michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:    http://creativecommons.org/publicdomain/zero/1.0/ */
michael@0: "use strict";
michael@0: 
michael@0: function test() {
michael@0:   let m1 = mat4.create();
michael@0: 
michael@0:   ok(m1, "Should have created a matrix with mat4.create().");
michael@0:   is(m1.length, 16, "A mat4 should have 16 elements.");
michael@0: 
michael@0:   ok(isApproxVec(m1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]),
michael@0:     "When created, a mat4 should have the values default to identity.");
michael@0: 
michael@0:   mat4.set([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16], m1);
michael@0:   ok(isApproxVec(m1, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]),
michael@0:     "The mat4.set() function didn't set the values correctly.");
michael@0: 
michael@0:   mat4.transpose(m1);
michael@0:   ok(isApproxVec(m1, [1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15, 4, 8, 12, 16]),
michael@0:     "The mat4.transpose() function didn't set the values correctly.");
michael@0: 
michael@0:   mat4.identity(m1);
michael@0:   ok(isApproxVec(m1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]),
michael@0:     "The mat4.identity() function didn't set the values correctly.");
michael@0: 
michael@0:   ok(isApprox(mat4.determinant(m1), 1),
michael@0:     "The mat4.determinant() function didn't calculate the value correctly.");
michael@0: 
michael@0:   let m2 = mat4.inverse([1, 3, 1, 1, 1, 1, 2, 1, 2, 3, 4, 1, 1, 1, 1, 1]);
michael@0:   ok(isApproxVec(m2, [
michael@0:     -1, -3, 1, 3, 0.5, 0, 0, -0.5, 0, 1, 0, -1, 0.5, 2, -1, -0.5
michael@0:   ]), "The mat4.inverse() function didn't calculate the values correctly.");
michael@0: 
michael@0:   let m3 = mat4.toRotationMat([
michael@0:     1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15, 4, 8, 12, 16]);
michael@0:   ok(isApproxVec(m3, [
michael@0:     1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15, 0, 0, 0, 1
michael@0:   ]), "The mat4.toRotationMat() func. didn't calculate the values correctly.");
michael@0: 
michael@0:   let m4 = mat4.toMat3([
michael@0:     1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15, 4, 8, 12, 16]);
michael@0:   ok(isApproxVec(m4, [1, 5, 9, 2, 6, 10, 3, 7, 11]),
michael@0:     "The mat4.toMat3() function didn't set the values correctly.");
michael@0: 
michael@0:   let m5 = mat4.toInverseMat3([
michael@0:     1, 3, 1, 1, 1, 1, 2, 1, 2, 3, 4, 1, 1, 1, 1, 1]);
michael@0:   ok(isApproxVec(m5, [2, 9, -5, 0, -2, 1, -1, -3, 2]),
michael@0:     "The mat4.toInverseMat3() function didn't set the values correctly.");
michael@0: }