public bool ConstrainForward(TreeCrayon crayon, ref float distance, ref float radiusEndScale)
{
Matrix m = crayon.GetTransform();
if (m.Up.Y < 0.0f && m.Translation.Y + m.Up.Y*distance < limit)
return false; // distance *= 100; // Use distance * 100 to visualize which branches will be cut.
return true;
}
/// <summary>
/// Generates the structure of a tree, but no vertex data.
/// </summary>
/// <param name="rnd">Object providing random numbers.</param>
/// <param name="userConstraint">Object imposing user-defined constraints on the generated tree. See <see cref="TreeConstraints"/>.</param>
/// <returns>A new tree skeleton.</returns>
/// <seealso cref="TreeSkeleton"/>
/// <seealso cref="TreeMesh"/>
/// <seealso cref="TreeLeafCloud"/>
/// <seealso cref="SimpleTree"/>
public TreeSkeleton GenerateTree(Random rnd, TreeContraints userConstraint)
{
if (root == null || maxLevel == 0)
{
throw new InvalidOperationException(
"TreeGenerator has not been initialized. Must set Root and MaxLevel before generating a tree.");
}
var crayon = new TreeCrayon();
crayon.Level = maxLevel;
crayon.BoneLevels = BoneLevels;
crayon.Constraints = constraints;
constraints.UserConstraint = userConstraint;
crayon.Skeleton.LeafAxis = LeafAxis;
crayon.Skeleton.Bones.Add(new TreeBone(Quaternion.Identity, -1, Matrix.Identity, Matrix.Identity, 1, 1, -1));
root.Execute(crayon, rnd);
crayon.Skeleton.CloseEdgeBranches();
crayon.Skeleton.TextureHeight = textureHeight +
textureHeightVariation * (2.0f * (float)rnd.NextDouble() - 1.0f);
return(crayon.Skeleton);
}
public bool ConstrainForward(TreeCrayon crayon, ref float distance, ref float radiusEndScale)
{
Matrix m = crayon.GetTransform();
if (m.Up.Y < 0.0f && m.Translation.Y + m.Up.Y * distance < limit)
{
return(false); // distance *= 100; // Use distance * 100 to visualize which branches will be cut.
}
return(true);
}
public bool ConstrainForward(TreeCrayon crayon, ref float distance, ref float radiusEndScale)
{
foreach (TreeContraints c in constaints)
{
if (!c.ConstrainForward(crayon, ref distance, ref radiusEndScale))
return false;
}
if (userConstraint != null)
return userConstraint.ConstrainForward(crayon, ref distance, ref radiusEndScale);
return true;
}
public bool ConstrainForward(TreeCrayon crayon, ref float distance, ref float radiusEndScale)
{
foreach (TreeContraints c in constaints)
{
if (!c.ConstrainForward(crayon, ref distance, ref radiusEndScale))
{
return(false);
}
}
if (userConstraint != null)
{
return(userConstraint.ConstrainForward(crayon, ref distance, ref radiusEndScale));
}
return(true);
}
/// <summary>
/// Generates the structure of a tree, but no vertex data.
/// </summary>
/// <param name="rnd">Object providing random numbers.</param>
/// <param name="userConstraint">Object imposing user-defined constraints on the generated tree. See <see cref="TreeConstraints"/>.</param>
/// <returns>A new tree skeleton.</returns>
/// <seealso cref="TreeSkeleton"/>
/// <seealso cref="TreeMesh"/>
/// <seealso cref="TreeLeafCloud"/>
/// <seealso cref="SimpleTree"/>
public TreeSkeleton GenerateTree(Random rnd, TreeContraints userConstraint)
{
if (root == null || maxLevel == 0)
throw new InvalidOperationException(
"TreeGenerator has not been initialized. Must set Root and MaxLevel before generating a tree.");
var crayon = new TreeCrayon();
crayon.Level = maxLevel;
crayon.BoneLevels = BoneLevels;
crayon.Constraints = constraints;
constraints.UserConstraint = userConstraint;
crayon.Skeleton.LeafAxis = LeafAxis;
crayon.Skeleton.Bones.Add(new TreeBone(Quaternion.Identity, -1, Matrix.Identity, Matrix.Identity, 1, 1, -1));
root.Execute(crayon, rnd);
crayon.Skeleton.CloseEdgeBranches();
crayon.Skeleton.TextureHeight = textureHeight +
textureHeightVariation*(2.0f*(float) rnd.NextDouble() - 1.0f);
return crayon.Skeleton;
}