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-rw-r--r--src/classes/share/javax/media/j3d/BoundingSphere.java210
1 files changed, 88 insertions, 122 deletions
diff --git a/src/classes/share/javax/media/j3d/BoundingSphere.java b/src/classes/share/javax/media/j3d/BoundingSphere.java
index 531deed..f37bc6d 100644
--- a/src/classes/share/javax/media/j3d/BoundingSphere.java
+++ b/src/classes/share/javax/media/j3d/BoundingSphere.java
@@ -45,15 +45,15 @@ import com.sun.j3d.internal.HashCodeUtil;
public class BoundingSphere extends Bounds {
- /**
- * The center of the bounding sphere.
- */
- Point3d center;
+/**
+ * The center of the bounding sphere.
+ */
+final Point3d center;
- /**
- * The radius of the bounding sphere.
- */
- double radius;
+/**
+ * The radius of the bounding sphere.
+ */
+double radius;
Point3d boxVerts[];
boolean allocBoxVerts = false;
@@ -90,18 +90,20 @@ public class BoundingSphere extends Bounds {
int i;
boundId = BOUNDING_SPHERE;
+ center = new Point3d();
+
if (boundsObject == null) {
- // Negative volume.
- center = new Point3d();
- radius = -1.0;
+ setEmptyBounds();
+ return;
+ }
+
+ if (boundsObject.boundsIsInfinite) {
+ setInfiniteBounds();
+ return;
}
- else if( boundsObject.boundsIsInfinite ) {
- center = new Point3d();
- radius = Double.POSITIVE_INFINITY;
- } else if( boundsObject.boundId == BOUNDING_BOX){
+ if( boundsObject.boundId == BOUNDING_BOX){
BoundingBox box = (BoundingBox)boundsObject;
- center = new Point3d();
center.x = (box.upper.x+box.lower.x)/2.0;
center.y = (box.upper.y+box.lower.y)/2.0;
center.z = (box.upper.z+box.lower.z)/2.0;
@@ -114,13 +116,12 @@ public class BoundingSphere extends Bounds {
} else if (boundsObject.boundId == BOUNDING_SPHERE) {
BoundingSphere sphere = (BoundingSphere)boundsObject;
- center = new Point3d(sphere.center);
+ center.set(sphere.center);
radius = sphere.radius;
} else if(boundsObject.boundId == BOUNDING_POLYTOPE) {
BoundingPolytope polytope = (BoundingPolytope)boundsObject;
double t,dis,dis_sq,rad_sq,oldc_to_new_c;
- center = new Point3d();
center.x = polytope.centroid.x;
center.y = polytope.centroid.y;
center.z = polytope.centroid.z;
@@ -171,11 +172,9 @@ public class BoundingSphere extends Bounds {
boundId = BOUNDING_SPHERE;
center = new Point3d();
- if( boundsObjects == null || boundsObjects.length <= 0 ) {
- // Negative volume.
- radius = -1.0;
- updateBoundsStates();
- return;
+ if (boundsObjects == null || boundsObjects.length <= 0) {
+ setEmptyBounds();
+ return;
}
// find first non empty bounds object
@@ -198,8 +197,8 @@ public class BoundingSphere extends Bounds {
if( boundsObjects[i] == null ); // do nothing
else if( boundsObjects[i].boundsIsEmpty); // do nothing
else if( boundsObjects[i].boundsIsInfinite ) {
- radius = Double.POSITIVE_INFINITY;
- break; // We're done.
+ setInfiniteBounds();
+ return; // We're done.
}
else if( boundsObjects[i].boundId == BOUNDING_BOX){
BoundingBox b = (BoundingBox)boundsObjects[i];
@@ -310,17 +309,17 @@ public class BoundingSphere extends Bounds {
public void set(Bounds boundsObject){
int i;
- if ((boundsObject == null) || boundsObject.boundsIsEmpty) {
- center.x = 0.0;
- center.y = 0.0;
- center.z = 0.0;
- radius = -1.0;
- } else if( boundsObject.boundsIsInfinite ) {
- center.x = 0.0;
- center.y = 0.0;
- center.z = 0.0;
- radius = Double.POSITIVE_INFINITY;
- } else if( boundsObject.boundId == BOUNDING_BOX){
+ if (boundsObject == null || boundsObject.boundsIsEmpty) {
+ setEmptyBounds();
+ return;
+ }
+
+ if( boundsObject.boundsIsInfinite ) {
+ setInfiniteBounds();
+ return;
+ }
+
+ if( boundsObject.boundId == BOUNDING_BOX){
BoundingBox box = (BoundingBox)boundsObject;
center.x = (box.upper.x + box.lower.x )/2.0;
center.y = (box.upper.y + box.lower.y )/2.0;
@@ -594,11 +593,8 @@ public class BoundingSphere extends Bounds {
if( boundsObjects[i] == null ); // do nothing
else if( boundsObjects[i].boundsIsEmpty); // do nothing
else if( boundsObjects[i].boundsIsInfinite ) {
- center.x = 0.0;
- center.y = 0.0;
- center.z = 0.0;
- radius = Double.POSITIVE_INFINITY;
- break; // We're done.
+ setInfiniteBounds();
+ return; // We're done.
} else if( boundsObjects[i].boundId == BOUNDING_BOX){
b = (BoundingBox)boundsObjects[i];
@@ -769,19 +765,14 @@ public class BoundingSphere extends Bounds {
public void transform( Bounds boundsObject, Transform3D matrix) {
double scale;
- if( boundsObject == null || boundsObject.boundsIsEmpty) {
- // Negative volume.
- center.x = center.y = center.z = 0.0;
- radius = -1.0;
- updateBoundsStates();
- return;
+ if (boundsObject == null || boundsObject.boundsIsEmpty) {
+ setEmptyBounds();
+ return;
}
- if(boundsObject.boundsIsInfinite) {
- center.x = center.y = center.z = 0.0;
- radius = Double.POSITIVE_INFINITY;
- updateBoundsStates();
- return;
+ if (boundsObject.boundsIsInfinite) {
+ setInfiniteBounds();
+ return;
}
if( boundsObject.boundId == BOUNDING_BOX){
@@ -798,11 +789,8 @@ public class BoundingSphere extends Bounds {
scale = matrix.getDistanceScale();
this.radius = ((BoundingSphere)boundsObject).radius * scale;
if (Double.isNaN(radius)) {
- // Negative volume.
- center.x = center.y = center.z = 0.0;
- radius = -1.0;
- updateBoundsStates();
- return;
+ setEmptyBounds();
+ return;
}
} else if(boundsObject.boundId == BOUNDING_POLYTOPE) {
if (tmpPolytope == null) {
@@ -830,11 +818,8 @@ public class BoundingSphere extends Bounds {
scale = trans.getDistanceScale();
radius = radius * scale;
if (Double.isNaN(radius)) {
- // Negative volume.
- center.x = center.y = center.z = 0.0;
- radius = -1.0;
- updateBoundsStates();
- return;
+ setEmptyBounds();
+ return;
}
}
@@ -1296,27 +1281,22 @@ public class BoundingSphere extends Bounds {
*/
public boolean intersect(Bounds boundsObject, BoundingSphere newBoundSphere) {
- if((boundsObject == null ) || boundsIsEmpty || boundsObject.boundsIsEmpty) {
- // Negative volume.
- newBoundSphere.center.x = newBoundSphere.center.y =
- newBoundSphere.center.z = 0.0;
- newBoundSphere.radius = -1.0;
- newBoundSphere.updateBoundsStates();
- return false;
+ if (boundsObject == null || boundsIsEmpty || boundsObject.boundsIsEmpty) {
+ newBoundSphere.set(null);
+ return false;
}
- if(boundsIsInfinite && (!boundsObject.boundsIsInfinite)) {
- newBoundSphere.set(boundsObject);
- return true;
+ if (boundsIsInfinite && !boundsObject.boundsIsInfinite) {
+ newBoundSphere.set(boundsObject);
+ return true;
}
- else if((!boundsIsInfinite) && boundsObject.boundsIsInfinite) {
- newBoundSphere.set(this);
- return true;
+
+ if (boundsObject.boundsIsInfinite) {
+ newBoundSphere.set(this);
+ return true;
}
- else if(boundsIsInfinite && boundsObject.boundsIsInfinite) {
- newBoundSphere.set(this);
- return true;
- } else if(boundsObject.boundId == BOUNDING_BOX){
+
+ if(boundsObject.boundId == BOUNDING_BOX){
BoundingBox tbox = new BoundingBox();
BoundingBox box = (BoundingBox)boundsObject;
if( this.intersect( box) ){
@@ -1325,38 +1305,28 @@ public class BoundingSphere extends Bounds {
newBoundSphere.set( tbox ); // set sphere to the intersection of 2 boxes
return true;
} else {
- // Negative volume.
- newBoundSphere.center.x = newBoundSphere.center.y =
- newBoundSphere.center.z = 0.0;
- newBoundSphere.radius = -1.0;
- newBoundSphere.updateBoundsStates();
- return false;
+ newBoundSphere.set(null);
+ return false;
}
} else if( boundsObject.boundId == BOUNDING_SPHERE ) {
BoundingSphere sphere = (BoundingSphere)boundsObject;
double dis,t,d2;
- boolean status;
dis = Math.sqrt( (center.x-sphere.center.x)*(center.x-sphere.center.x) +
(center.y-sphere.center.y)*(center.y-sphere.center.y) +
(center.z-sphere.center.z)*(center.z-sphere.center.z) );
if ( dis > radius+sphere.radius) {
- // Negative volume.
- newBoundSphere.center.x = newBoundSphere.center.y =
- newBoundSphere.center.z = 0.0;
- newBoundSphere.radius = -1.0;
- status = false;
+ newBoundSphere.set(null);
+ return false;
} else if( dis+radius <= sphere.radius ) { // this sphere is contained within boundsObject
newBoundSphere.center.x = center.x;
newBoundSphere.center.y = center.y;
newBoundSphere.center.z = center.z;
newBoundSphere.radius = radius;
- status = true;
} else if( dis+sphere.radius <= radius ) { // boundsObject is containted within this sphere
newBoundSphere.center.x = sphere.center.x;
newBoundSphere.center.y = sphere.center.y;
newBoundSphere.center.z = sphere.center.z;
newBoundSphere.radius = sphere.radius;
- status = true;
} else {
// distance from this center to center of overlapped volume
d2 = (dis*dis + radius*radius - sphere.radius*sphere.radius)/(2.0*dis);
@@ -1365,11 +1335,10 @@ public class BoundingSphere extends Bounds {
newBoundSphere.center.x = center.x + (sphere.center.x - center.x)*t;
newBoundSphere.center.y = center.y + (sphere.center.y - center.y)*t;
newBoundSphere.center.z = center.z + (sphere.center.z - center.z)*t;
- status = true;
}
newBoundSphere.updateBoundsStates();
- return status;
+ return true;
} else if(boundsObject.boundId == BOUNDING_POLYTOPE) {
BoundingBox tbox = new BoundingBox();
@@ -1382,12 +1351,8 @@ public class BoundingSphere extends Bounds {
newBoundSphere.set( tbox ); // set sphere to the intersection of 2 boxesf
return true;
} else {
- // Negative volume.
- newBoundSphere.center.x = newBoundSphere.center.y =
- newBoundSphere.center.z = 0.0;
- newBoundSphere.radius = -1.0;
- newBoundSphere.updateBoundsStates();
- return false;
+ newBoundSphere.set(null);
+ return false;
}
} else {
throw new IllegalArgumentException(J3dI18N.getString("BoundingSphere8"));
@@ -1403,13 +1368,9 @@ public class BoundingSphere extends Bounds {
*/
public boolean intersect(Bounds[] boundsObjects, BoundingSphere newBoundSphere) {
- if( boundsObjects == null || boundsObjects.length <= 0 || boundsIsEmpty ) {
- // Negative volume.
- newBoundSphere.center.x = newBoundSphere.center.y =
- newBoundSphere.center.z = 0.0;
- newBoundSphere.radius = -1.0;
- newBoundSphere.updateBoundsStates();
- return false;
+ if (boundsObjects == null || boundsObjects.length <= 0 || boundsIsEmpty) {
+ newBoundSphere.set(null);
+ return false;
}
int i=0;
@@ -1419,13 +1380,9 @@ public class BoundingSphere extends Bounds {
i++;
}
- if( i >= boundsObjects.length ) { // all bounds objects were empty
- // Negative volume.
- newBoundSphere.center.x = newBoundSphere.center.y =
- newBoundSphere.center.z = 0.0;
- newBoundSphere.radius = -1.0;
- newBoundSphere.updateBoundsStates();
- return false;
+ if (i >= boundsObjects.length) { // all bounds objects were empty
+ newBoundSphere.set(null);
+ return false;
}
boolean status = false;
@@ -1512,13 +1469,8 @@ public class BoundingSphere extends Bounds {
throw new IllegalArgumentException(J3dI18N.getString("BoundingSphere9"));
}
}
- if( status == false) {
- // Negative volume.
- newBoundSphere.center.x = newBoundSphere.center.y =
- newBoundSphere.center.z = 0.0;
- newBoundSphere.radius = -1.0;
- newBoundSphere.updateBoundsStates();
- }
+ if (status == false)
+ newBoundSphere.set(null);
return status;
}
@@ -1723,6 +1675,20 @@ public class BoundingSphere extends Bounds {
return new String( "Center="+center+" Radius="+radius);
}
+private void setEmptyBounds() {
+ center.set(0.0d, 0.0d, 0.0d);
+ radius = -1.0;
+ boundsIsInfinite = false;
+ boundsIsEmpty = true;
+}
+
+private void setInfiniteBounds() {
+ center.set(0.0d, 0.0d, 0.0d);
+ radius = Double.POSITIVE_INFINITY;
+ boundsIsEmpty = false;
+ boundsIsInfinite = true;
+}
+
private void updateBoundsStates() {
if (checkBoundsIsNaN()) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 10:59:22 +0000