.yEdges[index].z + this.yEdges[index].w ) < EPSILON ) break;
-      if(( ux*this.yEdges[index].x +
-	   lz*this.yEdges[index].z + this.yEdges[index].w ) < EPSILON ) break;
-      if(( lx*this.yEdges[index].x +
-	   uz*this.yEdges[index].z + this.yEdges[index].w ) < EPSILON ) break;
-      if(( lx*this.yEdges[index].x +
-	   lz*this.yEdges[index].z + this.yEdges[index].w ) < EPSILON ) break;
-      if( i == this.nyEdges-1) {
-	//      System.out.println("false all box corners outside xz silhouette edges");
-	return false; // all box corners outside xz silhouette edges
-      }
-    }
-    // x-y
-    for(i=0;i<this.nzEdges;i++){
-      index = this.zEdgeList[i];
-      if(( uy*this.zEdges[index].y +
-	   uz*this.zEdges[index].z + this.zEdges[index].w ) < EPSILON ) break;
-      if(( uy*this.zEdges[index].y +
-	   lz*this.zEdges[index].z + this.zEdges[index].w ) < EPSILON ) break;
-      if(( ly*this.zEdges[index].y +
-	   uz*this.zEdges[index].z + this.zEdges[index].w ) < EPSILON ) break;
-      if(( ly*this.zEdges[index].y +
-	   lz*this.zEdges[index].z + this.zEdges[index].w ) < EPSILON ) break;
-      if( i == this.nzEdges-1) {
-	/*
-	  System.out.println("false all box corners outside xy silhouette edges");
-	  System.out.println("xy silhouette edges=");
-	  for(int j=0;j<this.nzEdges;j++){
-	  System.out.println(this.zEdges[j].toString());
-	  }
-	  */
-	return false; // all box corners outside xy silhouette edges
-      }
-    }
-    //      System.out.println("true");
-    return true;
-  }
-
-
 }
diff --git a/src/classes/share/javax/media/j3d/Canvas3D.java b/src/classes/share/javax/media/j3d/Canvas3D.java
index 4505897..8a7dc82 100644
--- a/src/classes/share/javax/media/j3d/Canvas3D.java
+++ b/src/classes/share/javax/media/j3d/Canvas3D.java
@@ -1536,7 +1536,11 @@ public class Canvas3D extends Canvas {
     }
 
     void setFrustumPlanes(Vector4d[] planes) {
-	viewFrustum.set(planes);
+	
+	if(VirtualUniverse.mc.viewFrustumCulling) {
+	    /* System.out.println("Canvas3D.setFrustumPlanes()"); */
+	    viewFrustum.set(planes);
+	}
     }
 
 
-- 
cgit v1.2.3