/// <summary>
/// Intersect a segment with the world. If non-zero the predicate
/// allows certain skins to be excluded
/// </summary>
/// <param name="seg"></param>
/// <param name="collisionPredicate"></param>
/// <returns></returns>
public abstract bool SegmentIntersect(out float fracOut, out CollisionSkin skinOut, out Vector3 posOut, out Vector3 normalOut,
Segment seg, CollisionSkinPredicate1 collisionPredicate);
/// <summary>
/// SegmentIntersect
/// </summary>
/// <param name="fracOut"></param>
/// <param name="skinOut"></param>
/// <param name="posOut"></param>
/// <param name="normalOut"></param>
/// <param name="seg"></param>
/// <param name="collisionPredicate"></param>
/// <returns>bool</returns>
public override bool SegmentIntersect(out float fracOut, out CollisionSkin skinOut, out Microsoft.Xna.Framework.Vector3 posOut, out Microsoft.Xna.Framework.Vector3 normalOut, JigLibX.Geometry.Segment seg, CollisionSkinPredicate1 collisionPredicate)
{
fracOut = float.MaxValue;
skinOut = null;
posOut = normalOut = Vector3.Zero;
float frac;
Vector3 pos;
Vector3 normal;
Vector3 segmentBeginning = seg.Origin;
Vector3 segmentEnd = seg.Origin + seg.Delta;
Vector3 min = Vector3.Min(segmentBeginning, segmentEnd);
Vector3 max = Vector3.Max(segmentBeginning, segmentEnd);
active_.Clear();
BoundingBox box = new BoundingBox(min, max);
Extract(min, max, active_);
float distanceSquared = float.MaxValue;
int nActive = active_.Count;
for (int i = 0; i != nActive; ++i)
{
CollisionSkin skin = active_[i];
if (collisionPredicate == null || collisionPredicate.ConsiderSkin(skin))
{
if (BoundingBoxHelper.OverlapTest(ref box, ref skin.WorldBoundingBox))
{
if (skin.SegmentIntersect(out frac, out pos, out normal, seg))
{
if (frac >= 0)
{
float newDistanceSquared = Vector3.DistanceSquared(segmentBeginning, pos);
if (newDistanceSquared < distanceSquared)
{
distanceSquared = newDistanceSquared;
fracOut = frac;
skinOut = skin;
posOut = pos;
normalOut = normal;
}
}
}
}
}
}
return(fracOut <= 1);
}
/// <summary>
/// Intersect a segment with the world. If non-zero the predicate
/// allows certain skins to be excluded
/// </summary>
/// <param name="seg"></param>
/// <param name="collisionPredicate"></param>
/// <returns></returns>
public abstract bool SegmentIntersect(out float fracOut, out CollisionSkin skinOut, out Vector3 posOut, out Vector3 normalOut,
Segment seg, CollisionSkinPredicate1 collisionPredicate);
public override bool SegmentIntersect(out float fracOut, out CollisionSkin skinOut, out Microsoft.Xna.Framework.Vector3 posOut, out Microsoft.Xna.Framework.Vector3 normalOut, JigLibX.Geometry.Segment seg, CollisionSkinPredicate1 collisionPredicate)
{
fracOut = float.MaxValue;
skinOut = null;
posOut = normalOut = Vector3.Zero;
Vector3 min = seg.GetPoint(0);
Vector3 tmp = seg.GetEnd();
Vector3 max;
Vector3.Max(ref min, ref tmp, out max);
Vector3.Min(ref min, ref tmp, out min);
BoundingBox box = new BoundingBox(min, max);
float frac;
Vector3 pos;
Vector3 normal;
active_.Clear();
Extract(min, max, active_);
int nActive = active_.Count;
for (int i = 0; i != nActive; ++i)
{
CollisionSkin skin = active_[i];
if (collisionPredicate == null || collisionPredicate.ConsiderSkin(skin))
{
if (BoundingBoxHelper.OverlapTest(ref box, ref skin.WorldBoundingBox))
{
if (skin.SegmentIntersect(out frac, out pos, out normal, seg))
{
if (frac >= 0 && frac < fracOut)
{
fracOut = frac;
skinOut = skin;
posOut = pos;
normalOut = normal;
}
}
}
}
}
return(fracOut <= 1);
}
public override bool SegmentIntersect(out float fracOut, out CollisionSkin skinOut, out Vector3 posOut, out Vector3 normalOut, Segment seg, CollisionSkinPredicate1 collisionPredicate)
{
int numSkins = skins.Count;
BoundingBox segBox = BoundingBoxHelper.InitialBox;
BoundingBoxHelper.AddSegment(seg, ref segBox);
//initialise the outputs
fracOut = float.MaxValue;
skinOut = null;
posOut = normalOut = Vector3.Zero;
// working vars
float frac;
Vector3 pos;
Vector3 normal;
for (int iskin = 0; iskin < numSkins; ++iskin)
{
CollisionSkin skin = skins[iskin];
if ((collisionPredicate == null) ||
collisionPredicate.ConsiderSkin(skin))
{
// basic bbox test
if (BoundingBoxHelper.OverlapTest(ref skin.WorldBoundingBox, ref segBox))
{
if (skin.SegmentIntersect(out frac, out pos, out normal, seg))
{
if (frac < fracOut)
{
posOut = pos;
normalOut = normal;
skinOut = skin;
fracOut = frac;
}
}
}
}
}
if (fracOut > 1.0f) return false;
fracOut = MathHelper.Clamp(fracOut, 0.0f, 1.0f);
return true;
}
} // void
public override bool SegmentIntersect(out float fracOut, out CollisionSkin skinOut, out Vector3 posOut, out Vector3 normalOut, Segment seg, CollisionSkinPredicate1 collisionPredicate)
{
int numSkins = skins.Count;
BoundingBox segBox = BoundingBoxHelper.InitialBox;
BoundingBoxHelper.AddSegment(seg, ref segBox);
//initialise the outputs
fracOut = float.MaxValue;
skinOut = null;
posOut = normalOut = Vector3.Zero;
// working vars
float frac;
Vector3 pos;
Vector3 normal;
for (int iskin = 0; iskin < numSkins; ++iskin)
{
CollisionSkin skin = skins[iskin];
if ((collisionPredicate == null) ||
collisionPredicate.ConsiderSkin(skin))
{
// basic bbox test
if (BoundingBoxHelper.OverlapTest(ref skin.WorldBoundingBox, ref segBox))
{
if (skin.SegmentIntersect(out frac, out pos, out normal, seg))
{
if (frac < fracOut)
{
posOut = pos;
normalOut = normal;
skinOut = skin;
fracOut = frac;
}
}
}
}
}
if (fracOut > 1.0f)
{
return(false);
}
fracOut = MathHelper.Clamp(fracOut, 0.0f, 1.0f);
return(true);
}
public override bool SegmentIntersect(out float fracOut, out CollisionSkin skinOut, out Vector3 posOut, out Vector3 normalOut, Segment seg, CollisionSkinPredicate1 collisionPredicate)
{
fracOut = float.MaxValue;
skinOut = null;
posOut = normalOut = Vector3.Zero;
var segmentBeginning = seg.Origin;
var segmentEnd = seg.Origin + seg.Delta;
var min = Vector3.Min(segmentBeginning, segmentEnd);
var max = Vector3.Max(segmentBeginning, segmentEnd);
active_.Clear();
var box = new BoundingBox(min, max);
Extract(min, max, active_);
var distanceSquared = float.MaxValue;
var nActive = active_.Count;
for (var i = 0; i != nActive; ++i)
{
var skin = active_[i];
if (collisionPredicate == null || collisionPredicate.ConsiderSkin(skin))
{
if (BoundingBoxHelper.OverlapTest(ref box, ref skin.WorldBoundingBox))
{
if (skin.SegmentIntersect(out var frac, out var pos, out var normal, seg))
{
if (frac >= 0)
{
var newDistanceSquared = Vector3.DistanceSquared(segmentBeginning, pos);
if (newDistanceSquared < distanceSquared)
{
distanceSquared = newDistanceSquared;
fracOut = frac;
skinOut = skin;
posOut = pos;
normalOut = normal;
}
}
}
}
}
}
return(fracOut <= 1);
}
