diff --git a/HandmadeMath.h b/HandmadeMath.h index cb22e0e..596f8f1 100644 --- a/HandmadeMath.h +++ b/HandmadeMath.h @@ -168,8 +168,12 @@ longer has any effect. 1.5.1 (*) Fixed a bug with uninitialized elements in HMM_LookAt. - - + 1.6.0 + (*) Added array subscript operators for vector and matrix types in + C++. This is provided as a convenience, but be aware that it may + incur an extra function call in unoptimized builds. + + LICENSE This software is in the public domain. Where that dedication is not @@ -314,6 +318,13 @@ typedef union hmm_vec2 }; float Elements[2]; + +#ifdef __cplusplus + inline float &operator[](int Index) + { + return Elements[Index]; + } +#endif } hmm_vec2; typedef union hmm_vec3 @@ -358,6 +369,13 @@ typedef union hmm_vec3 }; float Elements[3]; + +#ifdef __cplusplus + inline float &operator[](int Index) + { + return Elements[Index]; + } +#endif } hmm_vec3; typedef union hmm_vec4 @@ -415,6 +433,13 @@ typedef union hmm_vec4 #ifdef HANDMADE_MATH__USE_SSE __m128 InternalElementsSSE; #endif + +#ifdef __cplusplus + inline float &operator[](int Index) + { + return Elements[Index]; + } +#endif } hmm_vec4; typedef union hmm_mat4 @@ -424,6 +449,21 @@ typedef union hmm_mat4 #ifdef HANDMADE_MATH__USE_SSE __m128 Rows[4]; #endif + +#ifdef __cplusplus + inline hmm_vec4 operator[](const int Index) + { + float* col = Elements[Index]; + + hmm_vec4 result; + result.Elements[0] = col[0]; + result.Elements[1] = col[1]; + result.Elements[2] = col[2]; + result.Elements[3] = col[3]; + + return result; + } +#endif } hmm_mat4; typedef union hmm_quaternion diff --git a/README.md b/README.md index d563db3..7f3a107 100644 --- a/README.md +++ b/README.md @@ -8,8 +8,9 @@ To get started, go download [the latest release](https://github.com/HandmadeMath ----- -Version | Changes | +Version | Changes | ----------------|----------------| +**1.6.0** | Added array subscript operators for vector and matrix types in C++. This is provided as a convenience, but be aware that it may incur an extra function call in unoptimized builds. **1.5.1** | Fixed a bug with uninitialized elements in HMM_LookAt. **1.5.0** | Changed internal structure for better performance and inlining. As a result, `HANDMADE_MATH_NO_INLINE` has been removed and no longer has any effect. **1.4.0** | Fixed bug when using C mode. SSE'd all vec4 operations. Removed zeroing for better performance. diff --git a/test/categories/Initialization.h b/test/categories/Initialization.h index c2616e0..99d390d 100644 --- a/test/categories/Initialization.h +++ b/test/categories/Initialization.h @@ -18,6 +18,10 @@ TEST(Initialization, Vectors) EXPECT_FLOAT_EQ(v2.Height, 2.0f); EXPECT_FLOAT_EQ(v2.Elements[0], 1.0f); EXPECT_FLOAT_EQ(v2.Elements[1], 2.0f); +#ifdef __cplusplus + EXPECT_FLOAT_EQ(v2[0], 1.0f); + EXPECT_FLOAT_EQ(v2[1], 2.0f); +#endif EXPECT_FLOAT_EQ(v2i.X, 1.0f); EXPECT_FLOAT_EQ(v2i.Y, 2.0f); @@ -29,6 +33,10 @@ TEST(Initialization, Vectors) EXPECT_FLOAT_EQ(v2i.Height, 2.0f); EXPECT_FLOAT_EQ(v2i.Elements[0], 1.0f); EXPECT_FLOAT_EQ(v2i.Elements[1], 2.0f); +#ifdef __cplusplus + EXPECT_FLOAT_EQ(v2i[0], 1.0f); + EXPECT_FLOAT_EQ(v2i[1], 2.0f); +#endif // // Test vec3 @@ -56,6 +64,11 @@ TEST(Initialization, Vectors) EXPECT_FLOAT_EQ(v3.UV.Elements[1], 2.0f); EXPECT_FLOAT_EQ(v3.VW.Elements[0], 2.0f); EXPECT_FLOAT_EQ(v3.VW.Elements[1], 3.0f); +#ifdef __cplusplus + EXPECT_FLOAT_EQ(v3[0], 1.0f); + EXPECT_FLOAT_EQ(v3[1], 2.0f); + EXPECT_FLOAT_EQ(v3[2], 3.0f); +#endif EXPECT_FLOAT_EQ(v3i.X, 1.0f); EXPECT_FLOAT_EQ(v3i.Y, 2.0f); @@ -77,6 +90,11 @@ TEST(Initialization, Vectors) EXPECT_FLOAT_EQ(v3i.UV.Elements[1], 2.0f); EXPECT_FLOAT_EQ(v3i.VW.Elements[0], 2.0f); EXPECT_FLOAT_EQ(v3i.VW.Elements[1], 3.0f); +#ifdef __cplusplus + EXPECT_FLOAT_EQ(v3i[0], 1.0f); + EXPECT_FLOAT_EQ(v3i[1], 2.0f); + EXPECT_FLOAT_EQ(v3i[2], 3.0f); +#endif // // Test vec4 @@ -107,6 +125,12 @@ TEST(Initialization, Vectors) EXPECT_FLOAT_EQ(v4.RGB.Elements[0], 1.0f); EXPECT_FLOAT_EQ(v4.RGB.Elements[1], 2.0f); EXPECT_FLOAT_EQ(v4.RGB.Elements[2], 3.0f); +#ifdef __cplusplus + EXPECT_FLOAT_EQ(v4[0], 1.0f); + EXPECT_FLOAT_EQ(v4[1], 2.0f); + EXPECT_FLOAT_EQ(v4[2], 3.0f); + EXPECT_FLOAT_EQ(v4[3], 4.0f); +#endif EXPECT_FLOAT_EQ(v4i.X, 1.0f); EXPECT_FLOAT_EQ(v4i.Y, 2.0f); @@ -130,6 +154,12 @@ TEST(Initialization, Vectors) EXPECT_FLOAT_EQ(v4i.RGB.Elements[0], 1.0f); EXPECT_FLOAT_EQ(v4i.RGB.Elements[1], 2.0f); EXPECT_FLOAT_EQ(v4i.RGB.Elements[2], 3.0f); +#ifdef __cplusplus + EXPECT_FLOAT_EQ(v4i[0], 1.0f); + EXPECT_FLOAT_EQ(v4i[1], 2.0f); + EXPECT_FLOAT_EQ(v4i[2], 3.0f); + EXPECT_FLOAT_EQ(v4i[3], 4.0f); +#endif EXPECT_FLOAT_EQ(v4v.X, 1.0f); EXPECT_FLOAT_EQ(v4v.Y, 2.0f); @@ -153,6 +183,12 @@ TEST(Initialization, Vectors) EXPECT_FLOAT_EQ(v4v.RGB.Elements[0], 1.0f); EXPECT_FLOAT_EQ(v4v.RGB.Elements[1], 2.0f); EXPECT_FLOAT_EQ(v4v.RGB.Elements[2], 3.0f); +#ifdef __cplusplus + EXPECT_FLOAT_EQ(v4v[0], 1.0f); + EXPECT_FLOAT_EQ(v4v[1], 2.0f); + EXPECT_FLOAT_EQ(v4v[2], 3.0f); + EXPECT_FLOAT_EQ(v4v[3], 4.0f); +#endif } TEST(Initialization, MatrixEmpty) @@ -163,6 +199,9 @@ TEST(Initialization, MatrixEmpty) for (int Row = 0; Row < 4; ++Row) { EXPECT_FLOAT_EQ(m4.Elements[Column][Row], 0.0f); +#ifdef __cplusplus + EXPECT_FLOAT_EQ(m4[Column][Row], 0.0f); +#endif } } }