#[allow(unused_imports)]
use std::cmp::Ordering;
#[allow(unused_imports)]
use std::ops::Div;

use i_comparable::IComparableError;

#[test]
fn test_mat4() {
    use mat::Mat3;
    use mat::Mat3x1;

    {
        let v = Mat3 {
            _val: [10f64; 9],
            _is_row_major: true,
        };
        assert!(v.size().expect("size result invalid") == 9);
    }
    {
        let v0 = Mat3 {
            _val: [10f64; 9],
            _is_row_major: true,
        };
        let v1 = Mat3 {
            _val: [10f64; 9],
            _is_row_major: true,
        };
        let v2 = v0.plus(&v1).expect("mat plus invalid");
        assert!(v2
            .is_equal(
                &Mat3 {
                    _val: [20f64; 9],
                    _is_row_major: true
                },
                0.0001f64
            )
            .expect("mat is_equal invalid"));
    }
    {
        let v0 = Mat3 {
            _val: [10f64; 9],
            _is_row_major: true,
        };
        let v1 = Mat3 {
            _val: [10f64; 9],
            _is_row_major: false,
        };
        assert!(!v0.is_equal(&v1, 0.0001f64).expect("mat is_equal invalid"));
    }
    {
        let v0 = Mat3 {
            _val: [10f64; 9],
            _is_row_major: true,
        };
        let v1 = Mat3 {
            _val: [7f64; 9],
            _is_row_major: true,
        };
        let v2 = v0.minus(&v1).expect("mat minus invalid");
        assert!(v2
            .is_equal(
                &Mat3 {
                    _val: [3f64; 9],
                    _is_row_major: true
                },
                0.0001f64
            )
            .expect("mat is_equal invalid"));
    }
    {
        let v0 = Mat3 {
            _val: [20f64; 9],
            _is_row_major: true,
        };
        let v1 = Mat3 {
            _val: [2f64; 9],
            _is_row_major: true,
        };
        let v2 = v0.div(&v1).expect("mat div invalid");
        assert!(v2
            .is_equal(
                &Mat3 {
                    _val: [10f64; 9],
                    _is_row_major: true
                },
                0.0001f64
            )
            .expect("mat is_equal invalid"));
    }
    {
        let v0 = Mat3 {
            _val: [10f64; 9],
            _is_row_major: true,
        };
        let v1 = v0.normalize().expect("mat normalize invalid");
        assert!(v1
            .is_equal(
                &Mat3 {
                    _val: [1f64; 9],
                    _is_row_major: true
                },
                0.0001f64
            )
            .expect("mat is_equal invalid"));
    }
    {
        let v0 = Mat3 {
            _val: [10f64; 9],
            _is_row_major: true,
        };
        let v1 = v0.scale(3f64).expect("mat normalize invalid");
        assert!(v1
            .is_equal(
                &Mat3 {
                    _val: [30f64; 9],
                    _is_row_major: true
                },
                0.0001f64
            )
            .expect("mat is_equal invalid"));
    }
    {
        let v0 = Mat3 {
            _val: [10f64; 9],
            _is_row_major: true,
        };
        let v1 = Mat3 {
            _val: [10f64; 9],
            _is_row_major: true,
        };
        let a = v0.is_equal(&v1, 0.0001f64).expect("mat is_equal invalid");
        assert!(a);
    }
    {
        let v0 = Mat3 {
            _val: [10f64; 9],
            _is_row_major: true,
        };
        let v1 = Mat3 {
            _val: [10.01f64; 9],
            _is_row_major: true,
        };
        let a = v0.is_equal(&v1, 0.0001f64).expect("mat is_equal invalid");
        assert!(!a);
    }
    {
        let mut v0 = Mat3 {
            _is_row_major: true,
            ..Mat3::default()
        };
        let mut v1 = Mat3 {
            _is_row_major: true,
            ..Mat3::default()
        };
        for x in 0..9 {
            v0._val[x] = x as f64;
        }
        for x in 10..19 {
            v1._val[x - 10] = x as f64;
        }
        let v2 = v0.mul(&v1).expect("mat mul invalid");
        let v3 = Mat3 {
            _val: [
                45f64, 48f64, 51f64, 162f64, 174f64, 186f64, 279f64, 300f64, 321f64,
            ],
            _is_row_major: true,
        };
        let a = v2.is_equal(&v3, 0.0001f64).expect("mat mul invalid");
        assert!(a);
    }
    {
        //3x3 mul 3x1
        let v0 = Mat3x1 {
            _val: [1f64, 2f64, 3f64],
        };
        let mut arr = [0f64; 9];
        for x in 0..9 {
            arr[x] = x as f64;
        }
        let is_row_major = true;
        let v1 = Mat3::<f64>::init(arr, is_row_major);
        let v2 = v1.mul_mat3x1(&v0).expect("mat3x3 mul mat3x1 invalid");
        assert!(v2
            .is_equal(
                &Mat3x1 {
                    _val: [8f64, 26f64, 44f64]
                },
                0.0001f64
            )
            .expect("mat3x1 is_equal invalid"));
    }
    {
        //3x3 mul 3x1
        let v0 = Mat3x1 {
            _val: [1f64, 2f64, 3f64],
        };
        let mut arr = [0f64; 9];
        for x in 0..9 {
            arr[x] = x as f64;
        }
        let is_row_major = false;
        let v1 = Mat3::<f64>::init(arr, is_row_major);
        let v2 = v1.mul_mat3x1(&v0).expect("mat3x3 mul mat3x1 invalid");
        assert!(v2
            .is_equal(
                &Mat3x1 {
                    _val: [8f64, 26f64, 44f64]
                },
                0.0001f64
            )
            .expect("mat3x1 is_equal invalid"));
    }
    {
        //transpose
        let mut arr = [0f64; 9];
        for x in 0..9 {
            arr[x] = x as f64;
        }
        let is_row_major = true;
        let v1 = Mat3::<f64>::init(arr, is_row_major);
        let v2 = v1.transpose();
        assert!(v2
            .is_equal(
                &Mat3 {
                    _val: [0f64, 3f64, 6f64, 1f64, 4f64, 7f64, 2f64, 5f64, 8f64],
                    _is_row_major: true
                },
                0.0001f64
            )
            .expect("mat3 is_equal invalid"));
    }
    {
        //identity
        let v1 = Mat3::<f64>::iden();
        assert!(v1
            .is_equal(
                &Mat3 {
                    _val: [1f64, 0f64, 0f64, 0f64, 1f64, 0f64, 0f64, 0f64, 1f64],
                    _is_row_major: true
                },
                0.0001f64
            )
            .expect("mat3 is_equal invalid"));
    }
}