Fix deprecation warnings (#522)

Author: aloucks

src/matrix.rs

@@ -387,7 +387,7 @@ impl<S: BaseFloat> Matrix4<S> {
  /// `center`, using `up` for orientation.
  #[deprecated = "Use Matrix4::look_at_rh"]
  pub fn look_at(eye: Point3<S>, center: Point3<S>, up: Vector3<S>) -> Matrix4<S> {
- Matrix4::look_at_dir(eye, center - eye, up)
+ Matrix4::look_at_rh(eye, center, up)
  }
 
  /// Create a homogeneous transformation matrix that will cause a vector to point at
@@ -1122,7 +1122,7 @@ impl<S: BaseFloat> Transform<Point2<S>> for Matrix3<S> {
 impl<S: BaseFloat> Transform<Point3<S>> for Matrix3<S> {
  fn look_at(eye: Point3<S>, center: Point3<S>, up: Vector3<S>) -> Matrix3<S> {
  let dir = center - eye;
- Matrix3::look_at(dir, up)
+ Matrix3::look_to_lh(dir, up)
  }
 
  fn look_at_lh(eye: Point3<S>, center: Point3<S>, up: Vector3<S>) -> Matrix3<S> {
@@ -1155,7 +1155,7 @@ impl<S: BaseFloat> Transform<Point3<S>> for Matrix3<S> {
 impl<S: BaseFloat> Transform<Point3<S>> for Matrix4<S> {
 
  fn look_at(eye: Point3<S>, center: Point3<S>, up: Vector3<S>) -> Matrix4<S> {
- Matrix4::look_at(eye, center, up)
+ Matrix4::look_at_rh(eye, center, up)
  }
 
  fn look_at_lh(eye: Point3<S>, center: Point3<S>, up: Vector3<S>) -> Matrix4<S> {

src/quaternion.rs

@@ -485,7 +485,7 @@ impl<S: BaseFloat> Rotation for Quaternion<S> {
 
  #[inline]
  fn look_at(dir: Vector3<S>, up: Vector3<S>) -> Quaternion<S> {
- Matrix3::look_at(dir, up).into()
+ Matrix3::look_to_lh(dir, up).into()
  }
 
  #[inline]

src/rotation.rs

@@ -365,7 +365,7 @@ impl<S: BaseFloat> Rotation for Basis3<S> {
  #[inline]
  fn look_at(dir: Vector3<S>, up: Vector3<S>) -> Basis3<S> {
  Basis3 {
- mat: Matrix3::look_at(dir, up),
+ mat: Matrix3::look_to_lh(dir, up),
  }
  }
 

tests/matrix.rs

@@ -740,7 +740,9 @@ pub mod matrix3 {
  ]));
 
  #[allow(deprecated)]
- assert_ulps_eq!(m, Matrix3::look_at(dir, up));
+ {
+ assert_ulps_eq!(m, Matrix3::look_at(dir, up));
+ }
  }
 
  #[test]
@@ -1164,7 +1166,9 @@ pub mod matrix4 {
 
  let m = Matrix4::look_to_rh(eye, dir, up);
  #[allow(deprecated)]
- assert_ulps_eq!(m, Matrix4::look_at_dir(eye, dir, up));
+ {
+ assert_ulps_eq!(m, Matrix4::look_at_dir(eye, dir, up));
+ }
 
  let expected = Matrix4::from([
  [-0.9486833, -0.16903086, -0.26726127, 0.0],