From 06261cfdfeec0d8186b62d7e1be849fb5276227d Mon Sep 17 00:00:00 2001
From: Sven Göthel <sgothel@jausoft.com>
Date: Mon, 29 Apr 2024 01:13:05 +0200
Subject: math: vec[234][fi]: Add begin, cbegin methods and explicit
 const_pointer and pointer conversion ops, allowing to access aligned memory
 like Matrix4

---
 include/jau/math/vec2f.hpp | 6 ++++++
 include/jau/math/vec2i.hpp | 6 ++++++
 include/jau/math/vec3f.hpp | 6 ++++++
 include/jau/math/vec4f.hpp | 6 ++++++
 4 files changed, 24 insertions(+)

diff --git a/include/jau/math/vec2f.hpp b/include/jau/math/vec2f.hpp
index 598d01e..9a830f7 100644
--- a/include/jau/math/vec2f.hpp
+++ b/include/jau/math/vec2f.hpp
@@ -86,12 +86,18 @@ namespace jau::math {
             return (&x)[i];
         }
 
+        explicit operator const_pointer() const noexcept { return &x; }
+        constexpr const_iterator cbegin() const noexcept { return &x; }
+
         /** Returns writeable reference to component */
         constexpr reference operator[](size_t i) noexcept {
             assert(i < 2);
             return (&x)[i];
         }
 
+        explicit operator pointer() noexcept { return &x; }
+        constexpr iterator begin() noexcept { return &x; }
+
         /** xy = this, returns xy. */
         constexpr iterator get(iterator xy) const noexcept {
             xy[0] = x;
diff --git a/include/jau/math/vec2i.hpp b/include/jau/math/vec2i.hpp
index 17e84de..ec6e237 100644
--- a/include/jau/math/vec2i.hpp
+++ b/include/jau/math/vec2i.hpp
@@ -83,12 +83,18 @@ namespace jau::math {
             return (&x)[i];
         }
 
+        explicit operator const_pointer() const noexcept { return &x; }
+        constexpr const_iterator cbegin() const noexcept { return &x; }
+
         /** Returns writeable reference to component */
         constexpr reference operator[](size_t i) noexcept {
             assert(i < 2);
             return (&x)[i];
         }
 
+        explicit operator pointer() noexcept { return &x; }
+        constexpr iterator begin() noexcept { return &x; }
+
         /** xy = this, returns xy. */
         constexpr iterator get(iterator xy) const noexcept {
             xy[0] = x;
diff --git a/include/jau/math/vec3f.hpp b/include/jau/math/vec3f.hpp
index b63a405..c68b45c 100644
--- a/include/jau/math/vec3f.hpp
+++ b/include/jau/math/vec3f.hpp
@@ -96,12 +96,18 @@ namespace jau::math {
                 return (&x)[i];
             }
 
+            explicit operator const_pointer() const noexcept { return &x; }
+            constexpr const_iterator cbegin() const noexcept { return &x; }
+
             /** Returns writeable reference to component  */
             constexpr reference operator[](size_t i) noexcept {
                 assert(i < 3);
                 return (&x)[i];
             }
 
+            explicit operator pointer() noexcept { return &x; }
+            constexpr iterator begin() noexcept { return &x; }
+
             /** xyz = this, returns xyz. */
             constexpr iterator get(iterator xyz) const noexcept {
                 xyz[0] = x;
diff --git a/include/jau/math/vec4f.hpp b/include/jau/math/vec4f.hpp
index 2580c17..b27c767 100644
--- a/include/jau/math/vec4f.hpp
+++ b/include/jau/math/vec4f.hpp
@@ -97,12 +97,18 @@ namespace jau::math {
                 return (&x)[i];
             }
 
+            explicit operator const_pointer() const noexcept { return &x; }
+            constexpr const_iterator cbegin() const noexcept { return &x; }
+
             /** Returns writeable reference to component */
             constexpr reference operator[](size_t i) noexcept {
                 assert(i < 4);
                 return (&x)[i];
             }
 
+            explicit operator pointer() noexcept { return &x; }
+            constexpr iterator begin() noexcept { return &x; }
+
             /** xyzw = this, returns xyzw. */
             constexpr iterator get(iterator xyzw) const noexcept {
                 xyzw[0] = x;
-- 
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