From 3eedcceb09c19498b7e98828dbb6298625636812 Mon Sep 17 00:00:00 2001
From: Luc <luc@gluc.ch>
Date: Tue, 24 Apr 2018 13:36:09 +0200
Subject: [PATCH] add overloaded vec_new (with macro tricks)

---
 sweet_math_short.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++
 sweet_math_short.h | 18 +++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 sweet_math_short.c

diff --git a/sweet_math_short.c b/sweet_math_short.c
new file mode 100644
index 0000000..f91e68c
--- /dev/null
+++ b/sweet_math_short.c
@@ -0,0 +1,81 @@
+#include "sweet_math.h"
+
+vec2 vec2_new_2f(float x, float y)
+{
+    vec2 v;
+    v.x = x;
+    v.y = y;
+    return v;
+}
+
+vec2 vec2_new_v3(vec3 w)
+{
+    vec2 v;
+    v.x = w.x;
+    v.y = w.y;
+    return v;
+}
+
+vec3 vec3_new_3f(float x, float y, float z)
+{
+    vec3 v;
+    v.x = x;
+    v.y = y;
+    v.z = z;
+    return v;
+}
+
+vec3 vec3_new_v2_1f(vec2 w, float z)
+{
+    vec3 v;
+    v.x = w.x;
+    v.y = w.y;
+    v.z = z;
+    return v;
+}
+
+vec3 vec3_new_v4(vec4 w)
+{
+    vec3 v;
+    v.x = w.x;
+    v.y = w.y;
+    v.z = w.z;
+    return v;
+}
+
+vec4 vec4_new_4f(float x, float y, float z, float w)
+{
+    vec4 v;
+    v.x = x;
+    v.y = y;
+    v.z = z;
+    v.w = w;
+    return v;
+}
+
+vec4 vec4_new_v2_2f(vec2 u, float z, float w)
+{
+    vec4 v;
+    v.x = u.x;
+    v.y = u.y;
+    v.z = z;
+    v.w = w;
+    return v;
+}
+
+vec4 vec4_new_v3_1f(vec3 u, float w)
+{
+    vec4 v;
+    v.x = u.x;
+    v.y = u.y;
+    v.z = u.z;
+    v.w = w;
+    return v;
+}
+
+vec4 vec4_new_v4 (vec4 v)
+{
+    return v;
+}
+
+
diff --git a/sweet_math_short.h b/sweet_math_short.h
index 89af7b6..9323aed 100644
--- a/sweet_math_short.h
+++ b/sweet_math_short.h
@@ -21,6 +21,24 @@
 
 #include "sweet_math.h"
 
+#define VEC2_BUILDER(_1, _2, NAME, ...) NAME
+#define VEC3_BUILDER(_1, _2, _3, NAME, ...) NAME
+#define VEC4_BUILDER(_1, _2, _3, _4, NAME, ...) NAME
+
+#define vec2_new(...) VEC2_BUILDER(__VA_ARGS__, vec2_new_2f, vec2_new_v3)(__VA_ARGS__)
+#define vec3_new(...) VEC3_BUILDER(__VA_ARGS__, vec3_new_3f, vec3_new_v2_1f, vec3_new_v4)(__VA_ARGS__)
+#define vec4_new(...) VEC4_BUILDER(__VA_ARGS__, vec4_new_4f, vec4_new_v2_2f, vec4_new_v3_1f, vec4_new_v4)(__VA_ARGS__)
+
+vec2 vec2_new_2f(float x, float y);
+vec2 vec2_new_v3(vec3 w);
+vec3 vec3_new_3f(float x, float y, float z);
+vec3 vec3_new_v2_1f(vec2 w, float z);
+vec3 vec3_new_v4(vec4 w);
+vec4 vec4_new_4f(float x, float y, float z, float w);
+vec4 vec4_new_v2_2f(vec2 u, float z, float w);
+vec4 vec4_new_v3_1f(vec3 u, float w);
+vec4 vec4_new_v4 (vec4 v);
+
 #define radian_2_degree(radian) radian * 57.2957795130823208767981548
 #define degree_2_radian(degree) degree * 0.01745329251994329576923690768488