protected override void ConfigureCollidable(TriangleEntry entry, float dt)
{
var shape = entry.Collidable.Shape;
mesh.Shape.TriangleMesh.Data.GetTriangle(entry.Index, out shape.vA, out shape.vB, out shape.vC);
Matrix3x3 o;
Matrix3x3.CreateFromQuaternion(ref mesh.worldTransform.Orientation, out o);
Matrix3x3.Transform(ref shape.vA, ref o, out shape.vA);
Matrix3x3.Transform(ref shape.vB, ref o, out shape.vB);
Matrix3x3.Transform(ref shape.vC, ref o, out shape.vC);
Vector3 center;
Vector3.Add(ref shape.vA, ref shape.vB, out center);
Vector3.Add(ref center, ref shape.vC, out center);
Vector3.Multiply(ref center, 1 / 3f, out center);
Vector3.Subtract(ref shape.vA, ref center, out shape.vA);
Vector3.Subtract(ref shape.vB, ref center, out shape.vB);
Vector3.Subtract(ref shape.vC, ref center, out shape.vC);
Vector3.Add(ref center, ref mesh.worldTransform.Position, out center);
//The bounding box doesn't update by itself.
entry.Collidable.worldTransform.Position = center;
entry.Collidable.worldTransform.Orientation = Quaternion.Identity;
entry.Collidable.UpdateBoundingBoxInternal(dt);
}
protected void TryToAdd(int index)
{
var entry = new TriangleEntry {
Index = index
};
if (!subPairs.ContainsKey(entry))
{
var collidablePair = new CollidablePair(CollidableA, entry.Collidable = GetOpposingCollidable(index));
var newPair = (MobileMeshPairHandler)NarrowPhaseHelper.GetPairHandler(ref collidablePair);
if (newPair != null)
{
newPair.CollisionRule = CollisionRule;
newPair.UpdateMaterialProperties(MaterialA, MaterialB); //Override the materials, if necessary. Meshes don't currently support custom materials but..
newPair.Parent = this;
subPairs.Add(entry, newPair);
}
}
containedPairs.Add(entry);
}
protected override void ConfigureCollidable(TriangleEntry entry, float dt)
{
}
/// <summary> /// Configure a triangle from CollidableB to represent the object at the given index. /// </summary> /// <param name="entry">Entry to configure.</param> /// <param name="dt">Time step duration.</param> protected abstract void ConfigureCollidable(TriangleEntry entry, float dt);