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-rw-r--r--src/classes/share/javax/media/j3d/BoundingBox.java137
1 files changed, 71 insertions, 66 deletions
diff --git a/src/classes/share/javax/media/j3d/BoundingBox.java b/src/classes/share/javax/media/j3d/BoundingBox.java
index ba830a3..c8ce0a9 100644
--- a/src/classes/share/javax/media/j3d/BoundingBox.java
+++ b/src/classes/share/javax/media/j3d/BoundingBox.java
@@ -113,48 +113,44 @@ final Point3d upper;
public BoundingBox(Bounds boundsObject) {
int i;
boundId = BOUNDING_BOX;
- if( boundsObject == null ) {
- // Negative volume.
- lower = new Point3d( 1.0d, 1.0d, 1.0d);
- upper = new Point3d(-1.0d, -1.0d, -1.0d);
+ lower = new Point3d();
+ upper = new Point3d();
+
+ if (boundsObject == null) {
+ setEmptyBounds();
+ return;
}
- else if( boundsObject.boundsIsInfinite ) {
- lower = new Point3d( Double.NEGATIVE_INFINITY,
- Double.NEGATIVE_INFINITY,
- Double.NEGATIVE_INFINITY);
- upper = new Point3d(Double.POSITIVE_INFINITY,
- Double.POSITIVE_INFINITY,
- Double.POSITIVE_INFINITY);
+
+ if (boundsObject.boundsIsInfinite) {
+ setInfiniteBounds();
+ return;
}
- else if( boundsObject.boundId == BOUNDING_BOX){
- BoundingBox box = (BoundingBox)boundsObject;
- lower = new Point3d(box.lower.x, box.lower.y, box.lower.z);
- upper = new Point3d(box.upper.x, box.upper.y, box.upper.z);
+ if( boundsObject.boundId == BOUNDING_BOX){
+ BoundingBox box = (BoundingBox)boundsObject;
+ lower.set(box.lower);
+ upper.set(box.upper);
}
else if( boundsObject.boundId == BOUNDING_SPHERE ) {
BoundingSphere sphere = (BoundingSphere)boundsObject;
- lower = new Point3d(sphere.center.x-sphere.radius,
- sphere.center.y-sphere.radius,
- sphere.center.z-sphere.radius);
-
- upper = new Point3d(sphere.center.x+sphere.radius,
- sphere.center.y+sphere.radius,
- sphere.center.z+sphere.radius);
+ lower.set(sphere.center.x - sphere.radius,
+ sphere.center.y - sphere.radius,
+ sphere.center.z - sphere.radius);
+ upper.set(sphere.center.x + sphere.radius,
+ sphere.center.y + sphere.radius,
+ sphere.center.z + sphere.radius);
}
else if(boundsObject.boundId == BOUNDING_POLYTOPE) {
BoundingPolytope polytope = (BoundingPolytope)boundsObject;
if( polytope.nVerts < 1 ) { // handle degenerate case
- lower = new Point3d(-1.0d, -1.0d, -1.0d);
- upper = new Point3d( 1.0d, 1.0d, 1.0d);
+ lower.set(-1.0d, -1.0d, -1.0d);
+ upper.set( 1.0d, 1.0d, 1.0d);
} else {
- lower = new Point3d( polytope.verts[0].x, polytope.verts[0].y,
- polytope.verts[0].z);
- upper = new Point3d( polytope.verts[0].x, polytope.verts[0].y,
- polytope.verts[0].z);
+ lower.set(polytope.verts[0]);
+ upper.set(polytope.verts[0]);
for(i=1;i<polytope.nVerts;i++) {
if( polytope.verts[i].x < lower.x )
@@ -190,26 +186,21 @@ final Point3d upper;
lower = new Point3d();
boundId = BOUNDING_BOX;
- if( bounds == null || bounds.length <= 0 ) {
- // Negative volume.
- lower.set(1.0d, 1.0d, 1.0d);
- upper.set(-1.0d, -1.0d, -1.0d);
- updateBoundsStates();
- return;
- }
+ if (bounds == null || bounds.length <= 0) {
+ setEmptyBounds();
+ return;
+ }
// find first non empty bounds object
while ((i < bounds.length) && ((bounds[i] == null) || bounds[i].boundsIsEmpty)) {
i++;
}
- if( i >= bounds.length ) { // all bounds objects were empty
- // Negative volume.
- lower.set(1.0d, 1.0d, 1.0d);
- upper.set(-1.0d, -1.0d, -1.0d);
- updateBoundsStates();
- return;
- }
+ if (i >= bounds.length) {
+ // all bounds objects were empty
+ setEmptyBounds();
+ return;
+ }
this.set(bounds[i++]);
if(boundsIsInfinite)
@@ -219,9 +210,8 @@ final Point3d upper;
if( bounds[i] == null ); // do nothing
else if( bounds[i].boundsIsEmpty); // do nothing
else if( bounds[i].boundsIsInfinite ) {
- lower.x = lower.y = lower.z = Double.NEGATIVE_INFINITY;
- upper.x = upper.y = upper.z = Double.POSITIVE_INFINITY;
- break; // We're done.
+ setInfiniteBounds();
+ return; // We're done.
}
else if(bounds[i].boundId == BOUNDING_BOX){
BoundingBox box = (BoundingBox)bounds[i];
@@ -354,16 +344,17 @@ final Point3d upper;
public void set(Bounds boundsObject) {
int i;
- if(( boundsObject == null ) ||( boundsObject.boundsIsEmpty)) {
- // Negative volume.
- lower.x = lower.y = lower.z = 1.0d;
- upper.x = upper.y = upper.z = -1.0d;
+ if ((boundsObject == null) || (boundsObject.boundsIsEmpty)) {
+ setEmptyBounds();
+ return;
+ }
- } else if( boundsObject.boundsIsInfinite ) {
- lower.x = lower.y = lower.z = Double.NEGATIVE_INFINITY;
- upper.x = upper.y = upper.z = Double.POSITIVE_INFINITY;
+ if (boundsObject.boundsIsInfinite) {
+ setInfiniteBounds();
+ return;
+ }
- } else if( boundsObject.boundId == BOUNDING_BOX){
+ if( boundsObject.boundId == BOUNDING_BOX){
BoundingBox box = (BoundingBox)boundsObject;
lower.x = box.lower.x;
@@ -673,19 +664,14 @@ final Point3d upper;
*/
public void transform( Bounds boundsObject, Transform3D matrix) {
- if( boundsObject == null || boundsObject.boundsIsEmpty) {
- // Negative volume.
- lower.x = lower.y = lower.z = 1.0d;
- upper.x = upper.y = upper.z = -1.0d;
- updateBoundsStates();
- return;
+ if (boundsObject == null || boundsObject.boundsIsEmpty) {
+ setEmptyBounds();
+ return;
}
- if(boundsObject.boundsIsInfinite) {
- lower.x = lower.y = lower.z = Double.NEGATIVE_INFINITY;
- upper.x = upper.y = upper.z = Double.POSITIVE_INFINITY;
- updateBoundsStates();
- return;
+ if (boundsObject.boundsIsInfinite) {
+ setInfiniteBounds();
+ return;
}
if(boundsObject.boundId == BOUNDING_BOX){
@@ -735,8 +721,8 @@ final Point3d upper;
*/
public void transform(Transform3D matrix) {
- if(boundsIsInfinite)
- return;
+ if (boundsIsInfinite)
+ return;
if (tmpP3d == null) {
tmpP3d = new Point3d();
@@ -1869,6 +1855,25 @@ final Point3d upper;
upper.y+" "+upper.z );
}
+private void setEmptyBounds() {
+ lower.set( 1.0d, 1.0d, 1.0d);
+ upper.set(-1.0d, -1.0d, -1.0d);
+ boundsIsInfinite = false;
+ boundsIsEmpty = true;
+}
+
+private void setInfiniteBounds() {
+ lower.set(Double.NEGATIVE_INFINITY,
+ Double.NEGATIVE_INFINITY,
+ Double.NEGATIVE_INFINITY);
+ upper.set(Double.POSITIVE_INFINITY,
+ Double.POSITIVE_INFINITY,
+ Double.POSITIVE_INFINITY);
+
+ boundsIsInfinite = true;
+ boundsIsEmpty = false;
+}
+
private void updateBoundsStates() {
if((lower.x == Double.NEGATIVE_INFINITY) &&
(lower.y == Double.NEGATIVE_INFINITY) &&
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 10:48:11 +0000