initial upload

Unity-Master/Assets/Plugins/RootMotion/FinalIK/IK Solvers/FBBIKArmBending.cs

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+using UnityEngine;
+using System.Collections;
+using RootMotion.FinalIK;
+
+namespace RootMotion.FinalIK {
+
+	/// <summary>
+	/// Calculates bending direction and hand rotations for a FBBIK rig for VR hand controllers. 
+	/// </summary>
+	public class FBBIKArmBending : MonoBehaviour {
+
+		public FullBodyBipedIK ik;
+
+		// Bend direction offset for the arms
+		public Vector3 bendDirectionOffsetLeft;
+		public Vector3 bendDirectionOffsetRight;
+
+		// Add some bend direction offset in character space
+		public Vector3 characterSpaceBendOffsetLeft;
+		public Vector3 characterSpaceBendOffsetRight;
+
+		private Quaternion leftHandTargetRotation;
+		private Quaternion rightHandTargetRotation;
+		private bool initiated;
+
+		void LateUpdate() {
+			if (ik == null) return;
+
+			if (!initiated) {
+				ik.solver.OnPostUpdate += OnPostFBBIK;
+				initiated = true;
+			}
+			
+			// Left arm bend direction
+			if (ik.solver.leftHandEffector.target != null) {
+				Vector3 armAxisLeft = Vector3.left;
+				ik.solver.leftArmChain.bendConstraint.direction = ik.solver.leftHandEffector.target.rotation * armAxisLeft +  ik.solver.leftHandEffector.target.rotation * bendDirectionOffsetLeft + ik.transform.rotation * characterSpaceBendOffsetLeft;
+				ik.solver.leftArmChain.bendConstraint.weight = 1f;
+			}
+
+			// Right arm bend direction
+			if (ik.solver.rightHandEffector.target != null) {
+				Vector3 armAxisRight = Vector3.right;
+				ik.solver.rightArmChain.bendConstraint.direction = ik.solver.rightHandEffector.target.rotation * armAxisRight +  ik.solver.rightHandEffector.target.rotation * bendDirectionOffsetRight + ik.transform.rotation * characterSpaceBendOffsetRight;
+				ik.solver.rightArmChain.bendConstraint.weight = 1f;
+			}
+		}
+
+		void OnPostFBBIK() {
+			if (ik == null) return;
+
+			// Rotate hand bones
+			if (ik.solver.leftHandEffector.target != null) {
+				ik.references.leftHand.rotation = ik.solver.leftHandEffector.target.rotation;
+			}
+
+			if (ik.solver.rightHandEffector.target != null) {
+				ik.references.rightHand.rotation = ik.solver.rightHandEffector.target.rotation;
+			}
+		}
+
+		void OnDestroy() {
+			if (ik != null) ik.solver.OnPostUpdate -= OnPostFBBIK;
+		}
+	}
+}