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Merge pull request #55 from ChrisDenham/patch-2

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Allows LOD level object name to be specified for ray intersection tests.
This commit is contained in:
Andrey Kopysov
2013-02-05 23:30:52 -08:00
parent f936e48a69 17390713ee
commit 05c165eb82
1 changed files with 19 additions and 9 deletions
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28
src/alternativa/engine3d/objects/LOD.as
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@@ -33,6 +33,12 @@ package alternativa.engine3d.objects {
*/
alternativa3d var levelList:Object3D;
/**
* Specifies the name of the LOD level object to be used for ray intersection tests.
* By default, the maximum detail level object is used, but this property allows you to specify a lower level.
*/
public var intersectionTestLevelName:String;
/**
* Adds a children as a new level of detail. In case of given object is a children of other <code>Object3D</code> already, it will removed from the previous place.
* @param level <code>Object3D</code> which will added.
@@ -266,17 +272,21 @@ package alternativa.engine3d.objects {
override public function intersectRay(origin:Vector3D, direction:Vector3D):RayIntersectionData {
var childrenData:RayIntersectionData = super.intersectRay(origin, direction);
var contentData:RayIntersectionData;
if (levelList != null && (boundBox == null || boundBox.intersectRay(origin, direction))) {
if (levelList.transformChanged) levelList.composeTransforms();
var level:Object3D = levelList;
if (intersectionTestLevelName != null) {
level = getLevelByName(intersectionTestLevelName);
}
if (level != null && (boundBox == null || boundBox.intersectRay(origin, direction))) {
if (level.transformChanged) level.composeTransforms();
var childOrigin:Vector3D = new Vector3D();
var childDirection:Vector3D = new Vector3D();
childOrigin.x = levelList.inverseTransform.a*origin.x + levelList.inverseTransform.b*origin.y + levelList.inverseTransform.c*origin.z + levelList.inverseTransform.d;
childOrigin.y = levelList.inverseTransform.e*origin.x + levelList.inverseTransform.f*origin.y + levelList.inverseTransform.g*origin.z + levelList.inverseTransform.h;
childOrigin.z = levelList.inverseTransform.i*origin.x + levelList.inverseTransform.j*origin.y + levelList.inverseTransform.k*origin.z + levelList.inverseTransform.l;
childDirection.x = levelList.inverseTransform.a*direction.x + levelList.inverseTransform.b*direction.y + levelList.inverseTransform.c*direction.z;
childDirection.y = levelList.inverseTransform.e*direction.x + levelList.inverseTransform.f*direction.y + levelList.inverseTransform.g*direction.z;
childDirection.z = levelList.inverseTransform.i*direction.x + levelList.inverseTransform.j*direction.y + levelList.inverseTransform.k*direction.z;
contentData = levelList.intersectRay(childOrigin, childDirection);
childOrigin.x = level.inverseTransform.a*origin.x + level.inverseTransform.b*origin.y + level.inverseTransform.c*origin.z + level.inverseTransform.d;
childOrigin.y = level.inverseTransform.e*origin.x + level.inverseTransform.f*origin.y + level.inverseTransform.g*origin.z + level.inverseTransform.h;
childOrigin.z = level.inverseTransform.i*origin.x + level.inverseTransform.j*origin.y + level.inverseTransform.k*origin.z + level.inverseTransform.l;
childDirection.x = level.inverseTransform.a*direction.x + level.inverseTransform.b*direction.y + level.inverseTransform.c*direction.z;
childDirection.y = level.inverseTransform.e*direction.x + level.inverseTransform.f*direction.y + level.inverseTransform.g*direction.z;
childDirection.z = level.inverseTransform.i*direction.x + level.inverseTransform.j*direction.y + level.inverseTransform.k*direction.z;
contentData = level.intersectRay(childOrigin, childDirection);
}
if (childrenData != null) {
if (contentData != null) {