Added long double versions of various maths classes/functions.

Author: robertosfield

include/vsg/maths/box.h

@@ -90,9 +90,11 @@ namespace vsg
 
     using box = t_box<float>;   /// float box class
     using dbox = t_box<double>; /// double box class
+    using ldbox = t_box<long double>; /// double box class
 
     VSG_type_name(vsg::box);
     VSG_type_name(vsg::dbox);
+    VSG_type_name(vsg::ldbox);
 
     template<typename T>
     constexpr bool operator==(const t_box<T>& lhs, const t_box<T>& rhs)

include/vsg/maths/mat4.h

@@ -121,9 +121,11 @@ namespace vsg
 
     using mat4 = t_mat4<float>;   /// float 4x4 matrix
     using dmat4 = t_mat4<double>; /// double 4x4 matrix
+    using ldmat4 = t_mat4<long double>; /// long double 4x4 matrix
 
     VSG_type_name(vsg::mat4);
     VSG_type_name(vsg::dmat4);
+    VSG_type_name(vsg::ldmat4);
 
     template<typename T>
     bool operator==(const t_mat4<T>& lhs, const t_mat4<T>& rhs)

include/vsg/maths/plane.h

@@ -110,6 +110,7 @@ namespace vsg
 
     using plane = t_plane<float>;
     using dplane = t_plane<double>;
+    using ldplane = t_plane<long double>;
 
     VSG_type_name(vsg::plane);
     VSG_type_name(vsg::dplane);

include/vsg/maths/quat.h

@@ -147,9 +147,11 @@ namespace vsg
 
     using quat = t_quat<float>;   /// float quaternion
     using dquat = t_quat<double>; /// double quaternion
+    using ldquat = t_quat<long double>; /// long double quaternion
 
     VSG_type_name(vsg::quat);
     VSG_type_name(vsg::dquat);
+    VSG_type_name(vsg::ldquat);
 
     template<typename T>
     constexpr bool operator==(const t_quat<T>& lhs, const t_quat<T>& rhs)

include/vsg/maths/sphere.h

@@ -122,9 +122,11 @@ namespace vsg
 
     using sphere = t_sphere<float>;   /// float sphere class
     using dsphere = t_sphere<double>; /// double sphere class
+    using ldsphere = t_sphere<long double>; /// long double sphere class
 
     VSG_type_name(vsg::sphere);
     VSG_type_name(vsg::dsphere);
+    VSG_type_name(vsg::ldsphere);
 
     template<typename T>
     constexpr bool operator==(const t_sphere<T>& lhs, const t_sphere<T>& rhs)

include/vsg/maths/transform.h

@@ -248,6 +248,11 @@ namespace vsg
     /// assumes matrix has no skew or perspective components
     extern VSG_DECLSPEC bool decompose(const dmat4& m, dvec3& translation, dquat& rotation, dvec3& scale);
 
+    /// decompose long double matrix into translation, rotation and scale components.
+    /// maps to TRS form: vsg::translate(translation) * vsg::rotate(rotation) * vsg::scale(scale);
+    /// assumes matrix has no skew or perspective components
+    extern VSG_DECLSPEC bool decompose(const ldmat4& m, ldvec3& translation, ldquat& rotation, ldvec3& scale);
+
     /// compute the bounding sphere that encloses a frustum defined by specified float ModelViewMatrixProjection
     extern VSG_DECLSPEC sphere computeFrustumBound(const mat4& m);
 

include/vsg/maths/vec2.h

@@ -138,6 +138,7 @@ namespace vsg
 
     using vec2 = t_vec2<float>;      // float 2D vector
     using dvec2 = t_vec2<double>;    // double 2D vector
+    using ldvec2 = t_vec2<long double>;    // long double 2D vector
     using bvec2 = t_vec2<int8_t>;    // signed 8 bit integer 2D vector
     using svec2 = t_vec2<int16_t>;   //  signed 16 bit integer 2D vector
     using ivec2 = t_vec2<int32_t>;   //  signed 32 bit integer 2D vector

include/vsg/maths/vec3.h

@@ -146,6 +146,7 @@ namespace vsg
 
     using vec3 = t_vec3<float>;      // float 3D vector
     using dvec3 = t_vec3<double>;    // double 3D vector
+    using ldvec3 = t_vec3<long double>;    // long double 3D vector
     using bvec3 = t_vec3<int8_t>;    // signed 8 bit integer 3D vector
     using svec3 = t_vec3<int16_t>;   //  signed 16 bit integer 3D vector
     using ivec3 = t_vec3<int32_t>;   //  signed 32 bit integer 3D vector
@@ -155,6 +156,7 @@ namespace vsg
 
     VSG_type_name(vsg::vec3);
     VSG_type_name(vsg::dvec3);
+    VSG_type_name(vsg::ldvec3);
     VSG_type_name(vsg::bvec3);
     VSG_type_name(vsg::svec3);
     VSG_type_name(vsg::ivec3);

include/vsg/maths/vec4.h

@@ -176,6 +176,7 @@ namespace vsg
 
     using vec4 = t_vec4<float>;      // float 4D vector
     using dvec4 = t_vec4<double>;    // double 4D vector
+    using ldvec4 = t_vec4<long double>;    // long double 4D vector
     using bvec4 = t_vec4<int8_t>;    // signed 8 bit integer 4D vector
     using svec4 = t_vec4<int16_t>;   //  signed 16 bit integer 4D vector
     using ivec4 = t_vec4<int32_t>;   //  signed 32 bit integer 4D vector
@@ -185,6 +186,7 @@ namespace vsg
 
     VSG_type_name(vsg::vec4);
     VSG_type_name(vsg::dvec4);
+    VSG_type_name(vsg::ldvec4);
     VSG_type_name(vsg::bvec4);
     VSG_type_name(vsg::svec4);
     VSG_type_name(vsg::ivec4);

src/vsg/maths/maths_transform.cpp

@@ -297,6 +297,11 @@ bool vsg::decompose(const dmat4& m, dvec3& translation, dquat& rotation, dvec3&
     return t_decompose<double>(m, translation, rotation, scale);
 }
 
+bool vsg::decompose(const ldmat4& m, ldvec3& translation, ldquat& rotation, ldvec3& scale)
+{
+    return t_decompose<long double>(m, translation, rotation, scale);
+}
+
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 //
 // computeFrustumBound