[FEAT] Add some chaines test

tests/04_transformations.cpp

@@ -201,3 +201,36 @@ TEST_CASE("[04][Trans] A shearing transformation moves z in proportion to y", "[
 
     REQUIRE(transform * p == Tuple::Point(2, 3, 7));
 }
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("[04][Trans] Individual transformations are applied in sequence", "[Matrix]")
+{
+    Tuple p = Tuple::Point(1, 0, 1);
+    Matrix a = Matrix::rotation_x(std::numbers::pi / 2);
+    Matrix b = Matrix::scaling(5, 5, 5);
+    Matrix c = Matrix::translation(10, 5, 7);
+
+    // Appply rotation first.
+    Tuple p2 = a * p;
+    REQUIRE(p2 == Tuple::Point(1, -1, 0));
+    // Then Apply scaling
+    Tuple p3 = b * p2;
+    REQUIRE(p3 == Tuple::Point(5, -5, 0));
+    // Then Apply translation
+    Tuple p4 = c * p3;
+    REQUIRE(p4 == Tuple::Point(15, 0, 7));
+}
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("[04][Trans] Chained transformation must be applied in rever order", "[Matrix]")
+{
+    Tuple p = Tuple::Point(1, 0, 1);
+    Matrix a = Matrix::rotation_x(std::numbers::pi / 2);
+    Matrix b = Matrix::scaling(5, 5, 5);
+    Matrix c = Matrix::translation(10, 5, 7);
+    Matrix t = c * b * a;
+
+    REQUIRE(t * p == Tuple::Point(15, 0, 7));
+}