Make scalar_type and vector_type public in Vec.

- Add a dot product implementation.
- Test code to demonstrate dot product.
- Test code to demonstrate wrapping structs with unordered properties.

test/unit/CMakeLists.txt

@@ -3,6 +3,7 @@ project(unit CXX)
 add_executable(${PROJECT_NAME}
 	${GTEST_MAIN_CPP}
 	test_conversions.cpp
+	test_ops.cpp
 )
 
 target_link_libraries(${PROJECT_NAME}

test/unit/test_ops.cpp

@@ -0,0 +1,45 @@
+#include "sample_vectors.hpp"
+#include "vectorwrapper/vectorops.hpp"
+#include <gtest/gtest.h>
+
+struct UnorderedVector {
+	int64_t y;
+	int64_t z;
+	int64_t x;
+};
+namespace vwr {
+	template <>
+	struct VectorWrapperInfo<UnorderedVector> {
+		enum { dimensions = 3 };
+		typedef int64_t scalar_type;
+
+		enum {
+			offset_x = offsetof(UnorderedVector, x),
+			offset_y = offsetof(UnorderedVector, y),
+			offset_z = offsetof(UnorderedVector, z)
+		};
+	};
+} //namespace vwr
+
+typedef vwr::Vec<UnorderedVector> uvec3i;
+
+TEST(vwr, ops) {
+	using namespace vwr;
+
+	ivec3 a(1);
+	ivec3 b(1);
+
+	EXPECT_EQ(3, dot(a, b));
+	EXPECT_EQ(3, dot(a, a));
+
+	a = ivec3{5, 2, 8};
+	b = ivec3{6, 9, 3};
+	EXPECT_EQ(6*5+2*9+8*3, dot(a, b));
+
+	uvec3i c(7, 2, 9);
+	EXPECT_EQ(7, c.x());
+	EXPECT_EQ(2, c.y());
+	EXPECT_EQ(9, c.z());
+	EXPECT_EQ(7*5+2*2+9*8, dot(a, c));
+	EXPECT_EQ(7*6+2*9+9*3, dot(b, c));
+}