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Fixed warnings

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This commit is contained in:
ozkriff 2014-03-17 16:14:39 +04:00
parent 2b7339e734
commit c026f520e1
2 changed files with 17 additions and 21 deletions
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34
src/cgmath/matrix.rs
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@ -556,42 +556,42 @@ for Mat4<S>
fn invert(&self) -> Option<Mat4<S>> {
if self.is_invertible() {
// Gauss Jordan Elimination with partial pivoting
// So take this matrix, A, augmented with the identity
// and essentially reduce [A|I]
// So take this matrix ('mat') augmented with the identity ('ident'),
// and essentially reduce [mat|ident]
let mut A = self.clone();
let mut I = Mat4::identity();
let mut mat = self.clone();
let mut ident = Mat4::identity();
for j in range(0u, 4u) {
// Find largest element in col j
let mut i1 = j;
for i in range(j + 1, 4) {
if A.cr(j, i).abs() > A.cr(j, i1).abs() {
if mat.cr(j, i).abs() > mat.cr(j, i1).abs() {
i1 = i;
}
}
// Swap columns i1 and j in A and I to
// Swap columns i1 and j in mat and ident to
// put pivot on diagonal
A.swap_c(i1, j);
I.swap_c(i1, j);
mat.swap_c(i1, j);
ident.swap_c(i1, j);
// Scale col j to have a unit diagonal
*I.mut_c(j) = I.c(j).div_s(A.cr(j, j).clone());
*A.mut_c(j) = A.c(j).div_s(A.cr(j, j).clone());
*ident.mut_c(j) = ident.c(j).div_s(mat.cr(j, j).clone());
*mat.mut_c(j) = mat.c(j).div_s(mat.cr(j, j).clone());
// Eliminate off-diagonal elems in col j of A,
// doing identical ops to I
// Eliminate off-diagonal elems in col j of 'mat',
// doing identical ops to 'ident'
for i in range(0u, 4u) {
if i != j {
let ij_mul_aij = I.c(j).mul_s(A.cr(i, j).clone());
let aj_mul_aij = A.c(j).mul_s(A.cr(i, j).clone());
*I.mut_c(i) = I.c(i).sub_v(&ij_mul_aij);
*A.mut_c(i) = A.c(i).sub_v(&aj_mul_aij);
let ij_mul_aij = ident.c(j).mul_s(mat.cr(i, j).clone());
let aj_mul_aij = mat.c(j).mul_s(mat.cr(i, j).clone());
*ident.mut_c(i) = ident.c(i).sub_v(&ij_mul_aij);
*mat.mut_c(i) = mat.c(i).sub_v(&aj_mul_aij);
}
}
}
Some(I)
Some(ident)
} else {
None
}

4
src/test/matrix.rs
View file

@ -16,12 +16,10 @@
use cgmath::matrix::*;
use cgmath::vector::*;
use cgmath::approx::ApproxEq;
type float = f64;
pub mod mat2 {
use cgmath::matrix::*;
use cgmath::vector::*;
type float = f64;
pub static A: Mat2<f64> = Mat2 { x: Vec2 { x: 1.0, y: 3.0 },
y: Vec2 { x: 2.0, y: 4.0 } };
@ -37,7 +35,6 @@ pub mod mat2 {
pub mod mat3 {
use cgmath::matrix::*;
use cgmath::vector::*;
type float = f64;
pub static A: Mat3<f64> = Mat3 { x: Vec3 { x: 1.0, y: 4.0, z: 7.0 },
y: Vec3 { x: 2.0, y: 5.0, z: 8.0 },
@ -59,7 +56,6 @@ pub mod mat3 {
pub mod mat4 {
use cgmath::matrix::*;
use cgmath::vector::*;
type float = f64;
pub static A: Mat4<f64> = Mat4 { x: Vec4 { x: 1.0, y: 5.0, z: 9.0, w: 13.0 },
y: Vec4 { x: 2.0, y: 6.0, z: 10.0, w: 14.0 },