static int SceneCompareFunction(ForestElement elementA, ForestElement elementB, int axis)
{
Vector3 posA = elementA.Transform.GetPosition();
float valueA = (axis == 0) ? posA.X : (axis == 1) ? posA.Y : posA.Z;
Vector3 posB = elementB.Transform.GetPosition();
float valueB = (axis == 0) ? posB.X : (axis == 1) ? posB.Y : posB.Z;
if (valueA < valueB)
return -1;
if (valueA > valueB)
return 1;
return 0;
}
public override void OnAdd(Scene scene)
{
mesh = ResourceManager.Inst.GetMesh("Cecropia");
base.OnAdd(scene);
for(int i = 0; i < entityCount; i++)
{
Vector3 pos;
Vector3 normal;
scene.MainTerrain.GenerateRandomTransform(RandomHelper.RandomGen, out pos, out normal);
ForestElement element = new ForestElement();
element.Transform = new Transform();
element.Transform.SetPosition(pos);
element.Mesh = mesh;
visibleMeshes.AddElement(element, false);
}
visibleMeshes.BuildTree();
RecursivelyBuildBounds(visibleMeshes.GetRoot());
}
public override void OnAdd(Scene scene)
{
base.OnAdd(scene);
meshes = new Mesh[meshNames.Length];
for(int i = 0; i < meshNames.Length; i++)
meshes[i] = ResourceManager.Inst.GetMesh(meshNames[i]);
List<TriangleGraph> availableTriangles = null;
if (useRegion)
{
scene.MainTerrain.GetTrianglesInRegion(RandomHelper.RandomGen, out availableTriangles, region);
if (availableTriangles.Count == 0)
{
isEnabled = false;
return;
}
}
for(int i = 0; i < entityCount; i++)
{
Vector3 pos;
Vector3 normal;
if (useRegion)
{
int index = i % (availableTriangles.Count+1);
int randIndex = RandomHelper.RandomGen.Next(availableTriangles.Count);//index);
normal = availableTriangles[randIndex].Normal;
pos = availableTriangles[randIndex].GeneratePointInTriangle(RandomHelper.RandomGen);
}
else
scene.MainTerrain.GenerateRandomTransform(RandomHelper.RandomGen, out pos, out normal);
ForestElement element = new ForestElement();
element.Transform = (alignToSurface) ? new NormalTransform() : new Transform();
if (alignToSurface)
{
NormalTransform transform = (NormalTransform)element.Transform;
transform.ConformToNormal(normal);
if (randomizeOrientation)
transform.SetAngle((float)RandomHelper.RandomGen.NextDouble() * MathHelper.TwoPi);
}
else if(randomizeOrientation)
element.Transform.SetRotation(new Vector3(0, (float)RandomHelper.RandomGen.NextDouble() * MathHelper.TwoPi, 0));
element.Transform.SetPosition(pos);
int randMeshIndex = RandomHelper.RandomGen.Next(meshes.Length);//i % (meshes.Length+1));
element.Mesh = meshes[randMeshIndex];
element.Bounds = element.Transform.TransformBounds(element.Mesh.GetBounds()); //This is only temporary
visibleMeshes.AddElement(element, false);
}
isEnabled = true;
visibleMeshes.BuildTree();
RecursivelyBuildBounds(visibleMeshes.GetRoot());
KDNode<ForestElement> root = visibleMeshes.GetRoot();
root.bounds.Min -= Vector3.One * 1.15f;
root.bounds.Max += Vector3.One * 1.15f;
}
static int SceneCompareFunction(ForestElement elementA, ForestElement elementB, int axis)
{
BoundingBox boundsA = elementA.Bounds;//.Transform.TransformBounds(elementA.Mesh.GetBounds());
Vector3 posA = (boundsA.Max + boundsA.Min) * 0.5f;// elementA.Transform.GetPosition();
float valueA = (axis == 0) ? posA.X : (axis == 1) ? posA.Y : posA.Z;
BoundingBox boundsB = elementB.Bounds;//.Transform.TransformBounds(elementB.Mesh.GetBounds());
Vector3 posB = (boundsB.Max + boundsB.Min) * 0.5f;//elementB.Transform.GetPosition();
float valueB = (axis == 0) ? posB.X : (axis == 1) ? posB.Y : posB.Z;
if (valueA < valueB)
return -1;
if (valueA > valueB)
return 1;
return 0;
}
static Vector2 SceneBoundsFunction(ForestElement element, int axis)
{
BoundingBox bounds = element.Bounds;//.Transform.TransformBounds(element.Mesh.GetBounds());
return (axis == 0) ? new Vector2(bounds.Min.X, bounds.Max.X) : ((axis == 1) ? new Vector2(bounds.Min.Y, bounds.Max.Y) : new Vector2(bounds.Min.Z, bounds.Max.Z));
}
static BoundingBox SceneBoundsEval(ForestElement element)
{
return element.Bounds;
}
