impl more traits for components

src/dynamics/joint/ball_joint.rs

@@ -1,7 +1,7 @@
 use crate::dynamics::SpringModel;
 use crate::math::{Point, Real, Rotation, Vector};
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, PartialEq)]
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
 /// A joint that removes all relative linear motion between a pair of points on two bodies.
 pub struct BallJoint {

src/dynamics/joint/fixed_joint.rs

@@ -1,6 +1,6 @@
 use crate::math::{Isometry, Real, SpacialVector};
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, PartialEq)]
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
 /// A joint that prevents all relative movement between two bodies.
 ///

src/dynamics/joint/generic_joint.rs

@@ -2,7 +2,7 @@ use crate::dynamics::{BallJoint, FixedJoint, PrismaticJoint, RevoluteJoint};
 use crate::math::{Isometry, Real, SpacialVector};
 use crate::na::{Rotation3, UnitQuaternion};
 
-#[derive(Copy, Clone, Debug)]
+#[derive(Copy, Clone, Debug, PartialEq)]
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
 /// A joint that prevents all relative movement between two bodies.
 ///

src/dynamics/joint/joint.rs

@@ -2,7 +2,7 @@
 use crate::dynamics::RevoluteJoint;
 use crate::dynamics::{BallJoint, FixedJoint, JointHandle, PrismaticJoint, RigidBodyHandle};
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, PartialEq)]
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
 /// An enum grouping all possible types of joints.
 pub enum JointParams {

src/dynamics/joint/prismatic_joint.rs

@@ -7,7 +7,7 @@ use na::Vector2;
 #[cfg(feature = "dim3")]
 use na::Vector5;
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, PartialEq)]
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
 /// A joint that removes all relative motion between two bodies, except for the translations along one axis.
 pub struct PrismaticJoint {

src/dynamics/joint/revolute_joint.rs

@@ -3,7 +3,7 @@ use crate::math::{Isometry, Point, Real, Vector};
 use crate::utils::WBasis;
 use na::{RealField, Unit, Vector5};
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, PartialEq)]
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
 /// A joint that removes all relative motion between two bodies, except for the rotations along one axis.
 pub struct RevoluteJoint {