/// <summary>
/// Moves forward while painting a branch here.
/// </summary>
/// <param name="length">Length of the new branch. The current scale will be applied to this.</param>
/// <param name="radiusEndScale">How much smaller the ending radius should be. The equation is: StartRadius * RadiusEndScale = EndRadius.</param>
/// <remarks>
/// The crayon always moves along its local Y-axis, which is initially upwards.
/// </remarks>
public void Forward(float length, float radiusEndScale)
{
// Run the constraints
if (constraints != null && !constraints.ConstrainForward(this, ref length, ref radiusEndScale))
{
return;
}
// Create the branch
TreeBranch branch = new TreeBranch(
state.Rotation,
length * state.Scale,
GetRadiusAt(state.ParentIndex, state.ParentPosition) * state.RadiusScale,
GetRadiusAt(state.ParentIndex, state.ParentPosition) * state.RadiusScale * radiusEndScale,
state.ParentIndex,
state.ParentPosition);
branch.BoneIndex = state.ParentBoneIndex;
skeleton.Branches.Add(branch);
branchTransforms.Add(GetTransform());
// Set newest branch to parent
state.ParentIndex = skeleton.Branches.Count - 1;
// Rotation is relative to the current parent, so set to identity
// to maintain original orientation
state.Rotation = Quaternion.Identity;
// Move to the end of the branch
state.ParentPosition = 1.0f;
// Move radius scale back to one, since the radius will now be relative to the new parent
state.RadiusScale = 1.0f;
}
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);
}