add version info

I think _copy is better and COMMON  name for duplicating/copying
vector, matrices

.gitignore

@@ -41,10 +41,14 @@ packages/
 .anjuta/*
 *.anjuta*
 config.h.*
-config.h
+/config.h
 stamp*
 COPYING
 .idea/*
 *.VC.db
 cscope.*
 *-git-ignored-file.*
+test/*.trs
+test/test_*
+*.log
+test-*

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "test/lib/cmocka"]
+	path = test/lib/cmocka
+	url = git://git.cryptomilk.org/projects/cmocka.git

.travis.yml

@@ -0,0 +1,61 @@
+language: c
+
+os:
+  - linux
+  - osx
+
+sudo: required
+dist: trusty
+
+compiler:
+  - clang
+  - gcc
+
+matrix:
+  fast_finish: true
+  exclude:
+    # Skip GCC builds on macOS.
+    - os: osx
+      compiler: gcc
+  include:
+    # Additional GCC builds for code coverage.
+    - os: linux
+      compiler: gcc
+      env: CODE_COVERAGE=ON
+
+cache:
+  apt: true
+
+addons:
+  apt:
+    packages:
+      - clang-3.6
+      - lcov
+
+branches:
+  only:
+    - master
+
+before_install:
+  - pip install --user cpp-coveralls
+
+script:
+  - sh ./build-deps.sh
+  - sh ./autogen.sh
+  - if [[ "$CC" == "gcc" && "$CODE_COVERAGE" == "ON" ]]; then
+      ./configure CFLAGS="-ftest-coverage -fprofile-arcs";
+    else
+      ./configure;
+    fi
+  - make
+  - make check
+
+after_success:
+  - if [[ "$CC" == "gcc" && "$CODE_COVERAGE" == "ON" ]]; then
+      coveralls
+        --build-root .
+        --exclude lib
+        --exclude test
+        --gcov-options '\-lp'
+        --verbose;
+    fi

README.md

@@ -1,7 +1,17 @@
 # 🎥 OpenGL Mathematics (glm) for `C`
+[![Build Status](https://travis-ci.org/recp/cglm.svg?branch=master)](https://travis-ci.org/recp/cglm)
+[![Build status](https://ci.appveyor.com/api/projects/status/av7l3gc0yhfex8y4/branch/master?svg=true)](https://ci.appveyor.com/project/recp/cglm/branch/master)
+[![Coverage Status](https://coveralls.io/repos/github/recp/cglm/badge.svg?branch=master)](https://coveralls.io/github/recp/cglm?branch=master)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/6a62b37d5f214f178ebef269dc4a6bf1)](https://www.codacy.com/app/recp/cglm?utm_source=github.com&utm_medium=referral&utm_content=recp/cglm&utm_campaign=Badge_Grade)
 
 The original glm library is for C++ only (templates, namespaces, classes...), this library targeted to C99 but currently you can use it for C89 safely by language extensions e.g `__register`
 
+#### Note for previous versions:
+
+- _dup (duplicate) is changed to _copy. For instance `glm_vec_dup -> glm_vec_copy`
+- OpenGL related functions are dropped to make this lib platform/third-party independent
+- make sure you have latest version and feel free to report bugs, troubles
+
 #### Note for C++ developers:
 If you don't aware about original GLM library yet, you may also want to look at:
 https://github.com/g-truc/glm
@@ -22,7 +32,7 @@ https://github.com/g-truc/glm
   </tbody>
 </table>
 
-##Features
+## Features
 - general purpose matrix operations (mat4, mat3)
 - chain matrix multiplication (square only)
 - general purpose vector operations (cross, dot, rotate, proj, angle...)
@@ -39,8 +49,8 @@ https://github.com/g-truc/glm
 <hr />
 
 You have two option to call a function/operation: inline or library call (link)
-Almost all functions are marked inline (always_inline) so compiler probably will inline. 
-To call pre-compiled version, just use `glmc_` (c stands for 'call') instead of `glm_`. 
+Almost all functions are marked inline (always_inline) so compiler probably will inline.
+To call pre-compiled version, just use `glmc_` (c stands for 'call') instead of `glm_`.
 
 ```C
   #include <cglm.h>        /* for inline */
@@ -76,7 +86,7 @@ glm_mul(T, R, modelMat);
 glm_inv_tr(modelMat);
 ```
 
-##License
+## License
 MIT. check the LICENSE file
 
 ## Build
@@ -84,6 +94,8 @@ MIT. check the LICENSE file
 ### Unix (Autotools)
 
 ```text
+$ sh ./build-deps.sh # run only once (dependencies)
+$
 $ sh autogen.sh
 $ ./configure
 $ make
@@ -92,11 +104,20 @@ $ [sudo] make install
 ```
 
 ### Windows (MSBuild)
+Windows related build files, project files are located in `win` folder,
+make sure you are inside `cglm/win` folder.
+Code Analysis are enabled, it may take awhile to build
 
-```text
-TODO:
+```Powershell
+$ cd win
+$ .\build.bat
 ```
-##How to use
+if `msbuild` won't work (because of multi version VS) then try to build with `devenv`:
+```Powershell
+$ devenv cglm.sln /Build Release
+```
+
+## How to use
 If you want to use inline versions of funcstions then; include main header
 ```C
 #include <cglm.h>
@@ -126,7 +147,15 @@ glmc_vec_normalize(vec);
 ```
 
 Function usage and parameters are documented inside related headers.
-##Notes
+## Notes
 
 - This library uses float types only, does not support Integers, Double... yet
 - If headers are not working properly with your compiler, IDE please open an issue, because I'm using GCC and clang to test it maybe sometimes MSVC
+
+**TODO:**
+- [ ] Unit tests
+- [ ] Unit tests for comparing cglm with glm results
+- [x] Add version info
+- [ ] Unaligned operations (e.g. `glm_umat4_mul`)
+- [ ] Extra documentation
+- [ ] ARM Neon Arch

appveyor.yml

@@ -0,0 +1,7 @@
+image: Visual Studio 2017
+
+build_script:
+- ps: >-
+    cd win
+
+    .\build.bat

build-deps.sh

@@ -0,0 +1,30 @@
+#! /bin/sh
+#
+# Copyright (c), Recep Aslantas.
+#
+# MIT License (MIT), http://opensource.org/licenses/MIT
+# Full license can be found in the LICENSE file
+#
+
+# check if deps are pulled
+git submodule update --init --recursive
+
+# fix glibtoolize
+
+cd $(dirname "$0")
+
+if [ "$(uname)" = "Darwin" ]; then
+  libtoolBin=$(which glibtoolize)
+  libtoolBinDir=$(dirname "${libtoolBin}")
+  ln -s $libtoolBin "${libtoolBinDir}/libtoolize"
+fi
+
+# general deps: gcc make autoconf automake libtool cmake
+
+# test - cmocka
+cd ./test/lib/cmocka
+mkdir build
+cd build
+cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Debug ..
+make -j8
+cd ../../../../

configure.ac

@@ -7,7 +7,7 @@
 #*****************************************************************************
 
 AC_PREREQ([2.69])
-AC_INIT([cglm], [0.1.0], [info@recp.me])
+AC_INIT([cglm], [0.2.0], [info@recp.me])
 AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects])
 
 AC_CONFIG_MACRO_DIR([m4])

include/call/cglmc-mat.h

@@ -15,11 +15,11 @@ extern "C" {
 
 CGLM_EXPORT
 void
-glmc_mat4_udup(mat4 mat, mat4 dest);
+glmc_mat4_ucopy(mat4 mat, mat4 dest);
 
 CGLM_EXPORT
 void
-glmc_mat4_dup(mat4 mat, mat4 dest);
+glmc_mat4_copy(mat4 mat, mat4 dest);
 
 CGLM_EXPORT
 void

include/call/cglmc-mat3.h

@@ -15,7 +15,7 @@ extern "C" {
 
 CGLM_EXPORT
 void
-glmc_mat3_dup(mat3 mat, mat3 dest);
+glmc_mat3_copy(mat3 mat, mat3 dest);
 
 CGLM_EXPORT
 void

include/call/cglmc-vec.h

@@ -15,15 +15,15 @@ extern "C" {
 
 CGLM_EXPORT
 void
-glmc_vec_dup(vec3 a, vec3 dest);
+glmc_vec_copy(vec3 a, vec3 dest);
 
 CGLM_EXPORT
 void
-glmc_vec4_dup3(vec4 a, vec3 dest);
+glmc_vec4_copy3(vec4 a, vec3 dest);
 
 CGLM_EXPORT
 void
-glmc_vec4_dup(vec4 v, vec4 dest);
+glmc_vec4_copy(vec4 v, vec4 dest);
 
 CGLM_EXPORT
 float
@@ -117,6 +117,18 @@ CGLM_EXPORT
 void
 glmc_vec_proj(vec3 a, vec3 b, vec3 dest);
 
+CGLM_INLINE
+void
+glmc_vec_center(vec3 v1, vec3 v2, vec3 dest);
+
+CGLM_EXPORT
+float
+glmc_vec_distance(vec3 v1, vec3 v2);
+
+CGLM_EXPORT
+float
+glmc_vec4_distance(vec4 v1, vec4 v2);
+
 #ifdef __cplusplus
 }
 #endif

include/cglm-affine-mat.h

@@ -87,7 +87,7 @@ glm_inv_tr(mat4 mat) {
   /* translate */
   glm_mat3_mulv(r, mat[3], t);
   glm_vec_flipsign(t);
-  glm_vec_dup(t, mat[3]);
+  glm_vec_copy(t, mat[3]);
 #endif
 }
 

include/cglm-affine.h

@@ -121,6 +121,13 @@ glm_translate_z(mat4 m, float to) {
 #endif
 }
 
+CGLM_INLINE
+void
+glm_translate_make(mat4 m, vec3 v) {
+  mat4 t = GLM_MAT4_IDENTITY_INIT;
+  glm_translate_to(t, v, m);
+}
+
 /* scale */
 
 CGLM_INLINE
@@ -130,7 +137,14 @@ glm_scale_to(mat4 m, vec3 v, mat4 dest) {
   glm_vec4_scale(m[1], v[1], dest[1]);
   glm_vec4_scale(m[2], v[2], dest[2]);
 
-  glm_vec4_dup(m[3], dest[3]);
+  glm_vec4_copy(m[3], dest[3]);
+}
+
+CGLM_INLINE
+void
+glm_scale_make(mat4 m, vec3 v) {
+  mat4 t = GLM_MAT4_IDENTITY_INIT;
+  glm_scale_to(t, v, m);
 }
 
 CGLM_INLINE
@@ -267,9 +281,9 @@ glm_rotate_ndc(mat4 m, float angle, vec3 axis_ndc) {
   glm_vec4_scale(m[2], rot[2][2], tmp[0]);
   glm_vec4_add(tmp[3], tmp[0],    tmp[3]);
 
-  glm_vec4_dup(tmp[1], m[0]);
-  glm_vec4_dup(tmp[2], m[1]);
-  glm_vec4_dup(tmp[3], m[2]);
+  glm_vec4_copy(tmp[1], m[0]);
+  glm_vec4_copy(tmp[2], m[1]);
+  glm_vec4_copy(tmp[3], m[2]);
 }
 
 CGLM_INLINE
@@ -325,10 +339,10 @@ glm_decompose_rs(mat4 m, mat4 r, vec3 s) {
   vec4 t = {0.0f, 0.0f, 0.0f, 1.0f};
   vec3 v;
 
-  glm_vec4_dup(m[0], r[0]);
-  glm_vec4_dup(m[1], r[1]);
-  glm_vec4_dup(m[2], r[2]);
-  glm_vec4_dup(t,    r[3]);
+  glm_vec4_copy(m[0], r[0]);
+  glm_vec4_copy(m[1], r[1]);
+  glm_vec4_copy(m[2], r[2]);
+  glm_vec4_copy(t,    r[3]);
 
   s[0] = glm_vec_norm(m[0]);
   s[1] = glm_vec_norm(m[1]);
@@ -359,7 +373,7 @@ glm_decompose_rs(mat4 m, mat4 r, vec3 s) {
 CGLM_INLINE
 void
 glm_decompose(mat4 m, vec4 t, mat4 r, vec3 s) {
-  glm_vec4_dup(m[3], t);
+  glm_vec4_copy(m[3], t);
   glm_decompose_rs(m, r, s);
 }
 

include/cglm-cam.h

@@ -9,8 +9,18 @@
 #define cglm_vcam_h
 
 #include "cglm-common.h"
-#include "cglm-platform.h"
 
+/*!
+ * @brief set up perspective peprojection matrix
+ *
+ * @param[in]  left    viewport.left
+ * @param[in]  right   viewport.right
+ * @param[in]  bottom  viewport.bottom
+ * @param[in]  top     viewport.top
+ * @param[in]  nearVal near clipping plane
+ * @param[in]  farVal  far clipping plane
+ * @param[out] dest    result matrix
+ */
 CGLM_INLINE
 void
 glm_frustum(float left,
@@ -19,7 +29,7 @@ glm_frustum(float left,
             float top,
             float nearVal,
             float farVal,
-            mat4 dest) {
+            mat4  dest) {
   float rl, tb, fn;
 
   glm__memzero(float, dest, sizeof(mat4));
@@ -37,6 +47,17 @@ glm_frustum(float left,
   dest[3][2] = -2.0f * farVal * nearVal * fn;
 }
 
+/*!
+ * @brief set up orthographic projection matrix
+ *
+ * @param[in]  left    viewport.left
+ * @param[in]  right   viewport.right
+ * @param[in]  bottom  viewport.bottom
+ * @param[in]  top     viewport.top
+ * @param[in]  nearVal near clipping plane
+ * @param[in]  farVal  far clipping plane
+ * @param[out] dest    result matrix
+ */
 CGLM_INLINE
 void
 glm_ortho(float left,
@@ -45,7 +66,7 @@ glm_ortho(float left,
           float top,
           float nearVal,
           float farVal,
-          mat4 dest) {
+          mat4  dest) {
   float rl, tb, fn;
 
   glm__memzero(float, dest, sizeof(mat4));
@@ -63,69 +84,84 @@ glm_ortho(float left,
   dest[3][3] = 1.0f;
 }
 
+/*!
+ * @brief set up unit orthographic projection matrix
+ *
+ * @param[in]  aspect aspect ration ( width / height )
+ * @param[out] dest   result matrix
+ */
 CGLM_INLINE
 void
-glm_ortho_default(mat4 dest) {
-  int32_t rect[4];
-  float aspectRatio;
-
-  glm_platfom_get_viewport_rect(rect);
-  aspectRatio = (float)rect[2]/rect[3];
-
-  if (rect[2] >= rect[3]) {
-    glm_ortho(-1.0f * aspectRatio,
-               1.0f * aspectRatio,
+glm_ortho_default(float aspect,
+                  mat4  dest) {
+  if (aspect >= 1.0f) {
+    glm_ortho(-1.0f * aspect,
+               1.0f * aspect,
               -1.0f,
                1.0f,
               -100.0f,
                100.0f,
                dest);
-  } else {
-    glm_ortho(-1.0f,
-               1.0f,
-              -1.0f / aspectRatio,
-               1.0f / aspectRatio,
-              -100.0f,
-               100.0f,
-               dest);
+	return;
   }
+
+  glm_ortho(-1.0f,
+             1.0f,
+            -1.0f / aspect,
+             1.0f / aspect,
+            -100.0f,
+             100.0f,
+             dest);
 }
 
+/*!
+ * @brief set up orthographic projection matrix with given CUBE size
+ *
+ * @param[in]  aspect aspect ratio ( width / height )
+ * @param[in]  size   cube size
+ * @param[out] dest   result matrix
+ */
 CGLM_INLINE
 void
-glm_ortho_default_s(float size, mat4 dest) {
-  int32_t rect[4];
-  float aspectRatio;
-
-  glm_platfom_get_viewport_rect(rect);
-  aspectRatio = (float)rect[2]/rect[3];
-
-  if (rect[2] >= rect[3]) {
-    glm_ortho(-size * aspectRatio,
-               size * aspectRatio,
+glm_ortho_default_s(float aspect,
+                    float size,
+                    mat4  dest) {
+  if (aspect >= 1.0f) {
+    glm_ortho(-size * aspect,
+               size * aspect,
               -size,
                size,
               -size - 100.0f,
                size + 100.0f,
                dest);
-  } else {
-    glm_ortho(-size,
-               size,
-              -size / aspectRatio,
-               size / aspectRatio,
-              -size - 100.0f,
-               size + 100.0f,
-               dest);
+	return;
   }
+
+  glm_ortho(-size,
+             size,
+            -size / aspect,
+             size / aspect,
+            -size - 100.0f,
+             size + 100.0f,
+             dest);
 }
 
+/*!
+ * @brief set up perspective projection matrix
+ *
+ * @param[in]  fovy    field of view angle
+ * @param[in]  aspect  aspect ratio ( width / height )
+ * @param[in]  nearVal near clipping plane
+ * @param[in]  farVal  far clipping planes
+ * @param[out] dest    result matrix
+ */
 CGLM_INLINE
 void
 glm_perspective(float fovy,
                 float aspect,
                 float nearVal,
                 float farVal,
-                mat4 dest) {
+                mat4  dest) {
   float f, fn;
 
   glm__memzero(float, dest, sizeof(mat4));
@@ -140,31 +176,50 @@ glm_perspective(float fovy,
   dest[3][2] = 2 * nearVal * farVal * fn;
 }
 
+/*!
+ * @brief set up perspective projection matrix with default near/far
+ *        and angle values
+ *
+ * @param[in]  aspect aspect ratio ( width / height )
+ * @param[out] dest   result matrix
+ */
 CGLM_INLINE
 void
-glm_perspective_default(mat4 dest) {
-  int32_t rect[4];
-  glm_platfom_get_viewport_rect(rect);
-  
+glm_perspective_default(float aspect,
+                        mat4  dest) {
   glm_perspective((float)CGLM_PI_4,
-                  (float)rect[2]/rect[3],
+                  aspect,
                   0.01f,
                   100.0f,
                   dest);
 }
 
+/*!
+ * @brief resize perspective matrix by aspect ratio ( width / height )
+ *        this very make easy to resize proj matrix when window, viewport
+ *        reized
+ *
+ * @param[in]      aspect aspect ratio ( width / height )
+ * @param[in, out] proj   perspective projection matrix
+ */
 CGLM_INLINE
 void
-glm_perspective_resize(mat4 proj) {
-  int32_t rect[4];
-
+glm_perspective_resize(float aspect,
+                       mat4  proj) {
   if (proj[0][0] == 0)
     return;
 
-  glm_platfom_get_viewport_rect(rect);
-  proj[0][0] = (float)proj[1][1] * rect[3] / rect[2];
+  proj[0][0] = proj[1][1] / aspect;
 }
 
+/*!
+ * @brief set up view matrix
+ *
+ * @param[in]  eye    eye vector
+ * @param[in]  center center vector
+ * @param[in]  up     up vector
+ * @param[out] dest   result matrix
+ */
 CGLM_INLINE
 void
 glm_lookat(vec3 eye,

include/cglm-euler.h

@@ -64,7 +64,7 @@ glm_euler_angles(mat4 m, vec3 dest) {
       path = (fabsf(a[0][0]) + fabsf(a[0][1]) + fabsf(a[0][2])) >=
                (fabsf(a[1][0]) + fabsf(a[1][1]) + fabsf(a[1][2]));
 
-      glm_vec_dup(a[path], dest);
+      glm_vec_copy(a[path], dest);
     } else {
       dest[0] = atan2f(m[1][0], m[2][0]);
       dest[1] = CGLM_PI_2;

include/cglm-mat.h

@@ -24,8 +24,14 @@
                                  {0.0f, 0.0f, 1.0f, 0.0f},                    \
                                  {0.0f, 0.0f, 0.0f, 1.0f}}
 
+#define GLM_MAT4_ZERO_INIT      {{0.0f, 0.0f, 0.0f, 0.0f},                    \
+                                 {0.0f, 0.0f, 0.0f, 0.0f},                    \
+                                 {0.0f, 0.0f, 0.0f, 0.0f},                    \
+                                 {0.0f, 0.0f, 0.0f, 0.0f}}
+
 /* for C only */
 #define GLM_MAT4_IDENTITY (mat4)GLM_MAT4_IDENTITY_INIT
+#define GLM_MAT4_ZERO     (mat4)GLM_MAT4_ZERO_INIT
 
 /*!
  * @brief copy all members of [mat] to [dest]
@@ -38,7 +44,7 @@
  */
 CGLM_INLINE
 void
-glm_mat4_udup(mat4 mat, mat4 dest) {
+glm_mat4_ucopy(mat4 mat, mat4 dest) {
   glm__memcpy(float, dest, mat, sizeof(mat4));
 }
 
@@ -50,7 +56,7 @@ glm_mat4_udup(mat4 mat, mat4 dest) {
  */
 CGLM_INLINE
 void
-glm_mat4_dup(mat4 mat, mat4 dest) {
+glm_mat4_copy(mat4 mat, mat4 dest) {
 #ifdef __AVX__
   _mm256_store_ps(dest[0], _mm256_load_ps(mat[0]));
   _mm256_store_ps(dest[2], _mm256_load_ps(mat[2]));
@@ -60,7 +66,7 @@ glm_mat4_dup(mat4 mat, mat4 dest) {
   _mm_store_ps(dest[2], _mm_load_ps(mat[2]));
   _mm_store_ps(dest[3], _mm_load_ps(mat[3]));
 #else
-  glm_mat4_udup(mat, dest);
+  glm_mat4_ucopy(mat, dest);
 #endif
 }
 
@@ -242,7 +248,7 @@ glm_mat4_mulv(mat4 m, vec4 v, vec4 dest) {
   res[1] = m[0][1] * v[0] + m[1][1] * v[1] + m[2][1] * v[2] + m[3][1] * v[3];
   res[2] = m[0][2] * v[0] + m[1][2] * v[1] + m[2][2] * v[2] + m[3][2] * v[3];
   res[3] = m[0][3] * v[0] + m[1][3] * v[1] + m[2][3] * v[2] + m[3][3] * v[3];
-  glm_vec4_dup(res, dest);
+  glm_vec4_copy(res, dest);
 #endif
 }
 
@@ -260,7 +266,7 @@ glm_mat4_mulv3(mat4 m, vec3 v, vec3 dest) {
   res[0] = m[0][0] * v[0] + m[1][0] * v[1] + m[2][0] * v[2];
   res[1] = m[0][1] * v[0] + m[1][1] * v[1] + m[2][1] * v[2];
   res[2] = m[0][2] * v[0] + m[1][2] * v[1] + m[2][2] * v[2];
-  glm_vec_dup(res, dest);
+  glm_vec_copy(res, dest);
 }
 
 /*!
@@ -477,9 +483,9 @@ CGLM_INLINE
 void
 glm_mat4_swap_col(mat4 mat, int col1, int col2) {
   vec4 tmp;
-  glm_vec4_dup(mat[col1], tmp);
-  glm_vec4_dup(mat[col2], mat[col1]);
-  glm_vec4_dup(tmp, mat[col2]);
+  glm_vec4_copy(mat[col1], tmp);
+  glm_vec4_copy(mat[col2], mat[col1]);
+  glm_vec4_copy(tmp, mat[col2]);
 }
 
 /*!

include/cglm-mat3.h

@@ -14,9 +14,14 @@
 #define GLM_MAT3_IDENTITY_INIT  {{1.0f, 0.0f, 0.0f},                          \
                                  {0.0f, 1.0f, 0.0f},                          \
                                  {0.0f, 0.0f, 1.0f}}
+#define GLM_MAT3_ZERO_INIT      {{0.0f, 0.0f, 0.0f},                          \
+                                 {0.0f, 0.0f, 0.0f},                          \
+                                 {0.0f, 0.0f, 0.0f}}
+
 
 /* for C only */
 #define GLM_MAT3_IDENTITY (mat3)GLM_MAT3_IDENTITY_INIT
+#define GLM_MAT3_ZERO     (mat3)GLM_MAT3_ZERO_INIT
 
 /*!
  * @brief copy all members of [mat] to [dest]
@@ -26,7 +31,7 @@
  */
 CGLM_INLINE
 void
-glm_mat3_dup(mat3 mat, mat3 dest) {
+glm_mat3_copy(mat3 mat, mat3 dest) {
   glm__memcpy(float, dest, mat, sizeof(mat3));
 }
 
@@ -217,9 +222,9 @@ CGLM_INLINE
 void
 glm_mat3_swap_col(mat3 mat, int col1, int col2) {
   vec3 tmp;
-  glm_vec_dup(mat[col1], tmp);
-  glm_vec_dup(mat[col2], mat[col1]);
-  glm_vec_dup(tmp, mat[col2]);
+  glm_vec_copy(mat[col1], tmp);
+  glm_vec_copy(mat[col2], mat[col1]);
+  glm_vec_copy(tmp, mat[col2]);
 }
 
 /*!

include/cglm-opengl.h

@@ -1,20 +0,0 @@
-/*
- * Copyright (c), Recep Aslantas.
- *
- * MIT License (MIT), http://opensource.org/licenses/MIT
- * Full license can be found in the LICENSE file
- */
-
-#ifndef cglm_mat_opengl_h
-#define cglm_mat_opengl_h
-
-#include "cglm-common.h"
-#include "cglm-platform.h"
-
-CGLM_INLINE
-void
-glm_uniform(int32_t location, mat4 m) {
-  glm_platform_uniform_mat4fv(location, m[0]);
-}
-
-#endif /* cglm_mat_opengl_h */

include/cglm-platform.h

@@ -1,45 +0,0 @@
-/*
- * Copyright (c), Recep Aslantas.
- *
- * MIT License (MIT), http://opensource.org/licenses/MIT
- * Full license can be found in the LICENSE file
- */
-
-#ifndef cglm_platform_h
-#define cglm_platform_h
-
-#include "cglm-common.h"
-
-#ifdef __APPLE__
-#  include <OpenGL/gl3.h>
-#else
-#  ifdef _WIN32
-#    define WIN32_LEAN_AND_MEAN
-#    include <windows.h>
-#  endif
-#  include <GL/gl.h>
-#endif
-
-#ifdef _WIN32
-extern
-void
-glUniformMatrix4fv(GLint location,
-                   GLsizei count,
-                   GLboolean transpose,
-                   const GLfloat *value);
-#endif
-
-CGLM_INLINE
-void
-glm_platform_uniform_mat4fv(int32_t location,
-                            const float *value) {
-  glUniformMatrix4fv(location, 1, GL_FALSE, value);
-}
-
-CGLM_INLINE
-void
-glm_platfom_get_viewport_rect(int32_t *rect) {
-  glGetIntegerv(GL_VIEWPORT, rect);
-}
-
-#endif /* cglm_platform_h */

include/cglm-quat.h

@@ -19,7 +19,8 @@
 CGLM_INLINE
 void
 glm_quat_identity(versor q) {
-  glm_vec4_dup(GLM_QUAT_IDENTITY, q);
+  versor v = GLM_QUAT_IDENTITY_INIT;
+  glm_vec4_copy(v, q);
 }
 
 CGLM_INLINE
@@ -31,7 +32,7 @@ glm_quat(versor q,
          float  z) {
   float a, c, s;
 
-  a = angle / 2.0f;
+  a = angle * 0.5f;
   c = cosf(a);
   s = sinf(a);
 
@@ -48,7 +49,7 @@ glm_quatv(versor q,
           vec3   v) {
   float a, c, s;
 
-  a = angle / 2.0f;
+  a = angle * 0.5f;
   c = cosf(a);
   s = sinf(a);
 
@@ -99,23 +100,33 @@ CGLM_INLINE
 void
 glm_quat_mat4(versor q, mat4 dest) {
   float w, x, y, z;
+  float xx, yy, zz;
+  float xy, yz, xz;
+  float wx, wy, wz;
 
   w = q[0];
   x = q[1];
   y = q[2];
   z = q[3];
 
-  dest[0][0] = 1.0f - 2.0f * (y * y + z * z);
-  dest[0][1] = 2.0f * (x * y + w * z);
-  dest[0][2] = 2.0f * (x * z - w * y);
-  dest[0][3] = 0.0f;
-  dest[1][0] = 2.0f * (x * y - w * z);
-  dest[1][1] = 1.0f - 2.0f * (x * x + z * z);
-  dest[1][2] = 2.0f * (y * z + w * x);
+  xx = 2.0f * x * x;   xy = 2.0f * x * y;   wx = 2.0f * w * x;
+  yy = 2.0f * y * y;   yz = 2.0f * y * z;   wy = 2.0f * w * y;
+  zz = 2.0f * z * z;   xz = 2.0f * x * z;   wz = 2.0f * w * z;
+
+  dest[0][0] = 1.0f - yy - zz;
+  dest[1][1] = 1.0f - xx - zz;
+  dest[2][2] = 1.0f - xx - yy;
+
+  dest[0][1] = xy + wz;
+  dest[1][2] = yz + wx;
+  dest[2][0] = xz + wy;
+
+  dest[1][0] = xy - wz;
+  dest[2][1] = yz - wx;
+  dest[0][2] = xz - wy;
+
   dest[1][3] = 0.0f;
-  dest[2][0] = 2.0f * (x * z + w * y);
-  dest[2][1] = 2.0f * (y * z - w * x);
-  dest[2][2] = 1.0f - 2.0f * (x * x + y * y);
+  dest[0][3] = 0.0f;
   dest[2][3] = 0.0f;
   dest[3][0] = 0.0f;
   dest[3][1] = 0.0f;

include/cglm-util.h

@@ -45,4 +45,10 @@ glm_make_deg(float *rad) {
   *rad = *rad * 180.0f / CGLM_PI;
 }
 
+CGLM_INLINE
+float
+glm_pow2(float x) {
+  return x * x;
+}
+
 #endif /* cglm_util_h */

include/cglm-vec-ext.h

@@ -59,7 +59,7 @@ glm_vec_broadcast(float val, vec3 d) {
 
 CGLM_INLINE
 void
-glm_vec4_broadcast(float val, vec3 d) {
+glm_vec4_broadcast(float val, vec4 d) {
 #if defined( __SSE__ ) || defined( __SSE2__ )
   _mm_store_ps(d, _mm_set1_ps(val));
 #else
@@ -148,7 +148,7 @@ float
 glm_vec4_min(vec4 v) {
   float min;
 
-  min = glm_vec_max(v);
+  min = glm_vec_min(v);
   if (v[3] < min)
     min = v[3];
 

include/cglm-vec.h

@@ -16,6 +16,7 @@
 #include "cglm-common.h"
 #include "cglm-vec-ext.h"
 #include "arch/simd/cglm-intrin.h"
+#include "cglm-util.h"
 
 /*!
  * @brief copy all members of [a] to [dest]
@@ -25,7 +26,7 @@
  */
 CGLM_INLINE
 void
-glm_vec_dup(vec3 a, vec3 dest) {
+glm_vec_copy(vec3 a, vec3 dest) {
   dest[0] = a[0];
   dest[1] = a[1];
   dest[2] = a[2];
@@ -39,7 +40,7 @@ glm_vec_dup(vec3 a, vec3 dest) {
  */
 CGLM_INLINE
 void
-glm_vec4_dup3(vec4 a, vec3 dest) {
+glm_vec4_copy3(vec4 a, vec3 dest) {
   dest[0] = a[0];
   dest[1] = a[1];
   dest[2] = a[2];
@@ -53,7 +54,7 @@ glm_vec4_dup3(vec4 a, vec3 dest) {
  */
 CGLM_INLINE
 void
-glm_vec4_dup(vec4 v, vec4 dest) {
+glm_vec4_copy(vec4 v, vec4 dest) {
 #if defined( __SSE__ ) || defined( __SSE2__ )
   _mm_store_ps(dest, _mm_load_ps(v));
 #else
@@ -475,7 +476,7 @@ glm_vec_rotate_m4(mat4 m, vec3 v, vec3 dest) {
   res[1] = x[1] * v[0] + y[1] * v[1] + z[1] * v[2];
   res[2] = x[2] * v[0] + y[2] * v[1] + z[2] * v[2];
 
-  glm_vec_dup(res, dest);
+  glm_vec_copy(res, dest);
 }
 
 /*!
@@ -493,4 +494,49 @@ glm_vec_proj(vec3 a, vec3 b, vec3 dest) {
                 dest);
 }
 
+/**
+ * @brief find center point of two vector
+ *
+ * @param[in]  v1
+ * @param[in]  v2
+ * @param[out] dest center point
+ */
+CGLM_INLINE
+void
+glm_vec_center(vec3 v1, vec3 v2, vec3 dest) {
+  glm_vec_add(v1, v2, dest);
+  glm_vec_scale(dest, 0.5f, dest);
+}
+
+/**
+ * @brief distance between two vectors
+ *
+ * @param[in] v1
+ * @param[in] v2
+ * @return returns distance
+ */
+CGLM_INLINE
+float
+glm_vec_distance(vec3 v1, vec3 v2) {
+  return sqrtf(glm_pow2(v2[0] - v1[0])
+               + glm_pow2(v2[1] - v1[1])
+               + glm_pow2(v2[2] - v1[2]));
+}
+
+/**
+ * @brief distance between two vectors
+ *
+ * @param[in] v1
+ * @param[in] v2
+ * @return returns distance
+ */
+CGLM_INLINE
+float
+glm_vec4_distance(vec4 v1, vec4 v2) {
+  return sqrtf(glm_pow2(v2[0] - v1[0])
+               + glm_pow2(v2[1] - v1[1])
+               + glm_pow2(v2[2] - v1[2])
+               + glm_pow2(v2[3] - v1[3]));
+}
+
 #endif /* cglm_vec_h */

include/cglm-version.h

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+#ifndef cglm_version_h
+#define cglm_version_h
+
+#define CGLM_VERSION_MAJOR 0
+#define CGLM_VERSION_MINOR 2
+#define CGLM_VERSION_PATCH 0
+
+#endif /* cglm_version_h */

makefile.am

@@ -18,7 +18,22 @@ AM_CFLAGS = -Wall \
 lib_LTLIBRARIES = libcglm.la
 libcglm_la_LDFLAGS = -no-undefined -version-info 0:1:0
 
-nobase_include_HEADERS = include/cglm.h \
+checkLDFLAGS = -L./.libs \
+               -L./test/lib/cmocka/build/src \
+               -lcmocka \
+               -lm \
+               -lcglm
+checkCFLAGS = -I./test/lib/cmocka/include \
+              -I./include
+
+check_PROGRAMS = test/test_mat4
+TESTS = $(check_PROGRAMS)
+
+test_test_mat4_LDFLAGS = $(checkLDFLAGS)
+test_test_mat4_CFLAGS  = $(checkCFLAGS)
+
+nobase_include_HEADERS = include/cglm-version.h \
+                         include/cglm.h \
                          include/cglm-call.h \
                          include/cglm-cam.h \
                          include/cglm-io.h \
@@ -32,8 +47,6 @@ nobase_include_HEADERS = include/cglm.h \
                          include/cglm-quat.h \
                          include/cglm-mat.h \
                          include/cglm-affine-mat.h \
-                         include/cglm-platform.h \
-                         include/cglm-opengl.h \
                          include/arch/simd/cglm-mat-simd-avx.h \
                          include/arch/simd/cglm-affine-mat-avx.h \
                          include/arch/simd/cglm-quat-simd.h \
@@ -59,3 +72,8 @@ libcglm_la_SOURCES=\
     src/cglm-vec.c \
     src/cglm-mat3.c \
     src/cglm-mat.c
+
+test_test_mat4_SOURCES=test/src/test_mat4.c
+
+all-local:
+	sh ./post-build.sh

post-build.sh

@@ -0,0 +1,19 @@
+#! /bin/sh
+#
+# Copyright (c), Recep Aslantas.
+#
+# MIT License (MIT), http://opensource.org/licenses/MIT
+# Full license can be found in the LICENSE file
+#
+
+cd $(dirname "$0")
+
+mkdir -p .libs
+
+if [ "$(uname)" = "Darwin" ]; then
+  ln -sf $(pwd)/test/lib/cmocka/build/src/libcmocka.0.dylib \
+      .libs/libcmocka.0.dylib;
+else
+  ln -sf $(pwd)/test/lib/cmocka/build/src/libcmocka.so.0 \
+      .libs/libcmocka.so.0;
+fi

src/cglm-mat.c

@@ -9,14 +9,14 @@
 
 CGLM_EXPORT
 void
-glmc_mat4_udup(mat4 mat, mat4 dest) {
-  glm_mat4_dup(mat, dest);
+glmc_mat4_ucopy(mat4 mat, mat4 dest) {
+  glm_mat4_copy(mat, dest);
 }
 
 CGLM_EXPORT
 void
-glmc_mat4_dup(mat4 mat, mat4 dest) {
-  glm_mat4_dup(mat, dest);
+glmc_mat4_copy(mat4 mat, mat4 dest) {
+  glm_mat4_copy(mat, dest);
 }
 
 CGLM_EXPORT

src/cglm-mat3.c

@@ -9,8 +9,8 @@
 
 CGLM_EXPORT
 void
-glmc_mat3_dup(mat3 mat, mat3 dest) {
-  glm_mat3_dup(mat, dest);
+glmc_mat3_copy(mat3 mat, mat3 dest) {
+  glm_mat3_copy(mat, dest);
 }
 
 CGLM_EXPORT

src/cglm-vec.c

@@ -9,20 +9,20 @@
 
 CGLM_EXPORT
 void
-glmc_vec_dup(vec3 a, vec3 dest) {
-  glm_vec_dup(a, dest);
+glmc_vec_copy(vec3 a, vec3 dest) {
+  glm_vec_copy(a, dest);
 }
 
 CGLM_EXPORT
 void
-glmc_vec4_dup3(vec4 a, vec3 dest) {
-  glm_vec4_dup3(a, dest);
+glmc_vec4_copy3(vec4 a, vec3 dest) {
+  glm_vec4_copy3(a, dest);
 }
 
 CGLM_EXPORT
 void
-glmc_vec4_dup(vec4 v, vec4 dest) {
-  glm_vec4_dup(v, dest);
+glmc_vec4_copy(vec4 v, vec4 dest) {
+  glm_vec4_copy(v, dest);
 }
 
 CGLM_EXPORT
@@ -162,3 +162,21 @@ void
 glmc_vec_proj(vec3 a, vec3 b, vec3 dest) {
   glm_vec_proj(a, b, dest);
 }
+
+CGLM_EXPORT
+void
+glmc_vec_center(vec3 v1, vec3 v2, vec3 dest) {
+  glm_vec_center(v1, v2, dest);
+}
+
+CGLM_EXPORT
+float
+glmc_vec_distance(vec3 v1, vec3 v2) {
+  return glm_vec_distance(v1, v2);
+}
+
+CGLM_EXPORT
+float
+glmc_vec4_distance(vec4 v1, vec4 v2) {
+  return glm_vec4_distance(v1, v2);
+}

src/config.h

@@ -0,0 +1,22 @@
+/*
+* Copyright (c), Recep Aslantas.
+*
+* MIT License (MIT), http://opensource.org/licenses/MIT
+* Full license can be found in the LICENSE file
+*/
+
+#ifndef cglm__config__h_
+#define cglm__config__h_
+
+#if defined(_WIN32) || defined(WIN32)
+
+/* Exclude rarely-used stuff from Windows headers */
+#  define WIN32_LEAN_AND_MEAN 
+#  include <SDKDDKVer.h>
+
+/* Windows Header Files: */
+#  include <windows.h>
+
+#endif
+
+#endif /* cglm__config__h_ */

src/dllmain.c

@@ -0,0 +1,23 @@
+/*
+* Copyright (c), Recep Aslantas.
+*
+* MIT License (MIT), http://opensource.org/licenses/MIT
+* Full license can be found in the LICENSE file
+*/
+
+#include "config.h"
+
+BOOL
+APIENTRY
+DllMain(HMODULE hModule,
+	    DWORD   ul_reason_for_call,
+	    LPVOID  lpReserved) {
+	switch (ul_reason_for_call) {
+	case DLL_PROCESS_ATTACH:
+	case DLL_THREAD_ATTACH:
+	case DLL_THREAD_DETACH:
+	case DLL_PROCESS_DETACH:
+		break;
+	}
+	return TRUE;
+}

test/src/test_common.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+#ifndef test_common_h
+#define test_common_h
+
+#include <stdarg.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <setjmp.h>
+#include <cmocka.h>
+#include <time.h>
+
+#include <cglm.h>
+#include <cglm-call.h>
+
+#define precision 0.00001f
+
+static
+void
+test_rand_mat4(mat4 dest);
+
+static
+void
+test_rand_mat4(mat4 dest) {
+  int i, j;
+
+  srand((unsigned int)time(NULL));
+  for (i = 0; i < 4; i++) {
+    for (j = 0; j < 4; j++) {
+      dest[i][j] = drand48();
+    }
+  }
+}
+
+#endif /* test_common_h */

test/src/test_mat4.c

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+#include <time.h>
+#include <stdlib.h>
+#include <math.h>
+#include <float.h>
+
+#include "test_common.h"
+
+#define m 4
+#define n 4
+
+void
+test_mat4_mul(void **state) {
+  mat4  m1 = GLM_MAT4_IDENTITY_INIT;
+  mat4  m2 = GLM_MAT4_IDENTITY_INIT;
+  mat4  m3;
+  mat4  m4 = GLM_MAT4_ZERO_INIT;
+  int   i, j, k;
+
+  /* test identity matrix multiplication */
+  glm_mat4_mul(m1, m2, m3);
+  for (i = 0; i < m; i++) {
+    for (j = 0; j < n; j++) {
+      if (i == j)
+        assert_true(m3[i][j] == 1.0f);
+      else
+        assert_true(m3[i][j] == 0.0f);
+    }
+  }
+
+  /* test random matrices */
+  /* random matrices */
+  test_rand_mat4(m1);
+  test_rand_mat4(m2);
+
+  glm_mat4_mul(m1, m2, m3);
+  for (i = 0; i < m; i++) {
+    for (j = 0; j < n; j++) {
+      for (k = 0; k < m; k++)
+        /* column-major */
+        m4[i][j] += m1[k][j] * m2[i][k];
+    }
+  }
+
+  for (i = 0; i < m; i++) {
+    for (j = 0; j < n; j++) {
+      for (k = 0; k < m; k++)
+        assert_true(fabsf(m3[i][j] - m4[i][j]) <= FLT_EPSILON);
+    }
+  }
+
+  /* test pre compiled */
+  glmc_mat4_mul(m1, m2, m3);
+  for (i = 0; i < m; i++) {
+    for (j = 0; j < n; j++) {
+      for (k = 0; k < m; k++)
+        assert_true(fabsf(m3[i][j] - m4[i][j]) <= FLT_EPSILON);
+    }
+  }
+}
+
+int
+main(int argc, const char * argv[]) {
+  const struct CMUnitTest tests[] = {
+    cmocka_unit_test(test_mat4_mul)
+  };
+
+  return cmocka_run_group_tests(tests,
+                                NULL,
+                                NULL);
+}

win/.gitignore

@@ -0,0 +1,4 @@
+!cglm.sln
+!cglm.vcxproj
+!cglm.vcxproj.filters
+!packages.config

win/build.bat

@@ -0,0 +1 @@
+msbuild cglm.vcxproj /p:Configuration=Release

win/cglm.sln

@@ -0,0 +1,28 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.26403.7
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "cglm", "cglm.vcxproj", "{CA8BCAF9-CD25-4133-8F62-3D1449B5D2FC}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{CA8BCAF9-CD25-4133-8F62-3D1449B5D2FC}.Debug|x64.ActiveCfg = Debug|x64
+		{CA8BCAF9-CD25-4133-8F62-3D1449B5D2FC}.Debug|x64.Build.0 = Debug|x64
+		{CA8BCAF9-CD25-4133-8F62-3D1449B5D2FC}.Debug|x86.ActiveCfg = Debug|Win32
+		{CA8BCAF9-CD25-4133-8F62-3D1449B5D2FC}.Debug|x86.Build.0 = Debug|Win32
+		{CA8BCAF9-CD25-4133-8F62-3D1449B5D2FC}.Release|x64.ActiveCfg = Release|x64
+		{CA8BCAF9-CD25-4133-8F62-3D1449B5D2FC}.Release|x64.Build.0 = Release|x64
+		{CA8BCAF9-CD25-4133-8F62-3D1449B5D2FC}.Release|x86.ActiveCfg = Release|Win32
+		{CA8BCAF9-CD25-4133-8F62-3D1449B5D2FC}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

win/cglm.vcxproj

@@ -0,0 +1,212 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>15.0</VCProjectVersion>
+    <ProjectGuid>{CA8BCAF9-CD25-4133-8F62-3D1449B5D2FC}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
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