Replace cglm dependency with headers.

README.md

@@ -13,9 +13,9 @@ View and propagate the full CelesTrak satellite catalog in realtime.
 
 ### Linux (Compile from source)
 
-The following packages have to be installed prior to compilation: `gcc pkg-config gtk+-3.0 cglm libcurl epoxy meson`. On Debian-based systems, run the following command to install them:
+The following packages have to be installed prior to compilation: `gcc pkg-config gtk+-3.0 libcurl epoxy meson`. On Debian-based systems, run the following command to install them:
 ```
-apt-get install gcc pkg-config libgtk-3-dev libcglm-dev libcurl4-openssl-dev libepoxy-dev meson
+apt-get install gcc pkg-config libgtk-3-dev libcurl4-openssl-dev libepoxy-dev meson
 ```
 
 To compile:

lib/cglm/affine-mat.h

@@ -0,0 +1,188 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+/*
+ Functions:
+   CGLM_INLINE void glm_mul(mat4 m1, mat4 m2, mat4 dest);
+   CGLM_INLINE void glm_inv_tr(mat4 mat);
+ */
+
+#ifndef cglm_affine_mat_h
+#define cglm_affine_mat_h
+
+#include "common.h"
+#include "mat4.h"
+#include "mat3.h"
+
+#ifdef CGLM_SSE_FP
+#  include "simd/sse2/affine.h"
+#endif
+
+#ifdef CGLM_AVX_FP
+#  include "simd/avx/affine.h"
+#endif
+
+#ifdef CGLM_NEON_FP
+#  include "simd/neon/affine.h"
+#endif
+
+#ifdef CGLM_SIMD_WASM
+#  include "simd/wasm/affine.h"
+#endif
+
+/*!
+ * @brief this is similar to glm_mat4_mul but specialized to affine transform
+ *
+ * Matrix format should be:
+ *   R  R  R  X
+ *   R  R  R  Y
+ *   R  R  R  Z
+ *   0  0  0  W
+ *
+ * this reduces some multiplications. It should be faster than mat4_mul.
+ * if you are not sure about matrix format then DON'T use this! use mat4_mul
+ *
+ * @param[in]   m1    affine matrix 1
+ * @param[in]   m2    affine matrix 2
+ * @param[out]  dest  result matrix
+ */
+CGLM_INLINE
+void
+glm_mul(mat4 m1, mat4 m2, mat4 dest) {
+#if defined(__wasm__) && defined(__wasm_simd128__)
+  glm_mul_wasm(m1, m2, dest);
+#elif defined(__AVX__)
+  glm_mul_avx(m1, m2, dest);
+#elif defined( __SSE__ ) || defined( __SSE2__ )
+  glm_mul_sse2(m1, m2, dest);
+#elif defined(CGLM_NEON_FP)
+  glm_mul_neon(m1, m2, dest);
+#else
+  float a00 = m1[0][0], a01 = m1[0][1], a02 = m1[0][2], a03 = m1[0][3],
+        a10 = m1[1][0], a11 = m1[1][1], a12 = m1[1][2], a13 = m1[1][3],
+        a20 = m1[2][0], a21 = m1[2][1], a22 = m1[2][2], a23 = m1[2][3],
+        a30 = m1[3][0], a31 = m1[3][1], a32 = m1[3][2], a33 = m1[3][3],
+
+        b00 = m2[0][0], b01 = m2[0][1], b02 = m2[0][2],
+        b10 = m2[1][0], b11 = m2[1][1], b12 = m2[1][2],
+        b20 = m2[2][0], b21 = m2[2][1], b22 = m2[2][2],
+        b30 = m2[3][0], b31 = m2[3][1], b32 = m2[3][2], b33 = m2[3][3];
+
+  dest[0][0] = a00 * b00 + a10 * b01 + a20 * b02;
+  dest[0][1] = a01 * b00 + a11 * b01 + a21 * b02;
+  dest[0][2] = a02 * b00 + a12 * b01 + a22 * b02;
+  dest[0][3] = a03 * b00 + a13 * b01 + a23 * b02;
+
+  dest[1][0] = a00 * b10 + a10 * b11 + a20 * b12;
+  dest[1][1] = a01 * b10 + a11 * b11 + a21 * b12;
+  dest[1][2] = a02 * b10 + a12 * b11 + a22 * b12;
+  dest[1][3] = a03 * b10 + a13 * b11 + a23 * b12;
+
+  dest[2][0] = a00 * b20 + a10 * b21 + a20 * b22;
+  dest[2][1] = a01 * b20 + a11 * b21 + a21 * b22;
+  dest[2][2] = a02 * b20 + a12 * b21 + a22 * b22;
+  dest[2][3] = a03 * b20 + a13 * b21 + a23 * b22;
+
+  dest[3][0] = a00 * b30 + a10 * b31 + a20 * b32 + a30 * b33;
+  dest[3][1] = a01 * b30 + a11 * b31 + a21 * b32 + a31 * b33;
+  dest[3][2] = a02 * b30 + a12 * b31 + a22 * b32 + a32 * b33;
+  dest[3][3] = a03 * b30 + a13 * b31 + a23 * b32 + a33 * b33;
+#endif
+}
+
+/*!
+ * @brief this is similar to glm_mat4_mul but specialized to affine transform
+ *
+ * Right Matrix format should be:
+ *   R  R  R  0
+ *   R  R  R  0
+ *   R  R  R  0
+ *   0  0  0  1
+ *
+ * this reduces some multiplications. It should be faster than mat4_mul.
+ * if you are not sure about matrix format then DON'T use this! use mat4_mul
+ *
+ * @param[in]   m1    affine matrix 1
+ * @param[in]   m2    affine matrix 2
+ * @param[out]  dest  result matrix
+ */
+CGLM_INLINE
+void
+glm_mul_rot(mat4 m1, mat4 m2, mat4 dest) {
+#if defined(__wasm__) && defined(__wasm_simd128__)
+  glm_mul_rot_wasm(m1, m2, dest);
+#elif defined( __SSE__ ) || defined( __SSE2__ )
+  glm_mul_rot_sse2(m1, m2, dest);
+#elif defined(CGLM_NEON_FP)
+  glm_mul_rot_neon(m1, m2, dest);
+#else
+  float a00 = m1[0][0], a01 = m1[0][1], a02 = m1[0][2], a03 = m1[0][3],
+        a10 = m1[1][0], a11 = m1[1][1], a12 = m1[1][2], a13 = m1[1][3],
+        a20 = m1[2][0], a21 = m1[2][1], a22 = m1[2][2], a23 = m1[2][3],
+        a30 = m1[3][0], a31 = m1[3][1], a32 = m1[3][2], a33 = m1[3][3],
+
+        b00 = m2[0][0], b01 = m2[0][1], b02 = m2[0][2],
+        b10 = m2[1][0], b11 = m2[1][1], b12 = m2[1][2],
+        b20 = m2[2][0], b21 = m2[2][1], b22 = m2[2][2];
+
+  dest[0][0] = a00 * b00 + a10 * b01 + a20 * b02;
+  dest[0][1] = a01 * b00 + a11 * b01 + a21 * b02;
+  dest[0][2] = a02 * b00 + a12 * b01 + a22 * b02;
+  dest[0][3] = a03 * b00 + a13 * b01 + a23 * b02;
+
+  dest[1][0] = a00 * b10 + a10 * b11 + a20 * b12;
+  dest[1][1] = a01 * b10 + a11 * b11 + a21 * b12;
+  dest[1][2] = a02 * b10 + a12 * b11 + a22 * b12;
+  dest[1][3] = a03 * b10 + a13 * b11 + a23 * b12;
+
+  dest[2][0] = a00 * b20 + a10 * b21 + a20 * b22;
+  dest[2][1] = a01 * b20 + a11 * b21 + a21 * b22;
+  dest[2][2] = a02 * b20 + a12 * b21 + a22 * b22;
+  dest[2][3] = a03 * b20 + a13 * b21 + a23 * b22;
+
+  dest[3][0] = a30;
+  dest[3][1] = a31;
+  dest[3][2] = a32;
+  dest[3][3] = a33;
+#endif
+}
+
+/*!
+ * @brief inverse orthonormal rotation + translation matrix (ridig-body)
+ *
+ * @code
+ * X = | R  T |   X' = | R' -R'T |
+ *     | 0  1 |        | 0     1 |
+ * @endcode
+ *
+ * @param[in,out]  mat  matrix
+ */
+CGLM_INLINE
+void
+glm_inv_tr(mat4 mat) {
+#if defined(__wasm__) && defined(__wasm_simd128__)
+  glm_inv_tr_wasm(mat);
+#elif defined( __SSE__ ) || defined( __SSE2__ )
+  glm_inv_tr_sse2(mat);
+#elif defined(CGLM_NEON_FP)
+  glm_inv_tr_neon(mat);
+#else
+  CGLM_ALIGN_MAT mat3 r;
+  CGLM_ALIGN(8)  vec3 t;
+
+  /* rotate */
+  glm_mat4_pick3t(mat, r);
+  glm_mat4_ins3(r, mat);
+
+  /* translate */
+  glm_mat3_mulv(r, mat[3], t);
+  glm_vec3_negate(t);
+  glm_vec3_copy(t, mat[3]);
+#endif
+}
+
+#endif /* cglm_affine_mat_h */