void DrawChildCells(float2 frequency)
{
WorleyNoise childWorley = worley;
childWorley.frequency = frequency;
float3 meanPointWorld = parentCell.data.position + vectorUtil.MeanPoint(parentCell.vertices);
WorleyNoise.CellData startChild = childWorley.GetCellData(meanPointWorld);
var checkNext = new NativeQueue <WorleyNoise.CellData>(Allocator.Temp);
var alreadyChecked = new NativeList <int2>(Allocator.Temp);
checkNext.Enqueue(startChild);
alreadyChecked.Add(startChild.index);
var children = new NativeList <WorleyNoise.CellProfile>(Allocator.Temp);
while (checkNext.Count > 0)
{
WorleyNoise.CellData childData = checkNext.Dequeue();
WorleyNoise.CellData dataFromParent = worley.GetCellData(childData.position);
bool childIsInParent = dataFromParent.index.Equals(parentCell.data.index);
if (!childIsInParent)
{
continue;
}
WorleyNoise.CellProfile childProfile = childWorley.GetCellProfile(childData);
float3 positionInParent = childProfile.data.position - parentCell.data.position;
positionInParent.y += baseHeight;
leaves.Draw(childProfile, positionInParent);
children.Add(childProfile);
for (int i = 0; i < childProfile.vertices.Length; i++)
{
WorleyNoise.CellData adjacent = childProfile.adjacentCells[i].c0;
if (!alreadyChecked.Contains(adjacent.index))
{
checkNext.Enqueue(adjacent);
alreadyChecked.Add(adjacent.index);
}
}
}
checkNext.Dispose();
alreadyChecked.Dispose();
}
/// <summary>
/// Draws the leaves using the specified world, view, and projection matrices.
/// </summary>
/// <param name="world">World matrix.</param>
/// <param name="view">View matrix.</param>
/// <param name="projection">Projection matrix.</param>
/// <exception cref="InvalidOperationException">If no leaf effect is set.</exception>
/// <exception cref="InvalidOperationException">If no Skeleton is set.</exception>
/// <remarks>
/// This method sets all the appropriate effect parameters.
/// </remarks>
public void DrawLeaves(Matrix world, Matrix view, Matrix projection, Vector3 cameraPos)
{
if (Skeleton == null)
{
throw new InvalidOperationException("A Skeleton must be set before leaves can be rendered.");
}
if (LeafEffect == null)
{
throw new InvalidOperationException("LeafEffect must be set before leaves can be rendered.");
}
LeafEffect.Parameters["WorldView"].SetValue(world * view);
//leafEffect.Parameters["View"].SetValue(view);
LeafEffect.Parameters["Projection"].SetValue(projection);
LeafEffect.Parameters["LeafScale"].SetValue(world.Right.Length());
Effect effect = LeafEffect;
effect.Parameters["World"].SetValue(world);
effect.Parameters["WorldIT"].SetValue(Matrix.Transpose(Matrix.Invert(world)));
effect.Parameters["WorldViewProj"].SetValue(world * view * projection);
effect.Parameters["ViewInv"].SetValue(Matrix.Invert(view));
effect.Parameters["isSkydome"].SetValue(false);
effect.Parameters["LightDirection"].SetValue(Lighting.LightDirection);
effect.Parameters["LightColor"].SetValue(Lighting.LightColor);
effect.Parameters["LightColorAmbient"].SetValue(Lighting.LightColorAmbient);
effect.Parameters["FogColor"].SetValue(Lighting.FogColor);
effect.Parameters["fDensity"].SetValue(Lighting.FogDensity);
effect.Parameters["SunLightness"].SetValue(Lighting.SunLightness);
effect.Parameters["sunRadiusAttenuation"].SetValue(Lighting.SunRadiusAttenuation);
effect.Parameters["largeSunLightness"].SetValue(Lighting.LargeSunLightness);
effect.Parameters["largeSunRadiusAttenuation"].SetValue(Lighting.LargeSunRadiusAttenuation);
effect.Parameters["dayToSunsetSharpness"].SetValue(Lighting.DayToSunsetSharpness);
effect.Parameters["hazeTopAltitude"].SetValue(Lighting.HazeTopAltitude);
if (Skeleton.LeafAxis == null)
{
LeafEffect.Parameters["BillboardRight"].SetValue(Vector3.Right);
LeafEffect.Parameters["BillboardUp"].SetValue(Vector3.Up);
}
else
{
Vector3 axis = Skeleton.LeafAxis.Value;
var forward = new Vector3(view.M13, view.M23, view.M33);
Vector3 right = Vector3.Cross(forward, axis);
right.Normalize();
Vector3 up = axis;
Vector3.TransformNormal(ref right, ref view, out right);
Vector3.TransformNormal(ref up, ref view, out up);
LeafEffect.Parameters["BillboardRight"].SetValue(right);
LeafEffect.Parameters["BillboardUp"].SetValue(up);
}
Skeleton.CopyBoneBindingMatricesTo(BindingMatrices, AnimationState.BoneRotations);
LeafEffect.Parameters["Bones"].SetValue(BindingMatrices);
// Used for normals of billboard leaves
Vector3 treePos = Vector3.Transform(Vector3.Zero, BindingMatrices[0] * world);
effect.Parameters["BillboardNormal"].SetValue(cameraPos - treePos);
LeafEffect.Parameters["Texture"].SetValue(LeafTexture);
Leaves.Draw(LeafEffect);
}